fix: Use GitHub client #1928

ref:

.github/workflows/build-artifacts.yml

@@ -301,7 +301,7 @@ jobs:
         run: flutter pub get
 
       - name: Build web release
-        run: flutter build web --release --base-href /meshcore-sar/
+        run: flutter build web --wasm --release --base-href /meshcore-sar/
 
       - name: Upload pages artifact
         uses: actions/upload-pages-artifact@v3

Makefile

@@ -135,6 +135,9 @@ clean: ## Clean build artifacts
 	flutter clean
 	rm -rf $(BUILD_DIR)
 
+build-web: ## Build web with WebAssembly
+	flutter build web --wasm --release
+
 # Build for all platforms
 build-all: bump ## Build for Android and iOS
 	flutