Investigate REQ PATH usage

.github/workflows/build-artifacts.yml

@@ -280,7 +280,7 @@ jobs:
         run: flutter pub get
 
       - name: Build web release
-        run: flutter build web --release --base-href /meshcore_sar_app/
+        run: flutter build web --release --base-href /meshcore-sar/
 
       - name: Upload pages artifact
         uses: actions/upload-pages-artifact@v3

.gitignore

@@ -80,6 +80,7 @@ create_feature_graphic.py
 # Tool caches and local state
 .cachebro/
 .osgrep/
+third_party/lpcnet_flutter/
 
 # Claude Code local settings (permissions, personal config)
 .claude/settings.local.json

README.md

@@ -16,7 +16,7 @@
 
 MeshCore SAR helps teams coordinate in low-connectivity or no-connectivity environments with messaging, voice, images, maps, and live location context in one app.
 It uses the MeshCore protocol over LoRa for long-range, infrastructure-free communication.
-`iOS TestFlight:` https://testflight.apple.com/join/HhzerdHp
+`iOS TestFlight:` https://testflight.apple.com/join/nCZYMPPz
 
 ## Highlights
 

ios/Runner.xcodeproj/project.pbxproj

@@ -489,7 +489,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				CURRENT_PROJECT_VERSION = 105;
+				CURRENT_PROJECT_VERSION = 112;
 				DEVELOPMENT_TEAM = JND55328G8;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
@@ -511,7 +511,7 @@
 			buildSettings = {
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 105;
+				CURRENT_PROJECT_VERSION = 112;
 				DEVELOPMENT_TEAM = JND55328G8;
 				GENERATE_INFOPLIST_FILE = YES;
 				MARKETING_VERSION = 1.0;
@@ -530,7 +530,7 @@
 			buildSettings = {
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 105;
+				CURRENT_PROJECT_VERSION = 112;
 				DEVELOPMENT_TEAM = JND55328G8;
 				GENERATE_INFOPLIST_FILE = YES;
 				MARKETING_VERSION = 1.0;
@@ -547,7 +547,7 @@
 			buildSettings = {
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 105;
+				CURRENT_PROJECT_VERSION = 112;
 				DEVELOPMENT_TEAM = JND55328G8;
 				GENERATE_INFOPLIST_FILE = YES;
 				MARKETING_VERSION = 1.0;
@@ -679,7 +679,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				CURRENT_PROJECT_VERSION = 105;
+				CURRENT_PROJECT_VERSION = 112;
 				DEVELOPMENT_TEAM = JND55328G8;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
@@ -702,7 +702,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				CURRENT_PROJECT_VERSION = 105;
+				CURRENT_PROJECT_VERSION = 112;
 				DEVELOPMENT_TEAM = JND55328G8;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;

ios/Runner/AppDelegate.swift

@@ -1,5 +1,6 @@
 import UIKit
 import Flutter
+import UserNotifications
 
 @main
 @objc class AppDelegate: FlutterAppDelegate {
@@ -8,6 +9,7 @@ import Flutter
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
     GeneratedPluginRegistrant.register(with: self)
+    UNUserNotificationCenter.current().delegate = self as UNUserNotificationCenterDelegate
     return super.application(application, didFinishLaunchingWithOptions: launchOptions)
   }
 }

ios/Runner/Info.plist

@@ -43,7 +43,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>105</string>
+	<string>112</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>ITSAppUsesNonExemptEncryption</key>
@@ -102,6 +102,7 @@
 	<key>UIBackgroundModes</key>
 	<array>
 		<string>location</string>
+		<string>bluetooth-central</string>
 		<string>bluetooth-peripheral</string>
 	</array>
 	<key>UILaunchStoryboardName</key>

ios/fastlane/report.xml

@@ -5,24 +5,22 @@
     
     
       
-      <testcase classname="fastlane.lanes" name="0: default_platform" time="0.000243">
+      <testcase classname="fastlane.lanes" name="0: default_platform" time="0.00029">
         
       </testcase>
     
       
-      <testcase classname="fastlane.lanes" name="1: increment_build_number" time="0.511584">
+      <testcase classname="fastlane.lanes" name="1: increment_build_number" time="0.339599">
         
       </testcase>
     
       
-      <testcase classname="fastlane.lanes" name="2: build_app" time="95.467725">
+      <testcase classname="fastlane.lanes" name="2: build_app" time="116.294416">
         
       </testcase>
     
       
-      <testcase classname="fastlane.lanes" name="3: upload_to_app_store" time="240.60994">
-        
-          <failure message="/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/actions/actions_helper.rb:67:in &apos;Fastlane::Actions.execute_action&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/runner.rb:255:in &apos;block in Fastlane::Runner#execute_action&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/runner.rb:229:in &apos;Dir.chdir&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/runner.rb:229:in &apos;Fastlane::Runner#execute_action&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/runner.rb:157:in &apos;Fastlane::Runner#trigger_action_by_name&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/fast_file.rb:159:in &apos;Fastlane::FastFile#method_missing&apos;&#10;Fastfile:23:in &apos;block (2 levels) in Fastlane::FastFile#parsing_binding&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/lane.rb:41:in &apos;Fastlane::Lane#call&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/runner.rb:49:in &apos;block in Fastlane::Runner#execute&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/runner.rb:45:in &apos;Dir.chdir&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/runner.rb:45:in &apos;Fastlane::Runner#execute&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/lane_manager.rb:46:in &apos;Fastlane::LaneManager.cruise_lane&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/command_line_handler.rb:34:in &apos;Fastlane::CommandLineHandler.handle&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/commands_generator.rb:110:in &apos;block (2 levels) in Fastlane::CommandsGenerator#run&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/commander-4.6.0/lib/commander/command.rb:187:in &apos;Commander::Command#call&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/commander-4.6.0/lib/commander/command.rb:157:in &apos;Commander::Command#run&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/commander-4.6.0/lib/commander/runner.rb:444:in &apos;Commander::Runner#run_active_command&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane_core/lib/fastlane_core/ui/fastlane_runner.rb:124:in &apos;Commander::Runner#run!&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/commander-4.6.0/lib/commander/delegates.rb:18:in &apos;Commander::Delegates#run!&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/commands_generator.rb:363:in &apos;Fastlane::CommandsGenerator#run&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/commands_generator.rb:43:in &apos;Fastlane::CommandsGenerator.start&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/fastlane/lib/fastlane/cli_tools_distributor.rb:132:in &apos;Fastlane::CLIToolsDistributor.take_off&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/gems/fastlane-2.231.1/bin/fastlane:23:in &apos;&lt;top (required)&gt;&apos;&#10;/opt/homebrew/Cellar/ruby/4.0.1/lib/ruby/4.0.0/rubygems.rb:303:in &apos;Kernel#load&apos;&#10;/opt/homebrew/Cellar/ruby/4.0.1/lib/ruby/4.0.0/rubygems.rb:303:in &apos;Gem.activate_and_load_bin_path&apos;&#10;/opt/homebrew/Cellar/fastlane/2.231.1/libexec/bin/fastlane:25:in &apos;&lt;main&gt;&apos;&#10;&#10;Error uploading ipa file: &#10; [Application Loader Error Output]: [ContentDelivery.Uploader.104B12FA0] 
+      <testcase classname="fastlane.lanes" name="3: upload_to_app_store" time="441.763052">
         
       </testcase>
     

lib/l10n/app_localizations_zh.dart

@@ -29,9 +29,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get disconnect => '断开连接';
 
-  @override
-  String get scanningForDevices => '正在扫描设备...';
-
   @override
   String get noDevicesFound => '未找到设备';
 
@@ -59,27 +56,14 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get failedToGetGpsLocation => '获取 GPS 位置失败';
 
-  @override
-  String advertisedAtLocation(String latitude, String longitude) {
-    return '已广播位置 $latitude, $longitude';
-  }
-
   @override
   String failedToAdvertise(String error) {
     return '广播失败: $error';
   }
 
-  @override
-  String reconnecting(int attempt, int max) {
-    return '正在重新连接... ($attempt/$max)';
-  }
-
   @override
   String get cancelReconnection => '取消重新连接';
 
-  @override
-  String get mapManagement => '地图管理';
-
   @override
   String get general => '通用';
 
@@ -125,12 +109,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get displayPacketActivity => '在顶部栏显示数据包活动指示器';
 
-  @override
-  String get simpleMode => '简洁模式';
-
-  @override
-  String get simpleModeDescription => '在消息和联系人中隐藏非必要信息';
-
   @override
   String get disableMap => '禁用地图';
 
@@ -143,72 +121,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get chooseLanguage => '选择语言';
 
-  @override
-  String get english => '英语';
-
-  @override
-  String get slovenian => '斯洛文尼亚语';
-
-  @override
-  String get croatian => '克罗地亚语';
-
-  @override
-  String get german => '德语';
-
-  @override
-  String get spanish => '西班牙语';
-
-  @override
-  String get french => '法语';
-
-  @override
-  String get italian => '意大利语';
-
-  @override
-  String get locationBroadcasting => '位置广播';
-
-  @override
-  String get autoLocationTracking => '自动位置跟踪';
-
-  @override
-  String get automaticallyBroadcastPosition => '自动广播位置更新';
-
-  @override
-  String get configureTracking => '配置跟踪';
-
-  @override
-  String get distanceAndTimeThresholds => '距离和时间阈值';
-
-  @override
-  String get locationTrackingConfiguration => '位置跟踪配置';
-
-  @override
-  String get configureWhenLocationBroadcasts => '配置何时向 Mesh 网络发送位置广播';
-
-  @override
-  String get minimumDistance => '最小距离';
-
-  @override
-  String broadcastAfterMoving(String distance) {
-    return '仅在移动 $distance 米后广播';
-  }
-
-  @override
-  String get maximumDistance => '最大距离';
-
-  @override
-  String alwaysBroadcastAfterMoving(String distance) {
-    return '移动 $distance 米后始终广播';
-  }
-
-  @override
-  String get minimumTimeInterval => '最小时间间隔';
-
-  @override
-  String alwaysBroadcastEvery(String duration) {
-    return '每隔 $duration 始终广播';
-  }
-
   @override
   String get save => '保存';
 
@@ -244,12 +156,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get moreInfo => '更多信息';
 
-  @override
-  String get learnMoreAbout => '了解更多关于 MeshCore 搜救助手的信息';
-
-  @override
-  String get developer => '开发者';
-
   @override
   String get packageName => '包名';
 
@@ -321,9 +227,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get refresh => '刷新';
 
-  @override
-  String get sendDirectMessage => '发送';
-
   @override
   String get resetPath => '重置路径 (重新路由)';
 
@@ -441,21 +344,6 @@ class AppLocalizationsZh extends AppLocalizations {
     return '共享 $count 个绘图';
   }
 
-  @override
-  String sentDrawingsToRoom(int count, String plural, String roomName) {
-    return '已发送 $count 个地图绘制到 $roomName';
-  }
-
-  @override
-  String sharedDrawingsToRoom(
-    int success,
-    int total,
-    String plural,
-    String roomName,
-  ) {
-    return '已将 $success/$total 个绘图共享到 $roomName';
-  }
-
   @override
   String get showReceivedDrawings => '显示接收到的绘图';
 
@@ -477,9 +365,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get clearAll => '全部清除';
 
-  @override
-  String get noLocalDrawings => '没有可共享的本地绘图';
-
   @override
   String get publicChannel => '公共频道';
 
@@ -489,37 +374,9 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get storedPermanently => '永久存储在房间中';
 
-  @override
-  String drawingsSentToPublicChannel(int count, String plural) {
-    return '已将 $count 个地图绘制发送到公共频道';
-  }
-
-  @override
-  String drawingsSharedToPublicChannel(int success, int total) {
-    return '已将 $success/$total 个绘图共享到公共频道';
-  }
-
   @override
   String get notConnectedToDevice => '未连接到设备';
 
-  @override
-  String get directMessage => '直连消息';
-
-  @override
-  String directMessageSentTo(String contactName) {
-    return '直连消息已发送给 $contactName';
-  }
-
-  @override
-  String failedToSend(String error) {
-    return '发送失败：$error';
-  }
-
-  @override
-  String directMessageInfo(String contactName) {
-    return '此消息将直连发送给 $contactName。它也将出现在主消息流中。';
-  }
-
   @override
   String get typeYourMessage => '输入您的消息...';
 
@@ -547,9 +404,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get location => '位置';
 
-  @override
-  String get myLocation => '我的位置';
-
   @override
   String get fromMap => '来自地图';
 
@@ -610,9 +464,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get flood => '泛洪';
 
-  @override
-  String get admin => '管理员';
-
   @override
   String get loggedIn => '已登录';
 
@@ -622,29 +473,11 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get distance => '距离';
 
-  @override
-  String pingingDirect(String name) {
-    return '正在 Ping $name（通过路径直连发送）...';
-  }
-
-  @override
-  String pingingFlood(String name) {
-    return '正在 Ping $name（泛洪 - 无路径）...';
-  }
-
   @override
   String directPingTimeout(String name) {
     return '直连 Ping 超时 - 正在使用泛洪重试 $name...';
   }
 
-  @override
-  String pingSuccessful(String name, String fallback) {
-    return '成功 Ping 到 $name$fallback';
-  }
-
-  @override
-  String get viaFloodingFallback => '（通过泛洪回退）';
-
   @override
   String pingFailed(String name) {
     return 'Ping $name 失败 - 未收到响应';
@@ -655,16 +488,6 @@ class AppLocalizationsZh extends AppLocalizations {
     return '您确定要删除“$name”吗？\n\n这将从应用程序和配套的无线电设备中移除该联系人。';
   }
 
-  @override
-  String removingContact(String name) {
-    return '正在移除 $name...';
-  }
-
-  @override
-  String contactRemoved(String name) {
-    return '联系人“$name”已移除';
-  }
-
   @override
   String failedToRemoveContact(String error) {
     return '移除联系人失败：$error';
@@ -709,11 +532,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get telemetry => '遥测';
 
-  @override
-  String requestingTelemetry(String name) {
-    return '正在向 $name 请求遥测数据...';
-  }
-
   @override
   String get voltage => '电压';
 
@@ -785,9 +603,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get showAll => '显示全部';
 
-  @override
-  String get nearbyContacts => '附近联系人';
-
   @override
   String get locationUnavailable => '位置不可用';
 
@@ -827,169 +642,9 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get channels => '频道';
 
-  @override
-  String get cacheStatistics => '缓存统计';
-
-  @override
-  String get totalTiles => '总瓦片数';
-
-  @override
-  String get cacheSize => '缓存大小';
-
-  @override
-  String get storeName => '存储名称';
-
-  @override
-  String get noCacheStatistics => '没有可用的缓存统计信息';
-
-  @override
-  String get downloadRegion => '下载区域';
-
-  @override
-  String get mapLayer => '地图图层';
-
-  @override
-  String get regionBounds => '区域边界';
-
-  @override
-  String get north => '北';
-
-  @override
-  String get south => '南';
-
-  @override
-  String get east => '东';
-
-  @override
-  String get west => '西';
-
-  @override
-  String get zoomLevels => '缩放级别';
-
-  @override
-  String minZoom(int zoom) {
-    return '最小：$zoom';
-  }
-
-  @override
-  String maxZoom(int zoom) {
-    return '最大：$zoom';
-  }
-
-  @override
-  String get downloadingDots => '正在下载...';
-
-  @override
-  String get cancelDownload => '取消下载';
-
-  @override
-  String get downloadRegionButton => '下载区域';
-
-  @override
-  String get downloadNote => '注意：大的区域或高缩放级别可能需要大量时间和存储空间。';
-
-  @override
-  String get cacheManagement => '缓存管理';
-
-  @override
-  String get clearAllMaps => '清除所有地图';
-
-  @override
-  String get clearMapsConfirmTitle => '清除所有地图';
-
-  @override
-  String get clearMapsConfirmMessage => '您确定要删除所有下载的地图吗？此操作无法撤销。';
-
-  @override
-  String get mapDownloadCompleted => '地图下载完成！';
-
-  @override
-  String get cacheClearedSuccessfully => '缓存清除成功！';
-
-  @override
-  String get downloadCancelled => '下载已取消';
-
-  @override
-  String get startingDownload => '正在开始下载...';
-
-  @override
-  String get downloadingMapTiles => '正在下载地图瓦片...';
-
-  @override
-  String get downloadCompletedSuccessfully => '下载成功完成！';
-
-  @override
-  String get cancellingDownload => '正在取消下载...';
-
-  @override
-  String errorLoadingStats(String error) {
-    return '加载统计信息时出错：$error';
-  }
-
-  @override
-  String downloadFailed(String error) {
-    return '下载失败：$error';
-  }
-
-  @override
-  String cancelFailed(String error) {
-    return '取消失败：$error';
-  }
-
-  @override
-  String clearCacheFailed(String error) {
-    return '清除缓存失败：$error';
-  }
-
-  @override
-  String minZoomError(String error) {
-    return '最小缩放：$error';
-  }
-
-  @override
-  String maxZoomError(String error) {
-    return '最大缩放：$error';
-  }
-
-  @override
-  String get minZoomGreaterThanMax => '最小缩放必须小于或等于最大缩放';
-
   @override
   String get selectMapLayer => '选择地图图层';
 
-  @override
-  String get mapOptions => '地图选项';
-
-  @override
-  String get showLegend => '显示图例';
-
-  @override
-  String get displayMarkerTypeCounts => '显示标记类型计数';
-
-  @override
-  String get rotateMapWithHeading => '随航向旋转地图';
-
-  @override
-  String get mapFollowsDirection => '地图在移动时跟随您的方向';
-
-  @override
-  String get resetMapRotation => '重置旋转';
-
-  @override
-  String get resetMapRotationTooltip => '重置地图方向为北';
-
-  @override
-  String get showMapDebugInfo => '显示地图调试信息';
-
-  @override
-  String get displayZoomLevelBounds => '显示缩放级别和边界';
-
-  @override
-  String get fullscreenMode => '全屏模式';
-
-  @override
-  String get hideUiFullMapView => '隐藏所有 UI 控件以获得全地图视图';
-
   @override
   String get openStreetMap => 'OpenStreetMap';
 
@@ -1008,12 +663,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get googleTerrain => 'Google 地形图';
 
-  @override
-  String get downloadVisibleArea => '下载可见区域';
-
-  @override
-  String get initializingMap => '正在初始化地图...';
-
   @override
   String get dragToPosition => '拖动以定位';
 
@@ -1029,49 +678,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get sarAlert => '搜救警报';
 
-  @override
-  String get messageSentToPublicChannel => '消息已发送到公共频道';
-
-  @override
-  String get pleaseSelectRoomToSendSar => '请选择一个房间发送搜救标记';
-
-  @override
-  String failedToSendSarMarker(String error) {
-    return '发送搜救标记失败：$error';
-  }
-
-  @override
-  String sarMarkerSentTo(String roomName) {
-    return '搜救标记已发送到 $roomName';
-  }
-
-  @override
-  String get notConnectedCannotSync => '未连接 - 无法同步消息';
-
-  @override
-  String syncedMessageCount(int count) {
-    return '已同步 $count 条消息';
-  }
-
-  @override
-  String get noNewMessages => '没有新消息';
-
-  @override
-  String syncFailed(String error) {
-    return '同步失败：$error';
-  }
-
-  @override
-  String get failedToResendMessage => '重新发送消息失败';
-
-  @override
-  String get retryingMessage => '正在重试消息...';
-
-  @override
-  String retryFailed(String error) {
-    return '重试失败：$error';
-  }
-
   @override
   String get textCopiedToClipboard => '文本已复制到剪贴板';
 
@@ -1081,9 +687,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get cannotReplyContactNotFound => '无法回复：未找到联系人';
 
-  @override
-  String get messageDeleted => '消息已删除';
-
   @override
   String get copyText => '复制文本';
 
@@ -1118,12 +721,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get sarLocationShare => '搜救位置';
 
-  @override
-  String get locationShared => '位置已共享';
-
-  @override
-  String get refreshedContacts => '联系人已刷新';
-
   @override
   String get justNow => '刚刚';
 
@@ -1231,77 +828,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get you => '您';
 
-  @override
-  String get offlineVectorMaps => '离线矢量地图';
-
-  @override
-  String get offlineVectorMapsDescription =>
-      '导入和管理离线矢量地图瓦片（MBTiles 格式），以便在没有互联网连接时使用';
-
-  @override
-  String get importMbtiles => '导入 MBTiles 文件';
-
-  @override
-  String get importMbtilesNote =>
-      '支持带有矢量瓦片（PBF/MVT 格式）的 MBTiles 文件。Geofabrik 的数据提取非常好用！';
-
-  @override
-  String get noMbtilesFiles => '未找到离线矢量地图';
-
-  @override
-  String get mbtilesImportedSuccessfully => 'MBTiles 文件导入成功';
-
-  @override
-  String get failedToImportMbtiles => '导入 MBTiles 文件失败';
-
-  @override
-  String get deleteMbtilesConfirmTitle => '删除离线地图';
-
-  @override
-  String deleteMbtilesConfirmMessage(String name) {
-    return '您确定要删除“$name”吗？这将永久移除该离线地图。';
-  }
-
-  @override
-  String get mbtilesDeletedSuccessfully => '离线地图删除成功';
-
-  @override
-  String get failedToDeleteMbtiles => '删除离线地图失败';
-
-  @override
-  String get importExportCachedTiles => '导入/导出缓存的瓦片';
-
-  @override
-  String get importExportDescription => '在设备之间备份、共享和恢复下载的地图瓦片';
-
-  @override
-  String get exportTilesToFile => '导出瓦片到文件';
-
-  @override
-  String get importTilesFromFile => '从文件导入瓦片';
-
-  @override
-  String get selectExportLocation => '选择导出位置';
-
-  @override
-  String get selectImportFile => '选择瓦片存档';
-
-  @override
-  String get exportingTiles => '正在导出瓦片...';
-
-  @override
-  String get importingTiles => '正在导入瓦片...';
-
-  @override
-  String exportSuccess(int count) {
-    return '成功导出 $count 个瓦片';
-  }
-
-  @override
-  String importSuccess(int count) {
-    return '成功导入 $count 个存储';
-  }
-
   @override
   String exportFailed(String error) {
     return '导出失败：$error';
@@ -1312,38 +838,12 @@ class AppLocalizationsZh extends AppLocalizations {
     return '导入失败：$error';
   }
 
-  @override
-  String get exportNote => '创建一个压缩存档（.fmtc）文件，可以共享并在其他设备上导入。';
-
-  @override
-  String get importNote => '从先前导出的存档文件导入地图瓦片。瓦片将与现有缓存合并。';
-
-  @override
-  String get noTilesToExport => '没有可导出的瓦片';
-
-  @override
-  String archiveContainsStores(int count) {
-    return '存档包含 $count 个存储';
-  }
-
-  @override
-  String get vectorTiles => '矢量瓦片';
-
-  @override
-  String get schema => '模式';
-
   @override
   String get unknown => '未知';
 
-  @override
-  String get bounds => '边界';
-
   @override
   String get onlineLayers => '在线图层';
 
-  @override
-  String get offlineLayers => '离线图层';
-
   @override
   String get locationTrail => '位置轨迹';
 
@@ -1380,47 +880,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get trailControls => '轨迹控制';
 
-  @override
-  String get exportTrailToGpx => '导出轨迹到 GPX';
-
-  @override
-  String get importTrailFromGpx => '从 GPX 导入轨迹';
-
-  @override
-  String get trailExportedSuccessfully => '轨迹导出成功！';
-
-  @override
-  String get failedToExportTrail => '导出轨迹失败';
-
-  @override
-  String failedToImportTrail(String error) {
-    return '导入轨迹失败：$error';
-  }
-
-  @override
-  String get importTrail => '导入轨迹';
-
-  @override
-  String importTrailQuestion(int pointCount) {
-    return '导入包含 $pointCount 个点的轨迹吗？\n\n您可以替换当前轨迹，或将其与现有轨迹并排查看。';
-  }
-
-  @override
-  String get viewAlongside => '并排查看';
-
-  @override
-  String get replaceCurrent => '替换当前';
-
-  @override
-  String trailImported(int pointCount) {
-    return '轨迹已导入！（$pointCount 个点）';
-  }
-
-  @override
-  String trailReplaced(int pointCount) {
-    return '轨迹已替换！（$pointCount 个点）';
-  }
-
   @override
   String get contactTrails => '联系人轨迹';
 
@@ -1672,18 +1131,12 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get noRoomsFound => '未找到房间';
 
-  @override
-  String get noContactsOrRoomsAvailable => '没有可用的联系人或房间';
-
   @override
   String get noRecipientsAvailable => '没有可用的收件人';
 
   @override
   String get noChannelsFound => '未找到频道';
 
-  @override
-  String get messagesWillBeSentToPublicChannel => '消息将发送到公共频道';
-
   @override
   String get newMessage => '新消息';
 
@@ -1855,9 +1308,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get rectangleDrawing => '矩形绘图';
 
-  @override
-  String get coordinatesCopiedToClipboard => '坐标已复制到剪贴板';
-
   @override
   String get manualCoordinates => '手动输入坐标';
 
@@ -1870,31 +1320,9 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get longitudeLabel => '经度';
 
-  @override
-  String get invalidLatitude => '无效的纬度（-90 到 90）';
-
-  @override
-  String get invalidLongitude => '无效的经度（-180 到 180）';
-
   @override
   String get exampleCoordinates => '例如：46.0569, 14.5058';
 
-  @override
-  String get drawingShared => '地图绘制';
-
-  @override
-  String get drawingHidden => '绘图已从地图上隐藏';
-
-  @override
-  String alreadyShared(int count) {
-    return '$count 个已共享';
-  }
-
-  @override
-  String newDrawingsShared(int count, String plural) {
-    return '已共享 $count 个新绘图';
-  }
-
   @override
   String get shareDrawing => '共享绘图';
 
@@ -1948,12 +1376,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get forestRoads => '森林道路';
 
-  @override
-  String get showCadastralParcels => '显示地籍地块';
-
-  @override
-  String get showForestRoads => '显示森林道路';
-
   @override
   String get wmsOverlays => 'WMS 覆盖层';
 
@@ -2054,9 +1476,6 @@ class AppLocalizationsZh extends AppLocalizations {
     return '删除频道失败：$error';
   }
 
-  @override
-  String get allChannelSlotsInUse => '所有频道槽位都已在使用中（最多 39 个自定义频道）';
-
   @override
   String get createChannel => '创建频道';
 
@@ -2095,19 +1514,6 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get wizardConnectingFeature3 => '完全离线工作 - 无需互联网';
 
-  @override
-  String get wizardSimpleModeTitle => '简洁模式';
-
-  @override
-  String get wizardSimpleModeDescription =>
-      '刚接触 Mesh 网络？启用简洁模式以获得仅包含基本功能的简化界面。';
-
-  @override
-  String get wizardSimpleModeFeature1 => '对初学者友好的界面，包含核心功能';
-
-  @override
-  String get wizardSimpleModeFeature2 => '随时在设置中切换到高级模式';
-
   @override
   String get wizardChannelTitle => '频道';
 
@@ -2250,4 +1656,175 @@ class AppLocalizationsZh extends AppLocalizations {
 
   @override
   String get requestingVoice => '正在请求语音';
+
+  @override
+  String get device => '设备';
+
+  @override
+  String get change => '更改';
+
+  @override
+  String get wizardOverviewDescription =>
+      '此应用将 MeshCore 消息、SAR 现场更新、地图功能和设备工具整合到同一处。';
+
+  @override
+  String get wizardOverviewFeature1 => '在主消息标签页中发送私聊消息、房间消息和频道消息。';
+
+  @override
+  String get wizardOverviewFeature2 => '通过 mesh 网络共享 SAR 标记、地图绘图、语音片段和图像。';
+
+  @override
+  String get wizardOverviewFeature3 => '通过 BLE 或 TCP 连接，然后直接在应用中管理配套电台。';
+
+  @override
+  String get wizardMessagingTitle => '消息与现场报告';
+
+  @override
+  String get wizardMessagingDescription => '这里的消息不只是纯文本。应用已经支持多种操作载荷和传输流程。';
+
+  @override
+  String get wizardMessagingFeature1 => '通过一个编辑器发送私聊消息、房间消息和频道流量。';
+
+  @override
+  String get wizardMessagingFeature2 => '为常见现场报告创建 SAR 更新和可复用的 SAR 模板。';
+
+  @override
+  String get wizardMessagingFeature3 => '传输语音会话和图像，并在界面中显示进度和空口时间估算。';
+
+  @override
+  String get wizardConnectDeviceTitle => '连接设备';
+
+  @override
+  String get wizardConnectDeviceDescription =>
+      '连接你的 MeshCore 电台，选择名称，并在继续前应用无线电预设。';
+
+  @override
+  String get wizardSetupBadge => '设置';
+
+  @override
+  String get wizardOverviewBadge => '概览';
+
+  @override
+  String wizardConnectedToDevice(String deviceName) {
+    return '已连接到 $deviceName';
+  }
+
+  @override
+  String get wizardNoDeviceConnected => '尚未连接设备';
+
+  @override
+  String get wizardSkipForNow => '暂时跳过';
+
+  @override
+  String get wizardDeviceNameLabel => '设备名称';
+
+  @override
+  String get wizardDeviceNameHelp => '此名称会广播给其他 MeshCore 用户。';
+
+  @override
+  String get wizardConfigRegionLabel => '配置区域';
+
+  @override
+  String get wizardConfigRegionHelp =>
+      '使用完整的官方 MeshCore 预设列表。默认值为 EU/UK (Narrow)。';
+
+  @override
+  String get wizardPresetNote1 => '请确认所选预设符合你所在地区的无线电规定。';
+
+  @override
+  String get wizardPresetNote2 => '该列表与 MeshCore 配置工具的官方预设源保持一致。';
+
+  @override
+  String get wizardPresetNote3 => '在引导设置中默认保持选中 EU/UK (Narrow)。';
+
+  @override
+  String get wizardSaving => '正在保存...';
+
+  @override
+  String get wizardSaveAndContinue => '保存并继续';
+
+  @override
+  String get wizardEnterDeviceName => '继续前请输入设备名称。';
+
+  @override
+  String wizardDeviceSetupSaved(String deviceName, String presetName) {
+    return '已保存 $deviceName，配置为 $presetName。';
+  }
+
+  @override
+  String get wizardNetworkTitle => '联系人、房间和中继器';
+
+  @override
+  String get wizardNetworkDescription => '联系人标签页会整理你发现的网络以及随着时间学习到的路由。';
+
+  @override
+  String get wizardNetworkFeature1 => '在一个列表中查看团队成员、中继器、房间、频道和待处理广播。';
+
+  @override
+  String get wizardNetworkFeature2 => '当连接变得混乱时，使用智能 ping、房间登录、已学习路径和路由重置工具。';
+
+  @override
+  String get wizardNetworkFeature3 => '无需离开应用即可创建频道并管理网络目的地。';
+
+  @override
+  String get wizardMapOpsTitle => '地图、轨迹与共享几何';
+
+  @override
+  String get wizardMapOpsDescription => '应用地图直接与消息、跟踪和 SAR 叠加层关联，而不是单独的查看器。';
+
+  @override
+  String get wizardMapOpsFeature1 => '在地图上跟踪你自己的位置、队友位置和移动轨迹。';
+
+  @override
+  String get wizardMapOpsFeature2 => '打开消息中的绘图，内联预览，并在需要时将其从地图上移除。';
+
+  @override
+  String get wizardMapOpsFeature3 => '使用中继器地图视图和共享叠加层来了解现场网络覆盖范围。';
+
+  @override
+  String get wizardToolsTitle => '消息之外的工具';
+
+  @override
+  String get wizardToolsDescription => '这里不只有四个主标签页。应用还包含配置、诊断和可选的传感器工作流。';
+
+  @override
+  String get wizardToolsFeature1 => '打开设备配置以更改无线电设置、遥测、TX 功率和配套设备详情。';
+
+  @override
+  String get wizardToolsFeature2 => '当你需要受监控的传感器面板和快速刷新操作时，启用传感器标签页。';
+
+  @override
+  String get wizardToolsFeature3 => '在排查 mesh 网络问题时使用数据包日志、频谱扫描和开发者诊断。';
+
+  @override
+  String get contactInSensors => '在传感器中';
+
+  @override
+  String get contactAddToSensors => '添加到传感器';
+
+  @override
+  String get contactSetPath => '设置路径';
+
+  @override
+  String contactAddedToSensors(String contactName) {
+    return '已将 $contactName 添加到传感器';
+  }
+
+  @override
+  String contactFailedToClearRoute(String error) {
+    return '清除路由失败：$error';
+  }
+
+  @override
+  String get contactRouteCleared => '路由已清除';
+
+  @override
+  String contactRouteSet(String route) {
+    return '路由已设置：$route';
+  }
+
+  @override
+  String contactFailedToSetRoute(String error) {
+    return '设置路由失败：$error';
+  }
 }

lib/l10n/app_ru.arb

@@ -1,6 +1,5 @@
 {
   "@@locale": "ru",
-
   "appTitle": "MeshCore SAR",
   "messages": "Сообщения",
   "contacts": "Контакты",
@@ -8,7 +7,6 @@
   "settings": "Настройки",
   "connect": "Подключить",
   "disconnect": "Отключить",
-  "scanningForDevices": "Поиск устройств...",
   "noDevicesFound": "Устройства не найдены",
   "scanAgain": "Повторить поиск",
   "tapToConnect": "Нажмите для подключения",
@@ -18,11 +16,8 @@
   "locationPermissionRequired": "Доступ к геолокации необходим для GPS-трекинга и координации команды. Вы можете включить его позже в настройках.",
   "locationServicesDisabled": "Службы геолокации отключены. Пожалуйста, включите их в настройках.",
   "failedToGetGpsLocation": "Не удалось получить GPS-координаты",
-  "advertisedAtLocation": "Транслируется в {latitude}, {longitude}",
   "failedToAdvertise": "Ошибка трансляции: {error}",
-  "reconnecting": "Переподключение... ({attempt}/{max})",
   "cancelReconnection": "Отменить переподключение",
-  "mapManagement": "Управление картой",
   "general": "Основные",
   "theme": "Тема",
   "chooseTheme": "Выбрать тему",
@@ -38,33 +33,10 @@
   "followSystemTheme": "Следовать системной теме",
   "showRxTxIndicators": "Показывать индикаторы RX/TX",
   "displayPacketActivity": "Отображать активность пакетов в верхней панели",
-  "simpleMode": "Простой режим",
-  "simpleModeDescription": "Скрыть второстепенную информацию в сообщениях и контактах",
   "disableMap": "Отключить карту",
   "disableMapDescription": "Скрыть вкладку карты для экономии заряда батареи",
   "language": "Язык",
   "chooseLanguage": "Выбрать язык",
-  "english": "Английский",
-  "slovenian": "Словенский",
-  "croatian": "Хорватский",
-  "german": "Немецкий",
-  "spanish": "Испанский",
-  "french": "Французский",
-  "italian": "Итальянский",
-  "russian": "Русский",
-  "locationBroadcasting": "Трансляция местоположения",
-  "autoLocationTracking": "Авто-отслеживание геолокации",
-  "automaticallyBroadcastPosition": "Автоматически транслировать обновления позиции",
-  "configureTracking": "Настроить отслеживание",
-  "distanceAndTimeThresholds": "Пороги расстояния и времени",
-  "locationTrackingConfiguration": "Настройка отслеживания геолокации",
-  "configureWhenLocationBroadcasts": "Настройте условия отправки обновлений геолокации в mesh-сеть",
-  "minimumDistance": "Минимальное расстояние",
-  "broadcastAfterMoving": "Транслировать только после перемещения на {distance} м",
-  "maximumDistance": "Максимальное расстояние",
-  "alwaysBroadcastAfterMoving": "Всегда транслировать после перемещения на {distance} м",
-  "minimumTimeInterval": "Минимальный интервал времени",
-  "alwaysBroadcastEvery": "Всегда транслировать каждые {duration}",
   "save": "Сохранить",
   "cancel": "Отмена",
   "close": "Закрыть",
@@ -76,8 +48,6 @@
   "technologiesUsed": "Используемые технологии:",
   "technologiesList": "• Flutter для кросс-платформенной разработки\n• BLE (Bluetooth Low Energy) для mesh-сети\n• OpenStreetMap для карт\n• Provider для управления состоянием\n• SharedPreferences для локального хранилища",
   "moreInfo": "Подробнее",
-  "learnMoreAbout": "Узнать больше о MeshCore SAR",
-  "developer": "Разработчик",
   "packageName": "Имя пакета",
   "sampleData": "Тестовые данные",
   "sampleDataDescription": "Загрузить или очистить тестовые контакты, сообщения каналов и маркеры SAR",
@@ -98,7 +68,6 @@
   "delete": "Удалить",
   "viewOnMap": "Показать на карте",
   "refresh": "Обновить",
-  "sendDirectMessage": "Отправить",
   "resetPath": "Сбросить маршрут (перепроложить)",
   "publicKeyCopied": "Публичный ключ скопирован в буфер обмена",
   "copiedToClipboard": "{label} скопировано в буфер обмена",
@@ -132,8 +101,6 @@
   "deleteAllDrawingsConfirm": "Удалить все {count} рисун{plural} с карты?",
   "drawing": "Рисунок",
   "shareDrawingsCount": "Поделиться {count} рисун{plural}",
-  "sentDrawingsToRoom": "Отправлено {count} рисун{plural} в {roomName}",
-  "sharedDrawingsToRoom": "Передано {success}/{total} рисун{plural} в {roomName}",
   "showReceivedDrawings": "Показать полученные рисунки",
   "showingAllDrawings": "Показаны все рисунки",
   "showingOnlyYourDrawings": "Показаны только ваши рисунки",
@@ -141,17 +108,10 @@
   "showingSarMarkers": "Маркеры SAR отображаются",
   "hidingSarMarkers": "Маркеры SAR скрыты",
   "clearAll": "Очистить всё",
-  "noLocalDrawings": "Нет локальных рисунков для отправки",
   "publicChannel": "Публичный канал",
   "broadcastToAll": "Трансляция всем ближайшим узлам (временно)",
   "storedPermanently": "Сохранено постоянно в комнате",
-  "drawingsSentToPublicChannel": "Отправлено {count} рисун{plural} в публичный канал",
-  "drawingsSharedToPublicChannel": "Передано {success}/{total} рисунков в публичный канал",
   "notConnectedToDevice": "Устройство не подключено",
-  "directMessage": "Личное сообщение",
-  "directMessageSentTo": "Личное сообщение отправлено {contactName}",
-  "failedToSend": "Не удалось отправить: {error}",
-  "directMessageInfo": "Это сообщение будет отправлено напрямую {contactName}. Оно также появится в общей ленте сообщений.",
   "typeYourMessage": "Введите сообщение...",
   "quickLocationMarker": "Быстрый маркер местоположения",
   "markerType": "Тип маркера",
@@ -161,7 +121,6 @@
   "ephemeralBroadcastInfo": "Временно: передаётся по эфиру. Не сохраняется — узлы должны быть онлайн.",
   "persistentRoomInfo": "Постоянно: хранится неизменно в комнате. Синхронизируется автоматически и доступно офлайн.",
   "location": "Местоположение",
-  "myLocation": "Моё местоположение",
   "fromMap": "С карты",
   "gettingLocation": "Получение местоположения...",
   "locationError": "Ошибка геолокации",
@@ -180,19 +139,12 @@
   "failedToAddRoom": "Не удалось добавить комнату на устройство: {error}\n\nВозможно, комната ещё не объявила себя.\nПопробуйте подождать, пока комната не выйдет на связь.",
   "direct": "Напрямую",
   "flood": "Широковещательно",
-  "admin": "Администратор",
   "loggedIn": "Вход выполнен",
   "noGpsData": "Нет данных GPS",
   "distance": "Расстояние",
-  "pingingDirect": "Пинг {name} (напрямую по маршруту)...",
-  "pingingFlood": "Пинг {name} (широковещательно — нет маршрута)...",
   "directPingTimeout": "Таймаут прямого пинга — повтор {name} широковещательно...",
-  "pingSuccessful": "Пинг успешен: {name}{fallback}",
-  "viaFloodingFallback": " (через широковещательный резерв)",
   "pingFailed": "Пинг не удался: {name} — ответ не получен",
   "deleteContactConfirmation": "Вы уверены, что хотите удалить \"{name}\"?\n\nЭто удалит контакт как из приложения, так и с сопряжённого радиоустройства.",
-  "removingContact": "Удаление {name}...",
-  "contactRemoved": "Контакт \"{name}\" удалён",
   "failedToRemoveContact": "Не удалось удалить контакт: {error}",
   "type": "Тип",
   "publicKey": "Публичный ключ",
@@ -207,7 +159,6 @@
   "passwordSaved": "Пароль сохранён",
   "locationColon": "Местоположение:",
   "telemetry": "Телеметрия",
-  "requestingTelemetry": "Запрос телеметрии от {name}...",
   "voltage": "Напряжение",
   "battery": "Батарея",
   "temperature": "Температура",
@@ -231,7 +182,6 @@
   "fire": "Пожар",
   "stagingArea": "Место сбора",
   "showAll": "Показать все",
-  "nearbyContacts": "Ближайшие контакты",
   "locationUnavailable": "Местоположение недоступно",
   "ahead": "впереди",
   "degreesRight": "{degrees}° вправо",
@@ -243,83 +193,21 @@
   "repeaters": "Ретрансляторы",
   "rooms": "Комнаты",
   "channels": "Каналы",
-  "cacheStatistics": "Статистика кэша",
-  "totalTiles": "Всего тайлов",
-  "cacheSize": "Размер кэша",
-  "storeName": "Имя хранилища",
-  "noCacheStatistics": "Статистика кэша недоступна",
-  "downloadRegion": "Скачать регион",
-  "mapLayer": "Слой карты",
-  "regionBounds": "Границы региона",
-  "north": "Север",
-  "south": "Юг",
-  "east": "Восток",
-  "west": "Запад",
-  "zoomLevels": "Уровни масштаба",
-  "minZoom": "Мин: {zoom}",
-  "maxZoom": "Макс: {zoom}",
-  "downloadingDots": "Загрузка...",
-  "cancelDownload": "Отменить загрузку",
-  "downloadRegionButton": "Скачать регион",
-  "downloadNote": "Внимание: большие регионы или высокие уровни масштаба могут потребовать значительного времени и места.",
-  "cacheManagement": "Управление кэшем",
-  "clearAllMaps": "Очистить все карты",
-  "clearMapsConfirmTitle": "Очистить все карты",
-  "clearMapsConfirmMessage": "Вы уверены, что хотите удалить все загруженные карты? Это действие нельзя отменить.",
-  "mapDownloadCompleted": "Загрузка карты завершена!",
-  "cacheClearedSuccessfully": "Кэш успешно очищен!",
-  "downloadCancelled": "Загрузка отменена",
-  "startingDownload": "Начало загрузки...",
-  "downloadingMapTiles": "Загрузка тайлов карты...",
-  "downloadCompletedSuccessfully": "Загрузка успешно завершена!",
-  "cancellingDownload": "Отмена загрузки...",
-  "errorLoadingStats": "Ошибка загрузки статистики: {error}",
-  "downloadFailed": "Ошибка загрузки: {error}",
-  "cancelFailed": "Ошибка отмены: {error}",
-  "clearCacheFailed": "Ошибка очистки кэша: {error}",
-  "minZoomError": "Мин. масштаб: {error}",
-  "maxZoomError": "Макс. масштаб: {error}",
-  "minZoomGreaterThanMax": "Минимальный масштаб должен быть меньше или равен максимальному",
   "selectMapLayer": "Выбрать слой карты",
-  "mapOptions": "Параметры карты",
-  "showLegend": "Показать легенду",
-  "displayMarkerTypeCounts": "Отображать счётчики типов маркеров",
-  "rotateMapWithHeading": "Поворачивать карту по курсу",
-  "mapFollowsDirection": "Карта следует вашему направлению движения",
-  "resetMapRotation": "Сбросить поворот",
-  "resetMapRotationTooltip": "Вернуть карту на север",
-  "showMapDebugInfo": "Показать отладочную информацию карты",
-  "displayZoomLevelBounds": "Отображать уровень масштаба и границы",
-  "fullscreenMode": "Полноэкранный режим",
-  "hideUiFullMapView": "Скрыть все элементы интерфейса для полного вида карты",
   "openStreetMap": "OpenStreetMap",
   "openTopoMap": "OpenTopoMap",
   "esriSatellite": "ESRI Спутник",
   "googleHybrid": "Google Гибрид",
   "googleRoadmap": "Google Дороги",
   "googleTerrain": "Google Рельеф",
-  "downloadVisibleArea": "Скачать видимую область",
-  "initializingMap": "Инициализация карты...",
   "dragToPosition": "Перетащите для позиционирования",
   "createSarMarker": "Создать маркер SAR",
   "compass": "Компас",
   "navigationAndContacts": "Навигация и контакты",
   "sarAlert": "ТРЕВОГА SAR",
-  "messageSentToPublicChannel": "Сообщение отправлено в публичный канал",
-  "pleaseSelectRoomToSendSar": "Пожалуйста, выберите комнату для отправки маркера SAR",
-  "failedToSendSarMarker": "Не удалось отправить маркер SAR: {error}",
-  "sarMarkerSentTo": "Маркер SAR отправлен в {roomName}",
-  "notConnectedCannotSync": "Нет подключения — синхронизация невозможна",
-  "syncedMessageCount": "Синхронизировано {count} сообщение(й)",
-  "noNewMessages": "Новых сообщений нет",
-  "syncFailed": "Синхронизация не удалась: {error}",
-  "failedToResendMessage": "Не удалось повторно отправить сообщение",
-  "retryingMessage": "Повторная отправка сообщения...",
-  "retryFailed": "Повтор не удался: {error}",
   "textCopiedToClipboard": "Текст скопирован в буфер обмена",
   "cannotReplySenderMissing": "Не удаётся ответить: нет информации об отправителе",
   "cannotReplyContactNotFound": "Не удаётся ответить: контакт не найден",
-  "messageDeleted": "Сообщение удалено",
   "copyText": "Копировать текст",
   "saveAsTemplate": "Сохранить как шаблон",
   "templateSaved": "Шаблон успешно сохранён",
@@ -329,8 +217,6 @@
   "shareLocation": "Поделиться местоположением",
   "shareLocationText": "{markerInfo}\n\nКоординаты: {lat}, {lon}\n\nGoogle Maps: {url}",
   "sarLocationShare": "Местоположение SAR",
-  "locationShared": "Местоположение передано",
-  "refreshedContacts": "Контакты обновлены",
   "justNow": "Только что",
   "minutesAgo": "{minutes}м назад",
   "hoursAgo": "{hours}ч назад",
@@ -362,39 +248,10 @@
   "txPowerDbm": "Мощность TX (дБм)",
   "maxPowerDbm": "Макс: {power} дБм",
   "you": "Вы",
-  "offlineVectorMaps": "Офлайн-векторные карты",
-  "offlineVectorMapsDescription": "Импортируйте офлайн-векторные тайлы карт (формат MBTiles) для использования без интернета",
-  "importMbtiles": "Импортировать файл MBTiles",
-  "importMbtilesNote": "Поддерживаются файлы MBTiles с векторными тайлами (формат PBF/MVT). Отлично подходят выгрузки Geofabrik!",
-  "noMbtilesFiles": "Офлайн-векторные карты не найдены",
-  "mbtilesImportedSuccessfully": "Файл MBTiles успешно импортирован",
-  "failedToImportMbtiles": "Не удалось импортировать файл MBTiles",
-  "deleteMbtilesConfirmTitle": "Удалить офлайн-карту",
-  "deleteMbtilesConfirmMessage": "Вы уверены, что хотите удалить \"{name}\"? Офлайн-карта будет удалена безвозвратно.",
-  "mbtilesDeletedSuccessfully": "Офлайн-карта успешно удалена",
-  "failedToDeleteMbtiles": "Не удалось удалить офлайн-карту",
-  "importExportCachedTiles": "Импорт/Экспорт кэшированных тайлов",
-  "importExportDescription": "Резервное копирование, обмен и восстановление загруженных тайлов карт между устройствами",
-  "exportTilesToFile": "Экспортировать тайлы в файл",
-  "importTilesFromFile": "Импортировать тайлы из файла",
-  "selectExportLocation": "Выберите место для экспорта",
-  "selectImportFile": "Выберите архив тайлов",
-  "exportingTiles": "Экспорт тайлов...",
-  "importingTiles": "Импорт тайлов...",
-  "exportSuccess": "Экспортировано {count} тайлов",
-  "importSuccess": "Импортировано {count} хранилищ",
   "exportFailed": "Ошибка экспорта: {error}",
   "importFailed": "Ошибка импорта: {error}",
-  "exportNote": "Создаёт сжатый архив (.fmtc), которым можно поделиться и импортировать на других устройствах.",
-  "importNote": "Импортирует тайлы карт из ранее экспортированного архива. Тайлы будут объединены с существующим кэшем.",
-  "noTilesToExport": "Нет доступных тайлов для экспорта",
-  "archiveContainsStores": "Архив содержит {count} хранилищ",
-  "vectorTiles": "Векторные тайлы",
-  "schema": "Схема",
   "unknown": "Неизвестно",
-  "bounds": "Границы",
   "onlineLayers": "Онлайн-слои",
-  "offlineLayers": "Офлайн-слои",
   "locationTrail": "Трек местоположения",
   "showTrailOnMap": "Показать трек на карте",
   "trailVisible": "Трек отображается на карте",
@@ -407,17 +264,6 @@
   "noTrailRecorded": "Трек ещё не записан",
   "startTrackingToRecord": "Запустите отслеживание геолокации для записи трека",
   "trailControls": "Управление треком",
-  "exportTrailToGpx": "Экспортировать трек в GPX",
-  "importTrailFromGpx": "Импортировать трек из GPX",
-  "trailExportedSuccessfully": "Трек успешно экспортирован!",
-  "failedToExportTrail": "Не удалось экспортировать трек",
-  "failedToImportTrail": "Не удалось импортировать трек: {error}",
-  "importTrail": "Импортировать трек",
-  "importTrailQuestion": "Импортировать трек из {pointCount} точек?\n\nВы можете заменить текущий трек или просмотреть его рядом.",
-  "viewAlongside": "Просмотреть рядом",
-  "replaceCurrent": "Заменить текущий",
-  "trailImported": "Трек импортирован! ({pointCount} точек)",
-  "trailReplaced": "Трек заменён! ({pointCount} точек)",
   "contactTrails": "Треки контактов",
   "showAllContactTrails": "Показать все треки контактов",
   "noContactsWithLocationHistory": "Нет контактов с историей местоположения",
@@ -496,10 +342,8 @@
   "searchRecipients": "Поиск получателей...",
   "noContactsFound": "Контакты не найдены",
   "noRoomsFound": "Комнаты не найдены",
-  "noContactsOrRoomsAvailable": "Нет доступных контактов или комнат",
   "noRecipientsAvailable": "Нет доступных получателей",
   "noChannelsFound": "Каналы не найдены",
-  "messagesWillBeSentToPublicChannel": "Сообщения будут отправлены в публичный канал",
   "newMessage": "Новое сообщение",
   "channel": "Канал",
   "samplePoliceLead": "Руководитель группы полиции",
@@ -557,18 +401,11 @@
   "hideFromMap": "Скрыть с карты",
   "lineDrawing": "Линия",
   "rectangleDrawing": "Прямоугольник",
-  "coordinatesCopiedToClipboard": "Координаты скопированы в буфер обмена",
   "manualCoordinates": "Ввод координат вручную",
   "enterCoordinatesManually": "Ввести координаты вручную",
   "latitudeLabel": "Широта",
   "longitudeLabel": "Долгота",
-  "invalidLatitude": "Неверная широта (от -90 до 90)",
-  "invalidLongitude": "Неверная долгота (от -180 до 180)",
   "exampleCoordinates": "Пример: 55.7558, 37.6173",
-  "drawingShared": "Рисунок на карте",
-  "drawingHidden": "Рисунок скрыт с карты",
-  "alreadyShared": "{count, plural, =1{1 уже передан} other{{count} уже передано}}",
-  "newDrawingsShared": "Передано {count} новых рисунк{plural}",
   "shareDrawing": "Поделиться рисунком",
   "shareWithAllNearbyDevices": "Поделиться со всеми ближайшими устройствами",
   "shareToRoom": "Отправить в комнату",
@@ -586,8 +423,6 @@
   "updateLater": "Позже",
   "cadastralParcels": "Кадастровые участки",
   "forestRoads": "Лесные дороги",
-  "showCadastralParcels": "Показать кадастровые участки",
-  "showForestRoads": "Показать лесные дороги",
   "wmsOverlays": "WMS-наложения",
   "hikingTrails": "Туристические маршруты",
   "mainRoads": "Главные дороги",
@@ -619,7 +454,6 @@
   "deleteChannelConfirmation": "Вы уверены, что хотите удалить канал \"{channelName}\"? Это действие нельзя отменить.",
   "channelDeletedSuccessfully": "Канал успешно удалён",
   "channelDeletionFailed": "Не удалось удалить канал: {error}",
-  "allChannelSlotsInUse": "Все слоты каналов заняты (максимум 39 пользовательских каналов)",
   "createChannel": "Создать канал",
   "wizardBack": "Назад",
   "wizardSkip": "Пропустить",
@@ -632,10 +466,6 @@
   "wizardConnectingFeature1": "Поиск ближайших устройств MeshCore",
   "wizardConnectingFeature2": "Сопряжение с радиоустройством по Bluetooth",
   "wizardConnectingFeature3": "Работает полностью офлайн — интернет не нужен",
-  "wizardSimpleModeTitle": "Простой режим",
-  "wizardSimpleModeDescription": "Впервые работаете с mesh-сетью? Включите простой режим для упрощённого интерфейса с основными функциями.",
-  "wizardSimpleModeFeature1": "Удобный для новичков интерфейс с основными функциями",
-  "wizardSimpleModeFeature2": "Переключиться в расширенный режим можно в любое время в настройках",
   "wizardChannelTitle": "Каналы",
   "wizardChannelDescription": "Транслируйте сообщения всем участникам канала — идеально для общих объявлений и координации команды.",
   "wizardChannelFeature1": "Публичный канал для общей связи команды",
@@ -681,5 +511,57 @@
   "rawDump": "Необработанные данные",
   "cannotRetryMissingRecipient": "Повтор невозможен: нет информации о получателе",
   "voiceUnavailable": "Голос сейчас недоступен",
-  "requestingVoice": "Запрос голоса"
+  "requestingVoice": "Запрос голоса",
+  "device": "устройство",
+  "change": "Изменить",
+  "wizardOverviewDescription": "Это приложение объединяет сообщения MeshCore, полевые обновления SAR, карты и инструменты устройства в одном месте.",
+  "wizardOverviewFeature1": "Отправляйте личные сообщения, сообщения комнат и сообщения каналов из основной вкладки «Сообщения».",
+  "wizardOverviewFeature2": "Делитесь SAR-маркерами, рисунками на карте, голосовыми клипами и изображениями через mesh-сеть.",
+  "wizardOverviewFeature3": "Подключайтесь по BLE или TCP, а затем управляйте сопутствующей радиостанцией прямо из приложения.",
+  "wizardMessagingTitle": "Сообщения и полевые отчёты",
+  "wizardMessagingDescription": "Здесь сообщения это больше, чем просто текст. Приложение уже поддерживает несколько видов операционных данных и сценариев передачи.",
+  "wizardMessagingFeature1": "Отправляйте личные сообщения, сообщения комнат и трафик каналов из одного редактора.",
+  "wizardMessagingFeature2": "Создавайте обновления SAR и повторно используемые шаблоны SAR для типовых полевых отчётов.",
+  "wizardMessagingFeature3": "Передавайте голосовые сессии и изображения с индикатором прогресса и оценкой эфирного времени в интерфейсе.",
+  "wizardConnectDeviceTitle": "Подключить устройство",
+  "wizardConnectDeviceDescription": "Подключите свою радиостанцию MeshCore, выберите имя и примените радиопрофиль перед продолжением.",
+  "wizardSetupBadge": "Настройка",
+  "wizardOverviewBadge": "Обзор",
+  "wizardConnectedToDevice": "Подключено к {deviceName}",
+  "wizardNoDeviceConnected": "Устройство ещё не подключено",
+  "wizardSkipForNow": "Пропустить пока",
+  "wizardDeviceNameLabel": "Имя устройства",
+  "wizardDeviceNameHelp": "Это имя транслируется другим пользователям MeshCore.",
+  "wizardConfigRegionLabel": "Регион конфигурации",
+  "wizardConfigRegionHelp": "Используется полный официальный список профилей MeshCore. По умолчанию выбран EU/UK (Narrow).",
+  "wizardPresetNote1": "Убедитесь, что выбранный профиль соответствует местным радиоправилам.",
+  "wizardPresetNote2": "Список соответствует официальному потоку профилей инструмента MeshCore config.",
+  "wizardPresetNote3": "Для онбординга по умолчанию остаётся выбран EU/UK (Narrow).",
+  "wizardSaving": "Сохранение...",
+  "wizardSaveAndContinue": "Сохранить и продолжить",
+  "wizardEnterDeviceName": "Введите имя устройства перед продолжением.",
+  "wizardDeviceSetupSaved": "Сохранено: {deviceName}, профиль {presetName}.",
+  "wizardNetworkTitle": "Контакты, комнаты и ретрансляторы",
+  "wizardNetworkDescription": "Вкладка «Контакты» организует сеть, которую вы обнаруживаете, и маршруты, которые вы узнаёте со временем.",
+  "wizardNetworkFeature1": "Просматривайте участников команды, ретрансляторы, комнаты, каналы и ожидающие объявления в одном списке.",
+  "wizardNetworkFeature2": "Используйте smart ping, вход в комнаты, изученные пути и инструменты сброса маршрутов, когда связь становится нестабильной.",
+  "wizardNetworkFeature3": "Создавайте каналы и управляйте сетевыми назначениями, не покидая приложение.",
+  "wizardMapOpsTitle": "Карта, следы и общая геометрия",
+  "wizardMapOpsDescription": "Карта приложения напрямую связана с сообщениями, отслеживанием и SAR-слоями, а не является отдельным просмотрщиком.",
+  "wizardMapOpsFeature1": "Отслеживайте свою позицию, местоположение команды и траектории движения на карте.",
+  "wizardMapOpsFeature2": "Открывайте рисунки из сообщений, просматривайте их прямо в интерфейсе и удаляйте с карты при необходимости.",
+  "wizardMapOpsFeature3": "Используйте карты ретрансляторов и общие слои, чтобы понимать покрытие сети в поле.",
+  "wizardToolsTitle": "Инструменты помимо сообщений",
+  "wizardToolsDescription": "Здесь есть больше, чем четыре основные вкладки. Приложение также включает настройку, диагностику и необязательные сценарии датчиков.",
+  "wizardToolsFeature1": "Откройте настройки устройства, чтобы изменить параметры радио, телеметрию, мощность TX и сведения о сопутствующем устройстве.",
+  "wizardToolsFeature2": "Включите вкладку «Датчики», если нужны панели наблюдаемых датчиков и быстрые действия обновления.",
+  "wizardToolsFeature3": "Используйте журналы пакетов, сканирование спектра и диагностику разработчика для устранения проблем mesh-сети.",
+  "contactInSensors": "В датчиках",
+  "contactAddToSensors": "Добавить в датчики",
+  "contactSetPath": "Задать путь",
+  "contactAddedToSensors": "{contactName} добавлен в Датчики",
+  "contactFailedToClearRoute": "Не удалось очистить маршрут: {error}",
+  "contactRouteCleared": "Маршрут очищен",
+  "contactRouteSet": "Маршрут задан: {route}",
+  "contactFailedToSetRoute": "Не удалось задать маршрут: {error}"
 }

lib/main.dart

@@ -1,4 +1,7 @@
-import 'dart:io' show Platform;
+import 'dart:async';
+
+import 'package:flutter/foundation.dart'
+    show TargetPlatform, defaultTargetPlatform, kIsWeb;
 import 'package:flutter/material.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:provider/provider.dart';
@@ -19,6 +22,7 @@ import 'services/voice_codec_service.dart';
 import 'services/voice_player_service.dart';
 import 'services/notification_service.dart';
 import 'services/locale_preferences.dart';
+import 'services/mesh_map_nodes_service.dart';
 import 'services/update_checker_service.dart';
 import 'services/wizard_preferences.dart';
 import 'screens/home_screen.dart';
@@ -70,6 +74,9 @@ class _MeshCoreSarAppState extends State<MeshCoreSarApp> {
     // Shows notification if update is available
     _checkForUpdates();
 
+    // Refresh remote mesh node cache in background when the app starts.
+    unawaited(MeshMapNodesService.syncInBackgroundIfStale());
+
     setState(() {
       _wizardCompleted = wizardCompleted;
       _isInitialized = true;
@@ -158,7 +165,7 @@ class _MeshCoreSarAppState extends State<MeshCoreSarApp> {
   /// Shows notification if update is available
   Future<void> _checkForUpdates() async {
     // Only check for updates on Android
-    if (!Platform.isAndroid) {
+    if (kIsWeb || defaultTargetPlatform != TargetPlatform.android) {
       debugPrint('[UpdateChecker] Skipping update check (not Android)');
       return;
     }
@@ -324,7 +331,7 @@ class _MeshCoreSarAppState extends State<MeshCoreSarApp> {
 
         // Wrap in SafeArea for Android only to fix navigation bar overlap (API ≥36)
         // iOS doesn't need SafeArea wrapping (causes extra black space at bottom)
-        if (Platform.isAndroid) {
+        if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
           return SafeArea(
             left: false,
             right: false,

lib/models/contact.dart

@@ -240,6 +240,5 @@ extension ContactLocalization on Contact {
     return '$routeHopCount hop${routeHopCount == 1 ? '' : 's'} via $routeHashSize-byte hashes';
   }
 
-  bool get routeSupportsLegacyRawTransport =>
-      routeHasPath && routeSignedPathLen >= 0;
+  bool get routeSupportsLegacyRawTransport => routeHasPath;
 }

lib/models/contact_group.dart

@@ -0,0 +1,31 @@
+class SavedContactGroup {
+  final String id;
+  final String sectionKey;
+  final String label;
+  final String query;
+  final DateTime createdAt;
+
+  const SavedContactGroup({
+    required this.id,
+    required this.sectionKey,
+    required this.label,
+    required this.query,
+    required this.createdAt,
+  });
+
+  SavedContactGroup copyWith({
+    String? id,
+    String? sectionKey,
+    String? label,
+    String? query,
+    DateTime? createdAt,
+  }) {
+    return SavedContactGroup(
+      id: id ?? this.id,
+      sectionKey: sectionKey ?? this.sectionKey,
+      label: label ?? this.label,
+      query: query ?? this.query,
+      createdAt: createdAt ?? this.createdAt,
+    );
+  }
+}

lib/models/message_route_metadata.dart

@@ -0,0 +1,79 @@
+import 'path_selection.dart';
+
+class MessageRouteMetadata {
+  final PathSelectionMode mode;
+  final bool routerFallbackAttempted;
+  final String? relayName;
+  final String? relayKey6;
+  final String? canonicalPath;
+  final int? hopCount;
+
+  const MessageRouteMetadata({
+    required this.mode,
+    required this.routerFallbackAttempted,
+    this.relayName,
+    this.relayKey6,
+    this.canonicalPath,
+    this.hopCount,
+  });
+
+  factory MessageRouteMetadata.fromSelection(
+    PathSelection selection, {
+    required bool routerFallbackAttempted,
+  }) {
+    return MessageRouteMetadata(
+      mode: selection.mode,
+      routerFallbackAttempted: routerFallbackAttempted,
+      relayName: selection.relayName,
+      relayKey6: selection.relayKey6,
+      canonicalPath: selection.canonicalPath.isEmpty
+          ? null
+          : selection.canonicalPath,
+      hopCount: selection.hopCount > 0 ? selection.hopCount : null,
+    );
+  }
+
+  String get modeLabel {
+    switch (mode) {
+      case PathSelectionMode.directCurrent:
+        return 'Current direct path';
+      case PathSelectionMode.directHistorical:
+        return 'Rotated direct path';
+      case PathSelectionMode.flood:
+        return 'Flood route';
+      case PathSelectionMode.nearestRouter:
+        final suffix = relayName?.trim().isNotEmpty == true
+            ? ' via $relayName'
+            : relayKey6?.trim().isNotEmpty == true
+            ? ' via $relayKey6'
+            : '';
+        return 'Nearest router$suffix';
+    }
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'mode': mode.name,
+      'router_fallback_attempted': routerFallbackAttempted,
+      'relay_name': relayName,
+      'relay_key6': relayKey6,
+      'canonical_path': canonicalPath,
+      'hop_count': hopCount,
+    };
+  }
+
+  factory MessageRouteMetadata.fromJson(Map<String, dynamic> json) {
+    return MessageRouteMetadata(
+      mode: PathSelectionMode.values.firstWhere(
+        (value) => value.name == json['mode'],
+        orElse: () => PathSelectionMode.directCurrent,
+      ),
+      routerFallbackAttempted:
+          json['router_fallback_attempted'] as bool? ?? false,
+      relayName: json['relay_name'] as String?,
+      relayKey6: json['relay_key6'] as String?,
+      canonicalPath: json['canonical_path'] as String?,
+      hopCount: json['hop_count'] as int?,
+    );
+  }
+}

lib/models/path_history.dart

@@ -0,0 +1,197 @@
+enum PathRecordSource { learned, observed }
+
+class PathRecord {
+  final List<int> pathBytes;
+  final int hopCount;
+  final int hashSize;
+  final PathRecordSource source;
+  final int successCount;
+  final int failureCount;
+  final int lastRoundTripTimeMs;
+  final DateTime lastUsedAt;
+
+  const PathRecord({
+    required this.pathBytes,
+    required this.hopCount,
+    required this.hashSize,
+    required this.source,
+    required this.successCount,
+    required this.failureCount,
+    required this.lastRoundTripTimeMs,
+    required this.lastUsedAt,
+  });
+
+  String get signature =>
+      pathBytes.map((byte) => byte.toRadixString(16).padLeft(2, '0')).join();
+
+  double get successRate =>
+      (successCount + 1) / (successCount + failureCount + 2);
+
+  PathRecord copyWith({
+    List<int>? pathBytes,
+    int? hopCount,
+    int? hashSize,
+    PathRecordSource? source,
+    int? successCount,
+    int? failureCount,
+    int? lastRoundTripTimeMs,
+    DateTime? lastUsedAt,
+  }) {
+    return PathRecord(
+      pathBytes: pathBytes ?? this.pathBytes,
+      hopCount: hopCount ?? this.hopCount,
+      hashSize: hashSize ?? this.hashSize,
+      source: source ?? this.source,
+      successCount: successCount ?? this.successCount,
+      failureCount: failureCount ?? this.failureCount,
+      lastRoundTripTimeMs: lastRoundTripTimeMs ?? this.lastRoundTripTimeMs,
+      lastUsedAt: lastUsedAt ?? this.lastUsedAt,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'path_bytes': pathBytes,
+      'hop_count': hopCount,
+      'hash_size': hashSize,
+      'source': source.name,
+      'success_count': successCount,
+      'failure_count': failureCount,
+      'last_round_trip_time_ms': lastRoundTripTimeMs,
+      'last_used_at': lastUsedAt.toIso8601String(),
+    };
+  }
+
+  factory PathRecord.fromJson(Map<String, dynamic> json) {
+    return PathRecord(
+      pathBytes: (json['path_bytes'] as List<dynamic>? ?? const <dynamic>[])
+          .map((value) => value as int)
+          .toList(),
+      hopCount: json['hop_count'] as int? ?? 0,
+      hashSize: json['hash_size'] as int? ?? 1,
+      source: PathRecordSource.values.firstWhere(
+        (value) => value.name == (json['source'] as String? ?? 'learned'),
+        orElse: () => PathRecordSource.learned,
+      ),
+      successCount: json['success_count'] as int? ?? 0,
+      failureCount: json['failure_count'] as int? ?? 0,
+      lastRoundTripTimeMs: json['last_round_trip_time_ms'] as int? ?? 0,
+      lastUsedAt:
+          DateTime.tryParse(json['last_used_at'] as String? ?? '') ??
+          DateTime.fromMillisecondsSinceEpoch(0),
+    );
+  }
+}
+
+class FloodPathStats {
+  final int successCount;
+  final int failureCount;
+  final int lastRoundTripTimeMs;
+  final DateTime? lastUsedAt;
+
+  const FloodPathStats({
+    required this.successCount,
+    required this.failureCount,
+    required this.lastRoundTripTimeMs,
+    required this.lastUsedAt,
+  });
+
+  const FloodPathStats.empty()
+    : successCount = 0,
+      failureCount = 0,
+      lastRoundTripTimeMs = 0,
+      lastUsedAt = null;
+
+  FloodPathStats copyWith({
+    int? successCount,
+    int? failureCount,
+    int? lastRoundTripTimeMs,
+    DateTime? lastUsedAt,
+  }) {
+    return FloodPathStats(
+      successCount: successCount ?? this.successCount,
+      failureCount: failureCount ?? this.failureCount,
+      lastRoundTripTimeMs: lastRoundTripTimeMs ?? this.lastRoundTripTimeMs,
+      lastUsedAt: lastUsedAt ?? this.lastUsedAt,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'success_count': successCount,
+      'failure_count': failureCount,
+      'last_round_trip_time_ms': lastRoundTripTimeMs,
+      'last_used_at': lastUsedAt?.toIso8601String(),
+    };
+  }
+
+  factory FloodPathStats.fromJson(Map<String, dynamic> json) {
+    return FloodPathStats(
+      successCount: json['success_count'] as int? ?? 0,
+      failureCount: json['failure_count'] as int? ?? 0,
+      lastRoundTripTimeMs: json['last_round_trip_time_ms'] as int? ?? 0,
+      lastUsedAt: DateTime.tryParse(json['last_used_at'] as String? ?? ''),
+    );
+  }
+}
+
+class ContactPathHistory {
+  final String contactPublicKeyHex;
+  final List<PathRecord> directPaths;
+  final FloodPathStats floodStats;
+  final int rotationIndex;
+
+  const ContactPathHistory({
+    required this.contactPublicKeyHex,
+    required this.directPaths,
+    required this.floodStats,
+    required this.rotationIndex,
+  });
+
+  const ContactPathHistory.empty(this.contactPublicKeyHex)
+    : directPaths = const <PathRecord>[],
+      floodStats = const FloodPathStats.empty(),
+      rotationIndex = 0;
+
+  ContactPathHistory copyWith({
+    List<PathRecord>? directPaths,
+    FloodPathStats? floodStats,
+    int? rotationIndex,
+  }) {
+    return ContactPathHistory(
+      contactPublicKeyHex: contactPublicKeyHex,
+      directPaths: directPaths ?? this.directPaths,
+      floodStats: floodStats ?? this.floodStats,
+      rotationIndex: rotationIndex ?? this.rotationIndex,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'direct_paths': directPaths.map((record) => record.toJson()).toList(),
+      'flood_stats': floodStats.toJson(),
+      'rotation_index': rotationIndex,
+    };
+  }
+
+  List<PathRecord> get observedPaths => directPaths
+      .where((record) => record.source == PathRecordSource.observed)
+      .toList();
+
+  factory ContactPathHistory.fromJson(
+    String contactPublicKeyHex,
+    Map<String, dynamic> json,
+  ) {
+    return ContactPathHistory(
+      contactPublicKeyHex: contactPublicKeyHex,
+      directPaths: (json['direct_paths'] as List<dynamic>? ?? const <dynamic>[])
+          .whereType<Map<String, dynamic>>()
+          .map(PathRecord.fromJson)
+          .toList(),
+      floodStats: json['flood_stats'] is Map<String, dynamic>
+          ? FloodPathStats.fromJson(json['flood_stats'] as Map<String, dynamic>)
+          : const FloodPathStats.empty(),
+      rotationIndex: json['rotation_index'] as int? ?? 0,
+    );
+  }
+}

lib/models/path_selection.dart

@@ -0,0 +1,65 @@
+import 'dart:typed_data';
+
+enum PathSelectionMode { directCurrent, directHistorical, flood, nearestRouter }
+
+class PathSelection {
+  final PathSelectionMode mode;
+  final Uint8List pathBytes;
+  final int hopCount;
+  final int hashSize;
+  final String? relayName;
+  final String? relayKey6;
+
+  const PathSelection({
+    required this.mode,
+    required this.pathBytes,
+    required this.hopCount,
+    required this.hashSize,
+    this.relayName,
+    this.relayKey6,
+  });
+
+  PathSelection.flood()
+    : mode = PathSelectionMode.flood,
+      pathBytes = Uint8List(0),
+      hopCount = -1,
+      hashSize = 1,
+      relayName = null,
+      relayKey6 = null;
+
+  bool get usesFlood => mode == PathSelectionMode.flood;
+  bool get hasDirectPath => !usesFlood && pathBytes.isNotEmpty && hopCount > 0;
+
+  String get canonicalPath {
+    if (!hasDirectPath) return '';
+    final hops = <String>[];
+    for (var index = 0; index < pathBytes.length; index += hashSize) {
+      hops.add(
+        pathBytes
+            .sublist(index, index + hashSize)
+            .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
+            .join()
+            .toUpperCase(),
+      );
+    }
+    return hops.join(',');
+  }
+
+  PathSelection copyWith({
+    PathSelectionMode? mode,
+    Uint8List? pathBytes,
+    int? hopCount,
+    int? hashSize,
+    String? relayName,
+    String? relayKey6,
+  }) {
+    return PathSelection(
+      mode: mode ?? this.mode,
+      pathBytes: pathBytes ?? this.pathBytes,
+      hopCount: hopCount ?? this.hopCount,
+      hashSize: hashSize ?? this.hashSize,
+      relayName: relayName ?? this.relayName,
+      relayKey6: relayKey6 ?? this.relayKey6,
+    );
+  }
+}

lib/providers/app_provider.dart

@@ -12,10 +12,15 @@ import 'image_provider.dart' as ip;
 import 'helpers/fragment_ack_wait_registry.dart';
 import 'helpers/session_metadata_restore.dart';
 import '../services/location_tracking_service.dart';
+import '../services/messaging_route_preferences.dart';
+import '../services/nearest_router_selector.dart';
 import '../services/packet_capture_storage_service.dart';
+import '../services/path_history_service.dart';
+import '../services/route_hash_preferences.dart';
 import '../models/contact.dart';
 import '../models/message.dart';
 import '../models/ble_packet_log.dart';
+import '../models/path_selection.dart';
 import '../models/message_reception_details.dart';
 import '../utils/drawing_message_parser.dart';
 import '../utils/raw_route_probe.dart';
@@ -24,6 +29,32 @@ import '../utils/image_message_parser.dart';
 import '../utils/media_swarm_protocol.dart';
 import '../utils/message_airtime_estimator.dart';
 import '../utils/fast_gps_packet.dart';
+import '../utils/log_rx_route_decoder.dart';
+
+class _DirectMessageRouteSession {
+  final PathSelection currentSelection;
+  final ParsedContactRoute? originalRoute;
+  final bool routerFallbackAttempted;
+
+  const _DirectMessageRouteSession({
+    required this.currentSelection,
+    required this.originalRoute,
+    required this.routerFallbackAttempted,
+  });
+
+  _DirectMessageRouteSession copyWith({
+    PathSelection? currentSelection,
+    ParsedContactRoute? originalRoute,
+    bool? routerFallbackAttempted,
+  }) {
+    return _DirectMessageRouteSession(
+      currentSelection: currentSelection ?? this.currentSelection,
+      originalRoute: originalRoute ?? this.originalRoute,
+      routerFallbackAttempted:
+          routerFallbackAttempted ?? this.routerFallbackAttempted,
+    );
+  }
+}
 
 /// Main App Provider - coordinates all other providers
 class AppProvider with ChangeNotifier {
@@ -60,8 +91,30 @@ class AppProvider with ChangeNotifier {
   bool get isVoiceCompressorEnabled => _isVoiceCompressorEnabled;
   bool _isVoiceLimiterEnabled = true;
   bool get isVoiceLimiterEnabled => _isVoiceLimiterEnabled;
+  bool _isVoiceAutoGainEnabled = false;
+  bool get isVoiceAutoGainEnabled => _isVoiceAutoGainEnabled;
+  bool _isVoiceEchoCancellationEnabled = false;
+  bool get isVoiceEchoCancellationEnabled => _isVoiceEchoCancellationEnabled;
+  bool _isVoiceNoiseSuppressionEnabled = false;
+  bool get isVoiceNoiseSuppressionEnabled => _isVoiceNoiseSuppressionEnabled;
+  double _messageFontScale = 1.0;
+  double get messageFontScale => _messageFontScale;
   bool _autoAddDiscoveredContacts = false;
   bool get autoAddDiscoveredContacts => _autoAddDiscoveredContacts;
+  bool _autoRouteRotationEnabled =
+      MessagingRoutePreferences.defaultAutoRouteRotationEnabled;
+  bool get autoRouteRotationEnabled => _autoRouteRotationEnabled;
+  bool _clearPathOnMaxRetry =
+      MessagingRoutePreferences.defaultClearPathOnMaxRetry;
+  bool get clearPathOnMaxRetry => _clearPathOnMaxRetry;
+  bool _nearestRelayFallbackEnabled =
+      MessagingRoutePreferences.defaultNearestRelayFallbackEnabled;
+  bool get nearestRelayFallbackEnabled => _nearestRelayFallbackEnabled;
+  final PathHistoryService _pathHistoryService = PathHistoryService();
+  final NearestRouterSelector _nearestRouterSelector =
+      const NearestRouterSelector();
+  final Map<String, _DirectMessageRouteSession> _directMessageRouteSessions =
+      {};
 
   static const Duration _packetRetryDelay = Duration(milliseconds: 1200);
   static const Duration _mediaSwarmResponseWindow = Duration(seconds: 10);
@@ -81,6 +134,9 @@ class AppProvider with ChangeNotifier {
   Timer? _packetCaptureFlushTimer;
   String? _lastPersistedPacketSignature;
   bool _isPersistingPacketCapture = false;
+  bool _wasDeviceConnected = false;
+  bool _hasCompletedConnectionBootstrap = false;
+  bool _isReconnectSyncInProgress = false;
 
   AppProvider({
     required this.connectionProvider,
@@ -92,6 +148,9 @@ class AppProvider with ChangeNotifier {
     required this.imageProvider,
   }) {
     _setupCallbacks();
+    connectionProvider.canStartAutomaticMessageSyncCallback =
+        _canStartAutomaticMessageSync;
+    _wasDeviceConnected = connectionProvider.deviceInfo.isConnected;
     _initializeLocationTracking();
     _loadMapEnabled();
     _loadContactsEnabled();
@@ -100,7 +159,13 @@ class AppProvider with ChangeNotifier {
     _loadVoiceBandPassFilterEnabled();
     _loadVoiceCompressorEnabled();
     _loadVoiceLimiterEnabled();
+    _loadVoiceAutoGainEnabled();
+    _loadVoiceEchoCancellationEnabled();
+    _loadVoiceNoiseSuppressionEnabled();
+    _loadMessageFontScale();
     _loadAutoAddDiscoveredContacts();
+    _loadMessagingRouteSettings();
+    unawaited(_pathHistoryService.initialize());
     _startPacketCapturePersistence();
     _syncDrawingsOnStartup(); // Sync drawings immediately after providers load
     _isInitialized = true;
@@ -385,6 +450,96 @@ class AppProvider with ChangeNotifier {
     }
   }
 
+  Future<void> _loadVoiceAutoGainEnabled() async {
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      _isVoiceAutoGainEnabled =
+          prefs.getBool('voice_auto_gain_enabled') ?? false;
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error loading voice auto gain setting: $e');
+    }
+  }
+
+  Future<void> toggleVoiceAutoGainEnabled(bool enabled) async {
+    try {
+      _isVoiceAutoGainEnabled = enabled;
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setBool('voice_auto_gain_enabled', enabled);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error saving voice auto gain setting: $e');
+    }
+  }
+
+  Future<void> _loadVoiceEchoCancellationEnabled() async {
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      _isVoiceEchoCancellationEnabled =
+          prefs.getBool('voice_echo_cancellation_enabled') ?? false;
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error loading voice echo cancellation setting: $e');
+    }
+  }
+
+  Future<void> toggleVoiceEchoCancellationEnabled(bool enabled) async {
+    try {
+      _isVoiceEchoCancellationEnabled = enabled;
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setBool('voice_echo_cancellation_enabled', enabled);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error saving voice echo cancellation setting: $e');
+    }
+  }
+
+  Future<void> _loadVoiceNoiseSuppressionEnabled() async {
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      _isVoiceNoiseSuppressionEnabled =
+          prefs.getBool('voice_noise_suppression_enabled') ?? false;
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error loading voice noise suppression setting: $e');
+    }
+  }
+
+  Future<void> toggleVoiceNoiseSuppressionEnabled(bool enabled) async {
+    try {
+      _isVoiceNoiseSuppressionEnabled = enabled;
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setBool('voice_noise_suppression_enabled', enabled);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error saving voice noise suppression setting: $e');
+    }
+  }
+
+  Future<void> _loadMessageFontScale() async {
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      _messageFontScale = (prefs.getDouble('message_font_scale') ?? 1.0).clamp(
+        0.85,
+        1.4,
+      );
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error loading message font scale setting: $e');
+    }
+  }
+
+  Future<void> setMessageFontScale(double scale) async {
+    try {
+      _messageFontScale = scale.clamp(0.85, 1.4);
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setDouble('message_font_scale', _messageFontScale);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error saving message font scale setting: $e');
+    }
+  }
+
   /// Load auto-add discovered contacts setting from shared preferences.
   Future<void> _loadAutoAddDiscoveredContacts() async {
     try {
@@ -409,6 +564,50 @@ class AppProvider with ChangeNotifier {
     }
   }
 
+  Future<void> _loadMessagingRouteSettings() async {
+    try {
+      _autoRouteRotationEnabled =
+          await MessagingRoutePreferences.getAutoRouteRotationEnabled();
+      _clearPathOnMaxRetry =
+          await MessagingRoutePreferences.getClearPathOnMaxRetry();
+      _nearestRelayFallbackEnabled =
+          await MessagingRoutePreferences.getNearestRelayFallbackEnabled();
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error loading messaging route settings: $e');
+    }
+  }
+
+  Future<void> toggleAutoRouteRotationEnabled(bool enabled) async {
+    try {
+      _autoRouteRotationEnabled = enabled;
+      await MessagingRoutePreferences.setAutoRouteRotationEnabled(enabled);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error saving auto route rotation setting: $e');
+    }
+  }
+
+  Future<void> toggleClearPathOnMaxRetry(bool enabled) async {
+    try {
+      _clearPathOnMaxRetry = enabled;
+      await MessagingRoutePreferences.setClearPathOnMaxRetry(enabled);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error saving clear path on max retry setting: $e');
+    }
+  }
+
+  Future<void> toggleNearestRelayFallbackEnabled(bool enabled) async {
+    try {
+      _nearestRelayFallbackEnabled = enabled;
+      await MessagingRoutePreferences.setNearestRelayFallbackEnabled(enabled);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error saving nearest relay fallback setting: $e');
+    }
+  }
+
   /// Initialize location tracking service
   Future<void> _initializeLocationTracking() async {
     try {
@@ -452,8 +651,20 @@ class AppProvider with ChangeNotifier {
     connectionProvider.addListener(_handleConnectionStateChange);
     messagesProvider.resolveContactNameCallback =
         _resolveContactNameForNotification;
-    messagesProvider.resolveChannelNameCallback =
-        channelsProvider.getChannelDisplayName;
+    messagesProvider.resolveChannelNameCallback = (channelIdx) {
+      if (channelIdx == 0) {
+        return 'Public';
+      }
+
+      for (final channel in contactsProvider.channels) {
+        if (channel.publicKey.length > 1 &&
+            channel.publicKey[1] == channelIdx) {
+          return channel.displayName;
+        }
+      }
+
+      return channelsProvider.getChannelDisplayName(channelIdx);
+    };
 
     voiceProvider.sendRawPacketCallback =
         ({
@@ -488,6 +699,7 @@ class AppProvider with ChangeNotifier {
         contact,
         devicePublicKey: connectionProvider.deviceInfo.publicKey,
       );
+      unawaited(_pathHistoryService.recordLearnedPath(contact));
 
       // Broadcast to SSE clients if server is running
       connectionProvider.broadcastContactToSseClients(contact);
@@ -500,6 +712,9 @@ class AppProvider with ChangeNotifier {
         contacts,
         devicePublicKey: connectionProvider.deviceInfo.publicKey,
       );
+      for (final contact in contacts) {
+        unawaited(_pathHistoryService.recordLearnedPath(contact));
+      }
       debugPrint('Received ${contacts.length} contacts');
 
       // Broadcast all contacts to SSE clients if server is running
@@ -634,6 +849,18 @@ class AppProvider with ChangeNotifier {
       final receptionDetailsSnapshot = _buildReceptionDetailsSnapshot(
         enrichedMessage,
       );
+      final receivedPathBytes = receptionDetailsSnapshot?.pathBytes;
+      if (senderContact != null &&
+          enrichedMessage.isChannelMessage &&
+          receivedPathBytes != null &&
+          receivedPathBytes.isNotEmpty) {
+        unawaited(
+          _learnPathFromPublicMessage(
+            contact: senderContact,
+            pathBytes: receivedPathBytes,
+          ),
+        );
+      }
 
       // Check if message is a drawing broadcast
       if (DrawingMessageParser.isDrawingMessage(enrichedMessage.text)) {
@@ -1029,6 +1256,7 @@ class AppProvider with ChangeNotifier {
       debugPrint(
         '📡 [AppProvider] Advertisement received: ${publicKey.sublist(0, 6).map((b) => b.toRadixString(16).padLeft(2, '0')).join(':')}...',
       );
+      unawaited(_retainAdvertRxPath(publicKey));
       // Check if this is an existing contact that might have updated location
       final contact = contactsProvider.findContactByKey(publicKey);
       if (contact != null) {
@@ -1117,6 +1345,14 @@ class AppProvider with ChangeNotifier {
       messagesProvider.handleMessageEcho(messageId, echoCount, snrRaw, rssiDbm);
     };
 
+    connectionProvider.prepareDirectMessageSendCallback =
+        ({required messageId, required contact, required retryAttempt}) async {
+          return _prepareDirectMessageSend(
+            messageId: messageId,
+            contact: contact,
+          );
+        };
+
     // Wire up MessagesProvider's sendMessageCallback for retry logic
     messagesProvider.sendMessageCallback =
         ({
@@ -1134,32 +1370,348 @@ class AppProvider with ChangeNotifier {
             retryAttempt: retryAttempt,
           );
         };
-
-    messagesProvider.onDirectPathFailedCallback =
-        ({required contact, required failureStreak}) async {
-          debugPrint(
-            '🧭 [AppProvider] Clearing unhealthy path for ${contact.advName} after $failureStreak failed send chain(s)',
+    connectionProvider.resolveContactForDmCallback = (contactPublicKey) {
+      return contactsProvider.findContactByKey(contactPublicKey);
+    };
+    messagesProvider.onFinalRouterFallbackCallback =
+        ({required messageId, required contact, required message}) async {
+          return _sendWithFinalNearestRouterFallback(
+            messageId: messageId,
+            contact: contact,
+            message: message,
           );
-
-          contactsProvider.markPathUnhealthy(contact.publicKey);
-
-          if (!connectionProvider.deviceInfo.isConnected) {
-            return;
-          }
-
-          try {
-            await connectionProvider.resetPath(contact.publicKey);
-            Future.delayed(const Duration(milliseconds: 150), () {
-              if (connectionProvider.deviceInfo.isConnected) {
-                connectionProvider.getContact(contact.publicKey);
-              }
-            });
-          } catch (e) {
-            debugPrint(
-              '⚠️ [AppProvider] Failed to reset path for ${contact.advName}: $e',
-            );
-          }
         };
+    messagesProvider.onFinalDirectMessageFailureCallback =
+        ({required messageId, required contact, required message}) async {
+          await _handleDirectMessageFinalFailure(
+            messageId: messageId,
+            contact: contact,
+          );
+        };
+    messagesProvider.onDirectMessageDeliveredCallback =
+        ({
+          required messageId,
+          required contact,
+          required message,
+          required roundTripTimeMs,
+        }) {
+          _handleDirectMessageDelivered(
+            messageId: messageId,
+            contact: contact,
+            roundTripTimeMs: roundTripTimeMs,
+          );
+        };
+    messagesProvider.onManualRetryPreparedCallback = (messageId) {
+      _directMessageRouteSessions.remove(messageId);
+    };
+  }
+
+  Future<Contact> _prepareDirectMessageSend({
+    required String messageId,
+    required Contact contact,
+  }) async {
+    final latestContact =
+        contactsProvider.findContactByKey(contact.publicKey) ?? contact;
+    var session = _directMessageRouteSessions[messageId];
+    if (session == null) {
+      final selection = await _pathHistoryService.getSelectionForContact(
+        latestContact,
+        autoRouteRotationEnabled: _autoRouteRotationEnabled,
+      );
+      session = _DirectMessageRouteSession(
+        currentSelection: selection,
+        originalRoute: ContactRouteCodec.fromContact(latestContact),
+        routerFallbackAttempted: false,
+      );
+      _directMessageRouteSessions[messageId] = session;
+    }
+
+    await _applyPathSelection(
+      latestContact,
+      session.currentSelection,
+      messageId: messageId,
+      routerFallbackAttempted: session.routerFallbackAttempted,
+    );
+    return contactsProvider.findContactByKey(contact.publicKey) ??
+        latestContact;
+  }
+
+  Future<void> _applyPathSelection(
+    Contact contact,
+    PathSelection selection, {
+    required String messageId,
+    required bool routerFallbackAttempted,
+  }) async {
+    final previousRoute = ContactRouteCodec.fromContact(contact);
+
+    try {
+      if (selection.usesFlood) {
+        contactsProvider.resetContactRouteLocal(contact.publicKey);
+        if (connectionProvider.deviceInfo.isConnected) {
+          await connectionProvider.resetPath(contact.publicKey);
+        }
+      } else {
+        final pathDescriptor =
+            ((selection.hashSize - 1) << 6) | (selection.hopCount & 0x3F);
+        final signedDescriptor = ContactRouteCodec.toSignedDescriptor(
+          pathDescriptor,
+        );
+        final paddedPathBytes = Uint8List(ContactRouteCodec.maxPathBytes)
+          ..setRange(0, selection.pathBytes.length, selection.pathBytes);
+
+        contactsProvider.setContactRouteLocal(
+          contact.publicKey,
+          signedEncodedPathLen: signedDescriptor,
+          paddedPathBytes: paddedPathBytes,
+        );
+        if (connectionProvider.deviceInfo.isConnected) {
+          await connectionProvider.setContactRoute(
+            contact,
+            signedEncodedPathLen: signedDescriptor,
+            paddedPathBytes: paddedPathBytes,
+          );
+        }
+      }
+    } catch (error) {
+      _restoreRouteLocal(contact.publicKey, previousRoute);
+      rethrow;
+    }
+
+    messagesProvider.updateMessageRouteSelection(
+      messageId,
+      selection,
+      routerFallbackAttempted: routerFallbackAttempted,
+    );
+  }
+
+  void _restoreRouteLocal(Uint8List publicKey, ParsedContactRoute? route) {
+    if (route == null) {
+      contactsProvider.resetContactRouteLocal(publicKey);
+      return;
+    }
+
+    contactsProvider.setContactRouteLocal(
+      publicKey,
+      signedEncodedPathLen: route.signedEncodedPathLen,
+      paddedPathBytes: route.paddedPathBytes,
+    );
+  }
+
+  Future<void> _restoreRouteOnDevice(
+    Contact contact,
+    ParsedContactRoute? route,
+  ) async {
+    _restoreRouteLocal(contact.publicKey, route);
+    if (!connectionProvider.deviceInfo.isConnected) {
+      return;
+    }
+
+    if (route == null) {
+      await connectionProvider.resetPath(contact.publicKey);
+      return;
+    }
+
+    await connectionProvider.setContactRoute(
+      contact,
+      signedEncodedPathLen: route.signedEncodedPathLen,
+      paddedPathBytes: route.paddedPathBytes,
+    );
+  }
+
+  PathSelection _buildNearestRouterSelection(Contact repeater, int hashSize) {
+    return PathSelection(
+      mode: PathSelectionMode.nearestRouter,
+      pathBytes: Uint8List.fromList(repeater.publicKey.sublist(0, hashSize)),
+      hopCount: 1,
+      hashSize: hashSize,
+      relayName: repeater.advName,
+      relayKey6: _key6(repeater.publicKey),
+    );
+  }
+
+  Future<bool> _sendWithFinalNearestRouterFallback({
+    required String messageId,
+    required Contact contact,
+    required Message message,
+  }) async {
+    if (!_nearestRelayFallbackEnabled) {
+      return false;
+    }
+
+    final latestContact =
+        contactsProvider.findContactByKey(contact.publicKey) ?? contact;
+    final session =
+        _directMessageRouteSessions[messageId] ??
+        _DirectMessageRouteSession(
+          currentSelection: latestContact.routeHasPath
+              ? PathSelection(
+                  mode: PathSelectionMode.directCurrent,
+                  pathBytes: Uint8List.fromList(latestContact.routePathBytes),
+                  hopCount: latestContact.routeHopCount,
+                  hashSize: latestContact.routeHashSize,
+                )
+              : PathSelection.flood(),
+          originalRoute: ContactRouteCodec.fromContact(latestContact),
+          routerFallbackAttempted: false,
+        );
+
+    await _pathHistoryService.recordPathResult(
+      latestContact.publicKeyHex,
+      session.currentSelection,
+      success: false,
+    );
+
+    final repeater = _nearestRouterSelector.select(
+      senderPosition: locationTrackingService.currentPosition,
+      repeaters: contactsProvider.repeaters,
+      recipient: latestContact,
+    );
+    if (repeater == null) {
+      return false;
+    }
+
+    final routeHashSize = await RouteHashPreferences.getHashSize();
+    final fallbackSelection = _buildNearestRouterSelection(
+      repeater,
+      routeHashSize,
+    );
+    _directMessageRouteSessions[messageId] = session.copyWith(
+      currentSelection: fallbackSelection,
+      routerFallbackAttempted: true,
+    );
+    messagesProvider.updateMessageRouteSelection(
+      messageId,
+      fallbackSelection,
+      routerFallbackAttempted: true,
+    );
+
+    return connectionProvider.sendTextMessage(
+      contactPublicKey: latestContact.publicKey,
+      text: message.text,
+      messageId: messageId,
+      contact: latestContact,
+      retryAttempt: message.retryAttempt + 1,
+    );
+  }
+
+  void _handleDirectMessageDelivered({
+    required String messageId,
+    required Contact contact,
+    required int roundTripTimeMs,
+  }) {
+    final session = _directMessageRouteSessions.remove(messageId);
+    if (session == null) {
+      return;
+    }
+
+    unawaited(
+      _pathHistoryService.recordPathResult(
+        contact.publicKeyHex,
+        session.currentSelection,
+        success: true,
+        roundTripTimeMs: roundTripTimeMs,
+      ),
+    );
+  }
+
+  Future<void> _handleDirectMessageFinalFailure({
+    required String messageId,
+    required Contact contact,
+  }) async {
+    final latestContact =
+        contactsProvider.findContactByKey(contact.publicKey) ?? contact;
+    final session = _directMessageRouteSessions.remove(messageId);
+    if (session != null) {
+      await _pathHistoryService.recordPathResult(
+        latestContact.publicKeyHex,
+        session.currentSelection,
+        success: false,
+      );
+      if (session.routerFallbackAttempted) {
+        await _restoreRouteOnDevice(latestContact, session.originalRoute);
+      }
+    }
+
+    if (_clearPathOnMaxRetry) {
+      contactsProvider.resetContactRouteLocal(latestContact.publicKey);
+      if (connectionProvider.deviceInfo.isConnected) {
+        await connectionProvider.resetPath(latestContact.publicKey);
+        Future.delayed(const Duration(milliseconds: 150), () {
+          if (connectionProvider.deviceInfo.isConnected) {
+            connectionProvider.getContact(latestContact.publicKey);
+          }
+        });
+      }
+    }
+  }
+
+  String _key6(Uint8List publicKey) {
+    final bytes = publicKey.sublist(0, math.min(6, publicKey.length));
+    return bytes.map((byte) => byte.toRadixString(16).padLeft(2, '0')).join();
+  }
+
+  Future<void> _learnPathFromPublicMessage({
+    required Contact contact,
+    required List<int> pathBytes,
+  }) async {
+    final preferred = await RouteHashPreferences.getHashSize();
+    final inferredHashSize = _inferReceivedPathHashSize(
+      pathBytes,
+      preferredHashSize: preferred,
+    );
+    await _pathHistoryService.recordReceivedBytePath(
+      contact.publicKeyHex,
+      pathBytes,
+      inferredHashSize,
+    );
+  }
+
+  Future<void> _retainAdvertRxPath(Uint8List publicKey) async {
+    final decoded = _findBestMatchingAdvertRxRoute(publicKey);
+    if (decoded == null || decoded.pathBytes.isEmpty) {
+      return;
+    }
+
+    final reversedPathBytes = LogRxRouteDecoder.reverseHopBytes(
+      decoded.pathBytes,
+      hashSize: decoded.hashSize,
+    );
+    final reversedHopHashes = LogRxRouteDecoder.splitHopHashes(
+      reversedPathBytes,
+      hashSize: decoded.hashSize,
+    );
+
+    final parsedRoute = ContactRouteCodec.parse(
+      reversedHopHashes.join(','),
+      expectedHashSize: decoded.hashSize,
+    );
+    contactsProvider.retainReceivedRoute(
+      publicKey,
+      signedEncodedPathLen: parsedRoute.signedEncodedPathLen,
+      paddedPathBytes: parsedRoute.paddedPathBytes,
+      devicePublicKey: connectionProvider.deviceInfo.publicKey,
+    );
+    await _pathHistoryService.recordReceivedBytePath(
+      publicKey.map((byte) => byte.toRadixString(16).padLeft(2, '0')).join(),
+      decoded.pathBytes,
+      decoded.hashSize,
+    );
+  }
+
+  int _inferReceivedPathHashSize(
+    List<int> pathBytes, {
+    required int preferredHashSize,
+  }) {
+    final preferred = preferredHashSize;
+    final candidates = {preferred, 3, 2, 1}.toList();
+    for (final candidate in candidates) {
+      if (candidate >= 1 &&
+          candidate <= 3 &&
+          pathBytes.length % candidate == 0) {
+        return candidate;
+      }
+    }
+    return 1;
   }
 
   /// Initialize the app (load contacts, sync time, etc.)
@@ -1167,6 +1719,8 @@ class AppProvider with ChangeNotifier {
     if (!connectionProvider.deviceInfo.isConnected) return;
 
     try {
+      _isReconnectSyncInProgress = true;
+      _hasCompletedConnectionBootstrap = false;
       // Initialize contacts provider with device public key to exclude self
       // If already initialized (from early load), this will just filter out self-contact
       // This must happen before getContacts to ensure proper filtering
@@ -1218,7 +1772,9 @@ class AppProvider with ChangeNotifier {
       debugPrint(
         '🔄 [AppProvider] Performing initial message sync (fallback for missed pushes)',
       );
-      final initialMessageCount = await connectionProvider.syncAllMessages();
+      final initialMessageCount = await connectionProvider.syncAllMessages(
+        force: true,
+      );
       debugPrint(
         '📥 [AppProvider] Initial sync retrieved $initialMessageCount message(s)',
       );
@@ -1238,9 +1794,51 @@ class AppProvider with ChangeNotifier {
       );
       messagesProvider.syncDrawingsWithProvider(drawingProvider);
 
+      _hasCompletedConnectionBootstrap = true;
+      _wasDeviceConnected = connectionProvider.deviceInfo.isConnected;
+      await _flushDeferredAutomaticMessageSync();
       notifyListeners();
     } catch (e) {
       debugPrint('Initialization error: $e');
+    } finally {
+      _isReconnectSyncInProgress = false;
+    }
+  }
+
+  Future<void> _syncAfterReconnect({bool started = false}) async {
+    if (!connectionProvider.deviceInfo.isConnected) {
+      return;
+    }
+
+    if (!started) {
+      if (_isReconnectSyncInProgress) {
+        return;
+      }
+      _isReconnectSyncInProgress = true;
+    }
+    try {
+      debugPrint(
+        '🔄 [AppProvider] Device reconnected - syncing contacts and missed messages',
+      );
+
+      await contactsProvider.initialize(
+        devicePublicKey: connectionProvider.deviceInfo.publicKey,
+      );
+      await connectionProvider.getContacts();
+
+      final messageCount = await connectionProvider.syncAllMessages(
+        force: true,
+      );
+      debugPrint(
+        '📥 [AppProvider] Reconnect sync retrieved $messageCount message(s)',
+      );
+    } catch (e) {
+      debugPrint('❌ [AppProvider] Reconnect sync error: $e');
+    } finally {
+      _hasCompletedConnectionBootstrap =
+          connectionProvider.deviceInfo.isConnected;
+      _isReconnectSyncInProgress = false;
+      await _flushDeferredAutomaticMessageSync();
     }
   }
 
@@ -1553,14 +2151,13 @@ class AppProvider with ChangeNotifier {
     if (requester == null ||
         !requester.routeHasPath ||
         requester.routeHopCount > _maxDirectPayloadHops ||
-        !requester.routeSupportsLegacyRawTransport ||
         requester.outPath.isEmpty) {
       return;
     }
     unawaited(
       connectionProvider.sendRawVoicePacket(
         contactPath: requester.outPath,
-        contactPathLen: requester.routeSignedPathLen,
+        contactPathLen: requester.routeEncodedPathLen,
         payload: availability.encodeBinary(),
       ),
     );
@@ -1630,7 +2227,7 @@ class AppProvider with ChangeNotifier {
         for (final peer in peers) {
           await connectionProvider.sendRawVoicePacket(
             contactPath: peer.outPath,
-            contactPathLen: peer.routeSignedPathLen,
+            contactPathLen: peer.routeEncodedPathLen,
             payload: request.encodeBinary(),
           );
         }
@@ -1653,7 +2250,6 @@ class AppProvider with ChangeNotifier {
           if (responder == null ||
               !responder.routeHasPath ||
               responder.routeHopCount > _maxDirectPayloadHops ||
-              !responder.routeSupportsLegacyRawTransport ||
               responder.outPath.isEmpty) {
             continue;
           }
@@ -1745,7 +2341,7 @@ class AppProvider with ChangeNotifier {
 
       await connectionProvider.sendRawVoicePacket(
         contactPath: target.outPath,
-        contactPathLen: target.routeSignedPathLen,
+        contactPathLen: target.routeEncodedPathLen,
         payload: payload,
       );
       return true;
@@ -1986,9 +2582,6 @@ class AppProvider with ChangeNotifier {
     if (!target.routeHasPath || target.routeHopCount > _maxDirectPayloadHops) {
       return false;
     }
-    if (!target.routeSupportsLegacyRawTransport) {
-      return false;
-    }
     if (target.outPath.isEmpty) {
       return false;
     }
@@ -2021,7 +2614,7 @@ class AppProvider with ChangeNotifier {
         );
         await connectionProvider.sendRawVoicePacket(
           contactPath: target.outPath,
-          contactPathLen: target.routeSignedPathLen,
+          contactPathLen: target.routeEncodedPathLen,
           payload: RawRouteProbeRequest(
             nonce: nonce,
             requesterKey6: requesterKey6,
@@ -2049,7 +2642,7 @@ class AppProvider with ChangeNotifier {
     if (target.publicKeyHex.isNotEmpty) {
       return 'pk:${target.publicKeyHex}';
     }
-    return 'name:${target.advName}:${target.routeSignedPathLen}:${target.outPath.map((b) => b.toRadixString(16).padLeft(2, '0')).join()}';
+    return 'name:${target.advName}:${target.routeEncodedPathLen}:${target.outPath.map((b) => b.toRadixString(16).padLeft(2, '0')).join()}';
   }
 
   void _handleRawRouteProbeRequest(RawRouteProbeRequest request) {
@@ -2067,9 +2660,6 @@ class AppProvider with ChangeNotifier {
       );
       return;
     }
-    if (!requester.routeSupportsLegacyRawTransport) {
-      return;
-    }
     if (requester.outPath.isEmpty) {
       return;
     }
@@ -2079,7 +2669,7 @@ class AppProvider with ChangeNotifier {
     unawaited(
       connectionProvider.sendRawVoicePacket(
         contactPath: requester.outPath,
-        contactPathLen: requester.routeSignedPathLen,
+        contactPathLen: requester.routeEncodedPathLen,
         payload: RawRouteProbeAck(nonce: request.nonce).encodeBinary(),
       ),
     );
@@ -2153,12 +2743,10 @@ class AppProvider with ChangeNotifier {
       if (log.responseCode != 0x88) continue;
       if (log.rawData.length < 6) continue;
 
-      final raw = log.rawData;
-      final payloadType = (raw[3] >> 2) & 0x0F;
-      final pathLen = raw[4];
-      if (payloadType != expectedPayloadType) continue;
-      if (pathLen != message.pathLen) continue;
-      if (raw.length < 5 + pathLen) continue;
+      final decoded = LogRxRouteDecoder.decode(log.rawData);
+      if (decoded == null) continue;
+      if (decoded.payloadType != expectedPayloadType) continue;
+      if (decoded.hopCount != message.pathLen) continue;
 
       final deltaMs =
           (log.timestamp.difference(message.receivedAt).inMilliseconds).abs();
@@ -2172,13 +2760,42 @@ class AppProvider with ChangeNotifier {
     return bestLog;
   }
 
+  DecodedLogRxRoute? _findBestMatchingAdvertRxRoute(Uint8List publicKey) {
+    final publicKeyHex = publicKey
+        .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
+        .join()
+        .toLowerCase();
+
+    DecodedLogRxRoute? bestRoute;
+    var bestDeltaMs = 999999999;
+    final now = DateTime.now();
+
+    for (final log in connectionProvider.bleService.packetLogs) {
+      if (log.responseCode != 0x88) continue;
+      if (log.rawData.length < 6) continue;
+
+      final decoded = LogRxRouteDecoder.decode(log.rawData);
+      if (decoded == null) continue;
+      if (decoded.payloadType != 0x04) continue;
+      final senderHash = decoded.originalSenderHashHex;
+      if (senderHash == null || !publicKeyHex.startsWith(senderHash)) continue;
+
+      final deltaMs = (log.timestamp.difference(now).inMilliseconds).abs();
+      if (deltaMs < bestDeltaMs) {
+        bestDeltaMs = deltaMs;
+        bestRoute = decoded;
+      }
+    }
+
+    if (bestDeltaMs > 30000) return null;
+    return bestRoute;
+  }
+
   List<int>? _extractPathBytesFromLog(BlePacketLog? log) {
     if (log == null) return null;
-    final raw = log.rawData;
-    if (raw.length < 6) return null;
-    final pathLen = raw[4];
-    if (pathLen <= 0 || raw.length < 5 + pathLen) return null;
-    return raw.sublist(5, 5 + pathLen);
+    final decoded = LogRxRouteDecoder.decode(log.rawData);
+    if (decoded == null || decoded.pathBytes.isEmpty) return null;
+    return decoded.pathBytes;
   }
 
   // Removed _syncMessages() - messages are automatically synced via PUSH_CODE_MSG_WAITING events
@@ -2213,7 +2830,9 @@ class AppProvider with ChangeNotifier {
       debugPrint(
         '🔄 [AppProvider] Manual message sync requested (user initiated)',
       );
-      final messageCount = await connectionProvider.syncAllMessages();
+      final messageCount = await connectionProvider.syncAllMessages(
+        force: true,
+      );
       debugPrint(
         '✅ [AppProvider] Manual sync completed: $messageCount messages',
       );
@@ -2228,6 +2847,8 @@ class AppProvider with ChangeNotifier {
   /// Handle connection state changes to manage location tracking
   void _handleConnectionStateChange() {
     final isConnected = connectionProvider.deviceInfo.isConnected;
+    final wasConnected = _wasDeviceConnected;
+    _wasDeviceConnected = isConnected;
     final wasTracking = locationTrackingService.isTracking;
 
     // Only stop tracking on disconnect - DON'T start on connect
@@ -2239,6 +2860,33 @@ class AppProvider with ChangeNotifier {
       );
       _stopLocationTracking();
     }
+
+    if (!isConnected) {
+      connectionProvider.clearPendingAutomaticMessageSync();
+    }
+
+    if (isConnected && !wasConnected && _hasCompletedConnectionBootstrap) {
+      _isReconnectSyncInProgress = true;
+      unawaited(_syncAfterReconnect(started: true));
+    }
+  }
+
+  bool _canStartAutomaticMessageSync() {
+    return connectionProvider.deviceInfo.isConnected &&
+        _hasCompletedConnectionBootstrap &&
+        !_isReconnectSyncInProgress;
+  }
+
+  Future<void> _flushDeferredAutomaticMessageSync() async {
+    if (!connectionProvider.hasPendingAutomaticMessageSync ||
+        !_canStartAutomaticMessageSync()) {
+      return;
+    }
+
+    debugPrint(
+      '🔄 [AppProvider] Running deferred automatic message sync after bootstrap',
+    );
+    await connectionProvider.syncAllMessages(force: true);
   }
 
   /// Start location tracking

lib/providers/connection_provider.dart

@@ -175,13 +175,22 @@ class ConnectionProvider with ChangeNotifier {
   Function(String messageId, int expectedAckTag, int suggestedTimeoutMs)?
   onMessageSent;
   Function(int ackCode, int roundTripTimeMs)? onMessageDelivered;
+  Future<Contact?> Function({
+    required String messageId,
+    required Contact contact,
+    required int retryAttempt,
+  })?
+  prepareDirectMessageSendCallback;
   Function(String messageId, int echoCount, int snrRaw, int rssiDbm)?
   onMessageEchoDetected;
   Function(Uint8List publicKeyPrefix, Uint8List statusData)? onStatusResponse;
   Function(Uint8List payload, int snrRaw, int rssiDbm)? onRawDataReceived;
+  Contact? Function(Uint8List contactPublicKey)? resolveContactForDmCallback;
+  bool Function()? canStartAutomaticMessageSyncCallback;
 
   // Track pending send operations for auto-recovery
   final Map<String, _PendingSendOperation> _pendingSendOperations = {};
+  bool _pendingAutomaticMessageSync = false;
 
   ConnectionProvider() {
     _wireServiceCallbacks(_bleService);
@@ -326,6 +335,13 @@ class ConnectionProvider with ChangeNotifier {
         debugPrint('📥 [Provider] MSG_WAITING ignored during spectrum scan');
         return;
       }
+      if (!(canStartAutomaticMessageSyncCallback?.call() ?? true)) {
+        _pendingAutomaticMessageSync = true;
+        debugPrint(
+          '📥 [Provider] MSG_WAITING deferred until connection bootstrap completes',
+        );
+        return;
+      }
       debugPrint('📥 [Provider] MSG_WAITING - auto-syncing');
       if (_isSyncingMessages) {
         _syncRequestedWhileBusy = true;
@@ -480,6 +496,14 @@ class ConnectionProvider with ChangeNotifier {
   /// Start scanning for MeshCore devices
   Future<void> startScan() async {
     debugPrint('🔍 [Provider] startScan() called');
+    if (_deviceInfo.connectionState == ConnectionState.connecting ||
+        _deviceInfo.connectionState == ConnectionState.connected) {
+      debugPrint(
+        '⏭️ [Provider] Ignoring scan request while connection is active: ${_deviceInfo.connectionState}',
+      );
+      return;
+    }
+
     _isScanning = true;
     _scannedDevices.clear();
     _error = null;
@@ -553,6 +577,11 @@ class ConnectionProvider with ChangeNotifier {
       '🔵 [Provider] connect() called for device: ${device.platformName}',
     );
 
+    if (_isScanning) {
+      debugPrint('🔵 [Provider] Stopping active scan before connect()');
+      await stopScan();
+    }
+
     _deviceInfo = _deviceInfo.copyWith(
       deviceId: device.remoteId.toString(),
       deviceName: device.platformName.isNotEmpty
@@ -829,10 +858,26 @@ class ConnectionProvider with ChangeNotifier {
       return true;
     } catch (e) {
       debugPrint('❌ [Provider] Failed to check slot $channelIdx: $e');
+      if (_isEmptyChannelQueryError(e)) {
+        debugPrint(
+          '   ℹ️  Treating slot $channelIdx as empty because the device reported it was not found',
+        );
+        return true;
+      }
       return false;
     }
   }
 
+  bool _isEmptyChannelQueryError(Object error) {
+    final message = error.toString().toLowerCase();
+    return message.contains('not found');
+  }
+
+  bool _isChannelRefreshTimeoutError(Object error) {
+    final message = error.toString().toLowerCase();
+    return message.contains('0x1f') && message.contains('timed out');
+  }
+
   Future<int?> findNextEmptyChannelSlot() async {
     if (!_activeService.isConnected) {
       throw Exception('Not connected to device');
@@ -843,6 +888,35 @@ class ConnectionProvider with ChangeNotifier {
 
       // maxChannels from device info, or default to 40
       final maxChannels = _deviceInfo.maxChannels ?? 40;
+      final maxCustomChannels = maxChannels > 0 ? maxChannels - 1 : 0;
+
+      // Match meshcore-open: trust the current synced channel list first and
+      // pick the first missing slot rather than probing every slot on-device.
+      if (getChannelInfo != null) {
+        final usedIndices = <int>{};
+        for (int i = 1; i < maxChannels; i++) {
+          final channel = getChannelInfo!(i);
+          if (channel == null) {
+            continue;
+          }
+
+          final channelName = (channel as dynamic).name as String?;
+          if (channelName != null && channelName.isNotEmpty) {
+            usedIndices.add(i);
+          }
+        }
+
+        for (int i = 1; i < maxChannels; i++) {
+          if (!usedIndices.contains(i)) {
+            debugPrint('   ✅ Found empty slot from synced channels: $i');
+            return i;
+          }
+        }
+
+        debugPrint(
+          '   ⚠️  Synced channels report all custom slots occupied ($maxCustomChannels total)',
+        );
+      }
 
       // Check each slot starting from 1 (skip 0 = public channel)
       for (int i = 1; i < maxChannels; i++) {
@@ -939,10 +1013,12 @@ class ConnectionProvider with ChangeNotifier {
         debugPrint('  Using existing slot: $slotIdx (overwrite mode)');
       } else {
         // Find next empty slot for new channel
+        final maxChannels = _deviceInfo.maxChannels ?? 40;
+        final maxCustomChannels = maxChannels > 0 ? maxChannels - 1 : 0;
         final emptySlot = await findNextEmptyChannelSlot();
         if (emptySlot == null) {
           throw Exception(
-            'All channel slots are in use (maximum 39 custom channels)',
+            'All channel slots are in use (maximum $maxCustomChannels custom channels)',
           );
         }
         slotIdx = emptySlot;
@@ -963,23 +1039,33 @@ class ConnectionProvider with ChangeNotifier {
         debugPrint('  Secret converted to 16-byte key using MD5');
       }
 
-      // Send CMD_SET_CHANNEL to radio
-      await _activeService.setChannel(
-        channelIdx: slotIdx,
-        channelName: channelName,
-        secret: secretBytes,
-      );
+      // Send CMD_SET_CHANNEL to radio. Some devices accept the write but do not
+      // reliably answer the follow-up CMD_GET_CHANNEL verification (0x1F).
+      try {
+        await _activeService.setChannel(
+          channelIdx: slotIdx,
+          channelName: channelName,
+          secret: secretBytes,
+        );
+      } catch (e) {
+        if (_isChannelRefreshTimeoutError(e)) {
+          debugPrint(
+            '⚠️ [Provider] CMD_GET_CHANNEL verification timed out after SET_CHANNEL; assuming the channel write succeeded',
+          );
+          onChannelInfoReceived?.call(
+            slotIdx,
+            channelName,
+            Uint8List.fromList(secretBytes),
+            null,
+          );
+        } else {
+          rethrow;
+        }
+      }
 
       debugPrint(
         '✅ [Provider] Channel ${existingSlot != null ? 'updated' : 'created'} successfully in slot $slotIdx',
       );
-
-      // Small delay to allow the response to propagate
-      await Future.delayed(const Duration(milliseconds: 100));
-
-      // Refresh channels to update UI
-      // The channel info will be received via onChannelInfoReceived callback
-      await _activeService.getChannel(slotIdx);
     } catch (e) {
       _error = 'Failed to create channel: $e';
       debugPrint('❌ [Provider] Channel creation failed: $e');
@@ -1073,7 +1159,7 @@ class ConnectionProvider with ChangeNotifier {
   ///
   /// [messageId] - optional message ID to track delivery status
   /// [contact] - optional contact object for path status logging
-  /// [retryAttempt] - retry attempt number (0 = first send, 1-3 = retries)
+  /// [retryAttempt] - retry attempt number (0 = first send, >0 = retries)
   Future<bool> sendTextMessage({
     required Uint8List contactPublicKey,
     required String text,
@@ -1087,6 +1173,18 @@ class ConnectionProvider with ChangeNotifier {
       return false;
     }
 
+    var effectiveContact = contact;
+    effectiveContact ??= resolveContactForDmCallback?.call(contactPublicKey);
+    if (messageId != null &&
+        effectiveContact != null &&
+        prepareDirectMessageSendCallback != null) {
+      effectiveContact = await prepareDirectMessageSendCallback!(
+        messageId: messageId,
+        contact: effectiveContact,
+        retryAttempt: retryAttempt,
+      );
+    }
+
     // CRITICAL: Check firmware ACK limit (8 max in circular buffer)
     // Rate limit at 7 to stay under the limit
     if (_messageDeliveryTracker.shouldRateLimit) {
@@ -1111,33 +1209,33 @@ class ConnectionProvider with ChangeNotifier {
 
     try {
       // Log path status and retry info
-      if (contact != null) {
+      if (effectiveContact != null) {
         if (retryAttempt > 0) {
           debugPrint(
-            '🔄 [ConnectionProvider] Sending message to ${contact.advName} (retry $retryAttempt/3)',
+            '🔄 [ConnectionProvider] Sending message to ${effectiveContact.advName} (retry $retryAttempt)',
           );
         } else {
           debugPrint(
-            '📤 [ConnectionProvider] Sending message to ${contact.advName}',
+            '📤 [ConnectionProvider] Sending message to ${effectiveContact.advName}',
           );
         }
-        debugPrint('   Type: ${contact.type.displayName}');
-        debugPrint('   Path status: ${contact.routeSummary}');
-        if (contact.routeHasPath) {
+        debugPrint('   Type: ${effectiveContact.type.displayName}');
+        debugPrint('   Path status: ${effectiveContact.routeSummary}');
+        if (effectiveContact.routeHasPath) {
           debugPrint(
-            '   ✅ Using learned path (${contact.routeHopCount} hop(s), ${contact.routeHashSize}-byte hashes)',
+            '   ✅ Using learned path (${effectiveContact.routeHopCount} hop(s), ${effectiveContact.routeHashSize}-byte hashes)',
           );
         } else {
           debugPrint('   ⚠️ No path available - will use flood mode');
         }
       } else if (retryAttempt > 0) {
         debugPrint(
-          '🔄 [ConnectionProvider] Sending message (retry $retryAttempt/3)',
+          '🔄 [ConnectionProvider] Sending message (retry $retryAttempt)',
         );
       }
 
       // Track pending operation for auto-recovery (if contact not found in radio)
-      if (contact != null) {
+      if (effectiveContact != null) {
         final operationId = contactPublicKey
             .sublist(0, 6)
             .map((b) => b.toRadixString(16).padLeft(2, '0'))
@@ -1146,7 +1244,7 @@ class ConnectionProvider with ChangeNotifier {
           contactPublicKey: contactPublicKey,
           text: text,
           messageId: messageId,
-          contact: contact,
+          contact: effectiveContact,
           retryAttempt: retryAttempt,
         );
         debugPrint(
@@ -1191,7 +1289,7 @@ class ConnectionProvider with ChangeNotifier {
 
       // Clear pending operation after successful send (no error)
       // If ERR_CODE_NOT_FOUND occurs, the operation will be recovered automatically
-      if (contact != null) {
+      if (effectiveContact != null) {
         final operationId = contactPublicKey
             .sublist(0, 6)
             .map((b) => b.toRadixString(16).padLeft(2, '0'))
@@ -1805,11 +1903,18 @@ class ConnectionProvider with ChangeNotifier {
   }
 
   /// Sync all waiting messages from device
-  Future<int> syncAllMessages() async {
+  Future<int> syncAllMessages({bool force = false}) async {
     if (_isSpectrumScanActive) {
       debugPrint('⏸️ [Provider] Message sync skipped during spectrum scan');
       return 0;
     }
+    if (!force && !(canStartAutomaticMessageSyncCallback?.call() ?? true)) {
+      _pendingAutomaticMessageSync = true;
+      debugPrint(
+        '⏸️ [Provider] Message sync deferred until connection bootstrap completes',
+      );
+      return 0;
+    }
     if (_isSyncingMessages) {
       // Already syncing; avoid overlapping loops
       _syncRequestedWhileBusy = true;
@@ -1825,6 +1930,7 @@ class ConnectionProvider with ChangeNotifier {
     int totalCount = 0;
 
     try {
+      _pendingAutomaticMessageSync = false;
       _isSyncingMessages = true;
       do {
         _syncRequestedWhileBusy = false;
@@ -1916,6 +2022,12 @@ class ConnectionProvider with ChangeNotifier {
     }
   }
 
+  bool get hasPendingAutomaticMessageSync => _pendingAutomaticMessageSync;
+
+  void clearPendingAutomaticMessageSync() {
+    _pendingAutomaticMessageSync = false;
+  }
+
   /// Login to a room or repeater
   ///
   /// Sends login request with password. Results will be delivered via

lib/providers/contacts_provider.dart

@@ -1,6 +1,8 @@
+import 'dart:math';
 import 'package:flutter/foundation.dart';
 import 'package:latlong2/latlong.dart';
 import '../models/contact.dart';
+import '../models/contact_group.dart';
 import '../models/message_contact_location.dart';
 import '../services/cayenne_lpp_parser.dart';
 import '../services/contact_storage_service.dart';
@@ -10,8 +12,15 @@ import '../utils/key_comparison.dart';
 class PendingAdvert {
   final Uint8List publicKey;
   final DateTime receivedAt;
+  final int? signedEncodedPathLen;
+  final Uint8List? paddedPathBytes;
 
-  const PendingAdvert({required this.publicKey, required this.receivedAt});
+  const PendingAdvert({
+    required this.publicKey,
+    required this.receivedAt,
+    this.signedEncodedPathLen,
+    this.paddedPathBytes,
+  });
 
   String get publicKeyHex =>
       publicKey.map((b) => b.toRadixString(16).padLeft(2, '0')).join('');
@@ -21,17 +30,36 @@ class PendingAdvert {
     return prefix.map((b) => b.toRadixString(16).padLeft(2, '0')).join(':');
   }
 
-  PendingAdvert copyWith({Uint8List? publicKey, DateTime? receivedAt}) {
+  PendingAdvert copyWith({
+    Uint8List? publicKey,
+    DateTime? receivedAt,
+    int? signedEncodedPathLen,
+    Uint8List? paddedPathBytes,
+  }) {
     return PendingAdvert(
       publicKey: publicKey ?? this.publicKey,
       receivedAt: receivedAt ?? this.receivedAt,
+      signedEncodedPathLen: signedEncodedPathLen ?? this.signedEncodedPathLen,
+      paddedPathBytes: paddedPathBytes ?? this.paddedPathBytes,
     );
   }
 }
 
+class _RetainedRoute {
+  final int signedEncodedPathLen;
+  final Uint8List paddedPathBytes;
+
+  const _RetainedRoute({
+    required this.signedEncodedPathLen,
+    required this.paddedPathBytes,
+  });
+}
+
 /// Contacts Provider - manages contact list and telemetry
 class ContactsProvider with ChangeNotifier {
+  static const double _firstHopFallbackOffsetMeters = 100.0;
   final Map<String, Contact> _contacts = {};
+  final List<SavedContactGroup> _savedContactGroups = <SavedContactGroup>[];
   final Map<String, PendingAdvert> _pendingAdverts = {};
   final ContactStorageService _storageService = ContactStorageService();
   bool _isInitialized = false;
@@ -53,6 +81,7 @@ class ContactsProvider with ChangeNotifier {
         '📦 [ContactsProvider] Early loading persisted contacts (no filtering)...',
       );
       final storedContacts = await _storageService.loadContacts();
+      final storedGroups = await _storageService.loadContactGroups();
 
       // Add stored contacts (excluding any with all-zeros public key)
       const publicChannelKey =
@@ -66,8 +95,11 @@ class ContactsProvider with ChangeNotifier {
       }
 
       _isInitialized = true;
+      _savedContactGroups
+        ..clear()
+        ..addAll(storedGroups);
       debugPrint(
-        '✅ [ContactsProvider] Early loaded ${storedContacts.length} persisted contacts',
+        '✅ [ContactsProvider] Early loaded ${storedContacts.length} persisted contacts and ${storedGroups.length} groups',
       );
 
       // Ensure public channel exists after loading
@@ -97,6 +129,7 @@ class ContactsProvider with ChangeNotifier {
       final storedContacts = await _storageService.loadContacts(
         excludePublicKey: devicePublicKey,
       );
+      final storedGroups = await _storageService.loadContactGroups();
 
       // Add stored contacts (excluding any with all-zeros public key)
       const publicChannelKey =
@@ -110,8 +143,11 @@ class ContactsProvider with ChangeNotifier {
       }
 
       _isInitialized = true;
+      _savedContactGroups
+        ..clear()
+        ..addAll(storedGroups);
       debugPrint(
-        '✅ [ContactsProvider] Loaded ${storedContacts.length} persisted contacts',
+        '✅ [ContactsProvider] Loaded ${storedContacts.length} persisted contacts and ${storedGroups.length} groups',
       );
 
       // Ensure public channel exists after loading
@@ -182,10 +218,97 @@ class ContactsProvider with ChangeNotifier {
   }
 
   List<Contact> get contacts => _contacts.values.toList();
+  List<SavedContactGroup> get savedContactGroups =>
+      List<SavedContactGroup>.from(_savedContactGroups)
+        ..sort((a, b) => b.createdAt.compareTo(a.createdAt));
   List<PendingAdvert> get pendingAdverts =>
       _pendingAdverts.values.toList()
         ..sort((a, b) => b.receivedAt.compareTo(a.receivedAt));
 
+  List<SavedContactGroup> savedGroupsForSection(String sectionKey) {
+    return savedContactGroups
+        .where((group) => group.sectionKey == sectionKey)
+        .toList();
+  }
+
+  bool hasSavedGroupForFilter(String sectionKey, String query) {
+    final normalizedQuery = _normalizeGroupQuery(query);
+    if (normalizedQuery.isEmpty) {
+      return false;
+    }
+
+    return _savedContactGroups.any(
+      (group) =>
+          group.sectionKey == sectionKey &&
+          _normalizeGroupQuery(group.query) == normalizedQuery,
+    );
+  }
+
+  Future<void> addSavedGroupForFilter(
+    String sectionKey,
+    String query, {
+    String? label,
+  }) async {
+    final normalizedQuery = _normalizeGroupQuery(query);
+    if (normalizedQuery.isEmpty ||
+        hasSavedGroupForFilter(sectionKey, normalizedQuery)) {
+      return;
+    }
+
+    _savedContactGroups.add(
+      SavedContactGroup(
+        id: '${sectionKey}_${DateTime.now().microsecondsSinceEpoch}',
+        sectionKey: sectionKey,
+        label: (label ?? query).trim(),
+        query: query.trim(),
+        createdAt: DateTime.now(),
+      ),
+    );
+
+    await _persistSavedGroups();
+    notifyListeners();
+  }
+
+  Future<void> removeSavedGroupById(String id) async {
+    final beforeCount = _savedContactGroups.length;
+    _savedContactGroups.removeWhere((group) => group.id == id);
+    if (_savedContactGroups.length == beforeCount) {
+      return;
+    }
+
+    await _persistSavedGroups();
+    notifyListeners();
+  }
+
+  Future<void> removeSavedGroupForFilter(
+    String sectionKey,
+    String query,
+  ) async {
+    final normalizedQuery = _normalizeGroupQuery(query);
+    final beforeCount = _savedContactGroups.length;
+    _savedContactGroups.removeWhere(
+      (group) =>
+          group.sectionKey == sectionKey &&
+          _normalizeGroupQuery(group.query) == normalizedQuery,
+    );
+    if (_savedContactGroups.length == beforeCount) {
+      return;
+    }
+
+    await _persistSavedGroups();
+    notifyListeners();
+  }
+
+  Future<void> _persistSavedGroups() async {
+    try {
+      await _storageService.saveContactGroups(_savedContactGroups);
+    } catch (e) {
+      debugPrint('❌ [ContactsProvider] Error persisting contact groups: $e');
+    }
+  }
+
+  String _normalizeGroupQuery(String query) => query.trim().toLowerCase();
+
   List<Contact> get chatContacts =>
       contacts.where((c) => c.isChat).toList()..sort(_sortByLastSeen);
 
@@ -338,8 +461,42 @@ class ContactsProvider with ChangeNotifier {
     required Contact incomingContact,
     Contact? existingContact,
   }) {
+    final retainedRoute = _retainedRouteForContact(
+      keyHex: incomingContact.publicKeyHex,
+      incomingContact: incomingContact,
+      existingContact: existingContact,
+    );
+    final mergedTelemetry = _mergeTelemetryForContact(
+      existingTelemetry: existingContact?.telemetry,
+      incomingTelemetry: incomingContact.telemetry,
+    );
+    final inferredFallbackLocation = _inferFirstHopFallbackLocation(
+      incomingContact: incomingContact,
+      existingContact: existingContact,
+      retainedRoute: retainedRoute,
+      mergedTelemetry: mergedTelemetry,
+    );
+    final inferredFallbackAdvLat = inferredFallbackLocation != null
+        ? _coordinateToAdvertMicrodegrees(inferredFallbackLocation.latitude)
+        : null;
+    final inferredFallbackAdvLon = inferredFallbackLocation != null
+        ? _coordinateToAdvertMicrodegrees(inferredFallbackLocation.longitude)
+        : null;
+
     if (existingContact == null) {
-      var newContact = incomingContact.copyWith(isNew: true);
+      var newContact = incomingContact.copyWith(
+        isNew: true,
+        telemetry: mergedTelemetry,
+        outPathLen:
+            retainedRoute?.signedEncodedPathLen ?? incomingContact.outPathLen,
+        outPath: retainedRoute?.paddedPathBytes ?? incomingContact.outPath,
+        advLat: incomingContact.advertLocation != null
+            ? incomingContact.advLat
+            : inferredFallbackAdvLat ?? incomingContact.advLat,
+        advLon: incomingContact.advertLocation != null
+            ? incomingContact.advLon
+            : inferredFallbackAdvLon ?? incomingContact.advLon,
+      );
       if (incomingContact.advertLocation != null) {
         final timestamp = DateTime.fromMillisecondsSinceEpoch(
           incomingContact.lastAdvert * 1000,
@@ -352,27 +509,26 @@ class ContactsProvider with ChangeNotifier {
       return newContact;
     }
 
-    final mergedTelemetry = _mergeTelemetryForContact(
-      existingTelemetry: existingContact.telemetry,
-      incomingTelemetry: incomingContact.telemetry,
-    );
     final incomingAdvertLocation = incomingContact.advertLocation;
     final existingAdvertLocation = existingContact.advertLocation;
 
     var updatedContact = incomingContact.copyWith(
-      isNew: existingContact.isNew,
+      isNew: false,
       advertHistory: existingContact.advertHistory,
       telemetry: mergedTelemetry,
+      outPathLen:
+          retainedRoute?.signedEncodedPathLen ?? incomingContact.outPathLen,
+      outPath: retainedRoute?.paddedPathBytes ?? incomingContact.outPath,
       advLat: incomingAdvertLocation != null
           ? incomingContact.advLat
           : existingAdvertLocation != null
           ? existingContact.advLat
-          : incomingContact.advLat,
+          : inferredFallbackAdvLat ?? incomingContact.advLat,
       advLon: incomingAdvertLocation != null
           ? incomingContact.advLon
           : existingAdvertLocation != null
           ? existingContact.advLon
-          : incomingContact.advLon,
+          : inferredFallbackAdvLon ?? incomingContact.advLon,
     );
 
     if (incomingAdvertLocation != null) {
@@ -388,6 +544,145 @@ class ContactsProvider with ChangeNotifier {
     return updatedContact;
   }
 
+  _RetainedRoute? _retainedRouteForContact({
+    required String keyHex,
+    required Contact incomingContact,
+    required Contact? existingContact,
+  }) {
+    if (incomingContact.routeHasPath) {
+      return null;
+    }
+
+    final pendingAdvert = _pendingAdverts[keyHex];
+    final pendingPathBytes = pendingAdvert?.paddedPathBytes;
+    final pendingPathLen = pendingAdvert?.signedEncodedPathLen;
+    if (pendingPathLen != null &&
+        pendingPathBytes != null &&
+        pendingPathBytes.isNotEmpty) {
+      return _RetainedRoute(
+        signedEncodedPathLen: pendingPathLen,
+        paddedPathBytes: Uint8List.fromList(pendingPathBytes),
+      );
+    }
+
+    if (existingContact != null && existingContact.routeHasPath) {
+      return _RetainedRoute(
+        signedEncodedPathLen: existingContact.outPathLen,
+        paddedPathBytes: Uint8List.fromList(existingContact.outPath),
+      );
+    }
+
+    return null;
+  }
+
+  LatLng? _inferFirstHopFallbackLocation({
+    required Contact incomingContact,
+    required Contact? existingContact,
+    required _RetainedRoute? retainedRoute,
+    required ContactTelemetry? mergedTelemetry,
+  }) {
+    if (_getValidGpsOrNull(mergedTelemetry?.gpsLocation) != null) {
+      return null;
+    }
+    if (incomingContact.advertLocation != null ||
+        existingContact?.advertLocation != null) {
+      return null;
+    }
+
+    final routeBytes =
+        retainedRoute?.paddedPathBytes ??
+        (incomingContact.routeHasPath
+            ? incomingContact.routePathBytes
+            : existingContact?.routeHasPath == true
+            ? existingContact!.routePathBytes
+            : null);
+    final routeHashSize = retainedRoute != null
+        ? ((ContactRouteCodec.toUnsignedDescriptor(
+                    retainedRoute.signedEncodedPathLen,
+                  ) >>
+                  6) +
+              1)
+        : incomingContact.routeHasPath
+        ? incomingContact.routeHashSize
+        : existingContact?.routeHasPath == true
+        ? existingContact!.routeHashSize
+        : 0;
+    if (routeBytes == null ||
+        routeHashSize <= 0 ||
+        routeBytes.length < routeHashSize) {
+      return null;
+    }
+
+    final lastHopHex = routeBytes
+        .sublist(routeBytes.length - routeHashSize)
+        .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
+        .join();
+    final repeaterCandidates = _contacts.values.where((candidate) {
+      if (!candidate.isRepeater ||
+          candidate.publicKeyHex == incomingContact.publicKeyHex) {
+        return false;
+      }
+      final location = candidate.displayLocation;
+      return location != null && candidate.publicKeyHex.startsWith(lastHopHex);
+    }).toList()..sort((a, b) => b.lastAdvert.compareTo(a.lastAdvert));
+    if (repeaterCandidates.isEmpty) {
+      return null;
+    }
+
+    final repeaterLocation = repeaterCandidates.first.displayLocation;
+    if (repeaterLocation == null) {
+      return null;
+    }
+
+    final bearingDegrees = _stableFallbackBearingDegrees(incomingContact);
+    return _offsetFromLocation(
+      repeaterLocation,
+      distanceMeters: _firstHopFallbackOffsetMeters,
+      bearingDegrees: bearingDegrees,
+    );
+  }
+
+  double _stableFallbackBearingDegrees(Contact contact) {
+    if (contact.publicKey.length < 2) {
+      return 90.0;
+    }
+    final seed = (contact.publicKey[0] << 8) | contact.publicKey[1];
+    return (seed % 360).toDouble();
+  }
+
+  LatLng _offsetFromLocation(
+    LatLng origin, {
+    required double distanceMeters,
+    required double bearingDegrees,
+  }) {
+    const earthRadiusMeters = 6371000.0;
+    final angularDistance = distanceMeters / earthRadiusMeters;
+    final bearingRadians = bearingDegrees * 3.1415926535897932 / 180.0;
+    final lat1 = origin.latitude * 3.1415926535897932 / 180.0;
+    final lon1 = origin.longitude * 3.1415926535897932 / 180.0;
+
+    final sinLat1 = sin(lat1);
+    final cosLat1 = cos(lat1);
+    final sinAngularDistance = sin(angularDistance);
+    final cosAngularDistance = cos(angularDistance);
+
+    final lat2 = asin(
+      sinLat1 * cosAngularDistance +
+          cosLat1 * sinAngularDistance * cos(bearingRadians),
+    );
+    final lon2 =
+        lon1 +
+        atan2(
+          sin(bearingRadians) * sinAngularDistance * cosLat1,
+          cosAngularDistance - sinLat1 * sin(lat2),
+        );
+
+    return LatLng(
+      lat2 * 180.0 / 3.1415926535897932,
+      ((lon2 * 180.0 / 3.1415926535897932 + 540.0) % 360.0) - 180.0,
+    );
+  }
+
   /// Update contact telemetry
   void updateTelemetry(Uint8List publicKeyPrefix, Uint8List lppData) {
     debugPrint('📊 [ContactsProvider] updateTelemetry() called');
@@ -646,20 +941,74 @@ class ContactsProvider with ChangeNotifier {
     Uint8List publicKey, {
     required int signedEncodedPathLen,
     required Uint8List paddedPathBytes,
+    LatLng? inferredFallbackLocation,
   }) {
     final contact = findContactByKey(publicKey);
     if (contact == null) {
       return;
     }
 
-    _contacts[contact.publicKeyHex] = contact.copyWith(
+    var updatedContact = contact.copyWith(
       outPathLen: signedEncodedPathLen,
       outPath: Uint8List.fromList(paddedPathBytes),
     );
+    if (inferredFallbackLocation != null) {
+      updatedContact = updatedContact
+          .copyWith(
+            advLat: _coordinateToAdvertMicrodegrees(
+              inferredFallbackLocation.latitude,
+            ),
+            advLon: _coordinateToAdvertMicrodegrees(
+              inferredFallbackLocation.longitude,
+            ),
+          )
+          .addAdvertLocation(inferredFallbackLocation, DateTime.now());
+    }
+    _contacts[contact.publicKeyHex] = updatedContact;
     _persistContacts();
     notifyListeners();
   }
 
+  void retainReceivedRoute(
+    Uint8List publicKey, {
+    required int signedEncodedPathLen,
+    required Uint8List paddedPathBytes,
+    Uint8List? devicePublicKey,
+  }) {
+    if (devicePublicKey != null && publicKey.matches(devicePublicKey)) {
+      return;
+    }
+
+    final keyHex = publicKey
+        .map((b) => b.toRadixString(16).padLeft(2, '0'))
+        .join('');
+    final contact = _contacts[keyHex];
+    if (contact != null) {
+      _contacts[keyHex] = contact.copyWith(
+        outPathLen: signedEncodedPathLen,
+        outPath: Uint8List.fromList(paddedPathBytes),
+      );
+      _persistContacts();
+      notifyListeners();
+      return;
+    }
+
+    final now = DateTime.now();
+    final existing = _pendingAdverts[keyHex];
+    _pendingAdverts[keyHex] =
+        (existing ??
+                PendingAdvert(
+                  publicKey: Uint8List.fromList(publicKey),
+                  receivedAt: now,
+                ))
+            .copyWith(
+              receivedAt: now,
+              signedEncodedPathLen: signedEncodedPathLen,
+              paddedPathBytes: Uint8List.fromList(paddedPathBytes),
+            );
+    notifyListeners();
+  }
+
   void resetContactRouteLocal(Uint8List publicKey) {
     final contact = findContactByKey(publicKey);
     if (contact == null) {

lib/providers/helpers/message_retry_manager.dart

@@ -5,15 +5,13 @@ import '../../models/contact.dart';
 
 /// Manages message retry state and logic
 ///
-/// This helper class centralizes retry logic for direct messages, implementing
-/// a progressive timeout strategy (4s, 8s, 12s) for messages sent to contacts
-/// with learned routing paths.
+/// This helper class centralizes retry logic for direct messages.
 ///
 /// IMPORTANT: Based on MeshCore firmware analysis:
 /// - Firmware calculates timeout based on path length and airtime
 /// - Direct mode: ~(path_len * airtime * 2) + margin
 /// - Flood mode: ~10-30 seconds for multi-hop
-/// - Our timeouts (4s, 8s, 12s) are conservative for direct paths
+/// - Our retry delays (1s, 2s, 4s, 8s) are app-level backoff timers
 /// - Firmware does NOT automatically retry - app must implement
 class MessageRetryManager {
   // Track retry state for each message ID
@@ -21,10 +19,10 @@ class MessageRetryManager {
   final Map<String, DateTime> _lastRetryTimes = {};
   final Map<String, int> _pathFailureStreaks = {};
 
-  // Progressive timeout values in milliseconds
-  // These are app-level timeouts, separate from firmware's suggested timeout
-  // Firmware timeout is for ACK arrival, these are for retry attempts
-  static const List<int> _timeouts = [4000, 8000, 12000];
+  static const int maxRetryAttempts = 4;
+
+  // Retry backoff values in milliseconds.
+  static const List<int> _retryDelays = [1000, 2000, 4000, 8000];
   static const int _defaultLoRaSf = 10;
   static const int _defaultLoRaCr = 5;
   static const int _defaultLoRaBwHz = 250000;
@@ -32,13 +30,12 @@ class MessageRetryManager {
   static const int _defaultLoRaCrcEnabled = 1;
   static const int _defaultLoRaExplicitHeader = 1;
 
-  /// Get timeout for a specific retry attempt (0-2)
-  /// Returns: 4000ms for attempt 0, 8000ms for attempt 1, 12000ms for attempt 2
-  int getTimeoutForAttempt(int attempt) {
-    if (attempt < 0 || attempt >= _timeouts.length) {
-      return _timeouts.last; // Default to last timeout if out of range
+  /// Get backoff delay for the next retry attempt.
+  int getDelayForAttempt(int attempt) {
+    if (attempt < 0 || attempt >= _retryDelays.length) {
+      return _retryDelays.last;
     }
-    return _timeouts[attempt];
+    return _retryDelays[attempt];
   }
 
   /// Calculate a conservative delivery-ACK timeout when firmware doesn't
@@ -65,43 +62,8 @@ class MessageRetryManager {
     return ((airtimeMs * (hopCount + 1) * 2) + 1500).clamp(4000, 20000);
   }
 
-  /// Check if a message is eligible for retry
-  ///
-  /// Returns true if:
-  /// - The message has retryAttempt < 3
-  /// - The contact has a learned path (contact.hasPath == true)
-  /// - The message hasn't used flood fallback yet
-  ///
-  /// Messages to contacts without paths should NOT retry (flood mode already broadcasts)
   bool canRetry(Message message, Contact contact) {
-    // Never retry if already tried flood mode
-    if (message.usedFloodFallback) {
-      return false;
-    }
-
-    // Never retry beyond 3 attempts
-    if (message.retryAttempt >= 3) {
-      return false;
-    }
-
-    // Only retry if contact has a learned path
-    // If no path, the device uses flood mode automatically - retrying won't help
-    return contact.routeHasPath;
-  }
-
-  /// Check if should fall back to flood mode
-  ///
-  /// Returns true if:
-  /// - Message has exhausted all 3 retry attempts with direct mode
-  /// - Contact HAS a learned path (so direct mode was used)
-  /// - Hasn't already used flood fallback
-  ///
-  /// IMPORTANT: Only contacts WITH paths need flood fallback.
-  /// Contacts without paths already use flood mode automatically.
-  bool shouldUseFloodFallback(Message message, Contact contact) {
-    return message.retryAttempt >= 3 &&
-        contact.routeHasPath &&
-        !message.usedFloodFallback;
+    return message.retryAttempt < maxRetryAttempts;
   }
 
   /// Track a retry attempt for a message

lib/providers/helpers/raw_session_retransmit.dart

@@ -38,12 +38,6 @@ Future<bool> serveCachedSessionFragments<T>({
     );
     return false;
   }
-  if (!requester.routeSupportsLegacyRawTransport) {
-    debugPrint(
-      '⚠️ [$providerLabel] ${requester.advName} route uses unsupported 3-byte raw transport on current client',
-    );
-    return false;
-  }
   if (requester.outPath.isEmpty) {
     debugPrint(
       '⚠️ [$providerLabel] ${requester.advName} has empty outPath payload',
@@ -64,7 +58,7 @@ Future<bool> serveCachedSessionFragments<T>({
     try {
       await sendRawPacket(
         contactPath: requester.outPath,
-        contactPathLen: requester.routeSignedPathLen,
+        contactPathLen: requester.routeEncodedPathLen,
         payload: encodeBinary(fragment),
       );
       servedCount++;

lib/providers/messages_provider.dart

@@ -5,6 +5,8 @@ import '../models/contact.dart';
 import '../models/message_contact_location.dart';
 import '../models/message_reception_details.dart';
 import '../models/message_transfer_details.dart';
+import '../models/message_route_metadata.dart';
+import '../models/path_selection.dart';
 import '../models/sar_marker.dart';
 import '../models/map_drawing.dart';
 import '../services/message_storage_service.dart';
@@ -27,6 +29,7 @@ class MessagesProvider with ChangeNotifier {
   final Map<String, MessageContactLocation> _messageContactLocations = {};
   final Map<String, MessageReceptionDetails> _messageReceptionDetails = {};
   final Map<String, MessageTransferDetails> _messageTransferDetails = {};
+  final Map<String, MessageRouteMetadata> _messageRouteMetadata = {};
 
   // Track pending sent messages by expected ACK/TAG
   final Map<int, Message> _pendingSentMessages = {};
@@ -59,6 +62,8 @@ class MessagesProvider with ChangeNotifier {
 
   // Navigation state for message highlighting/scrolling
   String? _targetMessageId;
+  String? _targetDestinationType;
+  String? _targetRecipientPublicKeyHex;
 
   // Helper function to compare Uint8List for equality
   bool _listEquals(Uint8List a, Uint8List b) {
@@ -81,6 +86,26 @@ class MessagesProvider with ChangeNotifier {
 
   Future<void> Function({required Contact contact, required int failureStreak})?
   onDirectPathFailedCallback;
+  void Function(String messageId)? onManualRetryPreparedCallback;
+  Future<bool> Function({
+    required String messageId,
+    required Contact contact,
+    required Message message,
+  })?
+  onFinalRouterFallbackCallback;
+  Future<void> Function({
+    required String messageId,
+    required Contact contact,
+    required Message message,
+  })?
+  onFinalDirectMessageFailureCallback;
+  void Function({
+    required String messageId,
+    required Contact contact,
+    required Message message,
+    required int roundTripTimeMs,
+  })?
+  onDirectMessageDeliveredCallback;
 
   String? Function(Uint8List? publicKey)? resolveContactNameCallback;
   String Function(int channelIdx)? resolveChannelNameCallback;
@@ -126,6 +151,34 @@ class MessagesProvider with ChangeNotifier {
   MessageTransferDetails? getMessageTransferDetails(String messageId) =>
       _messageTransferDetails[messageId];
 
+  MessageRouteMetadata? getMessageRouteMetadata(String messageId) =>
+      _messageRouteMetadata[messageId];
+
+  void updateMessageRouteSelection(
+    String messageId,
+    PathSelection selection, {
+    required bool routerFallbackAttempted,
+  }) {
+    _messageRouteMetadata[messageId] = MessageRouteMetadata.fromSelection(
+      selection,
+      routerFallbackAttempted: routerFallbackAttempted,
+    );
+
+    final index = _messages.indexWhere((message) => message.id == messageId);
+    if (index != -1) {
+      final nextPathLen = selection.hopCount > 0
+          ? selection.hopCount
+          : _messages[index].pathLen;
+      _messages[index] = _messages[index].copyWith(
+        usedFloodFallback: selection.usesFlood,
+        pathLen: nextPathLen,
+      );
+    }
+
+    _persistMessages();
+    notifyListeners();
+  }
+
   /// Set localizations for notifications
   void setLocalizations(AppLocalizations localizations) {
     _localizations = localizations;
@@ -137,16 +190,99 @@ class MessagesProvider with ChangeNotifier {
     notifyListeners();
   }
 
+  String? get targetDestinationType => _targetDestinationType;
+  String? get targetRecipientPublicKeyHex => _targetRecipientPublicKeyHex;
+
+  void navigateToDestination(String type, {String? recipientPublicKeyHex}) {
+    _targetDestinationType = type;
+    _targetRecipientPublicKeyHex = recipientPublicKeyHex;
+    notifyListeners();
+  }
+
   /// Clear message navigation state
   void clearMessageNavigation() {
     _targetMessageId = null;
   }
 
+  void clearDestinationNavigation() {
+    _targetDestinationType = null;
+    _targetRecipientPublicKeyHex = null;
+  }
+
   /// Get count of unread messages (excluding sent messages and system messages)
   int get unreadCount => _messages
       .where((m) => !m.isRead && !m.isSentMessage && !m.isSystemMessage)
       .length;
 
+  int getMessageCountForDestination(Contact contact) => _messages
+      .where((message) => _isMessageForDestination(message, contact))
+      .length;
+
+  DateTime? getLastActivityForDestination(Contact contact) {
+    DateTime? latest;
+
+    for (final message in _messages) {
+      if (!_isMessageForDestination(message, contact)) {
+        continue;
+      }
+
+      if (latest == null || message.sentAt.isAfter(latest)) {
+        latest = message.sentAt;
+      }
+    }
+
+    return latest;
+  }
+
+  int getUnreadCountForDestination(Contact contact) => _messages
+      .where(
+        (message) =>
+            _isMessageForDestination(message, contact) &&
+            !message.isRead &&
+            !message.isSentMessage &&
+            !message.isSystemMessage,
+      )
+      .length;
+
+  bool _isMessageForDestination(Message message, Contact contact) {
+    if (message.isSystemMessage) return false;
+
+    if (contact.isChannel) {
+      final channelIdx = contact.publicKey.length > 1
+          ? contact.publicKey[1]
+          : 0;
+      return message.isChannelMessage &&
+          (message.channelIdx ?? 0) == channelIdx;
+    }
+
+    if (!message.isContactMessage || contact.publicKey.length < 6) {
+      return false;
+    }
+
+    final selectedPrefix = contact.publicKey.sublist(0, 6);
+
+    if (message.recipientPublicKey != null &&
+        message.recipientPublicKey!.length >= 6 &&
+        _matchesPrefix(message.recipientPublicKey!, selectedPrefix)) {
+      return true;
+    }
+
+    if (message.senderPublicKeyPrefix != null &&
+        message.senderPublicKeyPrefix!.length >= 6 &&
+        _matchesPrefix(message.senderPublicKeyPrefix!, selectedPrefix)) {
+      return true;
+    }
+
+    return false;
+  }
+
+  bool _matchesPrefix(Uint8List key, Uint8List prefix) {
+    for (var i = 0; i < 6; i++) {
+      if (key[i] != prefix[i]) return false;
+    }
+    return true;
+  }
+
   /// Initialize and load persisted messages
   Future<void> initialize() async {
     if (_isInitialized) return;
@@ -160,6 +296,8 @@ class MessagesProvider with ChangeNotifier {
           .loadMessageReceptionDetails();
       final storedTransferDetails = await _storageService
           .loadMessageTransferDetails();
+      final storedRouteMetadata = await _storageService
+          .loadMessageRouteMetadata();
       _messageContactLocations
         ..clear()
         ..addAll(storedContactLocations);
@@ -169,6 +307,9 @@ class MessagesProvider with ChangeNotifier {
       _messageTransferDetails
         ..clear()
         ..addAll(storedTransferDetails);
+      _messageRouteMetadata
+        ..clear()
+        ..addAll(storedRouteMetadata);
 
       // Add stored messages with enhancement to ensure SAR detection
       for (final message in storedMessages) {
@@ -629,9 +770,17 @@ class MessagesProvider with ChangeNotifier {
     final idx = channelIdx ?? 0;
     final resolved = resolveChannelNameCallback?.call(idx).trim();
     if (resolved != null && resolved.isNotEmpty) {
+      if (idx == 0 && resolved == 'Public') {
+        return _localizations?.publicChannel ?? resolved;
+      }
       return resolved;
     }
-    return idx == 0 ? 'Public' : 'Channel $idx';
+    if (idx == 0) {
+      return _localizations?.publicChannel ?? 'Public';
+    }
+    return _localizations != null
+        ? '${_localizations!.channel} $idx'
+        : 'Channel $idx';
   }
 
   String _buildNotificationMessageText(
@@ -645,14 +794,14 @@ class MessagesProvider with ChangeNotifier {
       final seconds = (voiceEnvelope.durationMs / 1000).ceil();
       final summary =
           'Voice message - ${voiceEnvelope.mode.label} - ${seconds}s - ${voiceEnvelope.total} packets';
-      return isChannelMessage ? '$senderName\n$summary' : summary;
+      return summary;
     }
 
     final imageEnvelope = ImageEnvelope.tryParse(message.text);
     if (imageEnvelope != null) {
       final summary =
           'Image - ${imageEnvelope.format.label} - ${imageEnvelope.width}x${imageEnvelope.height} - ${_formatBytes(imageEnvelope.sizeBytes)}';
-      return isChannelMessage ? '$senderName\n$summary' : summary;
+      return summary;
     }
 
     if (!isChannelMessage && message.recipientPublicKey != null) {
@@ -665,10 +814,6 @@ class MessagesProvider with ChangeNotifier {
       }
     }
 
-    if (isChannelMessage) {
-      return '$senderName\n${message.text}';
-    }
-
     return message.text;
   }
 
@@ -688,6 +833,7 @@ class MessagesProvider with ChangeNotifier {
         messageContactLocations: _messageContactLocations,
         messageReceptionDetails: _messageReceptionDetails,
         messageTransferDetails: _messageTransferDetails,
+        messageRouteMetadata: _messageRouteMetadata,
       );
     } catch (e) {
       debugPrint('❌ [MessagesProvider] Error persisting messages: $e');
@@ -768,6 +914,55 @@ class MessagesProvider with ChangeNotifier {
     }
   }
 
+  /// Mark unread messages for a specific destination as read.
+  void markDestinationAsRead({
+    required String destinationType,
+    Contact? contact,
+  }) {
+    if (destinationType == 'all') {
+      markAllAsRead();
+      return;
+    }
+
+    bool hasChanges = false;
+    for (int i = 0; i < _messages.length; i++) {
+      final message = _messages[i];
+      if (message.isRead || message.isSentMessage || message.isSystemMessage) {
+        continue;
+      }
+
+      final matchesDestination = switch (destinationType) {
+        'channel' => _isChannelMessageForContact(message, contact),
+        'contact' ||
+        'room' => contact != null && _isMessageForDestination(message, contact),
+        _ => false,
+      };
+
+      if (!matchesDestination) {
+        continue;
+      }
+
+      _messages[i] = message.copyWith(isRead: true);
+      hasChanges = true;
+    }
+
+    if (hasChanges) {
+      _persistMessages();
+      notifyListeners();
+    }
+  }
+
+  bool _isChannelMessageForContact(Message message, Contact? contact) {
+    if (!message.isChannelMessage) {
+      return false;
+    }
+
+    final selectedChannelIdx = contact != null && contact.publicKey.length > 1
+        ? contact.publicKey[1]
+        : 0;
+    return (message.channelIdx ?? 0) == selectedChannelIdx;
+  }
+
   /// Mark a specific message as read
   void markAsRead(String messageId) {
     final index = _messages.indexWhere((m) => m.id == messageId);
@@ -806,6 +1001,7 @@ class MessagesProvider with ChangeNotifier {
       _messageContactLocations.remove(messageId);
       _messageReceptionDetails.remove(messageId);
       _messageTransferDetails.remove(messageId);
+      _messageRouteMetadata.remove(messageId);
 
       debugPrint('🗑️ [MessagesProvider] Message $messageId deleted');
 
@@ -837,6 +1033,7 @@ class MessagesProvider with ChangeNotifier {
     _messageContactLocations.clear();
     _messageReceptionDetails.clear();
     _messageTransferDetails.clear();
+    _messageRouteMetadata.clear();
     _persistMessages();
     notifyListeners();
   }
@@ -854,6 +1051,7 @@ class MessagesProvider with ChangeNotifier {
     _messageContactLocations.clear();
     _messageReceptionDetails.clear();
     _messageTransferDetails.clear();
+    _messageRouteMetadata.clear();
     _persistMessages();
     notifyListeners();
   }
@@ -1549,6 +1747,12 @@ class MessagesProvider with ChangeNotifier {
         final deliveredContact = _messageContactMap[message.id];
         if (deliveredContact != null) {
           _retryManager.recordDeliverySuccess(deliveredContact);
+          onDirectMessageDeliveredCallback?.call(
+            messageId: message.id,
+            contact: deliveredContact,
+            message: updatedMessage,
+            roundTripTimeMs: roundTripTimeMs,
+          );
         }
 
         debugPrint(
@@ -1592,6 +1796,12 @@ class MessagesProvider with ChangeNotifier {
           final deliveredContact = _messageContactMap[historicalMessageId];
           if (deliveredContact != null) {
             _retryManager.recordDeliverySuccess(deliveredContact);
+            onDirectMessageDeliveredCallback?.call(
+              messageId: historicalMessageId,
+              contact: deliveredContact,
+              message: _messages[historicalIndex],
+              roundTripTimeMs: roundTripTimeMs,
+            );
           }
           _persistMessages();
           notifyListeners();
@@ -1677,29 +1887,29 @@ class MessagesProvider with ChangeNotifier {
     debugPrint('   Contact has path: ${contact?.routeHasPath ?? false}');
     debugPrint('   Used flood fallback: ${message.usedFloodFallback}');
 
-    // Decision tree for retry/flood/fail
+    final routeMetadata = _messageRouteMetadata[messageId];
+    final routerFallbackAttempted =
+        routeMetadata?.routerFallbackAttempted ?? false;
+
+    // Decision tree for retry/final-router-fallback/fail
     if (contact != null && _retryManager.canRetry(message, contact)) {
-      // RETRY: Contact has path and retry attempts < 3
       _scheduleRetry(messageId, message, contact);
-    } else if (contact != null &&
-        _retryManager.shouldUseFloodFallback(message, contact)) {
-      // FLOOD FALLBACK: After 3 retries failed, try flood once
-      _sendWithFloodMode(messageId, message, contact);
+    } else if (contact != null && !routerFallbackAttempted) {
+      unawaited(_sendWithFinalRouterFallback(messageId, message, contact));
     } else {
-      // PERMANENTLY FAILED: No retry possible
       _markAsPermanentlyFailed(messageId, message);
     }
   }
 
-  /// Schedule a retry with progressive timeout
+  /// Schedule a retry with exponential backoff.
   void _scheduleRetry(String messageId, Message message, Contact contact) {
     final nextAttempt = message.retryAttempt + 1;
-    final timeout = _retryManager.getTimeoutForAttempt(message.retryAttempt);
+    final delayMs = _retryManager.getDelayForAttempt(message.retryAttempt);
 
     debugPrint(
-      '🔄 [MessagesProvider] Scheduling retry $nextAttempt/3 for message $messageId',
+      '🔄 [MessagesProvider] Scheduling retry $nextAttempt/${MessageRetryManager.maxRetryAttempts} for message $messageId',
     );
-    debugPrint('   Timeout: ${timeout}ms');
+    debugPrint('   Delay: ${delayMs}ms');
 
     // Update message with new retry attempt
     final index = _messages.indexWhere((m) => m.id == messageId);
@@ -1720,10 +1930,10 @@ class MessagesProvider with ChangeNotifier {
       // Track retry
       _retryManager.trackRetry(messageId, nextAttempt);
 
-      notifyListeners(); // Update UI to show "Retrying (X/3)..."
+      notifyListeners();
 
       // Schedule actual retry after delay
-      Timer(Duration(milliseconds: timeout), () async {
+      Timer(Duration(milliseconds: delayMs), () async {
         debugPrint(
           '⏰ [MessagesProvider] Executing retry $nextAttempt for message $messageId',
         );
@@ -1759,49 +1969,46 @@ class MessagesProvider with ChangeNotifier {
     }
   }
 
-  /// Send message with flood mode as last resort
-  Future<void> _sendWithFloodMode(
+  Future<void> _sendWithFinalRouterFallback(
     String messageId,
     Message message,
     Contact contact,
   ) async {
     debugPrint(
-      '🌊 [MessagesProvider] Trying flood mode for message $messageId',
+      '🛟 [MessagesProvider] Trying final router fallback for $messageId',
     );
 
     final index = _messages.indexWhere((m) => m.id == messageId);
     if (index != -1) {
       _messages[index] = message.copyWith(
-        usedFloodFallback: true,
         deliveryStatus: MessageDeliveryStatus.sending,
+        lastRetryAt: DateTime.now(),
       );
 
-      // Cancel old timeout timer
       _timeoutTimers[message.id]?.cancel();
       _timeoutTimers.remove(message.id);
       if (message.expectedAckTag != null) {
         _pendingSentMessages.remove(message.expectedAckTag);
       }
+      _clearAckHistoryForMessage(messageId);
 
       notifyListeners();
 
-      // Send with flood mode (no retry after this)
-      if (sendMessageCallback != null) {
-        final queued = await sendMessageCallback!(
-          contactPublicKey: contact.publicKey,
-          text: message.text,
-          messageId: messageId,
-          contact: contact,
-          retryAttempt: 0, // Reset attempt for flood
-        );
-        if (!queued) {
-          _markAsPermanentlyFailed(messageId, _messages[index]);
-        }
-      } else {
+      if (onFinalRouterFallbackCallback == null) {
         debugPrint(
-          '⚠️ [MessagesProvider] sendMessageCallback not set, cannot send flood',
+          '⚠️ [MessagesProvider] onFinalRouterFallbackCallback not set',
         );
         _markAsPermanentlyFailed(messageId, _messages[index]);
+        return;
+      }
+
+      final queued = await onFinalRouterFallbackCallback!(
+        messageId: messageId,
+        contact: contact,
+        message: _messages[index],
+      );
+      if (!queued) {
+        _markAsPermanentlyFailed(messageId, _messages[index]);
       }
 
       _persistMessages();
@@ -1830,19 +2037,15 @@ class MessagesProvider with ChangeNotifier {
       _retryManager.clearRetry(messageId);
 
       final failedContact = _messageContactMap[messageId];
-      if (failedContact != null && failedContact.routeHasPath) {
-        final failureStreak = _retryManager.recordPathFailure(failedContact);
-        debugPrint(
-          '   Path failure streak for ${failedContact.advName}: $failureStreak',
+      if (failedContact != null &&
+          onFinalDirectMessageFailureCallback != null) {
+        unawaited(
+          onFinalDirectMessageFailureCallback!(
+            messageId: messageId,
+            contact: failedContact,
+            message: _messages[index],
+          ),
         );
-        if (failureStreak >= 2 && onDirectPathFailedCallback != null) {
-          unawaited(
-            onDirectPathFailedCallback!(
-              contact: failedContact,
-              failureStreak: failureStreak,
-            ),
-          );
-        }
       }
 
       _persistMessages();
@@ -1870,6 +2073,8 @@ class MessagesProvider with ChangeNotifier {
     }
     _clearAckHistoryForMessage(messageId);
     _retryManager.clearRetry(messageId);
+    _messageRouteMetadata.remove(messageId);
+    onManualRetryPreparedCallback?.call(messageId);
 
     _messages[index] = Message(
       id: message.id,

lib/providers/voice_provider.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 import 'dart:convert';
+import 'dart:typed_data';
 import 'package:flutter/foundation.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import '../models/contact.dart';
@@ -299,11 +300,15 @@ class VoiceProvider with ChangeNotifier {
     );
 
     try {
-      final pcm = await _codec.decodePackets(session.packets, session.mode);
+      final decodedPcm = await _codec.decodePackets(
+        session.packets,
+        session.mode,
+      );
+      final pcm = _preparePlaybackPcm(decodedPcm, session.mode);
       debugPrint('🎙️ [VoiceProvider] decoded ${pcm.length} PCM samples');
       _playingSessionId = sessionId;
       notifyListeners();
-      await _player.play(pcm);
+      await _player.play(pcm, sampleRateHz: session.mode.sampleRateHz);
     } catch (e, st) {
       debugPrint('❌ [VoiceProvider] Playback error: $e\n$st');
       if (_playingSessionId == sessionId) {
@@ -319,6 +324,10 @@ class VoiceProvider with ChangeNotifier {
     notifyListeners();
   }
 
+  Int16List _preparePlaybackPcm(Int16List pcm, VoicePacketMode mode) {
+    return pcm;
+  }
+
   Future<void> clearStoredVoiceData() async {
     _sessions.clear();
     _outgoingSessions.clear();

lib/screens/home_screen.dart

@@ -14,15 +14,19 @@ import 'messages_tab.dart';
 import 'contacts_tab.dart';
 import 'sensors_tab.dart';
 import 'map_tab.dart';
+import 'repeaters_map_screen.dart';
 import 'settings_screen.dart';
 import 'device_config_screen.dart';
 import 'packet_log_screen.dart';
+import 'live_traffic_screen.dart';
 import 'spectrum_scan_screen.dart';
 import '../utils/toast_logger.dart';
 import '../l10n/app_localizations.dart';
 import '../widgets/permission_request_dialog.dart';
 import '../widgets/connection_dialog.dart';
 import '../utils/battery_display_helper.dart';
+import '../services/developer_mode_service.dart';
+import '../services/mesh_map_nodes_service.dart';
 
 enum _HomeTab { messages, contacts, sensors, map }
 
@@ -55,6 +59,7 @@ class _HomeScreenState extends State<HomeScreen>
   int _currentIndex = 0;
   bool _isMapFullscreen = false;
   bool _showRxTxIndicators = true;
+  bool _isDeveloperModeEnabled = false;
   bool _isMapEnabled = true;
   bool _isContactsEnabled = true;
   bool _isSensorsEnabled = false;
@@ -90,6 +95,8 @@ class _HomeScreenState extends State<HomeScreen>
     // Initialize synchronously so first build always has a valid controller.
     _initTabController();
     _loadRxTxPreference();
+    _loadDeveloperModePreference();
+    MeshMapNodesService.syncInBackgroundIfStale();
 
     // Show permission dialog after the first frame if needed
     if (widget.shouldShowPermissionDialog) {
@@ -192,7 +199,6 @@ class _HomeScreenState extends State<HomeScreen>
 
       switch (tab) {
         case _HomeTab.messages:
-          context.read<MessagesProvider>().markAllAsRead();
           break;
         case _HomeTab.contacts:
           context.read<ContactsProvider>().markAllAsViewed();
@@ -213,10 +219,17 @@ class _HomeScreenState extends State<HomeScreen>
     );
   }
 
+  void _openLiveTraffic(ConnectionProvider provider) {
+    openLiveTrafficScreen(context, provider);
+  }
+
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
     _lifecycleState = state;
     _syncFastLocationUiState();
+    if (state == AppLifecycleState.resumed) {
+      MeshMapNodesService.syncInBackgroundIfStale();
+    }
   }
 
   Future<void> _loadRxTxPreference() async {
@@ -228,6 +241,14 @@ class _HomeScreenState extends State<HomeScreen>
     }
   }
 
+  Future<void> _loadDeveloperModePreference() async {
+    final isEnabled = await DeveloperModeService.isEnabled();
+    if (!mounted) return;
+    setState(() {
+      _isDeveloperModeEnabled = isEnabled;
+    });
+  }
+
   @override
   void dispose() {
     WidgetsBinding.instance.removeObserver(this);
@@ -378,10 +399,14 @@ class _HomeScreenState extends State<HomeScreen>
     required int count,
     required bool isActive,
     required Color activeColor,
+    bool compact = false,
   }) {
     final color = isActive ? activeColor : Colors.grey;
     return Container(
-      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 5),
+      padding: EdgeInsets.symmetric(
+        horizontal: compact ? 7 : 8,
+        vertical: compact ? 4 : 5,
+      ),
       decoration: BoxDecoration(
         color: color.withValues(alpha: 0.12),
         borderRadius: BorderRadius.circular(999),
@@ -390,15 +415,15 @@ class _HomeScreenState extends State<HomeScreen>
         mainAxisSize: MainAxisSize.min,
         children: [
           Container(
-            width: 7,
-            height: 7,
+            width: compact ? 6 : 7,
+            height: compact ? 6 : 7,
             decoration: BoxDecoration(shape: BoxShape.circle, color: color),
           ),
-          const SizedBox(width: 6),
+          SizedBox(width: compact ? 5 : 6),
           Text(
             '$label:$count',
             style: TextStyle(
-              fontSize: 11,
+              fontSize: compact ? 10 : 11,
               fontWeight: FontWeight.w600,
               color: color,
             ),
@@ -598,56 +623,127 @@ class _HomeScreenState extends State<HomeScreen>
                 ),
                 PopupMenuButton(
                   icon: const Icon(Icons.more_vert),
-                  itemBuilder: (context) => [
-                    PopupMenuItem(
-                      child: Row(
-                        children: [
-                          const Icon(Icons.radar),
-                          const SizedBox(width: 8),
-                          const Text('Spectrum Scan'),
-                        ],
-                      ),
-                      onTap: () {
-                        final navigator = Navigator.of(context);
-                        Future.delayed(Duration.zero, () {
-                          if (!mounted) return;
-                          navigator.push(
-                            MaterialPageRoute(
-                              builder: (context) => const SpectrumScanScreen(),
-                            ),
-                          );
-                        });
-                      },
-                    ),
-                    PopupMenuItem(
-                      child: Row(
-                        children: [
-                          const Icon(Icons.settings),
-                          const SizedBox(width: 8),
-                          Text(AppLocalizations.of(context)!.settings),
-                        ],
-                      ),
-                      onTap: () {
-                        // Capture context-dependent objects before async gap
-                        final navigator = Navigator.of(context);
-                        Future.delayed(Duration.zero, () async {
-                          if (!mounted) return;
-                          await navigator.push(
-                            MaterialPageRoute(
-                              builder: (context) => SettingsScreen(
-                                onThemeChanged: widget.onThemeChanged,
-                                onLocaleChanged: widget.onLocaleChanged,
-                                currentTheme: widget.currentTheme,
-                                currentLocale: widget.currentLocale,
+                  itemBuilder: (context) {
+                    final items = <PopupMenuEntry<void>>[];
+
+                    if (_isDeveloperModeEnabled) {
+                      items.add(
+                        PopupMenuItem(
+                          child: Row(
+                            children: [
+                              const Icon(Icons.radar),
+                              const SizedBox(width: 8),
+                              const Text('Spectrum Scan'),
+                            ],
+                          ),
+                          onTap: () {
+                            final navigator = Navigator.of(context);
+                            Future.delayed(Duration.zero, () {
+                              if (!mounted) return;
+                              navigator.push(
+                                MaterialPageRoute(
+                                  builder: (context) =>
+                                      const SpectrumScanScreen(),
+                                ),
+                              );
+                            });
+                          },
+                        ),
+                      );
+                    }
+
+                    items.add(
+                      PopupMenuItem(
+                        child: const Row(
+                          children: [
+                            Icon(Icons.radar_outlined),
+                            SizedBox(width: 8),
+                            Text('Live Traffic'),
+                          ],
+                        ),
+                        onTap: () {
+                          final navigator = Navigator.of(context);
+                          final provider = context.read<ConnectionProvider>();
+                          Future.delayed(Duration.zero, () {
+                            if (!mounted) return;
+                            navigator.push(
+                              MaterialPageRoute(
+                                builder: (_) => LiveTrafficScreen.fromProvider(
+                                  provider,
+                                  openPacketLogs: () {
+                                    navigator.push(
+                                      MaterialPageRoute(
+                                        builder: (_) => PacketLogScreen(
+                                          bleService: provider.bleService,
+                                        ),
+                                      ),
+                                    );
+                                  },
+                                ),
                               ),
-                            ),
-                          );
-                          // Reload preference when returning from settings
-                          _loadRxTxPreference();
-                        });
-                      },
-                    ),
-                  ],
+                            );
+                          });
+                        },
+                      ),
+                    );
+
+                    items.add(
+                      PopupMenuItem(
+                        child: const Row(
+                          children: [
+                            Icon(Icons.router_outlined),
+                            SizedBox(width: 8),
+                            Text('Repeaters Map'),
+                          ],
+                        ),
+                        onTap: () {
+                          final navigator = Navigator.of(context);
+                          Future.delayed(Duration.zero, () {
+                            if (!mounted) return;
+                            navigator.push(
+                              MaterialPageRoute(
+                                builder: (context) =>
+                                    const RepeatersMapScreen(),
+                                fullscreenDialog: true,
+                              ),
+                            );
+                          });
+                        },
+                      ),
+                    );
+
+                    items.add(
+                      PopupMenuItem(
+                        child: Row(
+                          children: [
+                            const Icon(Icons.settings),
+                            const SizedBox(width: 8),
+                            Text(AppLocalizations.of(context)!.settings),
+                          ],
+                        ),
+                        onTap: () {
+                          final navigator = Navigator.of(context);
+                          Future.delayed(Duration.zero, () async {
+                            if (!mounted) return;
+                            await navigator.push(
+                              MaterialPageRoute(
+                                builder: (context) => SettingsScreen(
+                                  onThemeChanged: widget.onThemeChanged,
+                                  onLocaleChanged: widget.onLocaleChanged,
+                                  currentTheme: widget.currentTheme,
+                                  currentLocale: widget.currentLocale,
+                                ),
+                              ),
+                            );
+                            _loadRxTxPreference();
+                            _loadDeveloperModePreference();
+                          });
+                        },
+                      ),
+                    );
+
+                    return items;
+                  },
                 ),
               ],
             ),
@@ -666,6 +762,7 @@ class _HomeScreenState extends State<HomeScreen>
                 onNavigateToMap: _isMapEnabled
                     ? () => _navigateToTab(_HomeTab.map)
                     : null,
+                onNavigateToMessages: () => _navigateToTab(_HomeTab.messages),
               );
             case _HomeTab.sensors:
               return const SensorsTab();
@@ -715,7 +812,7 @@ class _HomeScreenState extends State<HomeScreen>
                               Icons.message,
                               unreadCount,
                             ),
-                            text: AppLocalizations.of(context)!.messages,
+                            text: 'Chat',
                           );
                         case _HomeTab.contacts:
                           return Tab(
@@ -999,6 +1096,7 @@ class _HomeScreenState extends State<HomeScreen>
                 SizedBox(width: isTight ? 8 : 12),
                 if (_showRxTxIndicators)
                   GestureDetector(
+                    onTap: () => _openLiveTraffic(provider),
                     onLongPress: () {
                       Navigator.push(
                         context,
@@ -1014,17 +1112,19 @@ class _HomeScreenState extends State<HomeScreen>
                             txActive: provider.txActivity,
                           )
                         : Container(
+                            constraints: const BoxConstraints(minHeight: 48),
                             padding: const EdgeInsets.symmetric(
-                              horizontal: 10,
-                              vertical: 8,
+                              horizontal: 8,
+                              vertical: 4,
                             ),
                             decoration: BoxDecoration(
                               color: theme.colorScheme.surfaceContainerHigh
                                   .withValues(alpha: 0.85),
-                              borderRadius: BorderRadius.circular(20),
+                              borderRadius: BorderRadius.circular(22),
                             ),
                             child: Column(
                               mainAxisSize: MainAxisSize.min,
+                              mainAxisAlignment: MainAxisAlignment.center,
                               crossAxisAlignment: CrossAxisAlignment.end,
                               children: [
                                 _buildActivityBadge(
@@ -1032,13 +1132,15 @@ class _HomeScreenState extends State<HomeScreen>
                                   count: provider.rxPacketCount,
                                   isActive: provider.rxActivity,
                                   activeColor: Colors.green,
+                                  compact: true,
                                 ),
-                                const SizedBox(height: 6),
+                                const SizedBox(height: 4),
                                 _buildActivityBadge(
                                   label: 'TX',
                                   count: provider.txPacketCount,
                                   isActive: provider.txActivity,
                                   activeColor: Colors.blue,
+                                  compact: true,
                                 ),
                               ],
                             ),

lib/screens/map_tab.dart

@@ -27,6 +27,7 @@ import '../widgets/map_debug_info.dart';
 import '../widgets/map/compass_widget.dart';
 import '../widgets/map/detailed_compass_dialog.dart';
 import '../widgets/map/drawing_layer.dart';
+import '../widgets/map/drawing_toolbar.dart';
 import '../widgets/map/location_trail_layer.dart';
 import '../widgets/map/trail_controls.dart';
 import '../widgets/map/map_message_overlay.dart';
@@ -2131,6 +2132,8 @@ class _MapTabState extends State<MapTab> with AutomaticKeepAliveClientMixin {
                 right: 16,
                 child: Column(
                   children: [
+                    const DrawingToolbar(),
+                    const SizedBox(height: 8),
                     // Hide other buttons when in drawing mode
                     if (!drawingProvider.isDrawing) ...[
                       // Current Location - always center to GPS

lib/screens/messages_tab.dart

@@ -71,7 +71,7 @@ class _MessagesTabState extends State<MessagesTab> {
   final VoiceRecorderService _voiceRecorder = VoiceRecorderService();
   bool _isRecording = false;
   bool _isSendingVoice = false;
-  static const int _maxVoicePackets = 10;
+  static const Duration _maxVoiceRecordingDuration = Duration(seconds: 30);
   static const double _silenceRmsThreshold = 500.0;
   static const double _silencePeakThreshold = 1400.0;
   static const int _maxInteriorSilentChunks = 2;
@@ -88,15 +88,13 @@ class _MessagesTabState extends State<MessagesTab> {
     _textController.addListener(_updateCharacterCount);
     // Load saved message destination
     _loadSavedDestination();
-    _loadVoiceBitrate();
-    // Mark all messages as read when tab is opened
+    _loadVoiceSettings();
     WidgetsBinding.instance.addPostFrameCallback((_) {
-      context.read<MessagesProvider>().markAllAsRead();
       _checkForNavigationRequest();
     });
   }
 
-  Future<void> _loadVoiceBitrate() async {
+  Future<void> _loadVoiceSettings() async {
     final bitrate = await VoiceBitratePreferences.getBitrate();
     if (!mounted) return;
     setState(() {
@@ -128,11 +126,20 @@ class _MessagesTabState extends State<MessagesTab> {
   void _checkForNavigationRequest() {
     final messagesProvider = context.read<MessagesProvider>();
     final targetMessageId = messagesProvider.targetMessageId;
+    final targetDestinationType = messagesProvider.targetDestinationType;
 
     if (targetMessageId != null) {
       _scrollToMessage(targetMessageId);
       messagesProvider.clearMessageNavigation();
     }
+
+    if (targetDestinationType != null) {
+      _applyPendingDestination(
+        type: targetDestinationType,
+        recipientPublicKeyHex: messagesProvider.targetRecipientPublicKeyHex,
+      );
+      messagesProvider.clearDestinationNavigation();
+    }
   }
 
   void _scrollToMessage(String messageId) {
@@ -258,6 +265,7 @@ class _MessagesTabState extends State<MessagesTab> {
   /// Show recipient selector bottom sheet
   void _showRecipientSelector() {
     final contactsProvider = context.read<ContactsProvider>();
+    final messagesProvider = context.read<MessagesProvider>();
 
     // Filter contacts by type
     final contacts = contactsProvider.contacts
@@ -278,6 +286,13 @@ class _MessagesTabState extends State<MessagesTab> {
         contacts: contacts,
         rooms: rooms,
         channels: channels,
+        unreadCount: messagesProvider.unreadCount,
+        unreadCountsByPublicKey: {
+          for (final contact in [...contacts, ...rooms, ...channels])
+            contact.publicKeyHex: messagesProvider.getUnreadCountForDestination(
+              contact,
+            ),
+        },
         currentDestinationType: _destinationType,
         currentRecipientPublicKey: _selectedRecipient?.publicKeyHex,
         onSelect: _onRecipientSelected,
@@ -292,6 +307,8 @@ class _MessagesTabState extends State<MessagesTab> {
       _selectedRecipient = recipient;
     });
 
+    _markCurrentDestinationAsRead();
+
     _enforceMessageByteLimit();
 
     // Save to preferences
@@ -304,9 +321,107 @@ class _MessagesTabState extends State<MessagesTab> {
     if (!mounted) return;
   }
 
+  Future<void> _applyPendingDestination({
+    required String type,
+    String? recipientPublicKeyHex,
+  }) async {
+    Contact? recipient;
+    if (recipientPublicKeyHex != null) {
+      final contactsProvider = context.read<ContactsProvider>();
+      recipient = contactsProvider.contacts.where((contact) {
+        return contact.publicKeyHex == recipientPublicKeyHex;
+      }).firstOrNull;
+    }
+
+    await _onRecipientSelected(type, recipient);
+    if (!mounted) return;
+    _focusNode.requestFocus();
+  }
+
+  void _insertReplyMention(String displayName) {
+    final trimmedName = displayName.trim();
+    if (trimmedName.isEmpty) return;
+
+    final mention = '@[$trimmedName] ';
+    final value = _textController.value;
+    final selection = value.selection;
+    final hasSelection =
+        selection.isValid &&
+        selection.start >= 0 &&
+        selection.end >= selection.start;
+
+    final start = hasSelection ? selection.start : value.text.length;
+    final end = hasSelection ? selection.end : value.text.length;
+    final nextText = value.text.replaceRange(start, end, mention);
+    final nextOffset = start + mention.length;
+
+    _textController.value = value.copyWith(
+      text: nextText,
+      selection: TextSelection.collapsed(offset: nextOffset),
+      composing: TextRange.empty,
+    );
+    _enforceMessageByteLimit();
+  }
+
+  Future<void> _replyToMessage(Message message) async {
+    final l10n = AppLocalizations.of(context)!;
+    final contactsProvider = context.read<ContactsProvider>();
+    Contact? senderContact;
+
+    String destinationType;
+    Contact? recipient;
+
+    if (message.isChannelMessage) {
+      final channelIdx = message.channelIdx ?? 0;
+      destinationType = MessageDestinationPreferences.destinationTypeChannel;
+
+      if (channelIdx != 0) {
+        recipient = contactsProvider.channels.where((contact) {
+          return contact.publicKey.length > 1 &&
+              contact.publicKey[1] == channelIdx;
+        }).firstOrNull;
+
+        if (recipient == null) {
+          ToastLogger.error(context, l10n.cannotReplyContactNotFound);
+          return;
+        }
+      }
+
+      final senderPrefix = message.senderPublicKeyPrefix;
+      if (senderPrefix != null && senderPrefix.length >= 6) {
+        senderContact = contactsProvider.findContactByPrefix(senderPrefix);
+      }
+    } else {
+      final senderPrefix = message.senderPublicKeyPrefix;
+      if (senderPrefix == null || senderPrefix.length < 6) {
+        ToastLogger.error(context, l10n.cannotReplySenderMissing);
+        return;
+      }
+
+      recipient = contactsProvider.findContactByPrefix(senderPrefix);
+      if (recipient == null) {
+        ToastLogger.error(context, l10n.cannotReplyContactNotFound);
+        return;
+      }
+
+      destinationType = recipient.isRoom
+          ? MessageDestinationPreferences.destinationTypeRoom
+          : MessageDestinationPreferences.destinationTypeContact;
+    }
+
+    await _onRecipientSelected(destinationType, recipient);
+    if (!mounted) return;
+    if (message.isChannelMessage && senderContact != null) {
+      _insertReplyMention(senderContact.displayName);
+    }
+    _focusNode.requestFocus();
+  }
+
   /// Get icon for current destination type
   IconData _getDestinationIcon() {
-    if (_destinationType ==
+    if (_destinationType == MessageDestinationPreferences.destinationTypeAll) {
+      return Icons.all_inbox;
+    } else if (_destinationType ==
         MessageDestinationPreferences.destinationTypeChannel) {
       return Icons.public;
     } else if (_destinationType ==
@@ -318,6 +433,9 @@ class _MessagesTabState extends State<MessagesTab> {
   }
 
   String _getDestinationLabel() {
+    if (_destinationType == MessageDestinationPreferences.destinationTypeAll) {
+      return AppLocalizations.of(context)!.showAll;
+    }
     if (_destinationType ==
             MessageDestinationPreferences.destinationTypeChannel &&
         _selectedRecipient != null) {
@@ -343,6 +461,12 @@ class _MessagesTabState extends State<MessagesTab> {
       return;
     }
 
+    if (_destinationType == MessageDestinationPreferences.destinationTypeAll) {
+      if (!mounted) return;
+      ToastLogger.error(context, 'Select a channel, contact, or room first');
+      return;
+    }
+
     try {
       // Check destination type and send accordingly
       if (_destinationType ==
@@ -375,6 +499,7 @@ class _MessagesTabState extends State<MessagesTab> {
 
       _textController.clear();
       _focusNode.unfocus();
+      _markCurrentDestinationAsRead();
 
       if (!mounted) return;
     } catch (e) {
@@ -692,7 +817,7 @@ class _MessagesTabState extends State<MessagesTab> {
   Future<void> _startVoiceRecording() async {
     if (_isSendingVoice || _isRecording) return;
     debugPrint('🎙️ [Voice] _startVoiceRecording called');
-    // Read fresh bitrate preference so settings changes apply immediately.
+    // Read fresh voice preferences so settings changes apply immediately.
     final selectedBitrate = await VoiceBitratePreferences.getBitrate();
     if (mounted) {
       setState(() {
@@ -731,11 +856,12 @@ class _MessagesTabState extends State<MessagesTab> {
       _selectedVoiceBitrate,
     );
     final packetDuration = Duration(
-      milliseconds: codec2ModeFor(_activeVoiceMode!).packetDurationMs,
+      milliseconds: _activeVoiceMode!.packetDurationMs,
     );
+    final maxVoicePackets = _maxVoicePacketsForMode(_activeVoiceMode!);
 
     debugPrint(
-      '🎙️ [Voice] session=$_currentVoiceSessionId mode=$_activeVoiceMode chunkDuration=${packetDuration.inMilliseconds}ms',
+      '🎙️ [Voice] session=$_currentVoiceSessionId mode=$_activeVoiceMode chunkDuration=${packetDuration.inMilliseconds}ms maxPackets=$maxVoicePackets',
     );
 
     _recordedChunks.clear();
@@ -744,9 +870,13 @@ class _MessagesTabState extends State<MessagesTab> {
     try {
       final stream = _voiceRecorder.startCapture(
         chunkDuration: packetDuration,
+        sampleRateHz: _activeVoiceMode!.sampleRateHz,
         enableBandPassFilter: appProvider.isVoiceBandPassFilterEnabled,
         enableCompressor: appProvider.isVoiceCompressorEnabled,
         enableLimiter: appProvider.isVoiceLimiterEnabled,
+        enableAutoGain: appProvider.isVoiceAutoGainEnabled,
+        enableEchoCancellation: appProvider.isVoiceEchoCancellationEnabled,
+        enableNoiseSuppression: appProvider.isVoiceNoiseSuppressionEnabled,
       );
       debugPrint('🎙️ [Voice] capture started, listening for chunks...');
       _voiceStreamSub = stream.listen(
@@ -757,7 +887,7 @@ class _MessagesTabState extends State<MessagesTab> {
             '🎙️ [Voice] chunk #${_recordedChunks.length} received: ${pcmChunk.length} samples',
           );
           setState(() {});
-          if (_recordedChunks.length >= _maxVoicePackets) {
+          if (_recordedChunks.length >= maxVoicePackets) {
             debugPrint('🎙️ [Voice] max packets reached, stopping');
             _stopAndSendVoice();
           }
@@ -774,6 +904,12 @@ class _MessagesTabState extends State<MessagesTab> {
     }
   }
 
+  int _maxVoicePacketsForMode(VoicePacketMode mode) {
+    final packets =
+        _maxVoiceRecordingDuration.inMilliseconds ~/ mode.packetDurationMs;
+    return packets < 1 ? 1 : packets;
+  }
+
   Future<void> _stopAndSendVoice() async {
     if (!_isRecording) return;
     final trimSilenceEnabled = context
@@ -788,9 +924,14 @@ class _MessagesTabState extends State<MessagesTab> {
     await _voiceRecorder.stopCapture();
 
     final rawChunks = List<Int16List>.from(_recordedChunks);
-    final chunks = trimSilenceEnabled ? _trimSilence(rawChunks) : rawChunks;
+    final trimmedChunks = trimSilenceEnabled
+        ? _trimSilence(rawChunks)
+        : rawChunks;
     final sessionId = _currentVoiceSessionId;
     final mode = _activeVoiceMode;
+    final chunks = mode == null
+        ? trimmedChunks
+        : _prepareChunksForSending(trimmedChunks, mode);
     _recordedChunks.clear();
 
     debugPrint(
@@ -979,6 +1120,13 @@ class _MessagesTabState extends State<MessagesTab> {
     messagesProvider.markMessageSent(msgId, 0, 0);
   }
 
+  List<Int16List> _prepareChunksForSending(
+    List<Int16List> chunks,
+    VoicePacketMode mode,
+  ) {
+    return chunks;
+  }
+
   List<Int16List> _trimSilence(List<Int16List> chunks) {
     if (chunks.isEmpty) return chunks;
 
@@ -1008,16 +1156,28 @@ class _MessagesTabState extends State<MessagesTab> {
   bool _isSilentChunk(Int16List chunk) {
     if (chunk.isEmpty) return true;
 
+    final rms = _chunkRms(chunk);
+    final peak = _chunkPeak(chunk);
+    return rms < _silenceRmsThreshold && peak < _silencePeakThreshold;
+  }
+
+  double _chunkRms(Int16List chunk) {
     var sumSquares = 0.0;
+    for (final sample in chunk) {
+      sumSquares += sample * sample;
+    }
+    return math.sqrt(sumSquares / chunk.length);
+  }
+
+  int _chunkPeak(Int16List chunk) {
     var peak = 0;
     for (final sample in chunk) {
       final absSample = sample.abs();
-      if (absSample > peak) peak = absSample;
-      sumSquares += sample * sample;
+      if (absSample > peak) {
+        peak = absSample;
+      }
     }
-
-    final rms = math.sqrt(sumSquares / chunk.length);
-    return rms < _silenceRmsThreshold && peak < _silencePeakThreshold;
+    return peak;
   }
 
   bool _isPublicChannelSelected() {
@@ -1107,6 +1267,15 @@ class _MessagesTabState extends State<MessagesTab> {
           child: Column(
             mainAxisSize: MainAxisSize.min,
             children: [
+              ListTile(
+                leading: const Icon(Icons.search),
+                title: const Text('Search messages'),
+                onTap: () async {
+                  await _runAfterSheetDismissal(sheetContext, () async {
+                    _showFilteredMessageSearch();
+                  });
+                },
+              ),
               ListTile(
                 leading: const Icon(Icons.add_location_alt),
                 title: Text(AppLocalizations.of(context)!.sendSarMarker),
@@ -1174,6 +1343,116 @@ class _MessagesTabState extends State<MessagesTab> {
     );
   }
 
+  void _showFilteredMessageSearch() {
+    final messagesProvider = context.read<MessagesProvider>();
+    final scopedMessages = _getFilteredMessages(messagesProvider);
+    final searchController = TextEditingController();
+
+    showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      backgroundColor: Theme.of(context).colorScheme.surface,
+      shape: const RoundedRectangleBorder(
+        borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
+      ),
+      builder: (sheetContext) {
+        return StatefulBuilder(
+          builder: (context, setModalState) {
+            final query = searchController.text.trim().toLowerCase();
+            final matches = query.isEmpty
+                ? scopedMessages
+                : scopedMessages.where((message) {
+                    return message.text.toLowerCase().contains(query) ||
+                        (message.senderName?.toLowerCase().contains(query) ??
+                            false);
+                  }).toList();
+
+            return SafeArea(
+              child: Padding(
+                padding: EdgeInsets.only(
+                  bottom: MediaQuery.of(sheetContext).viewInsets.bottom,
+                ),
+                child: SizedBox(
+                  height: MediaQuery.of(sheetContext).size.height * 0.72,
+                  child: Column(
+                    children: [
+                      Padding(
+                        padding: const EdgeInsets.fromLTRB(16, 16, 16, 12),
+                        child: TextField(
+                          controller: searchController,
+                          autofocus: true,
+                          decoration: InputDecoration(
+                            hintText: 'Search in current filter',
+                            prefixIcon: const Icon(Icons.search),
+                            suffixIcon: searchController.text.isEmpty
+                                ? null
+                                : IconButton(
+                                    icon: const Icon(Icons.clear),
+                                    onPressed: () {
+                                      searchController.clear();
+                                      setModalState(() {});
+                                    },
+                                  ),
+                            border: OutlineInputBorder(
+                              borderRadius: BorderRadius.circular(14),
+                            ),
+                          ),
+                          onChanged: (_) => setModalState(() {}),
+                        ),
+                      ),
+                      Expanded(
+                        child: matches.isEmpty
+                            ? Center(
+                                child: Text(
+                                  query.isEmpty
+                                      ? 'No messages in this filter'
+                                      : 'No matches in this filter',
+                                ),
+                              )
+                            : ListView.separated(
+                                itemCount: matches.length,
+                                separatorBuilder: (_, _) =>
+                                    const Divider(height: 1),
+                                itemBuilder: (context, index) {
+                                  final message = matches[index];
+                                  final title =
+                                      message.senderName?.trim().isNotEmpty ==
+                                          true
+                                      ? message.senderName!
+                                      : message.isSentMessage
+                                      ? 'You'
+                                      : _getDestinationLabel();
+
+                                  return ListTile(
+                                    title: Text(
+                                      title,
+                                      maxLines: 1,
+                                      overflow: TextOverflow.ellipsis,
+                                    ),
+                                    subtitle: Text(
+                                      message.text,
+                                      maxLines: 2,
+                                      overflow: TextOverflow.ellipsis,
+                                    ),
+                                    onTap: () {
+                                      Navigator.pop(sheetContext);
+                                      _scrollToMessage(message.id);
+                                    },
+                                  );
+                                },
+                              ),
+                      ),
+                    ],
+                  ),
+                ),
+              ),
+            );
+          },
+        );
+      },
+    ).whenComplete(searchController.dispose);
+  }
+
   Widget _buildDestinationAvatar(BuildContext context) {
     final recipient = _selectedRecipient;
     if (recipient != null) {
@@ -1432,6 +1711,13 @@ class _MessagesTabState extends State<MessagesTab> {
     }
   }
 
+  void _markCurrentDestinationAsRead() {
+    context.read<MessagesProvider>().markDestinationAsRead(
+      destinationType: _destinationType,
+      contact: _selectedRecipient,
+    );
+  }
+
   List<Message> _getFilteredMessages(MessagesProvider messagesProvider) {
     // Get all recent messages
     final allMessages = messagesProvider.getRecentMessages(count: 100);
@@ -1439,17 +1725,18 @@ class _MessagesTabState extends State<MessagesTab> {
     List<Message> filteredMessages;
 
     // If channel destination is selected, filter by selected channel.
-    if (_destinationType ==
+    if (_destinationType == MessageDestinationPreferences.destinationTypeAll) {
+      filteredMessages = allMessages;
+    } else if (_destinationType ==
         MessageDestinationPreferences.destinationTypeChannel) {
       final selectedChannelIdx = _selectedRecipient?.publicKey[1] ?? 0;
-      if (selectedChannelIdx == 0) {
-        // Public channel view keeps showing all messages (current app behavior).
-        filteredMessages = allMessages;
-      } else {
-        filteredMessages = allMessages
-            .where((message) => message.channelIdx == selectedChannelIdx)
-            .toList();
-      }
+      filteredMessages = allMessages
+          .where(
+            (message) =>
+                message.isChannelMessage &&
+                (message.channelIdx ?? 0) == selectedChannelIdx,
+          )
+          .toList();
     }
     // If a contact or room is selected, filter by recipient/sender prefixes.
     else if ((_destinationType ==
@@ -1458,6 +1745,10 @@ class _MessagesTabState extends State<MessagesTab> {
                 MessageDestinationPreferences.destinationTypeRoom) &&
         _selectedRecipient != null) {
       filteredMessages = allMessages.where((message) {
+        if (!message.isContactMessage) {
+          return false;
+        }
+
         // Include messages sent TO this recipient
         if (message.recipientPublicKey != null &&
             message.recipientPublicKey!.length >= 6 &&
@@ -1538,6 +1829,7 @@ class _MessagesTabState extends State<MessagesTab> {
                   onRefresh: _handleRefresh,
                   onNavigateToMap: widget.onNavigateToMap,
                   onMessageTap: _handleMessageTap,
+                  onReplyToMessage: _replyToMessage,
                 ),
               ),
               Positioned(

lib/screens/packet_log_screen.dart

@@ -8,6 +8,8 @@ import 'package:meshcore_client/meshcore_client.dart';
 import '../l10n/app_localizations.dart';
 import '../providers/connection_provider.dart';
 import '../providers/contacts_provider.dart';
+import '../services/mesh_map_nodes_service.dart';
+import '../services/route_hash_preferences.dart';
 import '../utils/log_rx_route_decoder.dart';
 
 class PacketLogScreen extends StatefulWidget {
@@ -460,26 +462,6 @@ class _PacketLogCard extends StatelessWidget {
     final isRx = log.direction == PacketDirection.rx;
     final directionColor = isRx ? Colors.green : Colors.blue;
     final rxInfo = log.logRxDataInfo;
-    final contacts = context.watch<ContactsProvider>().contacts;
-    final connectionProvider = context.watch<ConnectionProvider>();
-    final decodedRoute = LogRxRouteDecoder.decode(log.rawData);
-    final ownPublicKey = connectionProvider.deviceInfo.publicKey;
-    final ownName =
-        connectionProvider.deviceInfo.selfName ??
-        connectionProvider.deviceInfo.displayName;
-    final resolvedPath = decodedRoute?.pathHashes
-        .map(
-          (hash) => LogRxRouteDecoder.resolveHash(
-            hash,
-            contacts: contacts,
-            ownPublicKey: ownPublicKey,
-            ownName: ownName,
-          ),
-        )
-        .toList();
-    final originalSender = resolvedPath != null && resolvedPath.isNotEmpty
-        ? resolvedPath.first
-        : null;
 
     return Card(
       margin: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
@@ -604,13 +586,9 @@ class _PacketLogCard extends StatelessWidget {
                     ),
                   ),
                 ],
-                if (isRx && decodedRoute != null) ...[
+                if (isRx) ...[
                   const SizedBox(height: 12),
-                  _RouteSection(
-                    route: decodedRoute,
-                    path: resolvedPath ?? const [],
-                    originalSender: originalSender,
-                  ),
+                  _DecodedRouteSection(log: log),
                 ],
                 const SizedBox(height: 12),
                 Container(
@@ -755,6 +733,97 @@ class _PacketLogCard extends StatelessWidget {
   }
 }
 
+class _DecodedRouteSection extends StatelessWidget {
+  final BlePacketLog log;
+
+  const _DecodedRouteSection({required this.log});
+
+  @override
+  Widget build(BuildContext context) {
+    final contacts = context.watch<ContactsProvider>().contacts;
+    final connectionProvider = context.watch<ConnectionProvider>();
+    final ownPublicKey = connectionProvider.deviceInfo.publicKey;
+    final ownName =
+        connectionProvider.deviceInfo.selfName ??
+        connectionProvider.deviceInfo.displayName;
+
+    return FutureBuilder<List<dynamic>>(
+      future: Future.wait<dynamic>([
+        RouteHashPreferences.getHashSize(),
+        MeshMapNodesService.loadCachedNodes(
+          cacheTtl: MeshMapNodesService.traceCacheTtl,
+        ),
+      ]),
+      builder: (context, snapshot) {
+        final decodedRoute = LogRxRouteDecoder.decode(
+          log.rawData,
+          preferredHashSize: snapshot.data?.first as int?,
+        );
+        if (decodedRoute == null) {
+          return const SizedBox.shrink();
+        }
+
+        final cachedNodes = snapshot.hasData
+            ? snapshot.data![1] as List<MeshMapNode>
+            : const <MeshMapNode>[];
+        final resolvedPath = decodedRoute.hopHashes
+            .map(
+              (hashHex) => _resolveHashWithFallback(
+                hashHex,
+                contacts: contacts,
+                cachedNodes: cachedNodes,
+                ownPublicKey: ownPublicKey,
+                ownName: ownName,
+              ),
+            )
+            .toList();
+        final originalSender = resolvedPath.isEmpty ? null : resolvedPath.first;
+
+        return _RouteSection(
+          route: decodedRoute,
+          path: resolvedPath,
+          originalSender: originalSender,
+        );
+      },
+    );
+  }
+
+  ResolvedNodeHash _resolveHashWithFallback(
+    String hashHex, {
+    required List<Contact> contacts,
+    required List<MeshMapNode> cachedNodes,
+    required Uint8List? ownPublicKey,
+    required String? ownName,
+  }) {
+    final localResolved = LogRxRouteDecoder.resolveHash(
+      hashHex,
+      contacts: contacts,
+      ownPublicKey: ownPublicKey,
+      ownName: ownName,
+    );
+    if (localResolved.matchCount > 0 || localResolved.isOwnNode) {
+      return localResolved;
+    }
+
+    final normalizedHashHex = hashHex.toLowerCase();
+    final matches = cachedNodes
+        .where((node) => node.publicKey.startsWith(normalizedHashHex))
+        .toList();
+    if (matches.isEmpty) {
+      return localResolved;
+    }
+
+    matches.sort((a, b) => b.updatedAtMs.compareTo(a.updatedAtMs));
+    return ResolvedNodeHash(
+      hashHex: normalizedHashHex,
+      label: matches.first.name,
+      isOwnNode: false,
+      isUniqueMatch: matches.length == 1,
+      matchCount: matches.length,
+    );
+  }
+}
+
 class _RouteSection extends StatelessWidget {
   final DecodedLogRxRoute route;
   final List<ResolvedNodeHash> path;
@@ -802,7 +871,13 @@ class _RouteSection extends StatelessWidget {
               _FactCard(
                 icon: Icons.hub,
                 label: 'Hops',
-                value: '${route.pathHashes.length}',
+                value: '${route.hopCount}',
+              ),
+              _FactCard(
+                icon: Icons.tag,
+                label: 'Hash size',
+                value:
+                    '${route.hashSize} byte${route.hashSize == 1 ? '' : 's'}',
               ),
               if (originalSender != null)
                 _FactCard(

lib/screens/repeaters_map_screen.dart

@@ -0,0 +1,775 @@
+import 'dart:typed_data';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_map/flutter_map.dart' as flutter_map;
+import 'package:geolocator/geolocator.dart';
+import 'package:latlong2/latlong.dart';
+import 'package:provider/provider.dart';
+
+import '../models/contact.dart';
+import '../providers/connection_provider.dart';
+import '../providers/contacts_provider.dart';
+import '../services/mesh_map_nodes_service.dart';
+
+class RepeatersMapScreen extends StatefulWidget {
+  const RepeatersMapScreen({super.key});
+
+  @override
+  State<RepeatersMapScreen> createState() => _RepeatersMapScreenState();
+}
+
+class _RepeatersMapScreenState extends State<RepeatersMapScreen> {
+  static const LatLng _fallbackCenter = LatLng(46.0569, 14.5058);
+  static const double _fallbackZoom = 7;
+  static const double _myLocationZoom = 14;
+
+  final flutter_map.MapController _mapController = flutter_map.MapController();
+
+  List<MeshMapNode> _onlineRepeaters = const [];
+  bool _isLoading = true;
+  bool _didFitCamera = false;
+  String? _error;
+  double _currentZoom = _fallbackZoom;
+  LatLng? _myLocation;
+  final Set<String> _addingRepeaters = <String>{};
+
+  @override
+  void initState() {
+    super.initState();
+    _loadRepeaters();
+  }
+
+  Future<void> _loadRepeaters({bool forceRefresh = false}) async {
+    setState(() {
+      _isLoading = true;
+      _error = null;
+      if (forceRefresh) {
+        _didFitCamera = false;
+      }
+    });
+
+    try {
+      final nodes = await MeshMapNodesService.fetchNodes(
+        forceRefresh: forceRefresh,
+      );
+      final repeaters = nodes.where(MeshMapNodesService.isRepeater).toList();
+
+      if (!mounted) return;
+      setState(() {
+        _onlineRepeaters = repeaters;
+        _isLoading = false;
+      });
+      _refreshMyLocation();
+    } catch (error) {
+      final cached = await MeshMapNodesService.loadCachedNodes();
+      final repeaters = cached.where(MeshMapNodesService.isRepeater).toList();
+
+      if (!mounted) return;
+      setState(() {
+        _onlineRepeaters = repeaters;
+        _isLoading = false;
+        _error = repeaters.isEmpty
+            ? 'Unable to load repeaters right now.'
+            : 'Showing cached repeaters. Pull to retry.';
+      });
+      _refreshMyLocation();
+    }
+  }
+
+  List<_MapRepeater> _mergeRepeaters({
+    required List<MeshMapNode> onlineNodes,
+    required List<Contact> contactRepeaters,
+  }) {
+    final merged = <String, _MapRepeater>{};
+
+    for (final node in onlineNodes) {
+      merged[node.publicKey] = _MapRepeater(
+        publicKey: node.publicKey,
+        name: node.name,
+        latitude: node.latitude,
+        longitude: node.longitude,
+        isFromContacts: false,
+        isFromOnline: true,
+      );
+    }
+
+    for (final contact in contactRepeaters) {
+      final location = contact.displayLocation;
+      if (location == null) {
+        continue;
+      }
+
+      final key = contact.publicKeyHex.toLowerCase();
+      final existing = merged[key];
+      merged[key] = _MapRepeater(
+        publicKey: key,
+        name: contact.displayName.isNotEmpty
+            ? contact.displayName
+            : existing?.name ?? 'Unknown repeater',
+        latitude: existing?.latitude ?? location.latitude,
+        longitude: existing?.longitude ?? location.longitude,
+        isFromContacts: true,
+        isFromOnline: existing?.isFromOnline ?? false,
+      );
+    }
+
+    final repeaters = merged.values.toList()
+      ..sort((a, b) => a.name.toLowerCase().compareTo(b.name.toLowerCase()));
+    return repeaters;
+  }
+
+  Future<void> _refreshMyLocation() async {
+    try {
+      final position = await Geolocator.getCurrentPosition(
+        locationSettings: const LocationSettings(
+          accuracy: LocationAccuracy.best,
+          distanceFilter: 0,
+        ),
+      );
+      if (!mounted) return;
+      setState(() {
+        _myLocation = LatLng(position.latitude, position.longitude);
+      });
+    } catch (_) {
+      // Best effort only.
+    }
+  }
+
+  void _fitCameraIfNeeded(List<_MapRepeater> repeaters) {
+    if (_didFitCamera || repeaters.isEmpty || !mounted) {
+      return;
+    }
+
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted || _didFitCamera || repeaters.isEmpty) {
+        return;
+      }
+
+      if (repeaters.length == 1) {
+        final repeater = repeaters.first;
+        _mapController.move(LatLng(repeater.latitude, repeater.longitude), 13);
+        _currentZoom = 13;
+      } else {
+        final bounds = flutter_map.LatLngBounds.fromPoints(
+          repeaters
+              .map((node) => LatLng(node.latitude, node.longitude))
+              .toList(),
+        );
+        _mapController.fitCamera(
+          flutter_map.CameraFit.bounds(
+            bounds: bounds,
+            padding: const EdgeInsets.all(48),
+          ),
+        );
+      }
+
+      _didFitCamera = true;
+    });
+  }
+
+  void _showRepeaterDetails(_MapRepeater repeater) {
+    final isAdding = _addingRepeaters.contains(repeater.publicKey);
+    final canAdd = !repeater.isFromContacts;
+    final isConnected = context
+        .read<ConnectionProvider>()
+        .deviceInfo
+        .isConnected;
+
+    showModalBottomSheet<void>(
+      context: context,
+      showDragHandle: true,
+      builder: (context) => SafeArea(
+        child: Padding(
+          padding: const EdgeInsets.fromLTRB(20, 0, 20, 24),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Text(
+                repeater.name,
+                style: Theme.of(
+                  context,
+                ).textTheme.titleLarge?.copyWith(fontWeight: FontWeight.w700),
+              ),
+              const SizedBox(height: 12),
+              _InfoLine(
+                label: 'Public key',
+                value: repeater.publicKey,
+                monospace: true,
+              ),
+              _InfoLine(
+                label: 'Coordinates',
+                value:
+                    '${repeater.latitude.toStringAsFixed(5)}, ${repeater.longitude.toStringAsFixed(5)}',
+              ),
+              _InfoLine(label: 'Source', value: repeater.sourceLabel),
+              const SizedBox(height: 12),
+              if (canAdd)
+                SizedBox(
+                  width: double.infinity,
+                  child: FilledButton.icon(
+                    onPressed: !isConnected || isAdding
+                        ? null
+                        : () async {
+                            Navigator.of(context).pop();
+                            await _addRepeaterToContacts(repeater);
+                          },
+                    icon: isAdding
+                        ? const SizedBox(
+                            width: 16,
+                            height: 16,
+                            child: CircularProgressIndicator(strokeWidth: 2),
+                          )
+                        : const Icon(Icons.person_add_alt_1),
+                    label: Text(
+                      !isConnected
+                          ? 'Connect device to add'
+                          : 'Add to contacts',
+                    ),
+                  ),
+                )
+              else
+                SizedBox(
+                  width: double.infinity,
+                  child: FilledButton.icon(
+                    onPressed: null,
+                    icon: const Icon(Icons.check_circle),
+                    label: const Text('Already in contacts'),
+                  ),
+                ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Future<void> _addRepeaterToContacts(_MapRepeater repeater) async {
+    if (_addingRepeaters.contains(repeater.publicKey)) {
+      return;
+    }
+
+    final connectionProvider = context.read<ConnectionProvider>();
+    if (!connectionProvider.deviceInfo.isConnected) {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text('Connect to a device before adding contacts'),
+        ),
+      );
+      return;
+    }
+
+    setState(() {
+      _addingRepeaters.add(repeater.publicKey);
+    });
+
+    try {
+      await connectionProvider.getContact(_hexToBytes(repeater.publicKey));
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('${repeater.name} added to contacts')),
+      );
+    } catch (error) {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('Failed to add ${repeater.name}: $error')),
+      );
+    } finally {
+      if (mounted) {
+        setState(() {
+          _addingRepeaters.remove(repeater.publicKey);
+        });
+      }
+    }
+  }
+
+  Uint8List _hexToBytes(String hex) {
+    final normalized = hex.replaceAll(':', '').trim().toLowerCase();
+    return Uint8List.fromList(
+      List<int>.generate(
+        normalized.length ~/ 2,
+        (index) => int.parse(
+          normalized.substring(index * 2, index * 2 + 2),
+          radix: 16,
+        ),
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final contactsProvider = context.watch<ContactsProvider>();
+    final repeaters = _mergeRepeaters(
+      onlineNodes: _onlineRepeaters,
+      contactRepeaters: contactsProvider.repeaters,
+    );
+    _fitCameraIfNeeded(repeaters);
+    final clusters = _buildClusters(repeaters);
+    final markers = clusters.map((cluster) {
+      final markerColor = switch (cluster.status) {
+        _ClusterStatus.contactsOnly => const Color(0xFF7C3AED),
+        _ClusterStatus.onlineOnly => const Color(0xFFE8681D),
+        _ClusterStatus.both => const Color(0xFF1B8F4F),
+        _ClusterStatus.mixed => const Color(0xFF2563EB),
+      };
+
+      if (cluster.members.length == 1) {
+        final repeater = cluster.members.first;
+        return flutter_map.Marker(
+          point: cluster.center,
+          width: 80,
+          height: 100,
+          child: GestureDetector(
+            onTap: () => _showRepeaterDetails(repeater),
+            child: _RepeaterMarker(color: markerColor, label: repeater.name),
+          ),
+        );
+      }
+
+      return flutter_map.Marker(
+        point: cluster.center,
+        width: 48,
+        height: 48,
+        child: GestureDetector(
+          onTap: () => _zoomToCluster(cluster),
+          child: _ClusterMarker(
+            color: markerColor,
+            count: cluster.members.length,
+          ),
+        ),
+      );
+    }).toList();
+    final allMarkers = <flutter_map.Marker>[
+      ...markers,
+      if (_myLocation != null)
+        flutter_map.Marker(
+          point: _myLocation!,
+          width: 24,
+          height: 24,
+          child: Container(
+            decoration: BoxDecoration(
+              color: const Color(0xFF2563EB),
+              shape: BoxShape.circle,
+              border: Border.all(color: Colors.white, width: 3),
+              boxShadow: [
+                BoxShadow(
+                  color: Colors.black.withValues(alpha: 0.18),
+                  blurRadius: 12,
+                  offset: const Offset(0, 4),
+                ),
+              ],
+            ),
+          ),
+        ),
+    ];
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Repeaters Map'),
+        actions: [
+          IconButton(
+            onPressed: _isLoading
+                ? null
+                : () => _loadRepeaters(forceRefresh: true),
+            icon: const Icon(Icons.refresh),
+            tooltip: 'Refresh',
+          ),
+        ],
+      ),
+      body: Stack(
+        children: [
+          flutter_map.FlutterMap(
+            mapController: _mapController,
+            options: flutter_map.MapOptions(
+              initialCenter: _fallbackCenter,
+              initialZoom: _fallbackZoom,
+              onPositionChanged: (camera, hasGesture) {
+                final nextZoom = camera.zoom;
+                if (nextZoom != _currentZoom && mounted) {
+                  setState(() {
+                    _currentZoom = nextZoom;
+                  });
+                }
+              },
+            ),
+            children: [
+              flutter_map.TileLayer(
+                urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
+                userAgentPackageName: 'app.meshcore.sar',
+              ),
+              flutter_map.MarkerLayer(markers: allMarkers),
+            ],
+          ),
+          if (_error != null)
+            Positioned(
+              top: 16,
+              left: 16,
+              right: 16,
+              child: Material(
+                elevation: 2,
+                borderRadius: BorderRadius.circular(14),
+                color: Theme.of(context).colorScheme.surface,
+                child: Padding(
+                  padding: const EdgeInsets.symmetric(
+                    horizontal: 16,
+                    vertical: 12,
+                  ),
+                  child: Text(_error!),
+                ),
+              ),
+            ),
+          if (_isLoading) const Center(child: CircularProgressIndicator()),
+          if (!_isLoading && repeaters.isEmpty)
+            Center(
+              child: Padding(
+                padding: const EdgeInsets.all(24),
+                child: Text(
+                  _error ?? 'No repeaters available.',
+                  textAlign: TextAlign.center,
+                ),
+              ),
+            ),
+          if (repeaters.isNotEmpty)
+            Positioned(
+              left: 16,
+              top: _error == null ? 16 : 72,
+              child: Material(
+                elevation: 2,
+                borderRadius: BorderRadius.circular(14),
+                color: Theme.of(context).colorScheme.surface,
+                child: Padding(
+                  padding: const EdgeInsets.symmetric(
+                    horizontal: 14,
+                    vertical: 10,
+                  ),
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    mainAxisSize: MainAxisSize.min,
+                    children: const [
+                      _LegendRow(
+                        color: Color(0xFF7C3AED),
+                        label: 'From contacts',
+                      ),
+                      SizedBox(height: 8),
+                      _LegendRow(
+                        color: Color(0xFFE8681D),
+                        label: 'Online only',
+                      ),
+                      SizedBox(height: 8),
+                      _LegendRow(color: Color(0xFF1B8F4F), label: 'In both'),
+                    ],
+                  ),
+                ),
+              ),
+            ),
+          if (repeaters.isNotEmpty)
+            Positioned(
+              left: 16,
+              right: 16,
+              bottom: 16,
+              child: Material(
+                elevation: 3,
+                borderRadius: BorderRadius.circular(16),
+                color: Theme.of(context).colorScheme.surface,
+                child: Padding(
+                  padding: const EdgeInsets.symmetric(
+                    horizontal: 16,
+                    vertical: 12,
+                  ),
+                  child: Text(
+                    '${repeaters.length} repeaters',
+                    style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                      fontWeight: FontWeight.w700,
+                    ),
+                  ),
+                ),
+              ),
+            ),
+        ],
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: _jumpToMyLocation,
+        tooltip: 'My location',
+        child: const Icon(Icons.my_location),
+      ),
+    );
+  }
+
+  Future<void> _jumpToMyLocation() async {
+    await _refreshMyLocation();
+    final myLocation = _myLocation;
+    if (!mounted || myLocation == null) {
+      return;
+    }
+
+    _mapController.move(myLocation, _myLocationZoom);
+    setState(() {
+      _currentZoom = _myLocationZoom;
+    });
+  }
+
+  List<_RepeaterCluster> _buildClusters(List<_MapRepeater> repeaters) {
+    if (repeaters.isEmpty) {
+      return const [];
+    }
+
+    if (_currentZoom >= 11.5) {
+      return repeaters
+          .map(
+            (repeater) => _RepeaterCluster(
+              members: [repeater],
+              center: LatLng(repeater.latitude, repeater.longitude),
+              status: repeater.clusterStatus,
+            ),
+          )
+          .toList();
+    }
+
+    final cellSize = _gridSizeForZoom(_currentZoom);
+    final buckets = <String, List<_MapRepeater>>{};
+
+    for (final repeater in repeaters) {
+      final latBucket = (repeater.latitude / cellSize).floor();
+      final lonBucket = (repeater.longitude / cellSize).floor();
+      final key = '$latBucket:$lonBucket';
+      buckets.putIfAbsent(key, () => <_MapRepeater>[]).add(repeater);
+    }
+
+    return buckets.values.map((members) {
+      final centerLat =
+          members.map((node) => node.latitude).reduce((a, b) => a + b) /
+          members.length;
+      final centerLon =
+          members.map((node) => node.longitude).reduce((a, b) => a + b) /
+          members.length;
+      final statuses = members.map((node) => node.clusterStatus).toSet();
+      return _RepeaterCluster(
+        members: members,
+        center: LatLng(centerLat, centerLon),
+        status: statuses.length == 1 ? statuses.first : _ClusterStatus.mixed,
+      );
+    }).toList();
+  }
+
+  double _gridSizeForZoom(double zoom) {
+    if (zoom < 5) return 3.0;
+    if (zoom < 7) return 1.5;
+    if (zoom < 9) return 0.7;
+    if (zoom < 10.5) return 0.28;
+    return 0.12;
+  }
+
+  void _zoomToCluster(_RepeaterCluster cluster) {
+    if (cluster.members.isEmpty) {
+      return;
+    }
+
+    final bounds = flutter_map.LatLngBounds.fromPoints(
+      cluster.members
+          .map((node) => LatLng(node.latitude, node.longitude))
+          .toList(),
+    );
+    _mapController.fitCamera(
+      flutter_map.CameraFit.bounds(
+        bounds: bounds,
+        padding: const EdgeInsets.all(64),
+        maxZoom: (_currentZoom + 2).clamp(8, 14),
+      ),
+    );
+  }
+}
+
+class _InfoLine extends StatelessWidget {
+  final String label;
+  final String value;
+  final bool monospace;
+
+  const _InfoLine({
+    required this.label,
+    required this.value,
+    this.monospace = false,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 8),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          SizedBox(
+            width: 92,
+            child: Text(
+              label,
+              style: Theme.of(
+                context,
+              ).textTheme.bodyMedium?.copyWith(fontWeight: FontWeight.w600),
+            ),
+          ),
+          Expanded(
+            child: Text(
+              value,
+              style: monospace
+                  ? const TextStyle(fontFamily: 'monospace')
+                  : null,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _LegendRow extends StatelessWidget {
+  final Color color;
+  final String label;
+
+  const _LegendRow({required this.color, required this.label});
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Container(
+          width: 12,
+          height: 12,
+          decoration: BoxDecoration(color: color, shape: BoxShape.circle),
+        ),
+        const SizedBox(width: 8),
+        Text(label),
+      ],
+    );
+  }
+}
+
+class _RepeaterMarker extends StatelessWidget {
+  final Color color;
+  final String label;
+
+  const _RepeaterMarker({required this.color, required this.label});
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Container(
+          decoration: BoxDecoration(
+            color: color,
+            shape: BoxShape.circle,
+            border: Border.all(color: Colors.white, width: 2),
+            boxShadow: [
+              BoxShadow(
+                color: Colors.black.withValues(alpha: 0.3),
+                blurRadius: 4,
+                offset: const Offset(0, 2),
+              ),
+            ],
+          ),
+          padding: const EdgeInsets.all(6),
+          child: const Icon(Icons.router, color: Colors.white, size: 18),
+        ),
+        const SizedBox(height: 2),
+        Container(
+          constraints: const BoxConstraints(maxWidth: 80),
+          padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 1),
+          decoration: BoxDecoration(
+            color: Colors.black.withValues(alpha: 0.7),
+            borderRadius: BorderRadius.circular(3),
+          ),
+          child: Text(
+            label,
+            style: const TextStyle(
+              color: Colors.white,
+              fontSize: 9,
+              fontWeight: FontWeight.bold,
+            ),
+            overflow: TextOverflow.ellipsis,
+            maxLines: 1,
+            textAlign: TextAlign.center,
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+class _ClusterMarker extends StatelessWidget {
+  final Color color;
+  final int count;
+
+  const _ClusterMarker({required this.color, required this.count});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      decoration: BoxDecoration(
+        color: color,
+        shape: BoxShape.circle,
+        border: Border.all(color: Colors.white, width: 2),
+        boxShadow: [
+          BoxShadow(
+            color: Colors.black.withValues(alpha: 0.22),
+            blurRadius: 10,
+            offset: const Offset(0, 3),
+          ),
+        ],
+      ),
+      alignment: Alignment.center,
+      child: Text(
+        '$count',
+        style: const TextStyle(
+          color: Colors.white,
+          fontWeight: FontWeight.w800,
+          fontSize: 14,
+        ),
+      ),
+    );
+  }
+}
+
+enum _ClusterStatus { contactsOnly, onlineOnly, both, mixed }
+
+class _RepeaterCluster {
+  final List<_MapRepeater> members;
+  final LatLng center;
+  final _ClusterStatus status;
+
+  const _RepeaterCluster({
+    required this.members,
+    required this.center,
+    required this.status,
+  });
+}
+
+class _MapRepeater {
+  final String publicKey;
+  final String name;
+  final double latitude;
+  final double longitude;
+  final bool isFromContacts;
+  final bool isFromOnline;
+
+  const _MapRepeater({
+    required this.publicKey,
+    required this.name,
+    required this.latitude,
+    required this.longitude,
+    required this.isFromContacts,
+    required this.isFromOnline,
+  });
+
+  String get sourceLabel {
+    if (isFromContacts && isFromOnline) return 'Contacts and online';
+    if (isFromContacts) return 'Contacts';
+    return 'Online';
+  }
+
+  _ClusterStatus get clusterStatus {
+    if (isFromContacts && isFromOnline) return _ClusterStatus.both;
+    if (isFromContacts) return _ClusterStatus.contactsOnly;
+    return _ClusterStatus.onlineOnly;
+  }
+}

lib/screens/sensors_tab.dart

@@ -371,6 +371,7 @@ class _SensorCard extends StatelessWidget {
     final l10n = AppLocalizations.of(context)!;
     final telemetry = contact?.telemetry;
     final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
     final metrics = contact == null || telemetry == null
         ? const <_MetricCardData>[]
         : _buildMetricCards(l10n, telemetry, contact!);
@@ -378,16 +379,23 @@ class _SensorCard extends StatelessWidget {
     return Container(
       margin: const EdgeInsets.only(bottom: 16),
       decoration: BoxDecoration(
-        color: theme.colorScheme.surface,
         borderRadius: BorderRadius.circular(28),
+        gradient: LinearGradient(
+          begin: Alignment.topLeft,
+          end: Alignment.bottomRight,
+          colors: [
+            colorScheme.surfaceContainerLow,
+            colorScheme.surfaceContainerHighest.withValues(alpha: 0.9),
+          ],
+        ),
         border: Border.all(
-          color: theme.colorScheme.outline.withValues(alpha: 0.14),
+          color: colorScheme.outlineVariant.withValues(alpha: 0.35),
         ),
         boxShadow: [
           BoxShadow(
-            color: Colors.black.withValues(alpha: 0.04),
-            blurRadius: 18,
-            offset: const Offset(0, 8),
+            color: Colors.black.withValues(alpha: 0.045),
+            blurRadius: 12,
+            offset: const Offset(0, 4),
           ),
         ],
       ),

lib/screens/settings_screen.dart

@@ -1,5 +1,6 @@
-import 'dart:io' show Platform;
 import 'dart:typed_data';
+import 'package:flutter/foundation.dart'
+    show TargetPlatform, defaultTargetPlatform, kIsWeb;
 import 'package:flutter/material.dart';
 import 'package:flutter_avif/flutter_avif.dart';
 import 'package:image_picker/image_picker.dart';
@@ -15,12 +16,13 @@ import '../providers/app_provider.dart';
 import '../providers/connection_provider.dart';
 import '../services/location_tracking_service.dart';
 import '../services/locale_preferences.dart';
+import '../services/mesh_map_nodes_service.dart';
 import '../services/update_checker_service.dart';
-import '../services/voice_codec_service.dart';
 import '../services/voice_bitrate_preferences.dart';
 import '../services/image_preferences.dart';
 import '../services/route_hash_preferences.dart';
 import '../services/image_codec_service.dart';
+import '../services/developer_mode_service.dart';
 import '../utils/sample_data_generator.dart';
 import '../utils/image_message_parser.dart';
 import '../utils/voice_message_parser.dart';
@@ -70,6 +72,10 @@ class _SettingsScreenState extends State<SettingsScreen> {
   bool _fastLocationUpdatesEnabled = false;
   double _fastLocationMovementThresholdMeters = 10.0;
   int _fastLocationActiveCadenceSeconds = 10;
+  bool _isDeveloperModeEnabled = false;
+  DateTime? _onlineTraceCacheUpdatedAt;
+  bool _isClearingOnlineTraceCache = false;
+  int _versionTapCount = 0;
   final ImagePicker _imagePicker = ImagePicker();
   final LocationTrackingService _locationService = LocationTrackingService();
 
@@ -81,10 +87,12 @@ class _SettingsScreenState extends State<SettingsScreen> {
     _loadPackageInfo();
     _initializeLocationService();
     _loadRxTxPreference();
-    _loadVoiceBitratePreference();
+    _loadVoicePreferences();
     _loadRouteHashSizePreference();
     _loadImagePreferences();
     _loadFastLocationSettings();
+    _loadDeveloperMode();
+    _loadOnlineTraceCacheStatus();
   }
 
   @override
@@ -114,12 +122,62 @@ class _SettingsScreenState extends State<SettingsScreen> {
     }
   }
 
+  Future<void> _loadDeveloperMode() async {
+    final isEnabled = await DeveloperModeService.isEnabled();
+    if (!mounted) return;
+    setState(() {
+      _isDeveloperModeEnabled = isEnabled;
+    });
+  }
+
+  Future<void> _loadOnlineTraceCacheStatus() async {
+    final cachedAt = await MeshMapNodesService.cachedAt();
+    if (!mounted) return;
+    setState(() {
+      _onlineTraceCacheUpdatedAt = cachedAt;
+    });
+  }
+
+  Future<void> _handleVersionTap() async {
+    if (_isDeveloperModeEnabled) {
+      await DeveloperModeService.setEnabled(false);
+      if (!mounted) return;
+      setState(() {
+        _isDeveloperModeEnabled = false;
+        _versionTapCount = 0;
+      });
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('Developer mode disabled')));
+      return;
+    }
+
+    final nextTapCount = _versionTapCount + 1;
+    if (nextTapCount >= 3) {
+      await DeveloperModeService.setEnabled(true);
+      if (!mounted) return;
+      setState(() {
+        _isDeveloperModeEnabled = true;
+        _versionTapCount = 0;
+      });
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('Developer mode enabled')));
+      return;
+    }
+
+    if (!mounted) return;
+    setState(() {
+      _versionTapCount = nextTapCount;
+    });
+  }
+
   Future<void> _saveRxTxPreference(bool value) async {
     final prefs = await SharedPreferences.getInstance();
     await prefs.setBool('show_rx_tx_indicators', value);
   }
 
-  Future<void> _loadVoiceBitratePreference() async {
+  Future<void> _loadVoicePreferences() async {
     final value = await VoiceBitratePreferences.getBitrate();
     if (!mounted) return;
     setState(() {
@@ -424,7 +482,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
   /// Check for app updates and show notification or dialog
   Future<void> _checkForUpdates() async {
     // Only on Android
-    if (!Platform.isAndroid) {
+    if (kIsWeb || defaultTargetPlatform != TargetPlatform.android) {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
           const SnackBar(
@@ -783,6 +841,66 @@ class _SettingsScreenState extends State<SettingsScreen> {
     );
   }
 
+  Future<void> _clearOnlineTraceCache() async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('Clear online trace database'),
+        content: const Text(
+          'This removes the cached online node database used as a trace fallback.',
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: Text(AppLocalizations.of(context)!.cancel),
+          ),
+          TextButton(
+            onPressed: () => Navigator.pop(context, true),
+            style: TextButton.styleFrom(foregroundColor: Colors.red),
+            child: Text(AppLocalizations.of(context)!.clear),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed != true || !mounted) return;
+
+    setState(() {
+      _isClearingOnlineTraceCache = true;
+    });
+
+    await MeshMapNodesService.clearCache();
+
+    if (!mounted) return;
+    setState(() {
+      _onlineTraceCacheUpdatedAt = null;
+      _isClearingOnlineTraceCache = false;
+    });
+
+    ScaffoldMessenger.of(context).showSnackBar(
+      const SnackBar(
+        content: Text('Online trace database cleared'),
+        backgroundColor: Colors.orange,
+      ),
+    );
+  }
+
+  String _onlineTraceCacheSubtitle() {
+    final cachedAt = _onlineTraceCacheUpdatedAt;
+    if (cachedAt == null) {
+      return 'No cached online database. Refresh runs in background when internet is available.';
+    }
+
+    final expiresAt = cachedAt.add(MeshMapNodesService.traceCacheTtl);
+    return 'Last synced ${_formatDateTime(cachedAt)}. Cached for 24 hours until ${_formatDateTime(expiresAt)}.';
+  }
+
+  String _formatDateTime(DateTime value) {
+    final local = value.toLocal();
+    String two(int part) => part.toString().padLeft(2, '0');
+    return '${local.year}-${two(local.month)}-${two(local.day)} ${two(local.hour)}:${two(local.minute)}';
+  }
+
   Future<void> _showRouteHashSizeDialog() async {
     final selected = await showDialog<int>(
       context: context,
@@ -929,6 +1047,45 @@ class _SettingsScreenState extends State<SettingsScreen> {
               trailing: const Icon(Icons.chevron_right),
               onTap: _showRouteHashSizeDialog,
             ),
+            Consumer<AppProvider>(
+              builder: (context, appProvider, child) => SwitchListTile(
+                secondary: const Icon(Icons.swap_horiz),
+                title: const Text('Auto route rotation'),
+                subtitle: const Text(
+                  'Rotate between best known direct paths and flood mode for room/contact sends',
+                ),
+                value: appProvider.autoRouteRotationEnabled,
+                onChanged: (value) async {
+                  await appProvider.toggleAutoRouteRotationEnabled(value);
+                },
+              ),
+            ),
+            Consumer<AppProvider>(
+              builder: (context, appProvider, child) => SwitchListTile(
+                secondary: const Icon(Icons.route),
+                title: const Text('Nearest repeater fallback'),
+                subtitle: const Text(
+                  'After normal retries fail, try one final resend through the nearest repeater',
+                ),
+                value: appProvider.nearestRelayFallbackEnabled,
+                onChanged: (value) async {
+                  await appProvider.toggleNearestRelayFallbackEnabled(value);
+                },
+              ),
+            ),
+            Consumer<AppProvider>(
+              builder: (context, appProvider, child) => SwitchListTile(
+                secondary: const Icon(Icons.route),
+                title: const Text('Clear path on max retry'),
+                subtitle: const Text(
+                  'Clear the route only after all retries and final router fallback fail',
+                ),
+                value: appProvider.clearPathOnMaxRetry,
+                onChanged: (value) async {
+                  await appProvider.toggleClearPathOnMaxRetry(value);
+                },
+              ),
+            ),
             ListTile(
               leading: const Icon(Icons.delete_sweep, color: Colors.red),
               title: const Text(
@@ -938,6 +1095,63 @@ class _SettingsScreenState extends State<SettingsScreen> {
               subtitle: const Text('Delete all stored message history'),
               onTap: _clearMessages,
             ),
+            Consumer<AppProvider>(
+              builder: (context, appProvider, child) => ListTile(
+                leading: const Icon(Icons.format_size),
+                title: const Text('Message font size'),
+                subtitle: Text(
+                  '${(appProvider.messageFontScale * 100).round()}% of default',
+                ),
+                trailing: SizedBox(
+                  width: 150,
+                  child: Slider(
+                    value: appProvider.messageFontScale,
+                    min: 0.85,
+                    max: 1.4,
+                    divisions: 11,
+                    label: '${(appProvider.messageFontScale * 100).round()}%',
+                    onChanged: (value) {
+                      appProvider.setMessageFontScale(value);
+                    },
+                  ),
+                ),
+              ),
+            ),
+          ]),
+
+          _buildSectionHeader('Tracing'),
+          _buildSettingsCard([
+            ListTile(
+              leading: const Icon(Icons.cloud_sync),
+              title: const Text('Online trace database'),
+              subtitle: Text(_onlineTraceCacheSubtitle()),
+            ),
+            ListTile(
+              leading: Icon(
+                Icons.delete_sweep,
+                color: _isClearingOnlineTraceCache ? null : Colors.red,
+              ),
+              title: Text(
+                'Clear online trace database',
+                style: TextStyle(
+                  color: _isClearingOnlineTraceCache ? null : Colors.red,
+                ),
+              ),
+              subtitle: const Text(
+                'Remove the 24-hour cached fallback used when local route matches are incomplete',
+              ),
+              enabled: !_isClearingOnlineTraceCache,
+              trailing: _isClearingOnlineTraceCache
+                  ? const SizedBox(
+                      width: 18,
+                      height: 18,
+                      child: CircularProgressIndicator(strokeWidth: 2),
+                    )
+                  : null,
+              onTap: _isClearingOnlineTraceCache
+                  ? null
+                  : _clearOnlineTraceCache,
+            ),
           ]),
 
           _buildSectionHeader('Voice'),
@@ -949,6 +1163,11 @@ class _SettingsScreenState extends State<SettingsScreen> {
                   bandPassEnabled: appProvider.isVoiceBandPassFilterEnabled,
                   compressorEnabled: appProvider.isVoiceCompressorEnabled,
                   limiterEnabled: appProvider.isVoiceLimiterEnabled,
+                  autoGainEnabled: appProvider.isVoiceAutoGainEnabled,
+                  echoCancellationEnabled:
+                      appProvider.isVoiceEchoCancellationEnabled,
+                  noiseSuppressionEnabled:
+                      appProvider.isVoiceNoiseSuppressionEnabled,
                   silenceTrimEnabled: appProvider.isVoiceSilenceTrimmingEnabled,
                 ),
           ),
@@ -995,6 +1214,43 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 },
               ),
             ),
+            Consumer<AppProvider>(
+              builder: (context, appProvider, child) => SwitchListTile(
+                secondary: const Icon(Icons.auto_fix_high),
+                title: const Text('Mic auto gain'),
+                subtitle: const Text('Lets the recorder adjust input level'),
+                value: appProvider.isVoiceAutoGainEnabled,
+                onChanged: (value) async {
+                  await appProvider.toggleVoiceAutoGainEnabled(value);
+                },
+              ),
+            ),
+            Consumer<AppProvider>(
+              builder: (context, appProvider, child) => SwitchListTile(
+                secondary: const Icon(Icons.hearing_disabled),
+                title: const Text('Echo cancellation'),
+                subtitle: const Text(
+                  'Uses recorder echo cancellation if available',
+                ),
+                value: appProvider.isVoiceEchoCancellationEnabled,
+                onChanged: (value) async {
+                  await appProvider.toggleVoiceEchoCancellationEnabled(value);
+                },
+              ),
+            ),
+            Consumer<AppProvider>(
+              builder: (context, appProvider, child) => SwitchListTile(
+                secondary: const Icon(Icons.noise_control_off),
+                title: const Text('Noise suppression'),
+                subtitle: const Text(
+                  'Uses recorder noise suppression if available',
+                ),
+                value: appProvider.isVoiceNoiseSuppressionEnabled,
+                onChanged: (value) async {
+                  await appProvider.toggleVoiceNoiseSuppressionEnabled(value);
+                },
+              ),
+            ),
             Consumer<AppProvider>(
               builder: (context, appProvider, child) => SwitchListTile(
                 secondary: const Icon(Icons.content_cut),
@@ -1106,8 +1362,10 @@ class _SettingsScreenState extends State<SettingsScreen> {
             ),
           ]),
 
-          _buildSectionHeader('Network Sharing'),
-          const ConnectionModeSelector(),
+          if (!kIsWeb) ...[
+            _buildSectionHeader('Network Sharing'),
+            const ConnectionModeSelector(),
+          ],
 
           _buildSectionHeader(AppLocalizations.of(context)!.permissionsSection),
           _buildSettingsCard([
@@ -1197,6 +1455,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
                     ? '${_packageInfo!.version} (${_packageInfo!.buildNumber})'
                     : 'Loading...',
               ),
+              onTap: _handleVersionTap,
             ),
             ListTile(
               leading: const Icon(Icons.badge),
@@ -1212,7 +1471,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
               onTap: () => _showAboutDialog(),
             ),
           ]),
-          if (Platform.isAndroid)
+          if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android)
             Padding(
               padding: const EdgeInsets.only(top: 8),
               child: FilledButton.icon(
@@ -1511,6 +1770,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
     required bool bandPassEnabled,
     required bool compressorEnabled,
     required bool limiterEnabled,
+    required bool autoGainEnabled,
+    required bool echoCancellationEnabled,
+    required bool noiseSuppressionEnabled,
     required bool silenceTrimEnabled,
   }) {
     final supported = VoiceBitratePreferences.supportedBitrates;
@@ -1523,6 +1785,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
         (bandPassEnabled ? 1 : 0) +
         (compressorEnabled ? 1 : 0) +
         (limiterEnabled ? 1 : 0) +
+        (autoGainEnabled ? 1 : 0) +
+        (echoCancellationEnabled ? 1 : 0) +
+        (noiseSuppressionEnabled ? 1 : 0) +
         (silenceTrimEnabled ? 1 : 0);
     final radioBw = connectionProvider.deviceInfo.radioBw;
     final radioSf = connectionProvider.deviceInfo.radioSf;
@@ -1530,7 +1795,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
     final bwHz = _resolveBandwidthHz(radioBw);
     final voiceMode = VoiceBitratePreferences.toVoiceMode(bitrate);
     const voicePreviewMs = 10000; // 10-second reference clip
-    final packetDurationMs = codec2ModeFor(voiceMode).packetDurationMs;
+    final packetDurationMs = voiceMode.packetDurationMs;
     final voicePacketCount =
         (voicePreviewMs + packetDurationMs - 1) ~/ packetDurationMs;
     final voiceDirect = estimateVoiceTransmitDuration(
@@ -1565,7 +1830,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
             ),
             const SizedBox(height: 8),
             Text(
-              'Bitrate: $bitrate bps',
+              'Codec: ${voiceMode.label} · $bitrate bps',
               style: Theme.of(context).textTheme.bodySmall,
             ),
             const SizedBox(height: 4),
@@ -1612,6 +1877,31 @@ class _SettingsScreenState extends State<SettingsScreen> {
               ],
             ),
             const SizedBox(height: 8),
+            Row(
+              children: [
+                Expanded(
+                  child: _voiceStatChip(
+                    label: 'Auto gain',
+                    enabled: autoGainEnabled,
+                  ),
+                ),
+                const SizedBox(width: 8),
+                Expanded(
+                  child: _voiceStatChip(
+                    label: 'Echo cancel',
+                    enabled: echoCancellationEnabled,
+                  ),
+                ),
+                const SizedBox(width: 8),
+                Expanded(
+                  child: _voiceStatChip(
+                    label: 'Noise suppress',
+                    enabled: noiseSuppressionEnabled,
+                  ),
+                ),
+              ],
+            ),
+            const SizedBox(height: 8),
             Row(
               children: [
                 Expanded(
@@ -1624,7 +1914,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
             ),
             const SizedBox(height: 8),
             Text(
-              'Processing enabled: $enabledCount/4',
+              'Processing enabled: $enabledCount/7',
               style: Theme.of(context).textTheme.bodySmall,
             ),
           ],

lib/screens/welcome_wizard_screen.dart

@@ -1,6 +1,9 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 import '../l10n/app_localizations.dart';
+import '../providers/connection_provider.dart';
 import '../services/wizard_preferences.dart';
+import '../widgets/connection_dialog.dart';
 
 /// Welcome wizard screen to introduce new users to the app
 class WelcomeWizardScreen extends StatefulWidget {
@@ -14,12 +17,171 @@ class WelcomeWizardScreen extends StatefulWidget {
 
 class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
   final PageController _pageController = PageController();
+  final TextEditingController _deviceNameController = TextEditingController();
   int _currentPage = 0;
-  static const int _totalPages = 5;
+  bool _isApplyingDeviceSetup = false;
+  static const int _totalPages = 6;
+  static const List<_RadioPreset> _radioPresets = [
+    // Official MeshCore config presets from https://api.meshcore.nz/api/v1/config
+    _RadioPreset(
+      id: 'australia',
+      label: 'Australia',
+      summary: '915.800 MHz, BW 250 kHz, SF10, CR5',
+      frequencyKhz: 915800,
+      bandwidth: 8,
+      spreadingFactor: 10,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'australia_narrow',
+      label: 'Australia (Narrow)',
+      summary: '916.575 MHz, BW 62.5 kHz, SF7, CR8',
+      frequencyKhz: 916575,
+      bandwidth: 6,
+      spreadingFactor: 7,
+      codingRate: 8,
+    ),
+    _RadioPreset(
+      id: 'australia_sa_wa',
+      label: 'Australia: SA, WA',
+      summary: '923.125 MHz, BW 62.5 kHz, SF8, CR8',
+      frequencyKhz: 923125,
+      bandwidth: 6,
+      spreadingFactor: 8,
+      codingRate: 8,
+    ),
+    _RadioPreset(
+      id: 'australia_qld',
+      label: 'Australia: QLD',
+      summary: '923.125 MHz, BW 62.5 kHz, SF8, CR5',
+      frequencyKhz: 923125,
+      bandwidth: 6,
+      spreadingFactor: 8,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'eu_uk_narrow',
+      label: 'EU/UK (Narrow)',
+      summary: '869.618 MHz, BW 62.5 kHz, SF8, CR8',
+      frequencyKhz: 869618,
+      bandwidth: 6,
+      spreadingFactor: 8,
+      codingRate: 8,
+    ),
+    _RadioPreset(
+      id: 'eu_uk_deprecated',
+      label: 'EU/UK (Deprecated)',
+      summary: '869.525 MHz, BW 250 kHz, SF11, CR5',
+      frequencyKhz: 869525,
+      bandwidth: 8,
+      spreadingFactor: 11,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'czech_republic_narrow',
+      label: 'Czech Republic (Narrow)',
+      summary: '869.432 MHz, BW 62.5 kHz, SF7, CR5',
+      frequencyKhz: 869432,
+      bandwidth: 6,
+      spreadingFactor: 7,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'eu_433_long_range',
+      label: 'EU 433MHz (Long Range)',
+      summary: '433.650 MHz, BW 250 kHz, SF11, CR5',
+      frequencyKhz: 433650,
+      bandwidth: 8,
+      spreadingFactor: 11,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'new_zealand',
+      label: 'New Zealand',
+      summary: '917.375 MHz, BW 250 kHz, SF11, CR5',
+      frequencyKhz: 917375,
+      bandwidth: 8,
+      spreadingFactor: 11,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'new_zealand_narrow',
+      label: 'New Zealand (Narrow)',
+      summary: '917.375 MHz, BW 62.5 kHz, SF7, CR5',
+      frequencyKhz: 917375,
+      bandwidth: 6,
+      spreadingFactor: 7,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'portugal_433',
+      label: 'Portugal 433',
+      summary: '433.375 MHz, BW 62.5 kHz, SF9, CR6',
+      frequencyKhz: 433375,
+      bandwidth: 6,
+      spreadingFactor: 9,
+      codingRate: 6,
+    ),
+    _RadioPreset(
+      id: 'portugal_868',
+      label: 'Portugal 868',
+      summary: '869.618 MHz, BW 62.5 kHz, SF7, CR6',
+      frequencyKhz: 869618,
+      bandwidth: 6,
+      spreadingFactor: 7,
+      codingRate: 6,
+    ),
+    _RadioPreset(
+      id: 'switzerland',
+      label: 'Switzerland',
+      summary: '869.618 MHz, BW 62.5 kHz, SF8, CR8',
+      frequencyKhz: 869618,
+      bandwidth: 6,
+      spreadingFactor: 8,
+      codingRate: 8,
+    ),
+    _RadioPreset(
+      id: 'usa_canada_recommended',
+      label: 'USA/Canada (Recommended)',
+      summary: '910.525 MHz, BW 62.5 kHz, SF7, CR5',
+      frequencyKhz: 910525,
+      bandwidth: 6,
+      spreadingFactor: 7,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'vietnam_narrow',
+      label: 'Vietnam (Narrow)',
+      summary: '920.250 MHz, BW 62.5 kHz, SF8, CR5',
+      frequencyKhz: 920250,
+      bandwidth: 6,
+      spreadingFactor: 8,
+      codingRate: 5,
+    ),
+    _RadioPreset(
+      id: 'vietnam_deprecated',
+      label: 'Vietnam (Deprecated)',
+      summary: '920.250 MHz, BW 250 kHz, SF11, CR5',
+      frequencyKhz: 920250,
+      bandwidth: 8,
+      spreadingFactor: 11,
+      codingRate: 5,
+    ),
+  ];
+  _RadioPreset _selectedPreset = _radioPresets[4];
+
+  @override
+  void initState() {
+    super.initState();
+    final deviceInfo = context.read<ConnectionProvider>().deviceInfo;
+    _deviceNameController.text =
+        deviceInfo.selfName ?? deviceInfo.deviceName ?? '';
+  }
 
   @override
   void dispose() {
     _pageController.dispose();
+    _deviceNameController.dispose();
     super.dispose();
   }
 
@@ -30,7 +192,9 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
   }
 
   void _nextPage() {
-    if (_currentPage < _totalPages - 1) {
+    if (_currentPage == 1) {
+      _handleDeviceSetupAction();
+    } else if (_currentPage < _totalPages - 1) {
       _pageController.nextPage(
         duration: const Duration(milliseconds: 300),
         curve: Curves.easeInOut,
@@ -56,6 +220,98 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
     }
   }
 
+  Future<void> _openConnectionDialog() async {
+    await showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      builder: (context) => const ConnectionDialog(),
+    );
+    if (!mounted) return;
+    final connectionProvider = context.read<ConnectionProvider>();
+    if (connectionProvider.deviceInfo.isConnected) {
+      await connectionProvider.refreshDeviceInfo();
+    }
+    if (!mounted) return;
+    final deviceInfo = connectionProvider.deviceInfo;
+    final fetchedName = deviceInfo.selfName ?? deviceInfo.deviceName ?? '';
+    if (fetchedName.isNotEmpty) {
+      setState(() {
+        _deviceNameController.text = fetchedName;
+      });
+    } else {
+      setState(() {});
+    }
+  }
+
+  Future<void> _handleDeviceSetupAction() async {
+    final l10n = AppLocalizations.of(context)!;
+    final connectionProvider = context.read<ConnectionProvider>();
+    final deviceInfo = connectionProvider.deviceInfo;
+    if (!deviceInfo.isConnected) {
+      await _openConnectionDialog();
+      return;
+    }
+
+    final trimmedName = _deviceNameController.text.trim();
+    if (trimmedName.isEmpty) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(l10n.wizardEnterDeviceName)));
+      return;
+    }
+
+    setState(() {
+      _isApplyingDeviceSetup = true;
+    });
+
+    try {
+      await connectionProvider.setAdvertName(trimmedName);
+      await connectionProvider.setRadioParams(
+        frequency: _selectedPreset.frequencyKhz,
+        bandwidth: _selectedPreset.bandwidth,
+        spreadingFactor: _selectedPreset.spreadingFactor,
+        codingRate: _selectedPreset.codingRate,
+      );
+      await connectionProvider.refreshDeviceInfo();
+
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(
+            l10n.wizardDeviceSetupSaved(trimmedName, _selectedPreset.label),
+          ),
+          backgroundColor: Colors.green,
+        ),
+      );
+      _pageController.nextPage(
+        duration: const Duration(milliseconds: 300),
+        curve: Curves.easeInOut,
+      );
+    } catch (e) {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(l10n.failedToSave(e.toString())),
+          backgroundColor: Colors.red,
+        ),
+      );
+    } finally {
+      if (mounted) {
+        setState(() {
+          _isApplyingDeviceSetup = false;
+        });
+      }
+    }
+  }
+
+  void _skipDeviceSetupStep() {
+    if (_isApplyingDeviceSetup) return;
+    _pageController.nextPage(
+      duration: const Duration(milliseconds: 300),
+      curve: Curves.easeInOut,
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     final l10n = AppLocalizations.of(context)!;
@@ -68,7 +324,7 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
           children: [
             // Top bar with skip button
             Padding(
-              padding: const EdgeInsets.all(16.0),
+              padding: const EdgeInsets.fromLTRB(16, 12, 16, 8),
               child: Row(
                 mainAxisAlignment: MainAxisAlignment.spaceBetween,
                 children: [
@@ -96,8 +352,10 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
               child: PageView(
                 controller: _pageController,
                 onPageChanged: _onPageChanged,
+                physics: const NeverScrollableScrollPhysics(),
                 children: [
                   _buildWelcomePage(context, l10n, colorScheme),
+                  _buildConnectDevicePage(context, l10n, colorScheme),
                   _buildConnectingPage(context, l10n, colorScheme),
                   _buildChannelPage(context, l10n, colorScheme),
                   _buildContactsPage(context, l10n, colorScheme),
@@ -108,7 +366,7 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
 
             // Page indicators
             Padding(
-              padding: const EdgeInsets.all(16.0),
+              padding: const EdgeInsets.fromLTRB(16, 8, 16, 8),
               child: Row(
                 mainAxisAlignment: MainAxisAlignment.center,
                 children: List.generate(
@@ -130,11 +388,11 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
 
             // Next/Get Started button
             Padding(
-              padding: const EdgeInsets.all(16.0),
+              padding: const EdgeInsets.fromLTRB(16, 8, 16, 16),
               child: SizedBox(
                 width: double.infinity,
                 child: ElevatedButton(
-                  onPressed: _nextPage,
+                  onPressed: _isApplyingDeviceSetup ? null : _nextPage,
                   style: ElevatedButton.styleFrom(
                     padding: const EdgeInsets.symmetric(vertical: 16.0),
                     shape: RoundedRectangleBorder(
@@ -142,7 +400,9 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
                     ),
                   ),
                   child: Text(
-                    _currentPage < _totalPages - 1
+                    _currentPage == 1
+                        ? _deviceSetupButtonLabel(context)
+                        : _currentPage < _totalPages - 1
                         ? l10n.wizardNext
                         : l10n.wizardGetStarted,
                     style: const TextStyle(fontSize: 16),
@@ -165,7 +425,21 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
       icon: Icons.waving_hand,
       iconColor: Colors.orange,
       title: l10n.wizardWelcomeTitle,
-      description: l10n.wizardWelcomeDescription,
+      description: l10n.wizardOverviewDescription,
+      features: [
+        _FeatureItem(
+          icon: Icons.chat_bubble_outline,
+          text: l10n.wizardOverviewFeature1,
+        ),
+        _FeatureItem(
+          icon: Icons.emergency_share,
+          text: l10n.wizardOverviewFeature2,
+        ),
+        _FeatureItem(
+          icon: Icons.settings_input_antenna,
+          text: l10n.wizardOverviewFeature3,
+        ),
+      ],
       colorScheme: colorScheme,
     );
   }
@@ -176,33 +450,225 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
     ColorScheme colorScheme,
   ) {
     return _buildPage(
-      icon: Icons.bluetooth_searching,
+      icon: Icons.forum_rounded,
       iconColor: Colors.blue,
-      title: l10n.wizardConnectingTitle,
-      description: l10n.wizardConnectingDescription,
+      title: l10n.wizardMessagingTitle,
+      description: l10n.wizardMessagingDescription,
       features: [
-        _FeatureItem(icon: Icons.radio, text: l10n.wizardConnectingFeature1),
-        _FeatureItem(icon: Icons.link, text: l10n.wizardConnectingFeature2),
-        _FeatureItem(icon: Icons.wifi_off, text: l10n.wizardConnectingFeature3),
+        _FeatureItem(icon: Icons.chat, text: l10n.wizardMessagingFeature1),
+        _FeatureItem(icon: Icons.campaign, text: l10n.wizardMessagingFeature2),
+        _FeatureItem(icon: Icons.mic, text: l10n.wizardMessagingFeature3),
       ],
       colorScheme: colorScheme,
     );
   }
 
+  Widget _buildConnectDevicePage(
+    BuildContext context,
+    AppLocalizations l10n,
+    ColorScheme colorScheme,
+  ) {
+    final connectionProvider = context.watch<ConnectionProvider>();
+    final deviceInfo = connectionProvider.deviceInfo;
+    final isConnected = deviceInfo.isConnected;
+    final connectedName = deviceInfo.selfName ?? deviceInfo.deviceName;
+
+    return LayoutBuilder(
+      builder: (context, constraints) => Center(
+        child: ConstrainedBox(
+          constraints: BoxConstraints(
+            maxWidth: 600,
+            maxHeight: constraints.maxHeight,
+          ),
+          child: Padding(
+            padding: const EdgeInsets.fromLTRB(20, 12, 20, 12),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.stretch,
+              children: [
+                _buildPageHeader(
+                  context: context,
+                  colorScheme: colorScheme,
+                  icon: Icons.bluetooth_connected,
+                  iconColor: Colors.green,
+                  title: l10n.wizardConnectDeviceTitle,
+                  description: l10n.wizardConnectDeviceDescription,
+                  badge: l10n.wizardSetupBadge,
+                ),
+                const SizedBox(height: 16),
+                _buildContentCard(
+                  colorScheme: colorScheme,
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.stretch,
+                    children: [
+                      Row(
+                        children: [
+                          Icon(
+                            isConnected
+                                ? Icons.check_circle
+                                : Icons.bluetooth_searching,
+                            color: isConnected
+                                ? colorScheme.primary
+                                : colorScheme.onSurfaceVariant,
+                          ),
+                          const SizedBox(width: 12),
+                          Expanded(
+                            child: Text(
+                              isConnected
+                                  ? l10n.wizardConnectedToDevice(
+                                      connectedName ?? l10n.device,
+                                    )
+                                  : l10n.wizardNoDeviceConnected,
+                              style: Theme.of(context).textTheme.bodyMedium
+                                  ?.copyWith(fontWeight: FontWeight.w600),
+                            ),
+                          ),
+                          TextButton(
+                            onPressed: _openConnectionDialog,
+                            child: Text(
+                              isConnected ? l10n.change : l10n.connect,
+                            ),
+                          ),
+                        ],
+                      ),
+                      Align(
+                        alignment: Alignment.centerRight,
+                        child: TextButton(
+                          onPressed: _skipDeviceSetupStep,
+                          child: Text(l10n.wizardSkipForNow),
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+                const SizedBox(height: 12),
+                _buildContentCard(
+                  colorScheme: colorScheme,
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.stretch,
+                    children: [
+                      TextField(
+                        controller: _deviceNameController,
+                        textInputAction: TextInputAction.done,
+                        decoration: InputDecoration(
+                          labelText: l10n.wizardDeviceNameLabel,
+                          border: OutlineInputBorder(),
+                          helperText: l10n.wizardDeviceNameHelp,
+                        ),
+                      ),
+                      const SizedBox(height: 12),
+                      DropdownButtonFormField<_RadioPreset>(
+                        initialValue: _selectedPreset,
+                        isExpanded: true,
+                        decoration: InputDecoration(
+                          labelText: l10n.wizardConfigRegionLabel,
+                          border: OutlineInputBorder(),
+                          helperText: l10n.wizardConfigRegionHelp,
+                        ),
+                        items: _radioPresets
+                            .map(
+                              (preset) => DropdownMenuItem<_RadioPreset>(
+                                value: preset,
+                                child: Text(
+                                  preset.label,
+                                  overflow: TextOverflow.ellipsis,
+                                ),
+                              ),
+                            )
+                            .toList(),
+                        onChanged: (preset) {
+                          if (preset == null) return;
+                          setState(() {
+                            _selectedPreset = preset;
+                          });
+                        },
+                      ),
+                    ],
+                  ),
+                ),
+                const SizedBox(height: 16),
+                _buildContentCard(
+                  colorScheme: colorScheme,
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        _selectedPreset.label,
+                        style: Theme.of(context).textTheme.titleMedium
+                            ?.copyWith(fontWeight: FontWeight.w700),
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        _selectedPreset.summary,
+                        style: Theme.of(context).textTheme.bodyMedium,
+                      ),
+                      const SizedBox(height: 14),
+                      ...[
+                        _FeatureItem(
+                          icon: Icons.rule,
+                          text: l10n.wizardPresetNote1,
+                        ),
+                        _FeatureItem(
+                          icon: Icons.settings_input_antenna,
+                          text: l10n.wizardPresetNote2,
+                        ),
+                        _FeatureItem(
+                          icon: Icons.public,
+                          text: l10n.wizardPresetNote3,
+                        ),
+                      ].map(
+                        (feature) => Padding(
+                          padding: const EdgeInsets.symmetric(vertical: 5),
+                          child: _buildFeatureRow(
+                            context,
+                            colorScheme,
+                            feature,
+                            iconSize: 20,
+                            gap: 12,
+                          ),
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  String _deviceSetupButtonLabel(BuildContext context) {
+    final isConnected = context
+        .watch<ConnectionProvider>()
+        .deviceInfo
+        .isConnected;
+    if (_isApplyingDeviceSetup) {
+      return AppLocalizations.of(context)!.wizardSaving;
+    }
+    final l10n = AppLocalizations.of(context)!;
+    return isConnected
+        ? l10n.wizardSaveAndContinue
+        : l10n.wizardConnectDeviceTitle;
+  }
+
   Widget _buildChannelPage(
     BuildContext context,
     AppLocalizations l10n,
     ColorScheme colorScheme,
   ) {
     return _buildPage(
-      icon: Icons.campaign,
+      icon: Icons.groups_rounded,
       iconColor: Colors.purple,
-      title: l10n.wizardChannelTitle,
-      description: l10n.wizardChannelDescription,
+      title: l10n.wizardNetworkTitle,
+      description: l10n.wizardNetworkDescription,
       features: [
-        _FeatureItem(icon: Icons.public, text: l10n.wizardChannelFeature1),
-        _FeatureItem(icon: Icons.groups, text: l10n.wizardChannelFeature2),
-        _FeatureItem(icon: Icons.send, text: l10n.wizardChannelFeature3),
+        _FeatureItem(
+          icon: Icons.person_add_alt_1,
+          text: l10n.wizardNetworkFeature1,
+        ),
+        _FeatureItem(icon: Icons.route, text: l10n.wizardNetworkFeature2),
+        _FeatureItem(icon: Icons.hub, text: l10n.wizardNetworkFeature3),
       ],
       colorScheme: colorScheme,
     );
@@ -214,17 +680,14 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
     ColorScheme colorScheme,
   ) {
     return _buildPage(
-      icon: Icons.people,
+      icon: Icons.map_rounded,
       iconColor: Colors.teal,
-      title: l10n.wizardContactsTitle,
-      description: l10n.wizardContactsDescription,
+      title: l10n.wizardMapOpsTitle,
+      description: l10n.wizardMapOpsDescription,
       features: [
-        _FeatureItem(icon: Icons.person_add, text: l10n.wizardContactsFeature1),
-        _FeatureItem(icon: Icons.chat, text: l10n.wizardContactsFeature2),
-        _FeatureItem(
-          icon: Icons.battery_std,
-          text: l10n.wizardContactsFeature3,
-        ),
+        _FeatureItem(icon: Icons.location_on, text: l10n.wizardMapOpsFeature1),
+        _FeatureItem(icon: Icons.draw, text: l10n.wizardMapOpsFeature2),
+        _FeatureItem(icon: Icons.router, text: l10n.wizardMapOpsFeature3),
       ],
       colorScheme: colorScheme,
     );
@@ -236,18 +699,17 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
     ColorScheme colorScheme,
   ) {
     return _buildPage(
-      icon: Icons.map,
+      icon: Icons.tune_rounded,
       iconColor: Colors.red,
-      title: l10n.wizardMapTitle,
-      description: l10n.wizardMapDescription,
+      title: l10n.wizardToolsTitle,
+      description: l10n.wizardToolsDescription,
       features: [
-        _FeatureItem(icon: Icons.location_on, text: l10n.wizardMapFeature1),
+        _FeatureItem(icon: Icons.settings, text: l10n.wizardToolsFeature1),
+        _FeatureItem(icon: Icons.sensors, text: l10n.wizardToolsFeature2),
         _FeatureItem(
-          icon: Icons.person_pin_circle,
-          text: l10n.wizardMapFeature2,
+          icon: Icons.analytics_outlined,
+          text: l10n.wizardToolsFeature3,
         ),
-        _FeatureItem(icon: Icons.offline_pin, text: l10n.wizardMapFeature3),
-        _FeatureItem(icon: Icons.draw, text: l10n.wizardMapFeature4),
       ],
       colorScheme: colorScheme,
     );
@@ -261,69 +723,149 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
     List<_FeatureItem>? features,
     required ColorScheme colorScheme,
   }) {
-    return SingleChildScrollView(
-      padding: const EdgeInsets.all(24.0),
-      child: Column(
-        mainAxisAlignment: MainAxisAlignment.center,
-        children: [
-          const SizedBox(height: 20),
-          // Icon
-          Container(
-            padding: const EdgeInsets.all(24.0),
-            decoration: BoxDecoration(
-              color: iconColor.withValues(alpha: 0.1),
-              shape: BoxShape.circle,
-            ),
-            child: Icon(icon, size: 80, color: iconColor),
+    final l10n = AppLocalizations.of(context)!;
+    return LayoutBuilder(
+      builder: (context, constraints) => Center(
+        child: ConstrainedBox(
+          constraints: BoxConstraints(
+            maxWidth: 560,
+            maxHeight: constraints.maxHeight,
           ),
-          const SizedBox(height: 32),
-          // Title
-          Text(
-            title,
-            style: Theme.of(context).textTheme.headlineMedium?.copyWith(
-              fontWeight: FontWeight.bold,
-              color: colorScheme.onSurface,
-            ),
-            textAlign: TextAlign.center,
-          ),
-          const SizedBox(height: 16),
-          // Description
-          Text(
-            description,
-            style: Theme.of(context).textTheme.bodyLarge?.copyWith(
-              color: colorScheme.onSurface.withValues(alpha: 0.7),
-              height: 1.5,
-            ),
-            textAlign: TextAlign.center,
-          ),
-          if (features != null && features.isNotEmpty) ...[
-            const SizedBox(height: 32),
-            // Features list
-            ...features.map(
-              (feature) => Padding(
-                padding: const EdgeInsets.symmetric(vertical: 8.0),
-                child: Row(
-                  children: [
-                    Icon(feature.icon, color: colorScheme.primary, size: 24),
-                    const SizedBox(width: 16),
-                    Expanded(
-                      child: Text(
-                        feature.text,
-                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
-                          color: colorScheme.onSurface,
-                        ),
-                      ),
-                    ),
-                  ],
+          child: Padding(
+            padding: const EdgeInsets.fromLTRB(20, 12, 20, 12),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                _buildPageHeader(
+                  context: context,
+                  colorScheme: colorScheme,
+                  icon: icon,
+                  iconColor: iconColor,
+                  title: title,
+                  description: description,
+                  badge: l10n.wizardOverviewBadge,
                 ),
-              ),
+                if (features != null && features.isNotEmpty) ...[
+                  const SizedBox(height: 18),
+                  _buildContentCard(
+                    colorScheme: colorScheme,
+                    child: Column(
+                      children: features
+                          .map(
+                            (feature) => Padding(
+                              padding: const EdgeInsets.symmetric(vertical: 7),
+                              child: _buildFeatureRow(
+                                context,
+                                colorScheme,
+                                feature,
+                              ),
+                            ),
+                          )
+                          .toList(),
+                    ),
+                  ),
+                ],
+              ],
             ),
-          ],
-          const SizedBox(height: 20),
-        ],
+          ),
+        ),
       ),
     );
   }
+
+  Widget _buildPageHeader({
+    required BuildContext context,
+    required ColorScheme colorScheme,
+    required IconData icon,
+    required Color iconColor,
+    required String title,
+    required String description,
+    required String badge,
+  }) {
+    return Column(
+      children: [
+        Container(
+          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+          decoration: BoxDecoration(
+            color: colorScheme.secondaryContainer,
+            borderRadius: BorderRadius.circular(999),
+          ),
+          child: Text(
+            badge,
+            style: Theme.of(context).textTheme.labelLarge?.copyWith(
+              color: colorScheme.onSecondaryContainer,
+              fontWeight: FontWeight.w700,
+            ),
+          ),
+        ),
+        const SizedBox(height: 12),
+        Container(
+          padding: const EdgeInsets.all(18),
+          decoration: BoxDecoration(
+            color: iconColor.withValues(alpha: 0.1),
+            shape: BoxShape.circle,
+          ),
+          child: Icon(icon, size: 56, color: iconColor),
+        ),
+        const SizedBox(height: 18),
+        Text(
+          title,
+          style: Theme.of(context).textTheme.headlineSmall?.copyWith(
+            fontWeight: FontWeight.bold,
+            color: colorScheme.onSurface,
+          ),
+          textAlign: TextAlign.center,
+        ),
+        const SizedBox(height: 10),
+        Text(
+          description,
+          style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+            color: colorScheme.onSurface.withValues(alpha: 0.72),
+            height: 1.4,
+          ),
+          textAlign: TextAlign.center,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildContentCard({
+    required ColorScheme colorScheme,
+    required Widget child,
+  }) {
+    return Container(
+      padding: const EdgeInsets.all(16),
+      decoration: BoxDecoration(
+        color: colorScheme.surfaceContainerHighest,
+        borderRadius: BorderRadius.circular(18),
+      ),
+      child: child,
+    );
+  }
+
+  Widget _buildFeatureRow(
+    BuildContext context,
+    ColorScheme colorScheme,
+    _FeatureItem feature, {
+    double iconSize = 22,
+    double gap = 14,
+  }) {
+    return Row(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Icon(feature.icon, color: colorScheme.primary, size: iconSize),
+        SizedBox(width: gap),
+        Expanded(
+          child: Text(
+            feature.text,
+            style: Theme.of(
+              context,
+            ).textTheme.bodyMedium?.copyWith(color: colorScheme.onSurface),
+          ),
+        ),
+      ],
+    );
+  }
 }
 
 class _FeatureItem {
@@ -332,3 +874,23 @@ class _FeatureItem {
 
   _FeatureItem({required this.icon, required this.text});
 }
+
+class _RadioPreset {
+  final String id;
+  final String label;
+  final String summary;
+  final int frequencyKhz;
+  final int bandwidth;
+  final int spreadingFactor;
+  final int codingRate;
+
+  const _RadioPreset({
+    required this.id,
+    required this.label,
+    required this.summary,
+    required this.frequencyKhz,
+    required this.bandwidth,
+    required this.spreadingFactor,
+    required this.codingRate,
+  });
+}

lib/services/background_location_service.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:io';
 import 'package:flutter/widgets.dart';
 import 'package:geolocator/geolocator.dart';
 import 'package:shared_preferences/shared_preferences.dart';
@@ -58,6 +59,16 @@ class BackgroundLocationService {
       return false;
     }
 
+    if (Platform.isIOS && permission != LocationPermission.always) {
+      permission = await Geolocator.requestPermission();
+      if (permission != LocationPermission.always) {
+        debugPrint(
+          '⚠️ [BackgroundLocation] iOS background tracking requires Always permission',
+        );
+        return false;
+      }
+    }
+
     // Save settings
     final prefs = await SharedPreferences.getInstance();
     await prefs.setBool(_prefKeyEnabled, true);
@@ -68,8 +79,7 @@ class BackgroundLocationService {
     try {
       _positionSubscription =
           Geolocator.getPositionStream(
-            locationSettings: LocationSettings(
-              accuracy: LocationAccuracy.best,
+            locationSettings: _buildLocationSettings(
               distanceFilter: distanceThreshold.toInt(),
             ),
           ).listen((Position position) async {
@@ -171,4 +181,22 @@ class BackgroundLocationService {
       await startTracking(distanceThreshold: distance);
     }
   }
+
+  LocationSettings _buildLocationSettings({int distanceFilter = 10}) {
+    if (Platform.isIOS) {
+      return AppleSettings(
+        accuracy: LocationAccuracy.best,
+        activityType: ActivityType.fitness,
+        allowBackgroundLocationUpdates: true,
+        distanceFilter: distanceFilter,
+        pauseLocationUpdatesAutomatically: false,
+        showBackgroundLocationIndicator: true,
+      );
+    }
+
+    return LocationSettings(
+      accuracy: LocationAccuracy.best,
+      distanceFilter: distanceFilter,
+    );
+  }
 }

lib/services/build_info_service.dart

@@ -1,6 +1,5 @@
-import 'dart:io' show Platform;
+import 'package:flutter/foundation.dart' show TargetPlatform, defaultTargetPlatform, debugPrint, kIsWeb;
 import 'package:flutter/services.dart';
-import 'package:flutter/foundation.dart';
 
 /// Service for accessing build information from native platform code
 /// Currently supports Android only - returns "unknown" for other platforms
@@ -25,7 +24,7 @@ class BuildInfoService {
     }
 
     // Only Android has the platform channel implementation
-    if (!Platform.isAndroid) {
+    if (kIsWeb || defaultTargetPlatform != TargetPlatform.android) {
       debugPrint('[BuildInfoService] Not on Android platform, returning "unknown"');
       _cachedCommitHash = 'unknown';
       return _cachedCommitHash!;

lib/services/contact_route_resolver.dart

@@ -0,0 +1,336 @@
+import 'dart:math' as math;
+
+import 'package:latlong2/latlong.dart';
+
+import '../models/contact.dart';
+
+class ResolvedContactRoutePlan {
+  final List<String> tokens;
+  final List<Contact> selectedContacts;
+  final String summary;
+
+  const ResolvedContactRoutePlan({
+    required this.tokens,
+    required this.selectedContacts,
+    required this.summary,
+  });
+
+  String get canonicalText => tokens.join(',');
+}
+
+class ContactRouteResolver {
+  static const Distance _distance = Distance();
+
+  const ContactRouteResolver._();
+
+  static ResolvedContactRoutePlan? resolveAutomaticRoute({
+    required LatLng senderLocation,
+    required Contact recipient,
+    required List<Contact> availableContacts,
+    required int hashSize,
+  }) {
+    final recipientLocation = recipient.displayLocation;
+    if (recipientLocation == null) return null;
+
+    final repeaters = availableContacts
+        .where(
+          (contact) =>
+              contact.isRepeater &&
+              contact.displayLocation != null &&
+              contact.publicKeyHex != recipient.publicKeyHex,
+        )
+        .toList();
+    if (repeaters.isEmpty) return null;
+
+    final recipientLatLng = LatLng(
+      recipientLocation.latitude,
+      recipientLocation.longitude,
+    );
+
+    final routedCandidates =
+        repeaters
+            .where(
+              (contact) =>
+                  contact.routeHasPath && contact.routeHashSize == hashSize,
+            )
+            .toList()
+          ..sort(
+            (a, b) =>
+                _scoreKnownRouteRepeater(
+                  senderLocation: senderLocation,
+                  recipientLocation: recipientLatLng,
+                  repeater: a,
+                  availableContacts: repeaters,
+                  hashSize: hashSize,
+                ).compareTo(
+                  _scoreKnownRouteRepeater(
+                    senderLocation: senderLocation,
+                    recipientLocation: recipientLatLng,
+                    repeater: b,
+                    availableContacts: repeaters,
+                    hashSize: hashSize,
+                  ),
+                ),
+          );
+
+    if (routedCandidates.isNotEmpty) {
+      final anchor = routedCandidates.first;
+      final tokens = <String>[
+        ...anchor.routeCanonicalText
+            .split(',')
+            .where((token) => token.isNotEmpty)
+            .map((token) => token.toUpperCase()),
+        _tokenFor(anchor, hashSize),
+      ];
+      final selectedContacts = _matchContactsForTokens(
+        tokens,
+        availableContacts: repeaters,
+      );
+      return ResolvedContactRoutePlan(
+        tokens: _dedupeTokens(tokens),
+        selectedContacts: selectedContacts,
+        summary: 'Resolved via known repeater route',
+      );
+    }
+
+    final corridorRepeaters = List<Contact>.from(repeaters)
+      ..sort((a, b) {
+        final progressA = _progressAlongSegment(
+          point: LatLng(
+            a.displayLocation!.latitude,
+            a.displayLocation!.longitude,
+          ),
+          start: senderLocation,
+          end: recipientLatLng,
+        );
+        final progressB = _progressAlongSegment(
+          point: LatLng(
+            b.displayLocation!.latitude,
+            b.displayLocation!.longitude,
+          ),
+          start: senderLocation,
+          end: recipientLatLng,
+        );
+        final progressCompare = progressA.compareTo(progressB);
+        if (progressCompare != 0) return progressCompare;
+        return _scoreRepeater(
+          senderLocation: senderLocation,
+          recipientLocation: recipientLatLng,
+          repeater: a,
+        ).compareTo(
+          _scoreRepeater(
+            senderLocation: senderLocation,
+            recipientLocation: recipientLatLng,
+            repeater: b,
+          ),
+        );
+      });
+
+    final selected = <Contact>[];
+    var currentPoint = senderLocation;
+    var currentDistanceToRecipient = _distance.as(
+      LengthUnit.Meter,
+      senderLocation,
+      recipientLatLng,
+    );
+    final maxCorridorDistance = math.max(
+      1500.0,
+      currentDistanceToRecipient * 0.22,
+    );
+
+    for (final repeater in corridorRepeaters) {
+      if (selected.length >= 4) break;
+      final repeaterPoint = LatLng(
+        repeater.displayLocation!.latitude,
+        repeater.displayLocation!.longitude,
+      );
+      final distanceToSegment = _distanceToSegmentMeters(
+        repeaterPoint,
+        senderLocation,
+        recipientLatLng,
+      );
+      if (distanceToSegment > maxCorridorDistance) {
+        continue;
+      }
+
+      final nextDistanceToRecipient = _distance.as(
+        LengthUnit.Meter,
+        repeaterPoint,
+        recipientLatLng,
+      );
+      if (nextDistanceToRecipient >= currentDistanceToRecipient - 300) {
+        continue;
+      }
+
+      final distanceFromCurrent = _distance.as(
+        LengthUnit.Meter,
+        currentPoint,
+        repeaterPoint,
+      );
+      if (distanceFromCurrent < 100) {
+        continue;
+      }
+
+      selected.add(repeater);
+      currentPoint = repeaterPoint;
+      currentDistanceToRecipient = nextDistanceToRecipient;
+
+      if (currentDistanceToRecipient < 2500) {
+        break;
+      }
+    }
+
+    if (selected.isEmpty) {
+      return null;
+    }
+
+    return ResolvedContactRoutePlan(
+      tokens: selected.map((contact) => _tokenFor(contact, hashSize)).toList(),
+      selectedContacts: selected,
+      summary: 'Resolved from repeater locations',
+    );
+  }
+
+  static List<Contact> _matchContactsForTokens(
+    List<String> tokens, {
+    required List<Contact> availableContacts,
+  }) {
+    final matches = <Contact>[];
+    final seen = <String>{};
+    for (final token in tokens) {
+      final match = availableContacts
+          .where(
+            (contact) => contact.publicKeyHex.toUpperCase().startsWith(token),
+          )
+          .firstOrNull;
+      if (match != null && seen.add(match.publicKeyHex)) {
+        matches.add(match);
+      }
+    }
+    return matches;
+  }
+
+  static List<String> _dedupeTokens(List<String> tokens) {
+    final result = <String>[];
+    for (final token in tokens) {
+      if (result.isEmpty || result.last != token) {
+        result.add(token);
+      }
+    }
+    return result;
+  }
+
+  static String _tokenFor(Contact contact, int hashSize) {
+    final hex = contact.publicKeyHex.toUpperCase();
+    final length = hashSize * 2;
+    return hex.length < length ? hex : hex.substring(0, length);
+  }
+
+  static double _scoreRepeater({
+    required LatLng senderLocation,
+    required LatLng recipientLocation,
+    required Contact repeater,
+  }) {
+    final point = LatLng(
+      repeater.displayLocation!.latitude,
+      repeater.displayLocation!.longitude,
+    );
+    final toRecipient = _distance.as(
+      LengthUnit.Meter,
+      point,
+      recipientLocation,
+    );
+    final corridor = _distanceToSegmentMeters(
+      point,
+      senderLocation,
+      recipientLocation,
+    );
+    return (toRecipient * 0.75) + (corridor * 0.25);
+  }
+
+  static double _scoreKnownRouteRepeater({
+    required LatLng senderLocation,
+    required LatLng recipientLocation,
+    required Contact repeater,
+    required List<Contact> availableContacts,
+    required int hashSize,
+  }) {
+    final baseScore = _scoreRepeater(
+      senderLocation: senderLocation,
+      recipientLocation: recipientLocation,
+      repeater: repeater,
+    );
+    final repeaterPoint = LatLng(
+      repeater.displayLocation!.latitude,
+      repeater.displayLocation!.longitude,
+    );
+
+    final chainContacts = repeater.routeCanonicalText
+        .split(',')
+        .where((token) => token.isNotEmpty)
+        .map(
+          (token) => availableContacts
+              .where(
+                (contact) =>
+                    contact.displayLocation != null &&
+                    contact.publicKeyHex.toUpperCase().startsWith(
+                      token.toUpperCase(),
+                    ),
+              )
+              .firstOrNull,
+        )
+        .whereType<Contact>()
+        .toList();
+
+    final chainEnd = chainContacts.isNotEmpty
+        ? LatLng(
+            chainContacts.last.displayLocation!.latitude,
+            chainContacts.last.displayLocation!.longitude,
+          )
+        : senderLocation;
+    final chainGap = _distance.as(LengthUnit.Meter, chainEnd, repeaterPoint);
+    final senderGap = _distance.as(
+      LengthUnit.Meter,
+      senderLocation,
+      repeaterPoint,
+    );
+
+    return (chainGap * 0.55) + (baseScore * 0.35) + (senderGap * 0.10);
+  }
+
+  static double _progressAlongSegment({
+    required LatLng point,
+    required LatLng start,
+    required LatLng end,
+  }) {
+    final dx = end.longitude - start.longitude;
+    final dy = end.latitude - start.latitude;
+    final lengthSquared = (dx * dx) + (dy * dy);
+    if (lengthSquared == 0) return 0;
+    return (((point.longitude - start.longitude) * dx) +
+            ((point.latitude - start.latitude) * dy)) /
+        lengthSquared;
+  }
+
+  static double _distanceToSegmentMeters(LatLng p, LatLng a, LatLng b) {
+    final ax = a.longitude;
+    final ay = a.latitude;
+    final bx = b.longitude;
+    final by = b.latitude;
+    final px = p.longitude;
+    final py = p.latitude;
+
+    final abx = bx - ax;
+    final aby = by - ay;
+    final apx = px - ax;
+    final apy = py - ay;
+    final ab2 = abx * abx + aby * aby;
+    if (ab2 == 0) {
+      return _distance.as(LengthUnit.Meter, a, p);
+    }
+    var t = (apx * abx + apy * aby) / ab2;
+    t = t.clamp(0.0, 1.0);
+    final closest = LatLng(ay + aby * t, ax + abx * t);
+    return _distance.as(LengthUnit.Meter, closest, p);
+  }
+}

lib/services/contact_storage_service.dart

@@ -2,12 +2,14 @@ import 'dart:convert';
 import 'package:flutter/foundation.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import '../models/contact.dart';
+import '../models/contact_group.dart';
 import '../utils/key_comparison.dart';
 import 'package:latlong2/latlong.dart';
 
 /// Service for persisting contacts to local storage
 class ContactStorageService {
   static const String _contactsKey = 'stored_contacts';
+  static const String _contactGroupsKey = 'stored_contact_groups';
   static const int _maxStoredContacts = 500; // Store up to 500 contacts
 
   /// Save contacts to persistent storage
@@ -90,6 +92,40 @@ class ContactStorageService {
     }
   }
 
+  Future<void> saveContactGroups(List<SavedContactGroup> groups) async {
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      final jsonString = jsonEncode(
+        groups.map((group) => _contactGroupToJson(group)).toList(),
+      );
+      await prefs.setString(_contactGroupsKey, jsonString);
+      debugPrint(
+        '✅ [ContactStorage] Saved ${groups.length} contact groups to storage',
+      );
+    } catch (e) {
+      debugPrint('❌ [ContactStorage] Error saving contact groups: $e');
+    }
+  }
+
+  Future<List<SavedContactGroup>> loadContactGroups() async {
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      final jsonString = prefs.getString(_contactGroupsKey);
+      if (jsonString == null || jsonString.isEmpty) {
+        return [];
+      }
+
+      final jsonList = jsonDecode(jsonString) as List<dynamic>;
+      return jsonList
+          .map((json) => _contactGroupFromJson(json as Map<String, dynamic>))
+          .whereType<SavedContactGroup>()
+          .toList();
+    } catch (e) {
+      debugPrint('❌ [ContactStorage] Error loading contact groups: $e');
+      return [];
+    }
+  }
+
   /// Get storage statistics
   Future<Map<String, dynamic>> getStorageStats() async {
     try {
@@ -203,4 +239,31 @@ class ContactStorageService {
       return null;
     }
   }
+
+  Map<String, dynamic> _contactGroupToJson(SavedContactGroup group) {
+    return {
+      'id': group.id,
+      'sectionKey': group.sectionKey,
+      'label': group.label,
+      'query': group.query,
+      'createdAtMillis': group.createdAt.millisecondsSinceEpoch,
+    };
+  }
+
+  SavedContactGroup? _contactGroupFromJson(Map<String, dynamic> json) {
+    try {
+      return SavedContactGroup(
+        id: json['id'] as String,
+        sectionKey: json['sectionKey'] as String,
+        label: json['label'] as String,
+        query: json['query'] as String,
+        createdAt: DateTime.fromMillisecondsSinceEpoch(
+          json['createdAtMillis'] as int,
+        ),
+      );
+    } catch (e) {
+      debugPrint('❌ [ContactStorage] Error parsing contact group: $e');
+      return null;
+    }
+  }
 }

lib/services/developer_mode_service.dart

@@ -0,0 +1,15 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+class DeveloperModeService {
+  static const String _developerModeKey = 'developer_mode_enabled';
+
+  static Future<bool> isEnabled() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getBool(_developerModeKey) ?? false;
+  }
+
+  static Future<void> setEnabled(bool enabled) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool(_developerModeKey, enabled);
+  }
+}

lib/services/live_traffic_summary.dart

@@ -0,0 +1,246 @@
+import '../models/ble_packet_log.dart';
+import '../utils/log_rx_route_decoder.dart';
+
+enum LiveTrafficBusyness { quiet, active, busy }
+
+class LiveTrafficEntry {
+  final BlePacketLog log;
+  final DecodedLogRxRoute? route;
+
+  const LiveTrafficEntry({required this.log, required this.route});
+
+  bool get isMultiHop => (route?.hopCount ?? 0) > 1;
+
+  int? get hopCount => route?.hopCount;
+
+  String get payloadLabel {
+    final decodedRoute = route;
+    if (decodedRoute == null) {
+      return log.responseCode != null ? log.opcodeName : 'Unknown';
+    }
+    return payloadTypeLabel(decodedRoute.payloadType);
+  }
+
+  String? get payloadMeaning {
+    final decodedRoute = route;
+    if (decodedRoute == null) return null;
+    return payloadTypeMeaning(decodedRoute.payloadType);
+  }
+
+  String get routePreview {
+    final decodedRoute = route;
+    if (decodedRoute == null || decodedRoute.hopHashes.isEmpty) {
+      return 'Direct packet';
+    }
+    return decodedRoute.hopHashes
+        .map((hashHex) => '0x${hashHex.toUpperCase()}')
+        .join(' -> ');
+  }
+
+  static String payloadTypeLabel(int payloadType) {
+    switch (payloadType) {
+      case 0x00:
+        return 'Request';
+      case 0x01:
+        return 'Response';
+      case 0x02:
+        return 'Text message';
+      case 0x03:
+        return 'Ack';
+      case 0x04:
+        return 'Advertisement';
+      case 0x05:
+        return 'Group text';
+      case 0x06:
+        return 'Group datagram';
+      case 0x07:
+        return 'Anonymous request';
+      case 0x08:
+        return 'Returned path';
+      case 0x09:
+        return 'Trace path';
+      case 0x0A:
+        return 'Multipart packet';
+      case 0x0B:
+        return 'Control packet';
+      default:
+        return '0x${payloadType.toRadixString(16).padLeft(2, '0')}';
+    }
+  }
+
+  static String payloadTypeMeaning(int payloadType) {
+    switch (payloadType) {
+      case 0x00:
+        return 'Request (destination/source hashes + MAC)';
+      case 0x01:
+        return 'Response to Request or Anonymous request';
+      case 0x02:
+        return 'Plain text message';
+      case 0x03:
+        return 'Simple acknowledgement';
+      case 0x04:
+        return 'Node advertisement';
+      case 0x05:
+        return 'Unverified group text message';
+      case 0x06:
+        return 'Unverified group datagram';
+      case 0x07:
+        return 'Generic anonymous request';
+      case 0x08:
+        return 'Returned path payload';
+      case 0x09:
+        return 'Trace path collecting hop SNR';
+      case 0x0A:
+        return 'One packet from a multipart set';
+      case 0x0B:
+        return 'Control or discovery packet';
+      default:
+        return 'protocol payload';
+    }
+  }
+}
+
+class LiveTrafficSnapshot {
+  final DateTime windowStart;
+  final Duration windowDuration;
+  final int packetsPerMinute;
+  final int rxCount;
+  final int txCount;
+  final int totalCount;
+  final double? avgSnrDb;
+  final double? latestSnrDb;
+  final double? avgRssiDbm;
+  final int? latestRssiDbm;
+  final int multiHopCount;
+  final double? avgHopCount;
+  final List<LiveTrafficEntry> visibleEntries;
+  final LiveTrafficBusyness busyness;
+
+  const LiveTrafficSnapshot({
+    required this.windowStart,
+    required this.windowDuration,
+    required this.packetsPerMinute,
+    required this.rxCount,
+    required this.txCount,
+    required this.totalCount,
+    required this.avgSnrDb,
+    required this.latestSnrDb,
+    required this.avgRssiDbm,
+    required this.latestRssiDbm,
+    required this.multiHopCount,
+    required this.avgHopCount,
+    required this.visibleEntries,
+    required this.busyness,
+  });
+}
+
+class LiveTrafficSummary {
+  static const Duration rollingWindow = Duration(seconds: 60);
+  static const int maxVisibleEntries = 120;
+  static const int logRxDataResponseCode = 0x88;
+
+  const LiveTrafficSummary._();
+
+  static LiveTrafficSnapshot fromLogs(
+    Iterable<BlePacketLog> logs, {
+    required DateTime now,
+    DateTime? clearedAt,
+    int? preferredHashSize,
+    Duration window = rollingWindow,
+    String? packetTypeFilter,
+  }) {
+    final windowStart = now.subtract(window);
+    final effectiveStart = clearedAt != null && clearedAt.isAfter(windowStart)
+        ? clearedAt
+        : windowStart;
+
+    final recentLogs = logs
+        .where(
+          (log) =>
+              log.direction == PacketDirection.rx &&
+              log.responseCode == logRxDataResponseCode &&
+              !log.timestamp.isBefore(effectiveStart),
+        )
+        .toList()
+      ..sort((a, b) => a.timestamp.compareTo(b.timestamp));
+
+    final entries = <LiveTrafficEntry>[];
+    for (final log in recentLogs) {
+      final route = LogRxRouteDecoder.decode(
+        log.rawData,
+        preferredHashSize: preferredHashSize,
+      );
+      entries.add(LiveTrafficEntry(log: log, route: route));
+    }
+
+    final filteredEntries = packetTypeFilter == null
+        ? entries
+        : entries
+              .where((entry) => entry.payloadLabel == packetTypeFilter)
+              .toList();
+
+    var rxCount = 0;
+    var snrCount = 0;
+    var snrSum = 0.0;
+    var rssiCount = 0;
+    var rssiSum = 0.0;
+    double? latestSnrDb;
+    int? latestRssiDbm;
+    var multiHopCount = 0;
+    var hopCountTotal = 0;
+    var hopCountSamples = 0;
+
+    for (final entry in filteredEntries) {
+      rxCount += 1;
+
+      final rxInfo = entry.log.logRxDataInfo;
+      if (rxInfo?.snrDb != null) {
+        snrCount += 1;
+        snrSum += rxInfo!.snrDb!;
+        latestSnrDb = rxInfo.snrDb!;
+      }
+      if (rxInfo?.rssiDbm != null) {
+        rssiCount += 1;
+        rssiSum += rxInfo!.rssiDbm!.toDouble();
+        latestRssiDbm = rxInfo.rssiDbm!;
+      }
+
+      final route = entry.route;
+      if (route != null && route.hopCount > 0) {
+        hopCountSamples += 1;
+        hopCountTotal += route.hopCount;
+        if (route.hopCount > 1) {
+          multiHopCount += 1;
+        }
+      }
+    }
+
+    final visibleEntries = filteredEntries.reversed.take(maxVisibleEntries).toList();
+    const txCount = 0;
+    final totalCount = rxCount;
+    final packetsPerMinute = totalCount;
+
+    return LiveTrafficSnapshot(
+      windowStart: effectiveStart,
+      windowDuration: window,
+      packetsPerMinute: packetsPerMinute,
+      rxCount: rxCount,
+      txCount: txCount,
+      totalCount: totalCount,
+      avgSnrDb: snrCount == 0 ? null : snrSum / snrCount,
+      latestSnrDb: latestSnrDb,
+      avgRssiDbm: rssiCount == 0 ? null : rssiSum / rssiCount,
+      latestRssiDbm: latestRssiDbm,
+      multiHopCount: multiHopCount,
+      avgHopCount: hopCountSamples == 0 ? null : hopCountTotal / hopCountSamples,
+      visibleEntries: visibleEntries,
+      busyness: _busynessForPacketsPerMinute(packetsPerMinute),
+    );
+  }
+
+  static LiveTrafficBusyness _busynessForPacketsPerMinute(int ppm) {
+    if (ppm <= 5) return LiveTrafficBusyness.quiet;
+    if (ppm <= 20) return LiveTrafficBusyness.active;
+    return LiveTrafficBusyness.busy;
+  }
+}

lib/services/locale_preferences.dart

@@ -15,6 +15,10 @@ class LocalePreferences {
     Locale('fr'), // French
     Locale('it'), // Italian
     Locale('el'), // Greek
+    Locale('pt'), // Portuguese
+    Locale('tr'), // Turkish
+    Locale('pl'), // Polish
+    Locale('uk'), // Ukrainian
     Locale('ru'), // Russian
     Locale('zh'), // Chinese
   ];
@@ -66,6 +70,14 @@ class LocalePreferences {
         return 'Italiano';
       case 'el':
         return 'Greek';
+      case 'pt':
+        return 'Portuguese';
+      case 'tr':
+        return 'Turkish';
+      case 'pl':
+        return 'Polish';
+      case 'uk':
+        return 'Ukrainian';
       case 'ru':
         return 'Русский';
       case 'zh':
@@ -94,6 +106,14 @@ class LocalePreferences {
         return 'Italiano';
       case 'el':
         return 'Ελληνικά';
+      case 'pt':
+        return 'Português';
+      case 'tr':
+        return 'Türkçe';
+      case 'pl':
+        return 'Polski';
+      case 'uk':
+        return 'Українська';
       case 'ru':
         return 'Русский';
       case 'zh':

lib/services/location_tracking_service.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:io';
 import 'package:flutter/foundation.dart';
 import 'package:geolocator/geolocator.dart';
 import 'package:shared_preferences/shared_preferences.dart';
@@ -148,6 +149,10 @@ class LocationTrackingService {
   /// Check if location permissions are granted
   Future<bool> checkPermissions() async {
     final permission = await Geolocator.checkPermission();
+    if (Platform.isIOS) {
+      return permission == LocationPermission.always;
+    }
+
     return permission == LocationPermission.always ||
         permission == LocationPermission.whileInUse;
   }
@@ -181,6 +186,16 @@ class LocationTrackingService {
       return false;
     }
 
+    if (Platform.isIOS && permission != LocationPermission.always) {
+      permission = await Geolocator.requestPermission();
+      if (permission != LocationPermission.always) {
+        onError?.call(
+          'Background tracking on iOS requires "Always" location access. Enable it in Settings.',
+        );
+        return false;
+      }
+    }
+
     debugPrint('✅ [LocationTracking] Location permissions granted');
     return true;
   }
@@ -209,9 +224,9 @@ class LocationTrackingService {
         }
 
         final position = await Geolocator.getCurrentPosition(
-          locationSettings: LocationSettings(
-            accuracy: LocationAccuracy.best,
+          locationSettings: _buildLocationSettings(
             timeLimit: timeLimit,
+            distanceFilter: 0,
           ),
         );
 
@@ -255,13 +270,35 @@ class LocationTrackingService {
   /// [distanceFilter] - Minimum distance in meters between position updates
   Stream<Position> getPositionStream({double distanceFilter = 10.0}) {
     return Geolocator.getPositionStream(
-      locationSettings: LocationSettings(
-        accuracy: LocationAccuracy.best,
+      locationSettings: _buildLocationSettings(
         distanceFilter: distanceFilter.toInt(),
       ),
     );
   }
 
+  LocationSettings _buildLocationSettings({
+    int distanceFilter = 10,
+    Duration? timeLimit,
+  }) {
+    if (Platform.isIOS) {
+      return AppleSettings(
+        accuracy: LocationAccuracy.best,
+        activityType: ActivityType.fitness,
+        allowBackgroundLocationUpdates: true,
+        distanceFilter: distanceFilter,
+        pauseLocationUpdatesAutomatically: false,
+        showBackgroundLocationIndicator: true,
+        timeLimit: timeLimit,
+      );
+    }
+
+    return LocationSettings(
+      accuracy: LocationAccuracy.best,
+      distanceFilter: distanceFilter,
+      timeLimit: timeLimit,
+    );
+  }
+
   // ============================================================================
   // Tracking Control
   // ============================================================================

lib/services/mesh_map_nodes_service.dart

@@ -1,5 +1,7 @@
+import 'dart:async';
 import 'dart:convert';
 import 'package:http/http.dart' as http;
+import 'package:shared_preferences/shared_preferences.dart';
 
 class MeshMapNode {
   final int type;
@@ -33,25 +35,36 @@ class MeshMapNode {
 class MeshMapNodesService {
   static const String _nodesEndpoint =
       'https://api.meshcore.nz/api/v1/map/nodes';
-  static const Duration _cacheTtl = Duration(minutes: 2);
-  static const Duration traceCacheTtl = Duration(minutes: 10);
+  static const int repeaterType = 1;
+  static const Duration _cacheTtl = Duration(hours: 24);
+  static const Duration traceCacheTtl = _cacheTtl;
   static const Duration traceTimeout = Duration(seconds: 30);
+  static const String _cacheKey = 'mesh_map_nodes_cache_v1';
+  static const String _cacheTimestampKey = 'mesh_map_nodes_cache_timestamp_v1';
   static List<MeshMapNode>? _cachedNodes;
   static DateTime? _cachedAt;
+  static Future<void>? _ongoingSync;
 
   static Future<List<MeshMapNode>> fetchNodes({
     bool forceRefresh = false,
     Duration cacheTtl = _cacheTtl,
+    bool allowNetwork = true,
+    http.Client? client,
   }) async {
     final now = DateTime.now();
+    final cached = await loadCachedNodes(cacheTtl: cacheTtl);
     if (!forceRefresh &&
-        _cachedNodes != null &&
+        cached.isNotEmpty &&
         _cachedAt != null &&
         now.difference(_cachedAt!) < cacheTtl) {
-      return _cachedNodes!;
+      return cached;
     }
 
-    final response = await http
+    if (!allowNetwork) {
+      return cached;
+    }
+
+    final response = await (client ?? http.Client())
         .get(Uri.parse(_nodesEndpoint))
         .timeout(traceTimeout);
     if (response.statusCode < 200 || response.statusCode >= 300) {
@@ -69,8 +82,133 @@ class MeshMapNodesService {
         )
         .toList();
 
-    _cachedNodes = nodes;
-    _cachedAt = now;
+    await _storeCache(nodes, cachedAt: now);
     return nodes;
   }
+
+  static Future<List<MeshMapNode>> loadCachedNodes({
+    Duration cacheTtl = _cacheTtl,
+  }) async {
+    final now = DateTime.now();
+    if (_cachedNodes != null &&
+        _cachedAt != null &&
+        now.difference(_cachedAt!) < cacheTtl) {
+      return _cachedNodes!;
+    }
+
+    final prefs = await SharedPreferences.getInstance();
+    final cachedAtMs = prefs.getInt(_cacheTimestampKey);
+    final cachedJson = prefs.getString(_cacheKey);
+    if (cachedAtMs == null || cachedJson == null) {
+      _cachedNodes = null;
+      _cachedAt = null;
+      return const [];
+    }
+
+    final cachedAt = DateTime.fromMillisecondsSinceEpoch(cachedAtMs);
+    if (now.difference(cachedAt) >= cacheTtl) {
+      _cachedNodes = null;
+      _cachedAt = cachedAt;
+      return const [];
+    }
+
+    final decoded = jsonDecode(cachedJson) as List<dynamic>;
+    final nodes = decoded
+        .whereType<Map<String, dynamic>>()
+        .map(MeshMapNode.fromJson)
+        .where(
+          (n) => n.publicKey.isNotEmpty && n.latitude != 0 && n.longitude != 0,
+        )
+        .toList();
+    _cachedNodes = nodes;
+    _cachedAt = cachedAt;
+    return nodes;
+  }
+
+  static Future<bool> hasFreshCache({Duration cacheTtl = _cacheTtl}) async {
+    final nodes = await loadCachedNodes(cacheTtl: cacheTtl);
+    return nodes.isNotEmpty;
+  }
+
+  static Future<void> syncInBackgroundIfStale({
+    Duration cacheTtl = _cacheTtl,
+    http.Client? client,
+  }) async {
+    final now = DateTime.now();
+    if (_cachedAt != null && now.difference(_cachedAt!) < cacheTtl) {
+      return;
+    }
+
+    final cached = await loadCachedNodes(cacheTtl: cacheTtl);
+    if (cached.isNotEmpty && _cachedAt != null) {
+      return;
+    }
+
+    if (_ongoingSync != null) {
+      return _ongoingSync!;
+    }
+
+    _ongoingSync = () async {
+      try {
+        await fetchNodes(
+          forceRefresh: true,
+          cacheTtl: cacheTtl,
+          allowNetwork: true,
+          client: client,
+        );
+      } catch (_) {
+        // Background refresh is best-effort only.
+      } finally {
+        _ongoingSync = null;
+      }
+    }();
+
+    return _ongoingSync!;
+  }
+
+  static Future<void> clearCache() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_cacheKey);
+    await prefs.remove(_cacheTimestampKey);
+    _cachedNodes = null;
+    _cachedAt = null;
+  }
+
+  static Future<DateTime?> cachedAt() async {
+    if (_cachedAt != null) return _cachedAt;
+    final prefs = await SharedPreferences.getInstance();
+    final cachedAtMs = prefs.getInt(_cacheTimestampKey);
+    if (cachedAtMs == null) return null;
+    _cachedAt = DateTime.fromMillisecondsSinceEpoch(cachedAtMs);
+    return _cachedAt;
+  }
+
+  static bool isRepeater(MeshMapNode node) => node.type == repeaterType;
+
+  static Future<void> _storeCache(
+    List<MeshMapNode> nodes, {
+    required DateTime cachedAt,
+  }) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(
+      _cacheKey,
+      jsonEncode(
+        nodes
+            .map(
+              (node) => {
+                'type': node.type,
+                'name': node.name,
+                'public_key': node.publicKey,
+                'latitude': node.latitude,
+                'longitude': node.longitude,
+                'updated_at': node.updatedAtMs,
+              },
+            )
+            .toList(),
+      ),
+    );
+    await prefs.setInt(_cacheTimestampKey, cachedAt.millisecondsSinceEpoch);
+    _cachedNodes = nodes;
+    _cachedAt = cachedAt;
+  }
 }

lib/services/message_destination_preferences.dart

@@ -7,6 +7,7 @@ class MessageDestinationPreferences {
   static const String _recipientPublicKeyKey = 'message_recipient_public_key';
 
   /// Destination types
+  static const String destinationTypeAll = 'all';
   static const String destinationTypeChannel = 'channel';
   static const String destinationTypeContact = 'contact';
   static const String destinationTypeRoom = 'room';
@@ -24,14 +25,11 @@ class MessageDestinationPreferences {
 
     final publicKey = prefs.getString(_recipientPublicKeyKey);
 
-    return {
-      'type': type,
-      'publicKey': ?publicKey,
-    };
+    return {'type': type, 'publicKey': ?publicKey};
   }
 
   /// Save the selected destination
-  /// [type] - one of: destinationTypeChannel, destinationTypeContact, destinationTypeRoom
+  /// [type] - one of: destinationTypeAll, destinationTypeChannel, destinationTypeContact, destinationTypeRoom
   /// [recipientPublicKey] - hex string of recipient's public key (required for contact/room)
   static Future<void> setDestination(
     String type, {
@@ -58,6 +56,8 @@ class MessageDestinationPreferences {
   /// Get display name for destination type
   static String getDestinationTypeName(String type) {
     switch (type) {
+      case destinationTypeAll:
+        return 'All';
       case destinationTypeChannel:
         return 'Channel';
       case destinationTypeContact:

lib/services/message_storage_service.dart

@@ -5,6 +5,7 @@ import '../models/message.dart';
 import '../models/message_contact_location.dart';
 import '../models/message_reception_details.dart';
 import '../models/message_transfer_details.dart';
+import '../models/message_route_metadata.dart';
 import 'package:latlong2/latlong.dart';
 
 /// Service for persisting messages to local storage
@@ -16,6 +17,10 @@ class MessageStorageService {
       'stored_message_reception_details';
   static const String _messageTransferDetailsKey =
       'stored_message_transfer_details';
+  static const String _messageRouteMetadataKey =
+      'stored_message_route_metadata';
+  static const String _embeddedReceptionDetailsKey = 'storedReceptionDetails';
+  static const String _legacyPathBytesKey = 'storedPathBytes';
   static const int _maxStoredMessages = 1000; // Store up to 1000 messages
 
   /// Save messages to persistent storage
@@ -24,12 +29,21 @@ class MessageStorageService {
     Map<String, MessageContactLocation> messageContactLocations = const {},
     Map<String, MessageReceptionDetails> messageReceptionDetails = const {},
     Map<String, MessageTransferDetails> messageTransferDetails = const {},
+    Map<String, MessageRouteMetadata> messageRouteMetadata = const {},
   }) async {
     try {
       final prefs = await SharedPreferences.getInstance();
 
-      // Convert messages to JSON
-      final jsonList = messages.map((msg) => _messageToJson(msg)).toList();
+      // Convert messages to JSON and embed path bytes as a fallback so they
+      // survive restore even if the sidecar reception-details entry is absent.
+      final jsonList = messages
+          .map(
+            (msg) => _messageToJson(
+              msg,
+              receptionDetails: messageReceptionDetails[msg.id],
+            ),
+          )
+          .toList();
 
       // Limit to max stored messages (keep most recent)
       final limitedList = jsonList.length > _maxStoredMessages
@@ -44,6 +58,7 @@ class MessageStorageService {
       final locationJson = <String, dynamic>{};
       final receptionJson = <String, dynamic>{};
       final transferJson = <String, dynamic>{};
+      final routeMetadataJson = <String, dynamic>{};
       for (final entry in messageContactLocations.entries) {
         if (retainedMessageIds.contains(entry.key)) {
           locationJson[entry.key] = entry.value.toJson();
@@ -59,6 +74,11 @@ class MessageStorageService {
           transferJson[entry.key] = entry.value.toJson();
         }
       }
+      for (final entry in messageRouteMetadata.entries) {
+        if (retainedMessageIds.contains(entry.key)) {
+          routeMetadataJson[entry.key] = entry.value.toJson();
+        }
+      }
       await prefs.setString(
         _messageContactLocationsKey,
         jsonEncode(locationJson),
@@ -71,6 +91,10 @@ class MessageStorageService {
         _messageTransferDetailsKey,
         jsonEncode(transferJson),
       );
+      await prefs.setString(
+        _messageRouteMetadataKey,
+        jsonEncode(routeMetadataJson),
+      );
 
       debugPrint(
         '✅ [MessageStorage] Saved ${limitedList.length} messages to storage',
@@ -115,24 +139,36 @@ class MessageStorageService {
     try {
       final prefs = await SharedPreferences.getInstance();
       final jsonString = prefs.getString(_messageReceptionDetailsKey);
-      if (jsonString == null || jsonString.isEmpty) {
-        return const {};
-      }
-
-      final decoded = jsonDecode(jsonString);
-      if (decoded is! Map<String, dynamic>) {
-        return const {};
-      }
-
       final result = <String, MessageReceptionDetails>{};
-      for (final entry in decoded.entries) {
-        final value = entry.value;
-        if (value is! Map<String, dynamic>) continue;
-        final snapshot = MessageReceptionDetails.fromJson(value);
-        if (snapshot != null) {
-          result[entry.key] = snapshot;
+      if (jsonString != null && jsonString.isNotEmpty) {
+        final decoded = jsonDecode(jsonString);
+        if (decoded is Map<String, dynamic>) {
+          for (final entry in decoded.entries) {
+            final value = entry.value;
+            if (value is! Map<String, dynamic>) continue;
+            final snapshot = MessageReceptionDetails.fromJson(value);
+            if (snapshot != null) {
+              result[entry.key] = snapshot;
+            }
+          }
         }
       }
+
+      final embeddedReceptionDetails = await _loadEmbeddedReceptionDetails();
+      embeddedReceptionDetails.forEach((messageId, snapshot) {
+        result.putIfAbsent(messageId, () => snapshot);
+      });
+
+      final fallbackPathBytes = await _loadLegacyPathBytesFromMessages();
+      fallbackPathBytes.forEach((messageId, pathBytes) {
+        result.putIfAbsent(
+          messageId,
+          () => MessageReceptionDetails(
+            capturedAt: DateTime.fromMillisecondsSinceEpoch(0),
+            pathBytes: pathBytes,
+          ),
+        );
+      });
       return result;
     } catch (e) {
       debugPrint('❌ [MessageStorage] Error loading reception details: $e');
@@ -170,6 +206,32 @@ class MessageStorageService {
     }
   }
 
+  Future<Map<String, MessageRouteMetadata>> loadMessageRouteMetadata() async {
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      final jsonString = prefs.getString(_messageRouteMetadataKey);
+      if (jsonString == null || jsonString.isEmpty) {
+        return const {};
+      }
+
+      final decoded = jsonDecode(jsonString);
+      if (decoded is! Map<String, dynamic>) {
+        return const {};
+      }
+
+      final result = <String, MessageRouteMetadata>{};
+      for (final entry in decoded.entries) {
+        final value = entry.value;
+        if (value is! Map<String, dynamic>) continue;
+        result[entry.key] = MessageRouteMetadata.fromJson(value);
+      }
+      return result;
+    } catch (e) {
+      debugPrint('❌ [MessageStorage] Error loading route metadata: $e');
+      return const {};
+    }
+  }
+
   /// Load messages from persistent storage
   Future<List<Message>> loadMessages() async {
     try {
@@ -206,6 +268,7 @@ class MessageStorageService {
       await prefs.remove(_messageContactLocationsKey);
       await prefs.remove(_messageReceptionDetailsKey);
       await prefs.remove(_messageTransferDetailsKey);
+      await prefs.remove(_messageRouteMetadataKey);
       debugPrint('✅ [MessageStorage] Cleared all stored messages');
     } catch (e) {
       debugPrint('❌ [MessageStorage] Error clearing messages: $e');
@@ -237,7 +300,10 @@ class MessageStorageService {
   }
 
   /// Convert Message to JSON
-  Map<String, dynamic> _messageToJson(Message message) {
+  Map<String, dynamic> _messageToJson(
+    Message message, {
+    MessageReceptionDetails? receptionDetails,
+  }) {
     return {
       'id': message.id,
       'messageType': message.messageType.name,
@@ -297,9 +363,67 @@ class MessageStorageService {
             },
           )
           .toList(),
+      if (receptionDetails != null)
+        _embeddedReceptionDetailsKey: receptionDetails.toJson(),
+      if (receptionDetails?.pathBytes case final pathBytes?)
+        _legacyPathBytesKey: List<int>.from(pathBytes),
     };
   }
 
+  Future<Map<String, MessageReceptionDetails>>
+  _loadEmbeddedReceptionDetails() async {
+    final prefs = await SharedPreferences.getInstance();
+    final jsonString = prefs.getString(_messagesKey);
+    if (jsonString == null || jsonString.isEmpty) {
+      return const {};
+    }
+
+    final decoded = jsonDecode(jsonString);
+    if (decoded is! List) {
+      return const {};
+    }
+
+    final result = <String, MessageReceptionDetails>{};
+    for (final entry in decoded) {
+      if (entry is! Map<String, dynamic>) continue;
+      final messageId = entry['id'];
+      final embedded = entry[_embeddedReceptionDetailsKey];
+      if (messageId is! String || embedded is! Map<String, dynamic>) continue;
+      final snapshot = MessageReceptionDetails.fromJson(embedded);
+      if (snapshot == null) continue;
+      result[messageId] = snapshot;
+    }
+    return result;
+  }
+
+  Future<Map<String, List<int>>> _loadLegacyPathBytesFromMessages() async {
+    final prefs = await SharedPreferences.getInstance();
+    final jsonString = prefs.getString(_messagesKey);
+    if (jsonString == null || jsonString.isEmpty) {
+      return const {};
+    }
+
+    final decoded = jsonDecode(jsonString);
+    if (decoded is! List) {
+      return const {};
+    }
+
+    final result = <String, List<int>>{};
+    for (final entry in decoded) {
+      if (entry is! Map<String, dynamic>) continue;
+      final messageId = entry['id'];
+      final pathBytes = entry[_legacyPathBytesKey];
+      if (messageId is! String || pathBytes is! List) continue;
+      final normalized = pathBytes
+          .whereType<num>()
+          .map((b) => b.toInt())
+          .toList();
+      if (normalized.isEmpty) continue;
+      result[messageId] = normalized;
+    }
+    return result;
+  }
+
   /// Convert JSON to Message
   Message? _messageFromJson(Map<String, dynamic> json) {
     try {

lib/services/messaging_route_preferences.dart

@@ -0,0 +1,46 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+class MessagingRoutePreferences {
+  static const bool defaultAutoRouteRotationEnabled = false;
+  static const bool defaultClearPathOnMaxRetry = false;
+  static const bool defaultNearestRelayFallbackEnabled = true;
+
+  static const String _autoRouteRotationKey =
+      'messaging_auto_route_rotation_enabled';
+  static const String _clearPathOnMaxRetryKey =
+      'messaging_clear_path_on_max_retry';
+  static const String _nearestRelayFallbackKey =
+      'messaging_nearest_relay_fallback_enabled';
+
+  static Future<bool> getAutoRouteRotationEnabled() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getBool(_autoRouteRotationKey) ??
+        defaultAutoRouteRotationEnabled;
+  }
+
+  static Future<void> setAutoRouteRotationEnabled(bool enabled) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool(_autoRouteRotationKey, enabled);
+  }
+
+  static Future<bool> getClearPathOnMaxRetry() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getBool(_clearPathOnMaxRetryKey) ?? defaultClearPathOnMaxRetry;
+  }
+
+  static Future<void> setClearPathOnMaxRetry(bool enabled) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool(_clearPathOnMaxRetryKey, enabled);
+  }
+
+  static Future<bool> getNearestRelayFallbackEnabled() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getBool(_nearestRelayFallbackKey) ??
+        defaultNearestRelayFallbackEnabled;
+  }
+
+  static Future<void> setNearestRelayFallbackEnabled(bool enabled) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool(_nearestRelayFallbackKey, enabled);
+  }
+}

lib/services/nearest_router_selector.dart

@@ -0,0 +1,69 @@
+import 'package:geolocator/geolocator.dart';
+
+import '../models/contact.dart';
+
+class NearestRouterSelector {
+  const NearestRouterSelector();
+
+  Contact? select({
+    required Position? senderPosition,
+    required List<Contact> repeaters,
+    required Contact recipient,
+  }) {
+    if (senderPosition == null) {
+      return null;
+    }
+
+    final eligible = repeaters.where((contact) {
+      if (contact.publicKeyHex == recipient.publicKeyHex) {
+        return false;
+      }
+      if (!contact.isRecentlySeen) {
+        return false;
+      }
+      return contact.displayLocation != null;
+    }).toList();
+    if (eligible.isEmpty) {
+      return null;
+    }
+
+    eligible.sort((a, b) {
+      final locationA = a.displayLocation!;
+      final locationB = b.displayLocation!;
+      final distanceA = Geolocator.distanceBetween(
+        senderPosition.latitude,
+        senderPosition.longitude,
+        locationA.latitude,
+        locationA.longitude,
+      );
+      final distanceB = Geolocator.distanceBetween(
+        senderPosition.latitude,
+        senderPosition.longitude,
+        locationB.latitude,
+        locationB.longitude,
+      );
+      final distanceCompare = distanceA.compareTo(distanceB);
+      if (distanceCompare != 0) {
+        return distanceCompare;
+      }
+
+      final advertCompare = b.lastAdvert.compareTo(a.lastAdvert);
+      if (advertCompare != 0) {
+        return advertCompare;
+      }
+
+      final hopCompare = a.routeHopCount.compareTo(b.routeHopCount);
+      if (hopCompare != 0) {
+        return hopCompare;
+      }
+
+      final nameCompare = a.advName.compareTo(b.advName);
+      if (nameCompare != 0) {
+        return nameCompare;
+      }
+      return a.publicKeyHex.compareTo(b.publicKeyHex);
+    });
+
+    return eligible.first;
+  }
+}

lib/services/notification_service.dart

@@ -402,10 +402,13 @@ class NotificationService {
           (DateTime.now().millisecondsSinceEpoch % 1000);
 
       // Build notification title and body
+      final resolvedChannelName = channelName?.trim().isNotEmpty == true
+          ? channelName!.trim()
+          : (localizations?.publicChannel ?? 'Public');
       final title = isChannelMessage
           ? (localizations != null
-                ? '${localizations.channel}: ${channelName ?? "Public"}'
-                : 'Channel: ${channelName ?? "Public"}')
+                ? '${localizations.channel}: $resolvedChannelName'
+                : 'Channel: $resolvedChannelName')
           : (localizations != null
                 ? '${localizations.newMessage} ${localizations.from} $senderName'
                 : 'New message from $senderName');
@@ -550,7 +553,7 @@ class NotificationService {
       final title = localizations?.updateAvailable ?? 'App Update Available';
       final body = localizations != null
           ? '${localizations.currentVersion}: $currentVersion\n'
-              '${localizations.latestVersion}: $latestVersion'
+                '${localizations.latestVersion}: $latestVersion'
           : 'Current: $currentVersion\nLatest: $latestVersion';
 
       // Android notification details

lib/services/packet_capture_storage_service.dart

@@ -61,6 +61,9 @@ class PacketCaptureStorageService {
   File? _file;
 
   Future<File> _resolveFile() async {
+    if (kIsWeb) {
+      throw UnsupportedError('Packet capture file storage is not supported on web');
+    }
     if (_file != null) return _file!;
     final dir = await getApplicationSupportDirectory();
     final file = File('${dir.path}/$_fileName');
@@ -73,6 +76,7 @@ class PacketCaptureStorageService {
 
   Future<void> appendLogs(List<BlePacketLog> logs) async {
     if (logs.isEmpty) return;
+    if (kIsWeb) return;
     try {
       final file = await _resolveFile();
       final sink = file.openWrite(mode: FileMode.append);
@@ -98,6 +102,7 @@ class PacketCaptureStorageService {
   }
 
   Future<List<StoredPacketCapture>> loadRecent({int limit = 500}) async {
+    if (kIsWeb) return const [];
     try {
       final file = await _resolveFile();
       if (!await file.exists()) return const [];
@@ -116,6 +121,7 @@ class PacketCaptureStorageService {
   }
 
   Future<int> count() async {
+    if (kIsWeb) return 0;
     try {
       final file = await _resolveFile();
       if (!await file.exists()) return 0;
@@ -127,6 +133,7 @@ class PacketCaptureStorageService {
   }
 
   Future<void> clear() async {
+    if (kIsWeb) return;
     try {
       final file = await _resolveFile();
       if (await file.exists()) {

lib/services/path_history_service.dart

@@ -0,0 +1,282 @@
+import 'dart:convert';
+
+import 'package:flutter/foundation.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../models/contact.dart';
+import '../models/path_history.dart';
+import '../models/path_selection.dart';
+import '../utils/log_rx_route_decoder.dart';
+
+class PathHistoryService {
+  static const String _storageKey = 'contact_path_history_v1';
+  static const int _maxDirectPaths = 20;
+  static const int _topRotationCount = 3;
+
+  final Map<String, ContactPathHistory> _cache = {};
+  bool _isLoaded = false;
+
+  Future<void> initialize() async {
+    if (_isLoaded) return;
+    final prefs = await SharedPreferences.getInstance();
+    final raw = prefs.getString(_storageKey);
+    if (raw == null || raw.isEmpty) {
+      _isLoaded = true;
+      return;
+    }
+
+    try {
+      final decoded = jsonDecode(raw);
+      if (decoded is Map<String, dynamic>) {
+        for (final entry in decoded.entries) {
+          final value = entry.value;
+          if (value is Map<String, dynamic>) {
+            _cache[entry.key] = ContactPathHistory.fromJson(entry.key, value);
+          }
+        }
+      }
+    } catch (error) {
+      debugPrint('⚠️ [PathHistoryService] Failed to load history: $error');
+    }
+    _isLoaded = true;
+  }
+
+  Future<void> recordLearnedPath(Contact contact) async {
+    await initialize();
+    if (!contact.routeHasPath || contact.routeHopCount <= 0) {
+      return;
+    }
+
+    final history = _historyFor(contact.publicKeyHex);
+    final signature = _signature(contact.routePathBytes);
+    final existing = _findDirectPath(history.directPaths, signature);
+    final updated = PathRecord(
+      pathBytes: contact.routePathBytes.toList(),
+      hopCount: contact.routeHopCount,
+      hashSize: contact.routeHashSize,
+      source: existing?.source ?? PathRecordSource.learned,
+      successCount: existing?.successCount ?? 0,
+      failureCount: existing?.failureCount ?? 0,
+      lastRoundTripTimeMs: existing?.lastRoundTripTimeMs ?? 0,
+      lastUsedAt: DateTime.now(),
+    );
+
+    await _saveHistory(
+      contact.publicKeyHex,
+      history.copyWith(
+        directPaths: _upsertDirectPath(history.directPaths, updated),
+      ),
+    );
+  }
+
+  Future<void> recordReceivedBytePath(
+    String contactPublicKeyHex,
+    List<int> pathBytes,
+    int hashSize,
+  ) async {
+    await initialize();
+    if (pathBytes.isEmpty) {
+      return;
+    }
+    if (hashSize < 1 || hashSize > 3) {
+      return;
+    }
+    if (pathBytes.length % hashSize != 0) {
+      return;
+    }
+
+    final normalizedPathBytes = LogRxRouteDecoder.reverseHopBytes(
+      pathBytes,
+      hashSize: hashSize,
+    );
+
+    final history = _historyFor(contactPublicKeyHex);
+    final signature = normalizedPathBytes
+        .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
+        .join();
+    final existing = _findDirectPath(history.directPaths, signature);
+    final updated = PathRecord(
+      pathBytes: normalizedPathBytes,
+      hopCount: normalizedPathBytes.length ~/ hashSize,
+      hashSize: hashSize,
+      source: PathRecordSource.observed,
+      successCount: existing?.successCount ?? 0,
+      failureCount: existing?.failureCount ?? 0,
+      lastRoundTripTimeMs: existing?.lastRoundTripTimeMs ?? 0,
+      lastUsedAt: DateTime.now(),
+    );
+
+    await _saveHistory(
+      contactPublicKeyHex,
+      history.copyWith(
+        directPaths: _upsertDirectPath(history.directPaths, updated),
+      ),
+    );
+  }
+
+  Future<PathSelection> getSelectionForContact(
+    Contact contact, {
+    required bool autoRouteRotationEnabled,
+  }) async {
+    await initialize();
+    await recordLearnedPath(contact);
+
+    if (contact.routeHasPath && contact.routeHopCount > 0) {
+      return PathSelection(
+        mode: PathSelectionMode.directCurrent,
+        pathBytes: Uint8List.fromList(contact.routePathBytes),
+        hopCount: contact.routeHopCount,
+        hashSize: contact.routeHashSize,
+      );
+    }
+
+    if (!autoRouteRotationEnabled) {
+      return PathSelection.flood();
+    }
+
+    final history = _historyFor(contact.publicKeyHex);
+    final ranked = List<PathRecord>.from(history.directPaths)
+      ..sort(_comparePathRecords);
+    final topPaths = ranked.take(_topRotationCount).toList();
+    if (topPaths.isEmpty) {
+      final nextFloodHistory = history.copyWith(
+        rotationIndex: history.rotationIndex + 1,
+      );
+      await _saveHistory(contact.publicKeyHex, nextFloodHistory);
+      return PathSelection.flood();
+    }
+
+    final selections =
+        topPaths
+            .map(
+              (record) => PathSelection(
+                mode: PathSelectionMode.directHistorical,
+                pathBytes: Uint8List.fromList(record.pathBytes),
+                hopCount: record.hopCount,
+                hashSize: record.hashSize,
+              ),
+            )
+            .toList()
+          ..add(PathSelection.flood());
+
+    final index = history.rotationIndex % selections.length;
+    final updatedHistory = history.copyWith(
+      rotationIndex: history.rotationIndex + 1,
+    );
+    await _saveHistory(contact.publicKeyHex, updatedHistory);
+    return selections[index];
+  }
+
+  Future<void> recordPathResult(
+    String contactPublicKeyHex,
+    PathSelection selection, {
+    required bool success,
+    int? roundTripTimeMs,
+  }) async {
+    await initialize();
+    final history = _historyFor(contactPublicKeyHex);
+    if (selection.usesFlood) {
+      final current = history.floodStats;
+      await _saveHistory(
+        contactPublicKeyHex,
+        history.copyWith(
+          floodStats: current.copyWith(
+            successCount: current.successCount + (success ? 1 : 0),
+            failureCount: current.failureCount + (success ? 0 : 1),
+            lastRoundTripTimeMs: success
+                ? (roundTripTimeMs ?? current.lastRoundTripTimeMs)
+                : current.lastRoundTripTimeMs,
+            lastUsedAt: DateTime.now(),
+          ),
+        ),
+      );
+      return;
+    }
+
+    final signature = _signature(selection.pathBytes);
+    final existing = _findDirectPath(history.directPaths, signature);
+    final updated = PathRecord(
+      pathBytes: selection.pathBytes.toList(),
+      hopCount: selection.hopCount,
+      hashSize: selection.hashSize,
+      source: existing?.source ?? PathRecordSource.learned,
+      successCount: (existing?.successCount ?? 0) + (success ? 1 : 0),
+      failureCount: (existing?.failureCount ?? 0) + (success ? 0 : 1),
+      lastRoundTripTimeMs: success
+          ? (roundTripTimeMs ?? existing?.lastRoundTripTimeMs ?? 0)
+          : (existing?.lastRoundTripTimeMs ?? 0),
+      lastUsedAt: DateTime.now(),
+    );
+    await _saveHistory(
+      contactPublicKeyHex,
+      history.copyWith(
+        directPaths: _upsertDirectPath(history.directPaths, updated),
+      ),
+    );
+  }
+
+  ContactPathHistory historyFor(String contactPublicKeyHex) {
+    return _cache[contactPublicKeyHex] ??
+        ContactPathHistory.empty(contactPublicKeyHex);
+  }
+
+  ContactPathHistory _historyFor(String contactPublicKeyHex) {
+    return _cache.putIfAbsent(
+      contactPublicKeyHex,
+      () => ContactPathHistory.empty(contactPublicKeyHex),
+    );
+  }
+
+  Future<void> _saveHistory(
+    String contactPublicKeyHex,
+    ContactPathHistory history,
+  ) async {
+    _cache[contactPublicKeyHex] = history;
+    final prefs = await SharedPreferences.getInstance();
+    final payload = <String, dynamic>{};
+    for (final entry in _cache.entries) {
+      payload[entry.key] = entry.value.toJson();
+    }
+    await prefs.setString(_storageKey, jsonEncode(payload));
+  }
+
+  List<PathRecord> _upsertDirectPath(
+    List<PathRecord> existing,
+    PathRecord updatedRecord,
+  ) {
+    final updated = List<PathRecord>.from(existing)
+      ..removeWhere((record) => record.signature == updatedRecord.signature)
+      ..insert(0, updatedRecord);
+    if (updated.length > _maxDirectPaths) {
+      return updated.take(_maxDirectPaths).toList();
+    }
+    return updated;
+  }
+
+  int _comparePathRecords(PathRecord a, PathRecord b) {
+    final successRateCompare = b.successRate.compareTo(a.successRate);
+    if (successRateCompare != 0) return successRateCompare;
+
+    final successCountCompare = b.successCount.compareTo(a.successCount);
+    if (successCountCompare != 0) return successCountCompare;
+
+    final aRtt = a.lastRoundTripTimeMs == 0 ? 1 << 30 : a.lastRoundTripTimeMs;
+    final bRtt = b.lastRoundTripTimeMs == 0 ? 1 << 30 : b.lastRoundTripTimeMs;
+    final rttCompare = aRtt.compareTo(bRtt);
+    if (rttCompare != 0) return rttCompare;
+
+    return b.lastUsedAt.compareTo(a.lastUsedAt);
+  }
+
+  PathRecord? _findDirectPath(List<PathRecord> records, String signature) {
+    for (final record in records) {
+      if (record.signature == signature) {
+        return record;
+      }
+    }
+    return null;
+  }
+
+  String _signature(Uint8List bytes) =>
+      bytes.map((byte) => byte.toRadixString(16).padLeft(2, '0')).join();
+}

lib/services/voice_codec_preferences.dart

@@ -0,0 +1,21 @@
+import 'package:shared_preferences/shared_preferences.dart';
+import '../utils/voice_message_parser.dart';
+
+class VoiceCodecPreferences {
+  static const String _codecKey = 'voice_codec';
+  static const VoiceCodecKind defaultCodec = VoiceCodecKind.codec2;
+
+  static Future<VoiceCodecKind> getCodec() async {
+    final prefs = await SharedPreferences.getInstance();
+    final raw = prefs.getString(_codecKey);
+    return VoiceCodecKind.values.firstWhere(
+      (codec) => codec.name == raw,
+      orElse: () => defaultCodec,
+    );
+  }
+
+  static Future<void> setCodec(VoiceCodecKind codec) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(_codecKey, codec.name);
+  }
+}

lib/services/voice_codec_service_io.dart

@@ -3,18 +3,22 @@ import 'package:codec2_flutter/codec2_flutter.dart';
 import 'package:flutter/foundation.dart';
 import '../utils/voice_message_parser.dart';
 
-export 'package:codec2_flutter/codec2_flutter.dart' show Codec2Mode;
-
-/// Maps [VoicePacketMode] to the [Codec2Mode] enum from the FFI plugin.
 Codec2Mode codec2ModeFor(VoicePacketMode pktMode) {
   switch (pktMode) {
-    case VoicePacketMode.mode3200: return Codec2Mode.mode3200;
-    case VoicePacketMode.mode1600: return Codec2Mode.mode1600;
-    case VoicePacketMode.mode1400: return Codec2Mode.mode1400;
-    case VoicePacketMode.mode700c: return Codec2Mode.mode700c;
-    case VoicePacketMode.mode1200: return Codec2Mode.mode1200;
-    case VoicePacketMode.mode1300: return Codec2Mode.mode1300;
-    case VoicePacketMode.mode2400: return Codec2Mode.mode2400;
+    case VoicePacketMode.mode3200:
+      return Codec2Mode.mode3200;
+    case VoicePacketMode.mode1600:
+      return Codec2Mode.mode1600;
+    case VoicePacketMode.mode1400:
+      return Codec2Mode.mode1400;
+    case VoicePacketMode.mode700c:
+      return Codec2Mode.mode700c;
+    case VoicePacketMode.mode1200:
+      return Codec2Mode.mode1200;
+    case VoicePacketMode.mode1300:
+      return Codec2Mode.mode1300;
+    case VoicePacketMode.mode2400:
+      return Codec2Mode.mode2400;
   }
 }
 
@@ -39,14 +43,11 @@ class VoiceCodecService {
     }
   }
 
-  /// Encode [pcm] (Int16 samples, 8000 Hz mono) with [mode].
-  /// Returns the raw Codec2-encoded bytes.
   Future<Uint8List> encode(Int16List pcm, VoicePacketMode mode) {
     _ensureCodec2Supported();
     return Codec2.encodeInIsolate(pcm, codec2ModeFor(mode));
   }
 
-  /// Decode [codec2Bytes] back to Int16 PCM (8000 Hz mono) with [mode].
   Future<Int16List> decode(Uint8List codec2Bytes, VoicePacketMode mode) {
     _ensureCodec2Supported();
     return Codec2.decodeInIsolate(codec2Bytes, codec2ModeFor(mode));
@@ -59,24 +60,14 @@ class VoiceCodecService {
     VoicePacketMode mode,
   ) async {
     _ensureCodec2Supported();
-    final c2Mode = codec2ModeFor(mode);
-    final c2 = Codec2.create(c2Mode);
-    final spf = c2.samplesPerFrame;
-    c2.destroy();
-
-    // Estimate total samples (use actual data or silence per missing packet)
     final all = <Int16List>[];
     for (final pkt in packets) {
       if (pkt == null || pkt.codec2Data.isEmpty) {
-        // Silence for missing packet — duration approximated by mode
-        final silenceSamples = (codec2ModeFor(mode).framesPerSecond) * spf;
-        all.add(Int16List(silenceSamples));
+        all.add(Int16List(mode.samplesPerPacket));
       } else {
-        final decoded = await Codec2.decodeInIsolate(pkt.codec2Data, c2Mode);
-        all.add(decoded);
+        all.add(await decode(pkt.codec2Data, mode));
       }
     }
-
     final total = all.fold<int>(0, (sum, l) => sum + l.length);
     final result = Int16List(total);
     var offset = 0;

lib/services/voice_codec_service_stub.dart

@@ -1,7 +1,6 @@
 import 'dart:typed_data';
 import '../utils/voice_message_parser.dart';
 
-/// Web/unsupported platform stub — Codec2 FFI is not available.
 enum Codec2Mode {
   mode3200(0),
   mode2400(1),
@@ -19,13 +18,20 @@ enum Codec2Mode {
 
   int get bytesPerSecond {
     switch (this) {
-      case mode3200: return 400;
-      case mode700c: return 100;
-      case mode1200: return 150;
-      case mode1300: return 175;
-      case mode1400: return 175;
-      case mode1600: return 200;
-      case mode2400: return 300;
+      case mode3200:
+        return 400;
+      case mode700c:
+        return 100;
+      case mode1200:
+        return 150;
+      case mode1300:
+        return 175;
+      case mode1400:
+        return 175;
+      case mode1600:
+        return 200;
+      case mode2400:
+        return 300;
     }
   }
 
@@ -40,13 +46,20 @@ enum Codec2Mode {
 
 Codec2Mode codec2ModeFor(VoicePacketMode pktMode) {
   switch (pktMode) {
-    case VoicePacketMode.mode3200: return Codec2Mode.mode3200;
-    case VoicePacketMode.mode1600: return Codec2Mode.mode1600;
-    case VoicePacketMode.mode1400: return Codec2Mode.mode1400;
-    case VoicePacketMode.mode700c: return Codec2Mode.mode700c;
-    case VoicePacketMode.mode1200: return Codec2Mode.mode1200;
-    case VoicePacketMode.mode1300: return Codec2Mode.mode1300;
-    case VoicePacketMode.mode2400: return Codec2Mode.mode2400;
+    case VoicePacketMode.mode3200:
+      return Codec2Mode.mode3200;
+    case VoicePacketMode.mode1600:
+      return Codec2Mode.mode1600;
+    case VoicePacketMode.mode1400:
+      return Codec2Mode.mode1400;
+    case VoicePacketMode.mode700c:
+      return Codec2Mode.mode700c;
+    case VoicePacketMode.mode1200:
+      return Codec2Mode.mode1200;
+    case VoicePacketMode.mode1300:
+      return Codec2Mode.mode1300;
+    case VoicePacketMode.mode2400:
+      return Codec2Mode.mode2400;
   }
 }
 
@@ -66,6 +79,5 @@ class VoiceCodecService {
   Future<Int16List> decodePackets(
     List<VoicePacket?> packets,
     VoicePacketMode mode,
-  ) =>
-      Future.error(UnsupportedError('Voice not supported on web'));
+  ) => Future.error(UnsupportedError('Voice not supported on web'));
 }

lib/services/voice_player_service.dart

@@ -5,7 +5,7 @@ import 'package:audioplayers/audioplayers.dart';
 import 'package:flutter/foundation.dart';
 import 'package:path_provider/path_provider.dart';
 
-/// Plays decoded 8000 Hz / 16-bit mono PCM samples by writing a WAV file
+/// Plays decoded mono PCM samples by writing a WAV file
 /// to the system temp directory and using [AudioPlayer].
 class VoicePlayerService {
   final AudioPlayer _player = AudioPlayer();
@@ -49,16 +49,17 @@ class VoicePlayerService {
     });
   }
 
-  /// Play [pcmSamples] (Int16, 8000 Hz, mono).
-  Future<void> play(Int16List pcmSamples) async {
+  Future<void> play(Int16List pcmSamples, {required int sampleRateHz}) async {
     debugPrint('🔊 [VoicePlayer] play() called, ${pcmSamples.length} samples');
     if (_isPlaying) await stop();
     _position = Duration.zero;
-    _duration = Duration(milliseconds: (pcmSamples.length * 1000) ~/ 8000);
+    _duration = Duration(
+      milliseconds: (pcmSamples.length * 1000) ~/ sampleRateHz,
+    );
     _playbackStartedAt = DateTime.now();
     _events.add(null);
 
-    final wavBytes = _buildWav(pcmSamples, sampleRate: 8000);
+    final wavBytes = _buildWav(pcmSamples, sampleRate: sampleRateHz);
     final tmpDir = await getTemporaryDirectory();
     final file = File('${tmpDir.path}/vc_voice.wav');
     await file.writeAsBytes(wavBytes);

lib/services/voice_recorder_service.dart

@@ -4,7 +4,7 @@ import 'dart:typed_data';
 import 'package:flutter/foundation.dart';
 import 'package:record/record.dart';
 
-/// Captures raw PCM audio at 8000 Hz, 16-bit mono.
+/// Captures raw PCM audio at a codec-selected sample rate, 16-bit mono.
 ///
 /// [startCapture] returns a [Stream<Int16List>] that emits chunks of PCM
 /// samples every [chunkDuration].  Call [stopCapture] to end recording.
@@ -27,12 +27,16 @@ class VoiceRecorderService {
   /// [enableBandPassFilter] applies voice-tuned band-pass filtering when true.
   /// [enableCompressor] normalizes speech dynamics before encoding.
   /// [enableLimiter] protects against clipping peaks before encoding.
-  /// The returned stream emits [Int16List] chunks that are ready for Codec2 encoding.
+  /// The returned stream emits [Int16List] chunks that are ready for voice encoding.
   Stream<Int16List> startCapture({
     Duration chunkDuration = const Duration(seconds: 1),
+    int sampleRateHz = 8000,
     bool enableBandPassFilter = true,
     bool enableCompressor = true,
     bool enableLimiter = true,
+    bool enableAutoGain = false,
+    bool enableEchoCancellation = false,
+    bool enableNoiseSuppression = false,
   }) {
     if (_isRecording) {
       throw StateError('VoiceRecorderService: already recording');
@@ -43,39 +47,59 @@ class VoiceRecorderService {
 
     _startRecording(
       chunkDuration,
+      sampleRateHz: sampleRateHz,
       enableBandPassFilter: enableBandPassFilter,
       enableCompressor: enableCompressor,
       enableLimiter: enableLimiter,
+      enableAutoGain: enableAutoGain,
+      enableEchoCancellation: enableEchoCancellation,
+      enableNoiseSuppression: enableNoiseSuppression,
     );
     return _controller!.stream;
   }
 
   Future<void> _startRecording(
     Duration chunkDuration, {
+    required int sampleRateHz,
     required bool enableBandPassFilter,
     required bool enableCompressor,
     required bool enableLimiter,
+    required bool enableAutoGain,
+    required bool enableEchoCancellation,
+    required bool enableNoiseSuppression,
   }) async {
-    final config = const RecordConfig(
+    final useBandPassFilter = enableBandPassFilter;
+    final useCompressor = enableCompressor;
+    final useLimiter = enableLimiter;
+    final config = RecordConfig(
       encoder: AudioEncoder.pcm16bits,
-      sampleRate: 8000,
+      sampleRate: sampleRateHz,
       numChannels: 1,
       bitRate: 128000, // ignored for PCM, but required by API
+      autoGain: enableAutoGain,
+      echoCancel: enableEchoCancellation,
+      noiseSuppress: enableNoiseSuppression,
     );
 
     try {
       final stream = await _recorder.startStream(config);
       final voiceFilter = _VoiceBandPassFilter(
-        sampleRate: 8000,
+        sampleRate: sampleRateHz,
         lowCutHz: 250.0,
         highCutHz: 3400.0,
       );
       final dynamics = _VoiceDynamicsProcessor(
-        sampleRate: 8000,
-        enableCompressor: enableCompressor,
-        enableLimiter: enableLimiter,
+        sampleRate: sampleRateHz,
+        thresholdDb: -18.0,
+        ratio: 2.5,
+        attackMs: 8.0,
+        releaseMs: 120.0,
+        makeupGainDb: 4.0,
+        enableCompressor: useCompressor,
+        enableLimiter: useLimiter,
       );
-      final chunkBytes = 8000 * 2 * chunkDuration.inMilliseconds ~/ 1000;
+      final chunkBytes =
+          sampleRateHz * 2 * chunkDuration.inMilliseconds ~/ 1000;
       final buffer = <int>[];
 
       _sub = stream.listen(
@@ -85,9 +109,7 @@ class VoiceRecorderService {
             final chunk = buffer.sublist(0, chunkBytes);
             buffer.removeRange(0, chunkBytes);
             final pcm = _bytesToInt16(Uint8List.fromList(chunk));
-            final filtered = enableBandPassFilter
-                ? voiceFilter.process(pcm)
-                : pcm;
+            final filtered = useBandPassFilter ? voiceFilter.process(pcm) : pcm;
             _controller?.add(dynamics.process(filtered));
           }
         },
@@ -95,9 +117,7 @@ class VoiceRecorderService {
           if (buffer.isNotEmpty) {
             final padded = _padToEven(buffer);
             final pcm = _bytesToInt16(Uint8List.fromList(padded));
-            final filtered = enableBandPassFilter
-                ? voiceFilter.process(pcm)
-                : pcm;
+            final filtered = useBandPassFilter ? voiceFilter.process(pcm) : pcm;
             _controller?.add(dynamics.process(filtered));
           }
           _controller?.close();
@@ -163,17 +183,22 @@ class _VoiceDynamicsProcessor {
 
   _VoiceDynamicsProcessor({
     required int sampleRate,
+    required double thresholdDb,
+    required double ratio,
+    required double attackMs,
+    required double releaseMs,
+    required double makeupGainDb,
     required bool enableCompressor,
     required bool enableLimiter,
   }) : _enableCompressor = enableCompressor,
        _enableLimiter = enableLimiter,
        _compressor = _SimpleCompressor(
          sampleRate: sampleRate.toDouble(),
-         thresholdDb: -18.0,
-         ratio: 2.5,
-         attackMs: 8.0,
-         releaseMs: 120.0,
-         makeupGainDb: 4.0,
+         thresholdDb: thresholdDb,
+         ratio: ratio,
+         attackMs: attackMs,
+         releaseMs: releaseMs,
+         makeupGainDb: makeupGainDb,
        ),
        _limiter = _PeakLimiter(ceilingDb: -1.0);
 

lib/utils/avatar_label_helper.dart

@@ -1,4 +1,6 @@
 class AvatarLabelHelper {
+  static final RegExp _alnumChunks = RegExp(r'[A-Za-z0-9]+');
+
   static String buildLabel(String name) {
     final trimmed = name.trim();
     if (trimmed.isEmpty) return '?';
@@ -11,18 +13,23 @@ class AvatarLabelHelper {
       return '#${_take(hashBody, 2)}'.toUpperCase();
     }
 
-    final parts = trimmed
-        .split(RegExp(r'[\s_-]+'))
+    final parts = _alnumChunks
+        .allMatches(trimmed)
+        .map((match) => match.group(0)!)
         .where((part) => part.isNotEmpty)
         .toList();
 
+    if (parts.isEmpty) {
+      return '?';
+    }
+
     if (parts.length >= 2) {
       final first = _take(parts[0], 1);
       final second = _take(parts[1], 1);
       return '$first$second'.toUpperCase();
     }
 
-    return _take(trimmed, 2).toUpperCase();
+    return _take(parts.first, 2).toUpperCase();
   }
 
   static String _take(String value, int count) {

lib/utils/contact_grouping.dart

@@ -0,0 +1,116 @@
+import '../models/contact.dart';
+
+class InferredContactGroup {
+  final String key;
+  final String label;
+  final List<Contact> contacts;
+
+  const InferredContactGroup({
+    required this.key,
+    required this.label,
+    required this.contacts,
+  });
+
+  DateTime get latestSeen => contacts.first.lastSeenTime;
+}
+
+class ContactListItem {
+  final Contact? contact;
+  final InferredContactGroup? group;
+
+  const ContactListItem._({this.contact, this.group});
+
+  const ContactListItem.contact(Contact contact) : this._(contact: contact);
+
+  const ContactListItem.group(InferredContactGroup group)
+    : this._(group: group);
+
+  bool get isGroup => group != null;
+
+  DateTime get latestSeen => group?.latestSeen ?? contact!.lastSeenTime;
+}
+
+class ContactGrouping {
+  static final RegExp _prefixedNamePattern = RegExp(
+    r'^([A-Za-z0-9]{2,})([-_/:])',
+  );
+
+  static List<Contact> sortByLastSeen(List<Contact> contacts) {
+    return List<Contact>.from(contacts)
+      ..sort((a, b) => b.lastSeenTime.compareTo(a.lastSeenTime));
+  }
+
+  static List<ContactListItem> buildItems(
+    List<Contact> contacts, {
+    int minGroupSize = 4,
+  }) {
+    final sortedContacts = sortByLastSeen(contacts);
+    return buildItemsFromSorted(sortedContacts, minGroupSize: minGroupSize);
+  }
+
+  static List<ContactListItem> buildItemsFromSorted(
+    List<Contact> sortedContacts, {
+    int minGroupSize = 4,
+  }) {
+    final groupedContacts = <String, List<Contact>>{};
+    final groupLabels = <String, String>{};
+
+    for (final contact in sortedContacts) {
+      final prefix = _extractPrefix(contact.displayName);
+      if (prefix == null) continue;
+      groupedContacts.putIfAbsent(prefix.key, () => <Contact>[]).add(contact);
+      groupLabels.putIfAbsent(prefix.key, () => prefix.label);
+    }
+
+    final eligibleGroups = <String, InferredContactGroup>{};
+    for (final entry in groupedContacts.entries) {
+      if (entry.value.length < minGroupSize) continue;
+      eligibleGroups[entry.key] = InferredContactGroup(
+        key: entry.key,
+        label: groupLabels[entry.key] ?? entry.key,
+        contacts: entry.value,
+      );
+    }
+
+    final emittedGroups = <String>{};
+    final items = <ContactListItem>[];
+
+    for (final contact in sortedContacts) {
+      final prefix = _extractPrefix(contact.displayName);
+      final group = prefix == null ? null : eligibleGroups[prefix.key];
+      if (group == null) {
+        items.add(ContactListItem.contact(contact));
+        continue;
+      }
+      if (emittedGroups.add(group.key)) {
+        items.add(ContactListItem.group(group));
+      }
+    }
+
+    return items;
+  }
+
+  static _GroupPrefix? _extractPrefix(String name) {
+    final trimmed = name.trim();
+    if (trimmed.isEmpty) return null;
+
+    final match = _prefixedNamePattern.firstMatch(trimmed);
+    if (match == null) return null;
+
+    final rawPrefix = match.group(1);
+    final separator = match.group(2);
+    if (rawPrefix == null || separator == null) return null;
+
+    return _GroupPrefix(
+      key: rawPrefix.toUpperCase(),
+      label: '$rawPrefix$separator',
+    );
+  }
+}
+
+class _GroupPrefix {
+  final String key;
+  final String label;
+
+  const _GroupPrefix({required this.key, required this.label});
+}

lib/utils/log_rx_route_decoder.dart

@@ -4,38 +4,55 @@ import '../models/contact.dart';
 
 class DecodedLogRxRoute {
   final int payloadType;
-  final List<int> pathHashes;
+  final int pathDescriptor;
+  final List<int> pathBytes;
+  final int hashSize;
 
   const DecodedLogRxRoute({
     required this.payloadType,
-    required this.pathHashes,
+    required this.pathDescriptor,
+    required this.pathBytes,
+    required this.hashSize,
   });
 
-  int? get originalSenderHash => pathHashes.isEmpty ? null : pathHashes.first;
+  List<String> get hopHashes =>
+      LogRxRouteDecoder.splitHopHashes(pathBytes, hashSize: hashSize);
+
+  int get hopCount => hopHashes.length;
+
+  String? get originalSenderHashHex =>
+      hopHashes.isEmpty ? null : hopHashes.first;
 }
 
 class ResolvedNodeHash {
-  final int hash;
+  final String hashHex;
   final String label;
   final bool isOwnNode;
   final bool isUniqueMatch;
   final int matchCount;
+  final double? latitude;
+  final double? longitude;
 
   const ResolvedNodeHash({
-    required this.hash,
+    required this.hashHex,
     required this.label,
     required this.isOwnNode,
     required this.isUniqueMatch,
     required this.matchCount,
+    this.latitude,
+    this.longitude,
   });
 
-  String get hexLabel => '0x${hash.toRadixString(16).padLeft(2, '0')}';
+  String get hexLabel => '0x${hashHex.toUpperCase()}';
 }
 
 class LogRxRouteDecoder {
   const LogRxRouteDecoder._();
 
-  static DecodedLogRxRoute? decode(Uint8List rawData) {
+  static DecodedLogRxRoute? decode(
+    Uint8List rawData, {
+    int? preferredHashSize,
+  }) {
     if (rawData.length < 5 || rawData[0] != 0x88) return null;
 
     final rawPacketData = rawData.sublist(3);
@@ -52,44 +69,147 @@ class LogRxRouteDecoder {
     }
 
     if (rawPacketData.length <= index) return null;
-    final pathLen = rawPacketData[index++];
-    if (rawPacketData.length < index + pathLen) return null;
+    final pathDescriptor = rawPacketData[index++];
+    final pathMode = (pathDescriptor & 0xFF) >> 6;
+    final pathByteLen = pathMode == 0
+        ? pathDescriptor
+        : descriptorByteLength(pathDescriptor);
+    if (pathByteLen == null || rawPacketData.length < index + pathByteLen) {
+      return null;
+    }
+    final pathBytes = rawPacketData.sublist(index, index + pathByteLen);
+    final hashSize = pathMode == 0
+        ? inferHashSize(pathBytes, preferredHashSize: preferredHashSize)
+        : (descriptorHashSize(pathDescriptor) ??
+              inferHashSize(pathBytes, preferredHashSize: preferredHashSize));
 
     return DecodedLogRxRoute(
       payloadType: payloadType,
-      pathHashes: rawPacketData.sublist(index, index + pathLen),
+      pathDescriptor: pathDescriptor,
+      pathBytes: pathBytes,
+      hashSize: hashSize,
     );
   }
 
+  static int? descriptorHashSize(int pathDescriptor) {
+    final normalized = pathDescriptor & 0xFF;
+    final mode = normalized >> 6;
+    if (mode == 3) return null;
+    return mode + 1;
+  }
+
+  static int? descriptorHopCount(int pathDescriptor) {
+    final hashSize = descriptorHashSize(pathDescriptor);
+    if (hashSize == null) return null;
+    return (pathDescriptor & 0xFF) & 0x3F;
+  }
+
+  static int? descriptorByteLength(int pathDescriptor) {
+    final hashSize = descriptorHashSize(pathDescriptor);
+    final hopCount = descriptorHopCount(pathDescriptor);
+    if (hashSize == null || hopCount == null) return null;
+    final byteLen = hopCount * hashSize;
+    return byteLen <= 64 ? byteLen : null;
+  }
+
+  static int inferHashSize(List<int> pathBytes, {int? preferredHashSize}) {
+    if (pathBytes.isEmpty) return 1;
+
+    final normalizedPreferred =
+        preferredHashSize != null &&
+            preferredHashSize >= 1 &&
+            preferredHashSize <= 3
+        ? preferredHashSize
+        : null;
+    if (normalizedPreferred != null &&
+        pathBytes.length % normalizedPreferred == 0) {
+      return normalizedPreferred;
+    }
+
+    for (final candidate in const [3, 2, 1]) {
+      if (pathBytes.length % candidate == 0) {
+        return candidate;
+      }
+    }
+
+    return 1;
+  }
+
+  static List<String> splitHopHashes(
+    List<int> pathBytes, {
+    required int hashSize,
+  }) {
+    if (pathBytes.isEmpty) return const [];
+    if (hashSize < 1 || hashSize > 3 || pathBytes.length % hashSize != 0) {
+      return pathBytes
+          .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
+          .toList();
+    }
+
+    final hops = <String>[];
+    for (var index = 0; index < pathBytes.length; index += hashSize) {
+      hops.add(
+        pathBytes
+            .sublist(index, index + hashSize)
+            .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
+            .join(),
+      );
+    }
+    return hops;
+  }
+
+  static List<int> reverseHopBytes(
+    List<int> pathBytes, {
+    required int hashSize,
+  }) {
+    if (pathBytes.isEmpty) return const [];
+    if (hashSize < 1 || hashSize > 3 || pathBytes.length % hashSize != 0) {
+      return List<int>.from(pathBytes.reversed);
+    }
+
+    final reversed = <int>[];
+    for (
+      var index = pathBytes.length - hashSize;
+      index >= 0;
+      index -= hashSize
+    ) {
+      reversed.addAll(pathBytes.sublist(index, index + hashSize));
+    }
+    return reversed;
+  }
+
   static ResolvedNodeHash resolveHash(
-    int hash, {
+    String hashHex, {
     required Iterable<Contact> contacts,
     Uint8List? ownPublicKey,
     String? ownName,
+    double? ownLatitude,
+    double? ownLongitude,
   }) {
-    final ownHash = ownPublicKey != null && ownPublicKey.isNotEmpty
-        ? ownPublicKey.first
-        : null;
-    if (ownHash == hash) {
+    final normalizedHashHex = hashHex.toLowerCase();
+    final ownKeyHex = _bytesToHex(ownPublicKey);
+    if (ownKeyHex != null && ownKeyHex.startsWith(normalizedHashHex)) {
       final ownLabel = (ownName != null && ownName.trim().isNotEmpty)
           ? '$ownName (you)'
           : 'You';
       return ResolvedNodeHash(
-        hash: hash,
+        hashHex: normalizedHashHex,
         label: ownLabel,
         isOwnNode: true,
         isUniqueMatch: true,
         matchCount: 1,
+        latitude: ownLatitude,
+        longitude: ownLongitude,
       );
     }
 
     final matches = contacts.where((contact) {
-      return contact.publicKey.isNotEmpty && contact.publicKey.first == hash;
+      return contact.publicKeyHex.toLowerCase().startsWith(normalizedHashHex);
     }).toList();
 
     if (matches.isEmpty) {
       return ResolvedNodeHash(
-        hash: hash,
+        hashHex: normalizedHashHex,
         label: 'Unknown',
         isOwnNode: false,
         isUniqueMatch: false,
@@ -98,12 +218,15 @@ class LogRxRouteDecoder {
     }
 
     if (matches.length == 1) {
+      final location = matches.first.displayLocation;
       return ResolvedNodeHash(
-        hash: hash,
+        hashHex: normalizedHashHex,
         label: matches.first.displayName,
         isOwnNode: false,
         isUniqueMatch: true,
         matchCount: 1,
+        latitude: location?.latitude,
+        longitude: location?.longitude,
       );
     }
 
@@ -119,11 +242,19 @@ class LogRxRouteDecoder {
         ? '$candidateNames +$extraCount'
         : candidateNames;
     return ResolvedNodeHash(
-      hash: hash,
+      hashHex: normalizedHashHex,
       label: label,
       isOwnNode: false,
       isUniqueMatch: false,
       matchCount: matches.length,
     );
   }
+
+  static String? _bytesToHex(Uint8List? bytes) {
+    if (bytes == null || bytes.isEmpty) return null;
+    return bytes
+        .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
+        .join()
+        .toLowerCase();
+  }
 }

lib/utils/message_extensions.dart

@@ -1,12 +1,17 @@
 import 'package:flutter/widgets.dart';
+import 'package:provider/provider.dart';
 import '../models/message.dart';
 import '../l10n/app_localizations.dart';
+import '../providers/messages_provider.dart';
 
 /// Extension for Message to provide localized delivery status
 extension MessageLocalization on Message {
   /// Get localized delivery status text
   String getLocalizedDeliveryStatus(BuildContext context) {
     final l10n = AppLocalizations.of(context)!;
+    final routeMetadata = context
+        .read<MessagesProvider>()
+        .getMessageRouteMetadata(id);
 
     // For channel messages, show echo count instead of delivery status
     if (isChannelMessage && deliveryStatus == MessageDeliveryStatus.sent) {
@@ -26,29 +31,51 @@ extension MessageLocalization on Message {
       case MessageDeliveryStatus.sending:
         if (isContactMessage) {
           if (retryAttempt > 0) {
-            return '${l10n.pending} • ${l10n.retryAttempt} $retryAttempt/3';
+            final routeSuffix = routeMetadata != null
+                ? ' • ${routeMetadata.modeLabel}'
+                : '';
+            return '${l10n.pending} • ${l10n.retryAttempt} $retryAttempt/4$routeSuffix';
           }
-          return l10n.pending;
+          return routeMetadata == null
+              ? l10n.pending
+              : '${l10n.pending} • ${routeMetadata.modeLabel}';
         }
         return l10n.sending;
       case MessageDeliveryStatus.sent:
-        return l10n.sent;
+        return routeMetadata == null
+            ? l10n.sent
+            : '${l10n.sent} • ${routeMetadata.modeLabel}';
       case MessageDeliveryStatus.delivered:
         if (retryAttempt > 0 && roundTripTimeMs != null) {
-          return '${l10n.deliveredWithTime(roundTripTimeMs!)} • ${l10n.retryAttempt} $retryAttempt/3';
+          final routeSuffix = routeMetadata != null
+              ? ' • ${routeMetadata.modeLabel}'
+              : '';
+          return '${l10n.deliveredWithTime(roundTripTimeMs!)} • ${l10n.retryAttempt} $retryAttempt/4$routeSuffix';
         }
         if (retryAttempt > 0) {
-          return '${l10n.delivered} • ${l10n.retryAttempt} $retryAttempt/3';
+          final routeSuffix = routeMetadata != null
+              ? ' • ${routeMetadata.modeLabel}'
+              : '';
+          return '${l10n.delivered} • ${l10n.retryAttempt} $retryAttempt/4$routeSuffix';
         }
         if (roundTripTimeMs != null) {
-          return l10n.deliveredWithTime(roundTripTimeMs!);
+          return routeMetadata == null
+              ? l10n.deliveredWithTime(roundTripTimeMs!)
+              : '${l10n.deliveredWithTime(roundTripTimeMs!)} • ${routeMetadata.modeLabel}';
         }
-        return l10n.delivered;
+        return routeMetadata == null
+            ? l10n.delivered
+            : '${l10n.delivered} • ${routeMetadata.modeLabel}';
       case MessageDeliveryStatus.failed:
         if (retryAttempt > 0) {
-          return '${l10n.failed} • ${l10n.retryAttempt} $retryAttempt/3';
+          final routeSuffix = routeMetadata != null
+              ? ' • ${routeMetadata.modeLabel}'
+              : '';
+          return '${l10n.failed} • ${l10n.retryAttempt} $retryAttempt/4$routeSuffix';
         }
-        return l10n.failed;
+        return routeMetadata == null
+            ? l10n.failed
+            : '${l10n.failed} • ${routeMetadata.modeLabel}';
       case MessageDeliveryStatus.received:
         return '';
     }

lib/utils/trace_node_resolver.dart

@@ -0,0 +1,132 @@
+import 'package:latlong2/latlong.dart';
+
+import '../services/mesh_map_nodes_service.dart';
+
+class ResolvedTraceNode {
+  final MeshMapNode? node;
+  final int matchCount;
+  final bool usedOnlineFallback;
+
+  const ResolvedTraceNode({
+    required this.node,
+    required this.matchCount,
+    required this.usedOnlineFallback,
+  });
+
+  bool get hasMatch => node != null;
+  bool get isAmbiguous => matchCount > 1;
+
+  String? get matchSummary {
+    if (matchCount <= 1) return null;
+    final source = usedOnlineFallback ? 'online' : 'local';
+    return '$matchCount $source matches';
+  }
+}
+
+class TraceNodeResolver {
+  static const Distance _distance = Distance();
+
+  const TraceNodeResolver._();
+
+  static ResolvedTraceNode resolveBest({
+    required List<MeshMapNode> nodes,
+    required Set<String> localPublicKeys,
+    required String? prefixHex,
+    LatLng? referenceA,
+    LatLng? referenceB,
+    String? preferredPrefix,
+  }) {
+    if (prefixHex == null || prefixHex.isEmpty) {
+      return const ResolvedTraceNode(
+        node: null,
+        matchCount: 0,
+        usedOnlineFallback: false,
+      );
+    }
+
+    final allMatches = nodes
+        .where((n) => n.publicKey.startsWith(prefixHex))
+        .toList();
+    if (allMatches.isEmpty) {
+      return const ResolvedTraceNode(
+        node: null,
+        matchCount: 0,
+        usedOnlineFallback: false,
+      );
+    }
+
+    final localMatches = allMatches
+        .where((node) => localPublicKeys.contains(node.publicKey))
+        .toList();
+    var pool = localMatches.isNotEmpty ? localMatches : allMatches;
+    final usedOnlineFallback = localMatches.isEmpty;
+
+    if (preferredPrefix != null && preferredPrefix.isNotEmpty) {
+      final preferredMatches = pool
+          .where((node) => node.publicKey.startsWith(preferredPrefix))
+          .toList();
+      if (preferredMatches.isNotEmpty) {
+        pool = preferredMatches;
+      }
+    }
+
+    pool.sort((a, b) {
+      final distanceCompare =
+          _scoreNode(
+            a,
+            referenceA: referenceA,
+            referenceB: referenceB,
+          ).compareTo(
+            _scoreNode(b, referenceA: referenceA, referenceB: referenceB),
+          );
+      if (distanceCompare != 0) return distanceCompare;
+      return b.updatedAtMs.compareTo(a.updatedAtMs);
+    });
+
+    return ResolvedTraceNode(
+      node: pool.first,
+      matchCount: pool.length,
+      usedOnlineFallback: usedOnlineFallback,
+    );
+  }
+
+  static double _scoreNode(
+    MeshMapNode node, {
+    LatLng? referenceA,
+    LatLng? referenceB,
+  }) {
+    final point = LatLng(node.latitude, node.longitude);
+    if (referenceA != null && referenceB != null) {
+      return _distanceToSegmentMeters(point, referenceA, referenceB);
+    }
+    if (referenceA != null) {
+      return _distance.as(LengthUnit.Meter, point, referenceA);
+    }
+    if (referenceB != null) {
+      return _distance.as(LengthUnit.Meter, point, referenceB);
+    }
+    return double.maxFinite;
+  }
+
+  static double _distanceToSegmentMeters(LatLng p, LatLng a, LatLng b) {
+    final ax = a.longitude;
+    final ay = a.latitude;
+    final bx = b.longitude;
+    final by = b.latitude;
+    final px = p.longitude;
+    final py = p.latitude;
+
+    final abx = bx - ax;
+    final aby = by - ay;
+    final apx = px - ax;
+    final apy = py - ay;
+    final ab2 = abx * abx + aby * aby;
+    if (ab2 == 0) {
+      return _distance.as(LengthUnit.Meter, a, p);
+    }
+    var t = (apx * abx + apy * aby) / ab2;
+    t = t.clamp(0.0, 1.0);
+    final closest = LatLng(ay + aby * t, ax + abx * t);
+    return _distance.as(LengthUnit.Meter, closest, p);
+  }
+}

lib/utils/voice_message_parser.dart

@@ -11,20 +11,41 @@ const int _defaultLoRaCrcEnabled = 1;
 const int _defaultLoRaExplicitHeader = 1;
 const double _defaultAirtimeBudgetFactor = 1.0; // one half duty-cycle
 
-/// Identifies which Codec2 mode was used for a voice packet.
-/// Matches the modeId byte in the text/binary packet header.
-enum VoicePacketMode {
-  mode700c(0, '700C'),
-  mode1200(1, '1200'),
-  mode2400(2, '2400'),
-  mode1300(3, '1300'),
-  mode1400(4, '1400'),
-  mode1600(5, '1600'),
-  mode3200(6, '3200');
+enum VoiceCodecKind {
+  codec2(0, 'Codec2');
 
-  const VoicePacketMode(this.id, this.label);
+  const VoiceCodecKind(this.id, this.label);
   final int id;
   final String label;
+}
+
+/// Identifies which voice codec/mode was used for a packet.
+/// Matches the modeId byte in the text/binary packet header.
+enum VoicePacketMode {
+  mode700c(0, '700C', VoiceCodecKind.codec2, 8000, 100, 1600),
+  mode1200(1, '1200', VoiceCodecKind.codec2, 8000, 150, 1040),
+  mode2400(2, '2400', VoiceCodecKind.codec2, 8000, 300, 520),
+  mode1300(3, '1300', VoiceCodecKind.codec2, 8000, 175, 880),
+  mode1400(4, '1400', VoiceCodecKind.codec2, 8000, 175, 880),
+  mode1600(5, '1600', VoiceCodecKind.codec2, 8000, 200, 800),
+  mode3200(6, '3200', VoiceCodecKind.codec2, 8000, 400, 400);
+
+  const VoicePacketMode(
+    this.id,
+    this.label,
+    this.codec,
+    this.sampleRateHz,
+    this.bytesPerSecond,
+    this.packetDurationMs,
+  );
+  final int id;
+  final String label;
+  final VoiceCodecKind codec;
+  final int sampleRateHz;
+  final int bytesPerSecond;
+  final int packetDurationMs;
+
+  int get samplesPerPacket => sampleRateHz * packetDurationMs ~/ 1000;
 
   static VoicePacketMode fromId(int id) => VoicePacketMode.values.firstWhere(
     (m) => m.id == id,
@@ -153,23 +174,21 @@ class VoicePacket {
 
   /// Estimated audio duration of this packet in milliseconds.
   int get durationMs {
-    // bytesPerSecond for each mode
-    final bps = switch (mode) {
-      VoicePacketMode.mode700c => 100,
-      VoicePacketMode.mode1200 => 150,
-      VoicePacketMode.mode1300 => 175,
-      VoicePacketMode.mode1400 => 175,
-      VoicePacketMode.mode1600 => 200,
-      VoicePacketMode.mode2400 => 300,
-      VoicePacketMode.mode3200 => 400,
-    };
-    if (bps == 0) return 0;
-    return (codec2Data.length * 1000 ~/ bps).clamp(0, 1500);
+    try {
+      final bytesPerSecond = voiceModeBytesPerSecond(mode);
+      if (bytesPerSecond <= 0) return 0;
+      return (codec2Data.length * 1000 ~/ bytesPerSecond).clamp(0, 1500);
+    } catch (_) {
+      // Be permissive with stale or malformed persisted voice metadata.
+      return 0;
+    }
   }
 
   @override
   String toString() {
-    final suffix = total > 0 ? ' ${mode.label} [$index/${total - 1}]' : ' [$index]';
+    final suffix = total > 0
+        ? ' ${mode.label} [$index/${total - 1}]'
+        : ' [$index]';
     return 'VoicePacket($sessionId$suffix ${codec2Data.length}B)';
   }
 }
@@ -244,10 +263,10 @@ class VoiceEnvelope {
 int voiceModeBytesPerSecond(VoicePacketMode mode) => switch (mode) {
   VoicePacketMode.mode700c => 100,
   VoicePacketMode.mode1200 => 150,
+  VoicePacketMode.mode2400 => 300,
   VoicePacketMode.mode1300 => 175,
   VoicePacketMode.mode1400 => 175,
   VoicePacketMode.mode1600 => 200,
-  VoicePacketMode.mode2400 => 300,
   VoicePacketMode.mode3200 => 400,
 };
 
@@ -419,8 +438,7 @@ class VoiceFetchRequest {
     this.version = 3,
   });
 
-  static bool isVoiceFetchRequestText(String text) =>
-      text.startsWith(_prefix);
+  static bool isVoiceFetchRequestText(String text) => text.startsWith(_prefix);
   static bool isVoiceFetchRequestBinary(Uint8List payload) =>
       payload.isNotEmpty && payload[0] == _binaryMagic;
 
@@ -473,9 +491,7 @@ class VoiceFetchRequest {
       final requesterKey6 = parts[2];
       final normalizedWant = wantToken == 'a'
           ? 'all'
-          : ((wantToken.startsWith('m'))
-                ? 'missing'
-                : wantToken);
+          : ((wantToken.startsWith('m')) ? 'missing' : wantToken);
 
       if (sid == null) {
         return null;
@@ -602,7 +618,11 @@ String _toBase36(int value) => value.toRadixString(36);
 
 String _encodeSessionId(String sessionIdHex) {
   if (!RegExp(r'^[0-9a-fA-F]{8}$').hasMatch(sessionIdHex)) {
-    throw ArgumentError.value(sessionIdHex, 'sessionIdHex', 'Expected 8 hex chars');
+    throw ArgumentError.value(
+      sessionIdHex,
+      'sessionIdHex',
+      'Expected 8 hex chars',
+    );
   }
   final value = int.parse(sessionIdHex, radix: 16);
   return value.toRadixString(36);
@@ -616,10 +636,7 @@ String? _decodeSessionId(String token) {
 }
 
 String _encodeMissingIndicesCompact(List<int> indices) {
-  final sorted = indices
-      .where((v) => v >= 0 && v <= 254)
-      .toSet()
-      .toList()
+  final sorted = indices.where((v) => v >= 0 && v <= 254).toSet().toList()
     ..sort();
   if (sorted.isEmpty) return '';
   final chunks = <String>[];
@@ -632,7 +649,9 @@ String _encodeMissingIndicesCompact(List<int> indices) {
       continue;
     }
     chunks.add(
-      start == prev ? _toBase36(start) : '${_toBase36(start)}-${_toBase36(prev)}',
+      start == prev
+          ? _toBase36(start)
+          : '${_toBase36(start)}-${_toBase36(prev)}',
     );
     start = curr;
     prev = curr;

lib/widgets/common/contact_avatar.dart

@@ -22,7 +22,7 @@ class ContactAvatar extends StatelessWidget {
     final foregroundColor = _getForegroundColor(backgroundColor);
     final emoji = contact.roleEmoji;
 
-    if (emoji != null && emoji.isNotEmpty) {
+    if (_showsLeadingEmoji && emoji != null && emoji.isNotEmpty) {
       return _buildAvatarFrame(
         backgroundColor: backgroundColor,
         child: Text(emoji, style: TextStyle(fontSize: radius * 1.05)),
@@ -86,8 +86,16 @@ class ContactAvatar extends StatelessWidget {
   bool get _usesSquareShape =>
       contact.type == ContactType.channel || contact.type == ContactType.room;
 
+  bool get _showsLeadingEmoji {
+    final emoji = contact.roleEmoji;
+    if (emoji == null || emoji.isEmpty) return false;
+
+    final effectiveName = (displayName ?? contact.displayName).trimLeft();
+    return effectiveName.startsWith(emoji);
+  }
+
   Color _getBackgroundColor(BuildContext context) {
-    if (_shouldUseLabelFallback || (contact.roleEmoji?.isNotEmpty ?? false)) {
+    if (_shouldUseLabelFallback || _showsLeadingEmoji) {
       return TrailColorService.getTrailColor(contact);
     }
 

lib/widgets/connection_mode_selector.dart

@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:provider/provider.dart';
@@ -25,6 +26,10 @@ class _ConnectionModeSelectorState extends State<ConnectionModeSelector> {
   }
 
   Future<void> _loadLocalIPs() async {
+    if (kIsWeb) {
+      return;
+    }
+
     final Set<String> ipsSet = {};
 
     try {

lib/widgets/contacts/add_channel_dialog.dart

@@ -35,16 +35,17 @@ class _AddChannelDialogState extends State<AddChannelDialog> {
   /// Validate channel name
   String? _validateName(String? value) {
     final l10n = AppLocalizations.of(context)!;
+    final trimmedValue = value?.trim() ?? '';
 
-    if (value == null || value.trim().isEmpty) {
+    if (trimmedValue.isEmpty) {
       return l10n.channelNameRequired;
     }
 
-    if (value.length > 31) {
+    if (trimmedValue.length > 31) {
       return l10n.channelNameTooLong;
     }
 
-    if (!_isAscii(value)) {
+    if (!_isAscii(trimmedValue)) {
       return l10n.invalidAsciiCharacters;
     }
 
@@ -105,7 +106,8 @@ class _AddChannelDialogState extends State<AddChannelDialog> {
   Widget build(BuildContext context) {
     final l10n = AppLocalizations.of(context)!;
     final theme = Theme.of(context);
-    final isHashChannel = _nameController.text.startsWith('#');
+    final normalizedName = _nameController.text.trimLeft();
+    final isHashChannel = normalizedName.startsWith('#');
 
     return AlertDialog(
       title: Text(l10n.addChannel),
@@ -163,8 +165,15 @@ class _AddChannelDialogState extends State<AddChannelDialog> {
                 enabled: !_isCreating,
                 maxLength: 31,
                 validator: _validateName,
-                textInputAction: TextInputAction.next,
+                textInputAction: isHashChannel
+                    ? TextInputAction.done
+                    : TextInputAction.next,
                 onChanged: (_) => setState(() {}), // Rebuild to update icon
+                onFieldSubmitted: (_) {
+                  if (isHashChannel) {
+                    _handleCreate();
+                  }
+                },
               ),
               // Channel Secret Field (only show for private channels)
               if (!isHashChannel) ...[

lib/widgets/contacts/contact_trace_sheet.dart

@@ -0,0 +1,525 @@
+import 'dart:async';
+import 'dart:math' as math;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_map/flutter_map.dart' as flutter_map;
+import 'package:latlong2/latlong.dart';
+import 'package:provider/provider.dart';
+
+import '../../models/contact.dart';
+import '../../providers/connection_provider.dart';
+import '../../providers/contacts_provider.dart';
+import '../../services/mesh_map_nodes_service.dart';
+import '../../utils/trace_node_resolver.dart';
+
+class ContactTraceSheet extends StatefulWidget {
+  final Contact contact;
+
+  const ContactTraceSheet({super.key, required this.contact});
+
+  @override
+  State<ContactTraceSheet> createState() => _ContactTraceSheetState();
+}
+
+class _ContactTraceSheetState extends State<ContactTraceSheet> {
+  late final Future<_ContactTraceResult> _future;
+
+  @override
+  void initState() {
+    super.initState();
+    _future = _loadTrace();
+  }
+
+  Future<_ContactTraceResult> _loadTrace() async {
+    final connectionProvider = context.read<ConnectionProvider>();
+    final contactsProvider = context.read<ContactsProvider>();
+    final localNodes = _localNodesFromContacts(
+      contactsProvider,
+      connectionProvider: connectionProvider,
+    );
+    final localPublicKeys = localNodes.map((node) => node.publicKey).toSet();
+
+    var trace = _buildTraceResult(
+      nodes: localNodes,
+      localPublicKeys: localPublicKeys,
+      selfPublicKey: connectionProvider.deviceInfo.publicKey,
+    );
+    if (_isCompleteTrace(trace)) {
+      return trace;
+    }
+
+    unawaited(
+      MeshMapNodesService.syncInBackgroundIfStale(
+        cacheTtl: MeshMapNodesService.traceCacheTtl,
+      ),
+    );
+
+    final remoteNodes = await MeshMapNodesService.loadCachedNodes(
+      cacheTtl: MeshMapNodesService.traceCacheTtl,
+    );
+    trace = _buildTraceResult(
+      nodes: _mergeNodes(localNodes, remoteNodes),
+      localPublicKeys: localPublicKeys,
+      selfPublicKey: connectionProvider.deviceInfo.publicKey,
+    );
+    return trace;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SafeArea(
+      child: FutureBuilder<_ContactTraceResult>(
+        future: _future,
+        builder: (context, snapshot) {
+          if (snapshot.connectionState != ConnectionState.done) {
+            return const SizedBox(
+              height: 360,
+              child: Center(child: CircularProgressIndicator()),
+            );
+          }
+          if (snapshot.hasError) {
+            return SizedBox(
+              height: 360,
+              child: Center(
+                child: Padding(
+                  padding: const EdgeInsets.all(16),
+                  child: Text('Failed to load trace: ${snapshot.error}'),
+                ),
+              ),
+            );
+          }
+
+          final trace = snapshot.data!;
+          final routeEntries = _displayRouteEntries(trace);
+          final concreteNodes = routeEntries
+              .where((entry) => entry.resolved.node != null)
+              .map((entry) => entry.resolved.node!)
+              .toList();
+          final mapPoints = concreteNodes
+              .map((node) => LatLng(node.latitude, node.longitude))
+              .toList();
+          final hasMapPath = mapPoints.length >= 2;
+          final relayNodes = trace.matchedRelayNodes.whereType<MeshMapNode>();
+
+          return SizedBox(
+            height: MediaQuery.of(context).size.height * 0.75,
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const SizedBox(height: 12),
+                Center(
+                  child: Container(
+                    width: 40,
+                    height: 4,
+                    decoration: BoxDecoration(
+                      color: Theme.of(context).dividerColor,
+                      borderRadius: BorderRadius.circular(2),
+                    ),
+                  ),
+                ),
+                Padding(
+                  padding: const EdgeInsets.fromLTRB(16, 14, 16, 8),
+                  child: Text(
+                    'Trace',
+                    style: Theme.of(context).textTheme.titleLarge,
+                  ),
+                ),
+                Padding(
+                  padding: const EdgeInsets.symmetric(horizontal: 16),
+                  child: Text(
+                    trace.routeHashes.isEmpty
+                        ? 'Direct route to ${widget.contact.displayName}'
+                        : 'Route from saved contact path (${trace.routeHashes.length} hop${trace.routeHashes.length == 1 ? '' : 's'})',
+                    style: Theme.of(context).textTheme.bodySmall,
+                  ),
+                ),
+                const SizedBox(height: 10),
+                Expanded(
+                  child: ListView(
+                    padding: const EdgeInsets.only(bottom: 16),
+                    children: [
+                      Padding(
+                        padding: const EdgeInsets.symmetric(horizontal: 16),
+                        child: SizedBox(
+                          height: 240,
+                          child: ClipRRect(
+                            borderRadius: BorderRadius.circular(12),
+                            child: DecoratedBox(
+                              decoration: BoxDecoration(
+                                border: Border.all(
+                                  color: Theme.of(context).dividerColor,
+                                ),
+                              ),
+                              child: hasMapPath
+                                  ? flutter_map.FlutterMap(
+                                      options: flutter_map.MapOptions(
+                                        initialCameraFit:
+                                            flutter_map.CameraFit.bounds(
+                                              bounds:
+                                                  flutter_map
+                                                      .LatLngBounds.fromPoints(
+                                                    mapPoints,
+                                                  ),
+                                              padding: const EdgeInsets.all(28),
+                                            ),
+                                      ),
+                                      children: [
+                                        flutter_map.TileLayer(
+                                          urlTemplate:
+                                              'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
+                                          userAgentPackageName:
+                                              'com.meshcore.sar',
+                                        ),
+                                        flutter_map.PolylineLayer(
+                                          polylines: [
+                                            flutter_map.Polyline(
+                                              points: mapPoints,
+                                              strokeWidth: 4,
+                                              color: Theme.of(
+                                                context,
+                                              ).colorScheme.primary,
+                                            ),
+                                          ],
+                                        ),
+                                        flutter_map.MarkerLayer(
+                                          markers: concreteNodes
+                                              .asMap()
+                                              .entries
+                                              .map(
+                                                (entry) => flutter_map.Marker(
+                                                  point: LatLng(
+                                                    entry.value.latitude,
+                                                    entry.value.longitude,
+                                                  ),
+                                                  width: 34,
+                                                  height: 34,
+                                                  child: CircleAvatar(
+                                                    radius: 16,
+                                                    backgroundColor:
+                                                        entry.key == 0
+                                                        ? Colors.green
+                                                        : (entry.key ==
+                                                                  concreteNodes
+                                                                          .length -
+                                                                      1
+                                                              ? Colors.red
+                                                              : Colors.blue),
+                                                    child: Text(
+                                                      '${entry.key + 1}',
+                                                      style: const TextStyle(
+                                                        color: Colors.white,
+                                                        fontWeight:
+                                                            FontWeight.bold,
+                                                        fontSize: 11,
+                                                      ),
+                                                    ),
+                                                  ),
+                                                ),
+                                              )
+                                              .toList(),
+                                        ),
+                                      ],
+                                    )
+                                  : const Center(
+                                      child: Text(
+                                        'Not enough geolocated nodes to draw path',
+                                      ),
+                                    ),
+                            ),
+                          ),
+                        ),
+                      ),
+                      const SizedBox(height: 12),
+                      Padding(
+                        padding: const EdgeInsets.symmetric(horizontal: 16),
+                        child: Text(
+                          'Route',
+                          style: Theme.of(context).textTheme.titleMedium,
+                        ),
+                      ),
+                      if (routeEntries.isEmpty)
+                        const Padding(
+                          padding: EdgeInsets.symmetric(
+                            horizontal: 16,
+                            vertical: 8,
+                          ),
+                          child: Text(
+                            'No named nodes could be matched for this trace.',
+                          ),
+                        ),
+                      ...routeEntries.asMap().entries.map(
+                        (entry) => ListTile(
+                          leading: CircleAvatar(
+                            radius: 14,
+                            backgroundColor: entry.key == 0
+                                ? Colors.green
+                                : (entry.key == routeEntries.length - 1
+                                      ? Colors.red
+                                      : Colors.blue),
+                            child: Text(
+                              '${entry.key + 1}',
+                              style: const TextStyle(
+                                color: Colors.white,
+                                fontWeight: FontWeight.bold,
+                                fontSize: 11,
+                              ),
+                            ),
+                          ),
+                          title: Text(entry.value.label),
+                          subtitle: Text(
+                            '${_routeRoleLabel(entry.key, routeEntries.length)}${entry.value.keyLabel == null ? '' : ' • ${entry.value.keyLabel}'}${entry.value.matchSummary == null ? '' : ' • ${entry.value.matchSummary}'}',
+                          ),
+                        ),
+                      ),
+                      const SizedBox(height: 12),
+                      Padding(
+                        padding: const EdgeInsets.symmetric(horizontal: 16),
+                        child: Text(
+                          'Relays (${relayNodes.length})',
+                          style: Theme.of(context).textTheme.titleMedium,
+                        ),
+                      ),
+                      if (relayNodes.isEmpty)
+                        const Padding(
+                          padding: EdgeInsets.symmetric(
+                            horizontal: 16,
+                            vertical: 8,
+                          ),
+                          child: Text(
+                            'No relay nodes could be matched for this contact.',
+                          ),
+                        ),
+                      ...relayNodes.map(
+                        (node) => ListTile(
+                          leading: const Icon(Icons.router),
+                          title: Text(node.name),
+                          subtitle: Text(
+                            '${node.publicKey.substring(0, math.min(12, node.publicKey.length))} • '
+                            '${node.latitude.toStringAsFixed(5)}, ${node.longitude.toStringAsFixed(5)}',
+                          ),
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          );
+        },
+      ),
+    );
+  }
+
+  List<_RouteDisplayEntry> _displayRouteEntries(_ContactTraceResult trace) {
+    final entries = <_RouteDisplayEntry>[];
+    if (trace.sender.node != null) {
+      entries.add(_RouteDisplayEntry.fromResolved(trace.sender));
+    }
+    entries.addAll(
+      trace.matchedRelayNodes.asMap().entries.map((entry) {
+        final resolved = entry.value;
+        final node = resolved.node;
+        final hashHex = trace.routeHashes[entry.key].toUpperCase();
+        return _RouteDisplayEntry(
+          resolved: resolved,
+          label: node?.name ?? 'Unknown',
+          keyLabel: node != null ? _prefixKeyLabel(node.publicKey) : hashHex,
+          matchSummary: resolved.matchSummary,
+        );
+      }),
+    );
+    if (trace.recipient.node != null) {
+      entries.add(_RouteDisplayEntry.fromResolved(trace.recipient));
+    }
+    return entries;
+  }
+
+  String _routeRoleLabel(int index, int total) {
+    if (index == 0) return 'Sender';
+    if (index == total - 1) return 'Recipient';
+    return 'Relay';
+  }
+
+  String _prefixKeyLabel(String publicKey) =>
+      publicKey.substring(0, math.min(12, publicKey.length));
+
+  bool _isCompleteTrace(_ContactTraceResult trace) {
+    if (trace.sender.node == null || trace.recipient.node == null) {
+      return false;
+    }
+    if (trace.routeHashes.isEmpty) {
+      return true;
+    }
+    return trace.matchedRelayNodes.every((node) => node.node != null);
+  }
+
+  _ContactTraceResult _buildTraceResult({
+    required List<MeshMapNode> nodes,
+    required Set<String> localPublicKeys,
+    required List<int>? selfPublicKey,
+  }) {
+    final senderNode = TraceNodeResolver.resolveBest(
+      nodes: nodes,
+      localPublicKeys: localPublicKeys,
+      prefixHex: _toPrefixHex(selfPublicKey),
+    );
+    final recipientNode = TraceNodeResolver.resolveBest(
+      nodes: nodes,
+      localPublicKeys: localPublicKeys,
+      prefixHex: _toPrefixHex(widget.contact.publicKey),
+    );
+    final senderLatLng = senderNode.node == null
+        ? null
+        : LatLng(senderNode.node!.latitude, senderNode.node!.longitude);
+    final recipientLatLng = recipientNode.node == null
+        ? null
+        : LatLng(recipientNode.node!.latitude, recipientNode.node!.longitude);
+    final routeHashes =
+        widget.contact.routeHasPath && widget.contact.routeHopCount > 0
+        ? widget.contact.routeCanonicalText
+              .split(',')
+              .where((token) => token.isNotEmpty)
+              .map((token) => token.toLowerCase())
+              .toList()
+        : const <String>[];
+
+    final matchedRelayNodes = routeHashes
+        .map(
+          (hash) => TraceNodeResolver.resolveBest(
+            nodes: nodes,
+            localPublicKeys: localPublicKeys,
+            prefixHex: hash,
+            referenceA: senderLatLng,
+            referenceB: recipientLatLng,
+          ),
+        )
+        .toList();
+
+    return _ContactTraceResult(
+      sender: senderNode,
+      recipient: recipientNode,
+      routeHashes: routeHashes,
+      matchedRelayNodes: matchedRelayNodes,
+    );
+  }
+
+  String? _toPrefixHex(List<int>? key) {
+    if (key == null || key.isEmpty) return null;
+    final take = key.length < 6 ? key.length : 6;
+    return key
+        .take(take)
+        .map((b) => b.toRadixString(16).padLeft(2, '0'))
+        .join()
+        .toLowerCase();
+  }
+
+  List<MeshMapNode> _localNodesFromContacts(
+    ContactsProvider contactsProvider, {
+    required ConnectionProvider connectionProvider,
+  }) {
+    final nodes = contactsProvider.contactsWithLocation
+        .map((contact) {
+          final location = contact.displayLocation;
+          if (location == null) return null;
+          return MeshMapNode(
+            type: contact.type.index,
+            name: contact.displayName,
+            publicKey: contact.publicKeyHex.toLowerCase(),
+            latitude: location.latitude,
+            longitude: location.longitude,
+            updatedAtMs: contact.lastAdvert * 1000,
+          );
+        })
+        .whereType<MeshMapNode>()
+        .toList();
+
+    final selfNode = _selfNode(connectionProvider);
+    if (selfNode != null) {
+      nodes.add(selfNode);
+    }
+    return nodes;
+  }
+
+  MeshMapNode? _selfNode(ConnectionProvider connectionProvider) {
+    final publicKey = connectionProvider.deviceInfo.publicKey;
+    final advLat = connectionProvider.deviceInfo.advLat;
+    final advLon = connectionProvider.deviceInfo.advLon;
+    if (publicKey == null || advLat == null || advLon == null) {
+      return null;
+    }
+    if (advLat == 0 && advLon == 0) {
+      return null;
+    }
+
+    return MeshMapNode(
+      type: -1,
+      name: connectionProvider.deviceInfo.selfName?.trim().isNotEmpty == true
+          ? connectionProvider.deviceInfo.selfName!.trim()
+          : 'You',
+      publicKey: publicKey
+          .map((b) => b.toRadixString(16).padLeft(2, '0'))
+          .join()
+          .toLowerCase(),
+      latitude: advLat / 1e6,
+      longitude: advLon / 1e6,
+      updatedAtMs: DateTime.now().millisecondsSinceEpoch,
+    );
+  }
+
+  List<MeshMapNode> _mergeNodes(
+    List<MeshMapNode> preferred,
+    List<MeshMapNode> fallback,
+  ) {
+    final merged = <String, MeshMapNode>{};
+    for (final node in fallback) {
+      merged[node.publicKey] = node;
+    }
+    for (final node in preferred) {
+      merged[node.publicKey] = node;
+    }
+    return merged.values.toList();
+  }
+}
+
+class _ContactTraceResult {
+  final ResolvedTraceNode sender;
+  final ResolvedTraceNode recipient;
+  final List<String> routeHashes;
+  final List<ResolvedTraceNode> matchedRelayNodes;
+
+  const _ContactTraceResult({
+    required this.sender,
+    required this.recipient,
+    required this.routeHashes,
+    required this.matchedRelayNodes,
+  });
+}
+
+class _RouteDisplayEntry {
+  final ResolvedTraceNode resolved;
+  final String label;
+  final String? keyLabel;
+  final String? matchSummary;
+
+  const _RouteDisplayEntry({
+    required this.resolved,
+    required this.label,
+    required this.keyLabel,
+    required this.matchSummary,
+  });
+
+  MeshMapNode? get node => resolved.node;
+
+  factory _RouteDisplayEntry.fromResolved(ResolvedTraceNode resolved) {
+    final node = resolved.node!;
+    return _RouteDisplayEntry(
+      resolved: resolved,
+      label: node.name,
+      keyLabel: node.publicKey.substring(
+        0,
+        math.min(12, node.publicKey.length),
+      ),
+      matchSummary: resolved.matchSummary,
+    );
+  }
+}

lib/widgets/map/trail_controls.dart

@@ -1,7 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import '../../models/contact.dart';
+import '../../models/location_trail.dart';
 import '../../providers/map_provider.dart';
 import '../../providers/contacts_provider.dart';
+import '../../services/gpx_service.dart';
 import '../../services/trail_color_service.dart';
 import '../../l10n/app_localizations.dart';
 
@@ -66,6 +69,31 @@ class TrailControls extends StatelessWidget {
                 const Divider(),
                 const SizedBox(height: 8),
 
+                Wrap(
+                  spacing: 12,
+                  runSpacing: 12,
+                  children: [
+                    OutlinedButton.icon(
+                      onPressed: () => _importTrail(context, mapProvider),
+                      icon: const Icon(Icons.file_upload_outlined),
+                      label: Text(l10n.importFromClipboard),
+                    ),
+                    if (mapProvider.currentTrail != null &&
+                        mapProvider.currentTrail!.points.length >= 2)
+                      OutlinedButton.icon(
+                        onPressed: () => _exportTrail(
+                          context,
+                          mapProvider.currentTrail!,
+                          customName: 'My Trail',
+                        ),
+                        icon: const Icon(Icons.file_download_outlined),
+                        label: Text(l10n.exportToClipboard),
+                      ),
+                  ],
+                ),
+
+                const SizedBox(height: 16),
+
                 // Trail stats
                 if (mapProvider.currentTrail != null &&
                     mapProvider.currentTrail!.points.isNotEmpty)
@@ -104,8 +132,6 @@ class TrailControls extends StatelessWidget {
                     ),
                   ),
 
-                const SizedBox(height: 16),
-
                 // Clear trail button
                 if (mapProvider.currentTrail != null &&
                     mapProvider.currentTrail!.points.isNotEmpty)
@@ -238,7 +264,17 @@ class TrailControls extends StatelessWidget {
                             ),
                           ],
                         ),
-                        title: Text(contact.displayName),
+                        title: Row(
+                          children: [
+                            Expanded(child: Text(contact.displayName)),
+                            IconButton(
+                              tooltip: l10n.exportToClipboard,
+                              icon: const Icon(Icons.file_download_outlined),
+                              onPressed: () =>
+                                  _exportContactTrail(context, contact),
+                            ),
+                          ],
+                        ),
                         subtitle: Text(
                           '${contact.advertHistory.length} points',
                         ),
@@ -266,6 +302,92 @@ class TrailControls extends StatelessWidget {
     );
   }
 
+  Future<void> _importTrail(
+    BuildContext context,
+    MapProvider mapProvider,
+  ) async {
+    final l10n = AppLocalizations.of(context)!;
+
+    try {
+      final importedTrail = await GpxService.importTrailFromFile();
+      if (importedTrail == null || !context.mounted) {
+        return;
+      }
+
+      mapProvider.replaceCurrentTrailWithImport(importedTrail);
+      mapProvider.clearImportedTrail();
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(
+            '${l10n.locationTrail}: ${importedTrail.points.length} ${l10n.points.toLowerCase()}',
+          ),
+        ),
+      );
+    } catch (error) {
+      if (!context.mounted) {
+        return;
+      }
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(l10n.importFailed(error.toString()))),
+      );
+    }
+  }
+
+  Future<void> _exportTrail(
+    BuildContext context,
+    LocationTrail trail, {
+    String? customName,
+  }) async {
+    final l10n = AppLocalizations.of(context)!;
+
+    try {
+      final success = await GpxService.exportTrailToFile(
+        trail,
+        customName: customName,
+      );
+      if (!success && context.mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(l10n.exportFailed('unable to share GPX'))),
+        );
+      }
+    } catch (error) {
+      if (!context.mounted) {
+        return;
+      }
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(l10n.exportFailed(error.toString()))),
+      );
+    }
+  }
+
+  Future<void> _exportContactTrail(BuildContext context, Contact contact) async {
+    await _exportTrail(
+      context,
+      _buildContactTrail(contact),
+      customName: '${contact.displayName} Trail',
+    );
+  }
+
+  LocationTrail _buildContactTrail(Contact contact) {
+    final sortedHistory = [...contact.advertHistory]
+      ..sort((a, b) => a.timestamp.compareTo(b.timestamp));
+
+    return LocationTrail(
+      id: 'contact_${contact.publicKeyHex}',
+      isActive: false,
+      startTime: sortedHistory.first.timestamp,
+      endTime: sortedHistory.last.timestamp,
+      points: sortedHistory
+          .map(
+            (advert) => TrailPoint(
+              position: advert.location,
+              timestamp: advert.timestamp,
+            ),
+          )
+          .toList(),
+    );
+  }
+
   void _showClearConfirmation(
     BuildContext context,
     MapProvider mapProvider,

lib/widgets/messages/image_message_bubble.dart

@@ -403,15 +403,6 @@ class _ImageMessageBubbleState extends State<ImageMessageBubble> {
       }
     }
 
-    if (!sender.routeSupportsLegacyRawTransport) {
-      _clearRequestState();
-      await _showBlockingAlert(
-        'Cannot fetch image',
-        'Sender route uses 3-byte hashes. Raw media fetch is not supported in this client yet.',
-      );
-      return;
-    }
-
     if (sender.routeHopCount >= 2) {
       _showToast(
         'Image fetch over ${sender.routeHopCount} hops may take a while.',
@@ -462,7 +453,7 @@ class _ImageMessageBubbleState extends State<ImageMessageBubble> {
       );
       await conn.sendRawVoicePacket(
         contactPath: sender.outPath,
-        contactPathLen: sender.routeSignedPathLen,
+        contactPathLen: sender.routeEncodedPathLen,
         payload: payload,
       );
     } catch (_) {

lib/widgets/messages/message_bubble.dart

@@ -13,6 +13,7 @@ import '../../providers/connection_provider.dart';
 import '../../providers/drawing_provider.dart';
 import '../../providers/voice_provider.dart';
 import '../../providers/image_provider.dart' as ip;
+import '../../providers/app_provider.dart';
 import '../drawing_minimap_preview.dart';
 import '../../models/ble_packet_log.dart';
 import '../../services/sar_template_service.dart';
@@ -26,6 +27,7 @@ import '../../utils/tictactoe_message_parser.dart';
 import '../../utils/location_formats.dart';
 import '../../l10n/app_localizations.dart';
 import '../../utils/message_extensions.dart';
+import '../../utils/log_rx_route_decoder.dart';
 import '../../models/message_transfer_details.dart';
 import 'voice_message_bubble.dart';
 import 'image_message_bubble.dart';
@@ -44,6 +46,7 @@ import 'system_message_bubble.dart';
 class MessageBubble extends StatefulWidget {
   final Message message;
   final VoidCallback? onTap;
+  final VoidCallback? onReply;
   final bool isHighlighted;
   final VoidCallback? onNavigateToMap;
 
@@ -54,6 +57,7 @@ class MessageBubble extends StatefulWidget {
     super.key,
     required this.message,
     this.onTap,
+    this.onReply,
     this.isHighlighted = false,
     this.onNavigateToMap,
     this.isCompact = false,
@@ -64,6 +68,7 @@ class MessageBubble extends StatefulWidget {
 }
 
 class _MessageBubbleState extends State<MessageBubble> {
+  static final RegExp _mentionPattern = RegExp(r'@\[(.+?)\]');
   bool _isExpanded = false;
   bool _showReceivedStats = false;
 
@@ -91,6 +96,74 @@ class _MessageBubbleState extends State<MessageBubble> {
     });
   }
 
+  Widget _buildMessageTextContent(String text, TextStyle? baseBodyStyle) {
+    final matches = _mentionPattern.allMatches(text).toList();
+    if (matches.isEmpty) {
+      return Text(text, style: baseBodyStyle);
+    }
+
+    final textColor =
+        baseBodyStyle?.color ?? Theme.of(context).colorScheme.onSurface;
+    final mentionFontSize = (baseBodyStyle?.fontSize ?? 14) - 1;
+    final backgroundColor = Theme.of(
+      context,
+    ).colorScheme.primary.withValues(alpha: 0.12);
+    final borderColor = Theme.of(
+      context,
+    ).colorScheme.primary.withValues(alpha: 0.25);
+
+    final spans = <InlineSpan>[];
+    var cursor = 0;
+
+    for (final match in matches) {
+      if (match.start > cursor) {
+        spans.add(
+          TextSpan(
+            text: text.substring(cursor, match.start),
+            style: baseBodyStyle,
+          ),
+        );
+      }
+
+      final mentionName = match.group(1)?.trim() ?? '';
+      if (mentionName.isNotEmpty) {
+        spans.add(
+          WidgetSpan(
+            alignment: PlaceholderAlignment.middle,
+            child: Container(
+              margin: const EdgeInsets.symmetric(horizontal: 1),
+              padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 1),
+              decoration: BoxDecoration(
+                color: backgroundColor,
+                borderRadius: BorderRadius.circular(999),
+                border: Border.all(color: borderColor),
+              ),
+              child: Text(
+                '@$mentionName',
+                style: baseBodyStyle?.copyWith(
+                  color: textColor,
+                  fontSize: mentionFontSize,
+                  fontWeight: FontWeight.w600,
+                  height: 1.0,
+                ),
+              ),
+            ),
+          ),
+        );
+      } else {
+        spans.add(TextSpan(text: match.group(0), style: baseBodyStyle));
+      }
+
+      cursor = match.end;
+    }
+
+    if (cursor < text.length) {
+      spans.add(TextSpan(text: text.substring(cursor), style: baseBodyStyle));
+    }
+
+    return Text.rich(TextSpan(children: spans, style: baseBodyStyle));
+  }
+
   void _handleBubbleTap({required bool isSarMarker, required bool isDrawing}) {
     if (!widget.message.isRead &&
         !widget.message.isSentMessage &&
@@ -209,6 +282,15 @@ class _MessageBubbleState extends State<MessageBubble> {
         child: Column(
           mainAxisSize: MainAxisSize.min,
           children: [
+            if (!isOwnMessage && widget.onReply != null)
+              ListTile(
+                leading: const Icon(Icons.reply),
+                title: Text(AppLocalizations.of(context)!.reply),
+                onTap: () {
+                  Navigator.pop(context);
+                  widget.onReply?.call();
+                },
+              ),
             // Copy text option
             ListTile(
               leading: const Icon(Icons.copy),
@@ -469,6 +551,9 @@ class _MessageBubbleState extends State<MessageBubble> {
     final retryCause = _retryCauseLabel(widget.message);
     final retryResult = _retryResultLabel(widget.message);
     final retryMode = _retryModeLabel(widget.message);
+    final routeMetadata = context
+        .read<MessagesProvider>()
+        .getMessageRouteMetadata(widget.message.id);
 
     final rawLines = <String>[
       'Message ID: ${widget.message.id}',
@@ -790,7 +875,7 @@ class _MessageBubbleState extends State<MessageBubble> {
                               _detailRow(
                                 context,
                                 label: l10n.retryAttempt,
-                                value: '${widget.message.retryAttempt}/3',
+                                value: '${widget.message.retryAttempt}/4',
                               ),
                             if (widget.message.lastRetryAt != null)
                               _detailRow(
@@ -809,6 +894,20 @@ class _MessageBubbleState extends State<MessageBubble> {
                                 label: l10n.floodFallback,
                                 value: l10n.yes,
                               ),
+                            if (routeMetadata?.relayName case final relayName?)
+                              _detailRow(
+                                context,
+                                label: 'Relay',
+                                value: relayName,
+                              ),
+                            if (routeMetadata?.canonicalPath
+                                case final routePath?)
+                              _detailRow(
+                                context,
+                                label: 'Selected path',
+                                value: routePath,
+                                onCopy: () => copyField(routePath),
+                              ),
                             if (retryResult != null)
                               _detailRow(
                                 context,
@@ -885,7 +984,9 @@ class _MessageBubbleState extends State<MessageBubble> {
                               _detailRow(
                                 context,
                                 label: l10n.envelope,
-                                value: envelope != null ? 'VE3 compact' : l10n.unknown,
+                                value: envelope != null
+                                    ? 'VE3 compact'
+                                    : l10n.unknown,
                               ),
                               if (voiceSession != null)
                                 _detailRow(
@@ -1238,12 +1339,10 @@ class _MessageBubbleState extends State<MessageBubble> {
 
       // Logged frame format:
       // [0]=response code 0x88, [1]=snrRaw, [2]=rssi, [3]=packet header, [4]=pathLen
-      final raw = log.rawData;
-      final payloadType = (raw[3] >> 2) & 0x0F;
-      final pathLen = raw[4];
-      if (payloadType != expectedPayloadType) continue;
-      if (pathLen != message.pathLen) continue;
-      if (raw.length < 5 + pathLen) continue;
+      final decoded = LogRxRouteDecoder.decode(log.rawData);
+      if (decoded == null) continue;
+      if (decoded.payloadType != expectedPayloadType) continue;
+      if (decoded.hopCount != message.pathLen) continue;
 
       final deltaMs =
           (log.timestamp.difference(message.receivedAt).inMilliseconds).abs();
@@ -1259,11 +1358,9 @@ class _MessageBubbleState extends State<MessageBubble> {
 
   List<int>? _extractPathBytesFromLog(BlePacketLog? log) {
     if (log == null) return null;
-    final raw = log.rawData;
-    if (raw.length < 6) return null;
-    final pathLen = raw[4];
-    if (pathLen <= 0 || raw.length < 5 + pathLen) return null;
-    return raw.sublist(5, 5 + pathLen);
+    final decoded = LogRxRouteDecoder.decode(log.rawData);
+    if (decoded == null || decoded.pathBytes.isEmpty) return null;
+    return decoded.pathBytes;
   }
 
   void _showDeleteConfirmation(BuildContext context) {
@@ -1545,8 +1642,15 @@ class _MessageBubbleState extends State<MessageBubble> {
       return null;
     }
 
+    final routeMetadata = context
+        .read<MessagesProvider>()
+        .getMessageRouteMetadata(message.id);
+    if (routeMetadata != null) {
+      return routeMetadata.modeLabel;
+    }
+
     if (message.usedFloodFallback) {
-      return 'Flood fallback';
+      return 'Flood route';
     }
 
     if (message.retryAttempt > 0 || message.expectedAckTag != null) {
@@ -1561,9 +1665,17 @@ class _MessageBubbleState extends State<MessageBubble> {
       return null;
     }
 
+    final routeMetadata = context
+        .read<MessagesProvider>()
+        .getMessageRouteMetadata(message.id);
+    final routeLabel = routeMetadata?.modeLabel.toLowerCase();
+
     if (message.deliveryStatus == MessageDeliveryStatus.delivered) {
+      if (routeLabel != null) {
+        return 'Delivered via $routeLabel';
+      }
       if (message.usedFloodFallback) {
-        return 'Delivered after flood fallback';
+        return 'Delivered after flood route';
       }
       if (message.retryAttempt > 0) {
         return 'Delivered after retry';
@@ -1574,8 +1686,11 @@ class _MessageBubbleState extends State<MessageBubble> {
     }
 
     if (message.deliveryStatus == MessageDeliveryStatus.sending) {
+      if (routeLabel != null) {
+        return '$routeLabel in progress';
+      }
       if (message.usedFloodFallback) {
-        return 'Flood fallback in progress';
+        return 'Flood route in progress';
       }
       if (message.retryAttempt > 0) {
         return 'Retry in progress';
@@ -1586,8 +1701,11 @@ class _MessageBubbleState extends State<MessageBubble> {
     }
 
     if (message.deliveryStatus == MessageDeliveryStatus.failed) {
+      if (routeLabel != null) {
+        return 'Failed via $routeLabel';
+      }
       if (message.usedFloodFallback) {
-        return 'Failed after flood fallback';
+        return 'Failed after flood route';
       }
       if (message.retryAttempt > 0) {
         return 'Failed after retry attempts';
@@ -1598,6 +1716,36 @@ class _MessageBubbleState extends State<MessageBubble> {
     return null;
   }
 
+  Widget _buildDirectMessageStatusIndicator(
+    BuildContext context,
+    Message message,
+  ) {
+    switch (message.deliveryStatus) {
+      case MessageDeliveryStatus.delivered:
+        return Icon(
+          Icons.done_all,
+          size: 16,
+          color: Theme.of(context).colorScheme.primary,
+        );
+      case MessageDeliveryStatus.sent:
+        return Icon(
+          Icons.done,
+          size: 16,
+          color: Theme.of(context).colorScheme.onSurfaceVariant,
+        );
+      case MessageDeliveryStatus.sending:
+        return Icon(Icons.schedule, size: 15, color: Colors.orange);
+      case MessageDeliveryStatus.failed:
+        return const Icon(Icons.error_outline, size: 15, color: Colors.red);
+      case MessageDeliveryStatus.received:
+        return Icon(
+          Icons.done_all,
+          size: 16,
+          color: Theme.of(context).colorScheme.onSurfaceVariant,
+        );
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     // Display system messages with minimal styling
@@ -1615,6 +1763,7 @@ class _MessageBubbleState extends State<MessageBubble> {
     }
     final isSarMarker = message.isSarMarker;
     final isDarkMode = Theme.of(context).brightness == Brightness.dark;
+    final messageFontScale = context.watch<AppProvider>().messageFontScale;
 
     // Determine if this is own message
     final connectionProvider = context.read<ConnectionProvider>();
@@ -1641,6 +1790,7 @@ class _MessageBubbleState extends State<MessageBubble> {
         receptionDetails?.rssiDbm ??
         matchedRxLog?.logRxDataInfo?.rssiDbm ??
         message.lastEchoRssiDbm;
+    final routeMetadata = messagesProvider.getMessageRouteMetadata(message.id);
 
     // Look up contact information for rich display name
     final contactsProvider = context.read<ContactsProvider>();
@@ -1728,6 +1878,9 @@ class _MessageBubbleState extends State<MessageBubble> {
         : null;
 
     final shouldFloatBubble = widget.isCompact;
+    final baseBodyStyle = Theme.of(
+      context,
+    ).textTheme.bodyMedium?.copyWith(fontSize: 14 * messageFontScale);
     final bubble = ConstrainedBox(
       constraints: BoxConstraints(
         maxWidth: shouldFloatBubble
@@ -1921,9 +2074,11 @@ class _MessageBubbleState extends State<MessageBubble> {
                         Expanded(
                           child: Text(
                             displayName,
-                            style: Theme.of(context).textTheme.labelMedium
+                            style: Theme.of(context).textTheme.bodySmall
                                 ?.copyWith(
+                                  fontSize: 12,
                                   fontWeight: FontWeight.bold,
+                                  height: 1.1,
                                   color: isOwnMessage
                                       ? Theme.of(context).colorScheme.primary
                                       : null,
@@ -2146,9 +2301,9 @@ class _MessageBubbleState extends State<MessageBubble> {
                     );
 
                     if (drawing == null) {
-                      return Text(
+                      return _buildMessageTextContent(
                         message.text,
-                        style: Theme.of(context).textTheme.bodyMedium,
+                        baseBodyStyle,
                       );
                     }
 
@@ -2235,10 +2390,7 @@ class _MessageBubbleState extends State<MessageBubble> {
                 )
               // Regular message content
               else if (!message.isDrawing || widget.isCompact)
-                Text(
-                  message.text,
-                  style: Theme.of(context).textTheme.bodyMedium,
-                ),
+                _buildMessageTextContent(message.text, baseBodyStyle),
 
               if (!widget.isCompact &&
                   !isSarMarker &&
@@ -2368,7 +2520,7 @@ class _MessageBubbleState extends State<MessageBubble> {
                                   switch (recipient.deliveryStatus) {
                                     case MessageDeliveryStatus.delivered:
                                       statusColor = Colors.green;
-                                      statusIcon = Icons.check_circle;
+                                      statusIcon = Icons.done_all;
                                       statusText =
                                           recipient.roundTripTimeMs != null
                                           ? '${recipient.roundTripTimeMs}ms'
@@ -2376,6 +2528,15 @@ class _MessageBubbleState extends State<MessageBubble> {
                                               context,
                                             )!.delivered;
                                       break;
+                                    case MessageDeliveryStatus.sent:
+                                      statusColor = Theme.of(
+                                        context,
+                                      ).colorScheme.onSurfaceVariant;
+                                      statusIcon = Icons.done;
+                                      statusText = AppLocalizations.of(
+                                        context,
+                                      )!.sent;
+                                      break;
                                     case MessageDeliveryStatus.failed:
                                       statusColor = Colors.red;
                                       statusIcon = Icons.cancel;
@@ -2384,7 +2545,6 @@ class _MessageBubbleState extends State<MessageBubble> {
                                       )!.failed;
                                       break;
                                     case MessageDeliveryStatus.sending:
-                                    case MessageDeliveryStatus.sent:
                                     default:
                                       statusColor = Colors.orange;
                                       statusIcon = Icons.schedule;
@@ -2458,33 +2618,42 @@ class _MessageBubbleState extends State<MessageBubble> {
                           Row(
                             mainAxisSize: MainAxisSize.max,
                             children: [
-                              Icon(
-                                getDeliveryStatusIcon(message.deliveryStatus),
-                                size: 12,
-                                color: getDeliveryStatusColor(
-                                  message.deliveryStatus,
-                                ),
-                              ),
-                              const SizedBox(width: 3),
-                              Expanded(
-                                child: Align(
-                                  alignment: Alignment.centerLeft,
-                                  child: Text(
-                                    message.getLocalizedDeliveryStatus(context),
-                                    maxLines: 1,
-                                    overflow: TextOverflow.ellipsis,
-                                    style: Theme.of(context)
-                                        .textTheme
-                                        .labelSmall
-                                        ?.copyWith(
-                                          color: getDeliveryStatusColor(
-                                            message.deliveryStatus,
-                                          ),
-                                          fontStyle: FontStyle.italic,
-                                        ),
+                              if (message.isContactMessage)
+                                _buildDirectMessageStatusIndicator(
+                                  context,
+                                  message,
+                                )
+                              else ...[
+                                Icon(
+                                  getDeliveryStatusIcon(message.deliveryStatus),
+                                  size: 12,
+                                  color: getDeliveryStatusColor(
+                                    message.deliveryStatus,
                                   ),
                                 ),
-                              ),
+                                const SizedBox(width: 3),
+                                Expanded(
+                                  child: Align(
+                                    alignment: Alignment.centerLeft,
+                                    child: Text(
+                                      message.getLocalizedDeliveryStatus(
+                                        context,
+                                      ),
+                                      maxLines: 1,
+                                      overflow: TextOverflow.ellipsis,
+                                      style: Theme.of(context)
+                                          .textTheme
+                                          .labelSmall
+                                          ?.copyWith(
+                                            color: getDeliveryStatusColor(
+                                              message.deliveryStatus,
+                                            ),
+                                            fontStyle: FontStyle.italic,
+                                          ),
+                                    ),
+                                  ),
+                                ),
+                              ],
                               // Show retry button for failed messages
                               if (message.deliveryStatus ==
                                   MessageDeliveryStatus.failed) ...[
@@ -2570,6 +2739,7 @@ class _MessageBubbleState extends State<MessageBubble> {
           context,
           message: message,
           isSarMarker: isSarMarker,
+          routeMetadata: routeMetadata,
         ),
       ],
     );

lib/widgets/messages/message_bubble_header.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 
 import '../../models/contact.dart';
 import '../../models/message.dart';
+import '../../models/message_route_metadata.dart';
 import '../../utils/avatar_label_helper.dart';
 import '../../utils/message_extensions.dart';
 import '../common/contact_avatar.dart';
@@ -59,6 +60,7 @@ Widget buildBubbleMetaFooter(
   BuildContext context, {
   required Message message,
   required bool isSarMarker,
+  MessageRouteMetadata? routeMetadata,
 }) {
   final metaColor = Theme.of(
     context,
@@ -86,12 +88,13 @@ Widget buildBubbleMetaFooter(
         ).textTheme.labelSmall?.copyWith(color: metaColor),
       ),
     ]);
-  } else if (!isSarMarker && message.pathLen < 255) {
+  } else if (!isSarMarker && _effectivePathLen(message, routeMetadata) < 255) {
+    final effectivePathLen = _effectivePathLen(message, routeMetadata);
     items.addAll([
       Icon(Icons.alt_route, size: 11, color: metaColor),
       const SizedBox(width: 3),
       Text(
-        message.pathLen == 0 ? 'direct' : '${message.pathLen}hop',
+        effectivePathLen == 0 ? 'direct' : '${effectivePathLen}hop',
         style: Theme.of(
           context,
         ).textTheme.labelSmall?.copyWith(color: metaColor),
@@ -124,17 +127,27 @@ Widget buildBubbleMetaFooter(
   );
 }
 
+int _effectivePathLen(Message message, MessageRouteMetadata? routeMetadata) =>
+    routeMetadata?.hopCount ?? message.pathLen;
+
 Widget buildChannelHeaderPill(
   BuildContext context, {
   required String label,
   IconData icon = Icons.campaign_outlined,
+  EdgeInsetsGeometry padding = const EdgeInsets.symmetric(
+    horizontal: 8,
+    vertical: 3,
+  ),
+  double iconSize = 11,
+  double iconSpacing = 5,
+  TextStyle? textStyle,
 }) {
   final labelColor = Theme.of(
     context,
   ).textTheme.labelSmall?.color?.withValues(alpha: 0.82);
 
   return Container(
-    padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+    padding: padding,
     decoration: BoxDecoration(
       color: Theme.of(
         context,
@@ -146,19 +159,21 @@ Widget buildChannelHeaderPill(
       children: [
         Icon(
           icon,
-          size: 11,
+          size: iconSize,
           color: Theme.of(
             context,
           ).textTheme.labelSmall?.color?.withValues(alpha: 0.7),
         ),
-        const SizedBox(width: 5),
+        SizedBox(width: iconSpacing),
         Flexible(
           child: Text(
             label,
-            style: Theme.of(context).textTheme.labelSmall?.copyWith(
-              color: labelColor,
-              fontWeight: FontWeight.w600,
-            ),
+            style:
+                textStyle ??
+                Theme.of(context).textTheme.labelSmall?.copyWith(
+                  color: labelColor,
+                  fontWeight: FontWeight.w600,
+                ),
             maxLines: 1,
             overflow: TextOverflow.ellipsis,
           ),
@@ -176,5 +191,16 @@ Widget buildDirectHeaderCounterpart(
     context,
     label: label,
     icon: Icons.alternate_email,
+    padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
+    iconSize: 10,
+    iconSpacing: 4,
+    textStyle: Theme.of(context).textTheme.labelSmall?.copyWith(
+      fontSize: 10,
+      height: 1.0,
+      color: Theme.of(
+        context,
+      ).textTheme.labelSmall?.color?.withValues(alpha: 0.82),
+      fontWeight: FontWeight.w600,
+    ),
   );
 }

lib/widgets/messages/message_bubble_signal.dart

@@ -1,7 +1,11 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 
 import '../../models/message.dart';
+import '../../models/message_route_metadata.dart';
+import '../../models/path_selection.dart';
 import '../../models/message_reception_details.dart';
+import '../../providers/messages_provider.dart';
 
 IconData getDeliveryStatusIcon(MessageDeliveryStatus status) {
   switch (status) {
@@ -185,6 +189,9 @@ Widget buildSentDirectSignalStatus(
   required int roundTripTimeMs,
   required Duration txEstimate,
 }) {
+  final routeMetadata = context
+      .read<MessagesProvider>()
+      .getMessageRouteMetadata(message.id);
   final estimatedTransmitMs = sanitizeEstimatedTransmitMs(
     estimatedTransmitMs: txEstimate > Duration.zero
         ? txEstimate.inMilliseconds
@@ -203,7 +210,7 @@ Widget buildSentDirectSignalStatus(
       _techChip(
         context,
         icon: Icons.alt_route,
-        label: hopDisplayLabel(message),
+        label: hopDisplayLabelForMessage(message, routeMetadata),
         color: Colors.indigo,
       ),
       _techChip(
@@ -230,7 +237,7 @@ Widget buildSentDirectSignalStatus(
         _techChip(
           context,
           icon: Icons.refresh,
-          label: 'retry ${message.retryAttempt}/3',
+          label: 'retry ${message.retryAttempt}/4',
           color: Colors.redAccent,
         ),
       if (message.suggestedTimeoutMs != null)
@@ -244,7 +251,7 @@ Widget buildSentDirectSignalStatus(
         _techChip(
           context,
           icon: Icons.waves,
-          label: 'flood fallback',
+          label: 'flood route',
           color: Colors.teal,
         )
       else if (message.expectedAckTag != null)
@@ -254,6 +261,17 @@ Widget buildSentDirectSignalStatus(
           label: 'direct ACK',
           color: Colors.indigo,
         ),
+      if (routeMetadata != null)
+        _techChip(
+          context,
+          icon: routeMetadata.mode == PathSelectionMode.nearestRouter
+              ? Icons.router
+              : Icons.alt_route,
+          label: routeMetadata.modeLabel,
+          color: routeMetadata.mode == PathSelectionMode.nearestRouter
+              ? Colors.deepPurple
+              : Colors.indigo,
+        ),
     ],
   );
 }
@@ -277,6 +295,17 @@ String hopDisplayLabel(Message message) {
   return '${message.pathLen} hop${message.pathLen == 1 ? '' : 's'}';
 }
 
+String hopDisplayLabelForMessage(
+  Message message,
+  MessageRouteMetadata? routeMetadata,
+) {
+  final effectivePathLen = routeMetadata?.hopCount ?? message.pathLen;
+  if (effectivePathLen == 0) return 'Direct';
+  if (effectivePathLen >= 255 && message.isContactMessage) return 'Direct';
+  if (effectivePathLen >= 255) return 'Unknown';
+  return '$effectivePathLen hop${effectivePathLen == 1 ? '' : 's'}';
+}
+
 Widget _techChip(
   BuildContext context, {
   required IconData icon,

lib/widgets/messages/message_trace_sheet.dart

@@ -1,6 +1,7 @@
 // ignore_for_file: use_null_aware_elements
 
 import 'dart:math' as math;
+import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart' as flutter_map;
 import 'package:latlong2/latlong.dart';
@@ -9,7 +10,11 @@ import '../../models/ble_packet_log.dart';
 import '../../models/message.dart';
 import '../../providers/connection_provider.dart';
 import '../../providers/contacts_provider.dart';
+import '../../providers/messages_provider.dart';
 import '../../services/mesh_map_nodes_service.dart';
+import '../../services/route_hash_preferences.dart';
+import '../../utils/log_rx_route_decoder.dart';
+import '../../utils/trace_node_resolver.dart';
 
 class MessageTraceSheet extends StatefulWidget {
   final Message message;
@@ -32,10 +37,17 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
   Future<_TraceResult> _loadTrace() async {
     final connectionProvider = context.read<ConnectionProvider>();
     final contactsProvider = context.read<ContactsProvider>();
-    final packetPath = _extractPathFromPacketLogs(
-      logs: connectionProvider.bleService.packetLogs,
-      message: widget.message,
-    );
+    final messagesProvider = context.read<MessagesProvider>();
+    final preferredHashSize = await RouteHashPreferences.getHashSize();
+    final storedPath = messagesProvider
+        .getMessageReceptionDetails(widget.message.id)
+        ?.pathBytes;
+    final packetPath = (storedPath != null && storedPath.isNotEmpty)
+        ? storedPath
+        : _extractPathFromPacketLogs(
+            logs: connectionProvider.bleService.packetLogs,
+            message: widget.message,
+          );
 
     final senderPrefix = _toPrefixHex(widget.message.senderPublicKeyPrefix);
     final recipientPrefix = widget.message.recipientPublicKey != null
@@ -43,22 +55,36 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
         : _toPrefixHex(connectionProvider.deviceInfo.publicKey);
 
     final localNodes = _localNodesFromContacts(contactsProvider);
+    final localPublicKeys = localNodes.map((node) => node.publicKey).toSet();
     var trace = _buildTraceResult(
       nodes: localNodes,
+      localPublicKeys: localPublicKeys,
       packetPath: packetPath,
+      preferredHashSize: preferredHashSize,
       senderPrefix: senderPrefix,
       recipientPrefix: recipientPrefix,
     );
-    if (_isCompleteTrace(trace, expectedRelayCount: math.max(0, widget.message.pathLen))) {
+    if (_isCompleteTrace(
+      trace,
+      expectedRelayCount: math.max(0, widget.message.pathLen),
+    )) {
       return trace;
     }
 
-    final remoteNodes = await MeshMapNodesService.fetchNodes(
+    unawaited(
+      MeshMapNodesService.syncInBackgroundIfStale(
+        cacheTtl: MeshMapNodesService.traceCacheTtl,
+      ),
+    );
+
+    final remoteNodes = await MeshMapNodesService.loadCachedNodes(
       cacheTtl: MeshMapNodesService.traceCacheTtl,
     );
     trace = _buildTraceResult(
       nodes: _mergeNodes(localNodes, remoteNodes),
+      localPublicKeys: localPublicKeys,
       packetPath: packetPath,
+      preferredHashSize: preferredHashSize,
       senderPrefix: senderPrefix,
       recipientPrefix: recipientPrefix,
     );
@@ -92,8 +118,8 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
           final trace = snapshot.data!;
           final routeEntries = _displayRouteEntries(trace);
           final concretePathNodes = routeEntries
-              .where((entry) => entry.node != null)
-              .map((entry) => entry.node!)
+              .where((entry) => entry.resolved.node != null)
+              .map((entry) => entry.resolved.node!)
               .toList();
           final mapPoints = concretePathNodes
               .map((n) => LatLng(n.latitude, n.longitude))
@@ -267,7 +293,7 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
                           ),
                           title: Text(entry.value.label),
                           subtitle: Text(
-                            '${_routeRoleLabel(entry.key, routeEntries.length)}${entry.value.keyLabel == null ? '' : ' • ${entry.value.keyLabel}'}',
+                            '${_routeRoleLabel(entry.key, routeEntries.length)}${entry.value.keyLabel == null ? '' : ' • ${entry.value.keyLabel}'}${entry.value.matchSummary == null ? '' : ' • ${entry.value.matchSummary}'}',
                           ),
                         ),
                       ),
@@ -311,7 +337,10 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
   }
 
   List<MeshMapNode> _relayNodes(_TraceResult trace) {
-    final concrete = trace.matchedPathNodes.whereType<MeshMapNode>().toList();
+    final concrete = trace.matchedPathNodes
+        .map((entry) => entry.node)
+        .whereType<MeshMapNode>()
+        .toList();
     if (concrete.isEmpty) return const [];
 
     if (trace.mode == TraceMode.packetPath) {
@@ -324,45 +353,52 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
   }
 
   List<_RouteDisplayEntry> _displayRouteEntries(_TraceResult trace) {
-    final pathNodes = trace.matchedPathNodes.whereType<MeshMapNode>().toList();
+    final pathNodes = trace.matchedPathNodes
+        .map((entry) => entry.node)
+        .whereType<MeshMapNode>()
+        .toList();
     if (pathNodes.isEmpty) {
       return [
-        if (trace.sender != null) _RouteDisplayEntry.fromNode(trace.sender!),
-        if (trace.recipient != null &&
-            trace.recipient!.publicKey != trace.sender?.publicKey)
-          _RouteDisplayEntry.fromNode(trace.recipient!),
+        if (trace.sender.node != null)
+          _RouteDisplayEntry.fromResolved(trace.sender),
+        if (trace.recipient.node != null &&
+            trace.recipient.node!.publicKey != trace.sender.node?.publicKey)
+          _RouteDisplayEntry.fromResolved(trace.recipient),
       ];
     }
 
     if (trace.mode == TraceMode.packetPath) {
       final entries = trace.matchedPathNodes.asMap().entries.map((entry) {
-        final hashHex = trace.pathHashes[entry.key]
-            .toRadixString(16)
-            .padLeft(2, '0');
+        final hashHex = trace.pathHashes[entry.key].toUpperCase();
         return _RouteDisplayEntry(
-          node: entry.value,
-          label: entry.value?.name ?? 'Unknown',
-          keyLabel: entry.value != null
-              ? _prefixKeyLabel(entry.value!.publicKey)
+          resolved: entry.value,
+          label: entry.value.node?.name ?? 'Unknown',
+          keyLabel: entry.value.node != null
+              ? _prefixKeyLabel(entry.value.node!.publicKey)
               : hashHex,
+          matchSummary: entry.value.matchSummary,
         );
       }).toList();
       final lastKey = pathNodes.last.publicKey;
       return [
         ...entries,
-        if (trace.recipient != null && trace.recipient!.publicKey != lastKey)
-          _RouteDisplayEntry.fromNode(trace.recipient!),
+        if (trace.recipient.node != null &&
+            trace.recipient.node!.publicKey != lastKey)
+          _RouteDisplayEntry.fromResolved(trace.recipient),
       ];
     }
 
     final firstKey = pathNodes.first.publicKey;
     final lastKey = pathNodes.last.publicKey;
     return [
-      if (trace.sender != null && trace.sender!.publicKey != firstKey)
-        _RouteDisplayEntry.fromNode(trace.sender!),
-      ...pathNodes.map(_RouteDisplayEntry.fromNode),
-      if (trace.recipient != null && trace.recipient!.publicKey != lastKey)
-        _RouteDisplayEntry.fromNode(trace.recipient!),
+      if (trace.sender.node != null && trace.sender.node!.publicKey != firstKey)
+        _RouteDisplayEntry.fromResolved(trace.sender),
+      ...trace.matchedPathNodes
+          .where((entry) => entry.node != null)
+          .map(_RouteDisplayEntry.fromResolved),
+      if (trace.recipient.node != null &&
+          trace.recipient.node!.publicKey != lastKey)
+        _RouteDisplayEntry.fromResolved(trace.recipient),
     ];
   }
 
@@ -385,14 +421,6 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
         .toLowerCase();
   }
 
-  MeshMapNode? _bestNodeForPrefix(List<MeshMapNode> nodes, String? prefixHex) {
-    if (prefixHex == null || prefixHex.isEmpty) return null;
-    final matches =
-        nodes.where((n) => n.publicKey.startsWith(prefixHex)).toList()
-          ..sort((a, b) => b.updatedAtMs.compareTo(a.updatedAtMs));
-    return matches.isEmpty ? null : matches.first;
-  }
-
   List<MeshMapNode> _localNodesFromContacts(ContactsProvider contactsProvider) {
     return contactsProvider.contactsWithLocation
         .map((contact) {
@@ -427,39 +455,72 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
 
   _TraceResult _buildTraceResult({
     required List<MeshMapNode> nodes,
+    required Set<String> localPublicKeys,
     required List<int>? packetPath,
+    required int preferredHashSize,
     required String? senderPrefix,
     required String? recipientPrefix,
   }) {
-    final senderNode = _bestNodeForPrefix(nodes, senderPrefix);
-    final recipientNode = _bestNodeForPrefix(nodes, recipientPrefix);
+    final senderNode = TraceNodeResolver.resolveBest(
+      nodes: nodes,
+      localPublicKeys: localPublicKeys,
+      prefixHex: senderPrefix,
+    );
+    final recipientNode = TraceNodeResolver.resolveBest(
+      nodes: nodes,
+      localPublicKeys: localPublicKeys,
+      prefixHex: recipientPrefix,
+    );
+    final senderLatLng = senderNode.node == null
+        ? null
+        : LatLng(senderNode.node!.latitude, senderNode.node!.longitude);
+    final recipientLatLng = recipientNode.node == null
+        ? null
+        : LatLng(recipientNode.node!.latitude, recipientNode.node!.longitude);
 
     if (packetPath != null && packetPath.isNotEmpty) {
+      final hashSize = LogRxRouteDecoder.inferHashSize(
+        packetPath,
+        preferredHashSize: preferredHashSize,
+      );
+      final hopHashes = LogRxRouteDecoder.splitHopHashes(
+        packetPath,
+        hashSize: hashSize,
+      ).reversed.toList();
       final matched = _matchNodesFromPathHashes(
         nodes: nodes,
-        pathHashes: packetPath,
+        localPublicKeys: localPublicKeys,
+        pathHashes: hopHashes,
         senderPrefix: senderPrefix,
         recipientPrefix: recipientPrefix,
+        senderLatLng: senderLatLng,
+        recipientLatLng: recipientLatLng,
       );
       return _TraceResult(
         mode: TraceMode.packetPath,
         sender: senderNode,
         recipient: recipientNode,
-        pathHashes: packetPath,
+        pathHashes: hopHashes,
         matchedPathNodes: matched,
       );
     }
 
     final inferred = _inferRelaysFromHopCount(
       nodes: nodes,
-      sender: senderNode,
-      recipient: recipientNode,
+      sender: senderNode.node,
+      recipient: recipientNode.node,
       relayCount: math.max(0, widget.message.pathLen),
     );
-    final matchedPathNodes = <MeshMapNode?>[
-      if (senderNode != null) senderNode,
-      ...inferred,
-      if (recipientNode != null) recipientNode,
+    final matchedPathNodes = <ResolvedTraceNode>[
+      if (senderNode.node != null) senderNode,
+      ...inferred.map(
+        (node) => ResolvedTraceNode(
+          node: node,
+          matchCount: 1,
+          usedOnlineFallback: false,
+        ),
+      ),
+      if (recipientNode.node != null) recipientNode,
     ];
 
     return _TraceResult(
@@ -472,16 +533,19 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
   }
 
   bool _isCompleteTrace(_TraceResult trace, {required int expectedRelayCount}) {
-    if (trace.sender == null || trace.recipient == null) {
+    if (trace.sender.node == null || trace.recipient.node == null) {
       return false;
     }
 
     if (trace.mode == TraceMode.packetPath) {
       return trace.matchedPathNodes.length == trace.pathHashes.length &&
-          trace.matchedPathNodes.every((node) => node != null);
+          trace.matchedPathNodes.every((node) => node.node != null);
     }
 
-    final concreteCount = trace.matchedPathNodes.whereType<MeshMapNode>().length;
+    final concreteCount = trace.matchedPathNodes
+        .map((entry) => entry.node)
+        .whereType<MeshMapNode>()
+        .length;
     return concreteCount >= expectedRelayCount + 2;
   }
 
@@ -499,13 +563,10 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
     for (final log in logs) {
       if (log.responseCode != 0x88) continue; // pushLogRxData
       if (log.rawData.length < 6) continue;
-      final raw = log.rawData;
-      final header = raw[3];
-      final payloadType = (header >> 2) & 0x0F;
-      final pathLen = raw[4];
-      if (payloadType != expectedPayloadType) continue;
-      if (pathLen != message.pathLen) continue;
-      if (raw.length < 5 + pathLen) continue;
+      final decoded = LogRxRouteDecoder.decode(log.rawData);
+      if (decoded == null) continue;
+      if (decoded.payloadType != expectedPayloadType) continue;
+      if (decoded.hopCount != message.pathLen) continue;
 
       final deltaMs =
           (log.timestamp.difference(message.receivedAt).inMilliseconds).abs();
@@ -516,38 +577,37 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
     }
 
     if (bestLog == null || bestDeltaMs > 30000) return null;
-    final raw = bestLog.rawData;
-    final pathLen = raw[4];
-    return raw.sublist(5, 5 + pathLen);
+    final decoded = LogRxRouteDecoder.decode(bestLog.rawData);
+    if (decoded == null || decoded.pathBytes.isEmpty) {
+      return null;
+    }
+    return decoded.pathBytes;
   }
 
-  List<MeshMapNode?> _matchNodesFromPathHashes({
+  List<ResolvedTraceNode> _matchNodesFromPathHashes({
     required List<MeshMapNode> nodes,
-    required List<int> pathHashes,
+    required Set<String> localPublicKeys,
+    required List<String> pathHashes,
     required String? senderPrefix,
     required String? recipientPrefix,
+    required LatLng? senderLatLng,
+    required LatLng? recipientLatLng,
   }) {
-    final result = <MeshMapNode?>[];
+    final result = <ResolvedTraceNode>[];
     for (var i = 0; i < pathHashes.length; i++) {
-      final hashHex = pathHashes[i].toRadixString(16).padLeft(2, '0');
-      final candidates = nodes
-          .where((n) => n.publicKey.startsWith(hashHex))
-          .toList();
-      if (candidates.isEmpty) {
-        result.add(null);
-        continue;
-      }
-
-      List<MeshMapNode> filtered = candidates;
-      if (i == 0 && senderPrefix != null) {
-        final senderMatches = filtered
-            .where((n) => n.publicKey.startsWith(senderPrefix))
-            .toList();
-        if (senderMatches.isNotEmpty) filtered = senderMatches;
-      }
-
-      filtered.sort((a, b) => b.updatedAtMs.compareTo(a.updatedAtMs));
-      result.add(filtered.first);
+      final hashHex = pathHashes[i].toLowerCase();
+      result.add(
+        TraceNodeResolver.resolveBest(
+          nodes: nodes,
+          localPublicKeys: localPublicKeys,
+          prefixHex: hashHex,
+          preferredPrefix: i == 0
+              ? senderPrefix
+              : (i == pathHashes.length - 1 ? recipientPrefix : null),
+          referenceA: senderLatLng,
+          referenceB: recipientLatLng,
+        ),
+      );
     }
     return result;
   }
@@ -616,10 +676,10 @@ enum TraceMode { packetPath, hopCountInference }
 
 class _TraceResult {
   final TraceMode mode;
-  final MeshMapNode? sender;
-  final MeshMapNode? recipient;
-  final List<int> pathHashes;
-  final List<MeshMapNode?> matchedPathNodes;
+  final ResolvedTraceNode sender;
+  final ResolvedTraceNode recipient;
+  final List<String> pathHashes;
+  final List<ResolvedTraceNode> matchedPathNodes;
 
   const _TraceResult({
     required this.mode,
@@ -631,21 +691,30 @@ class _TraceResult {
 }
 
 class _RouteDisplayEntry {
-  final MeshMapNode? node;
+  final ResolvedTraceNode resolved;
   final String label;
   final String? keyLabel;
+  final String? matchSummary;
 
   const _RouteDisplayEntry({
-    required this.node,
+    required this.resolved,
     required this.label,
     required this.keyLabel,
+    required this.matchSummary,
   });
 
-  factory _RouteDisplayEntry.fromNode(MeshMapNode node) {
+  MeshMapNode? get node => resolved.node;
+
+  factory _RouteDisplayEntry.fromResolved(ResolvedTraceNode resolved) {
+    final node = resolved.node!;
     return _RouteDisplayEntry(
-      node: node,
+      resolved: resolved,
       label: node.name,
-      keyLabel: node.publicKey.substring(0, math.min(12, node.publicKey.length)),
+      keyLabel: node.publicKey.substring(
+        0,
+        math.min(12, node.publicKey.length),
+      ),
+      matchSummary: resolved.matchSummary,
     );
   }
 }

lib/widgets/messages/messages_composer.dart

@@ -1,7 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:provider/provider.dart';
 
 import '../../l10n/app_localizations.dart';
+import '../../providers/app_provider.dart';
 
 class MessagesComposer extends StatelessWidget {
   final TextEditingController textController;
@@ -253,6 +255,10 @@ class _MessageInput extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final messageFontScale = context.watch<AppProvider>().messageFontScale;
+    const baseFontSize = 15.0;
+    final resolvedFontSize = baseFontSize * messageFontScale;
+
     return AnimatedContainer(
       duration: const Duration(milliseconds: 180),
       constraints: const BoxConstraints(minHeight: 46, maxHeight: 132),
@@ -286,12 +292,12 @@ class _MessageInput extends StatelessWidget {
           maxLines: 4,
           keyboardType: TextInputType.multiline,
           inputFormatters: [messageByteLimiter],
-          style: const TextStyle(fontSize: 15),
+          style: TextStyle(fontSize: resolvedFontSize),
           textAlignVertical: TextAlignVertical.center,
           decoration: InputDecoration(
             hintText: AppLocalizations.of(context)!.typeYourMessage,
             hintStyle: TextStyle(
-              fontSize: 15,
+              fontSize: resolvedFontSize,
               color: Theme.of(
                 context,
               ).colorScheme.onSurfaceVariant.withValues(alpha: 0.9),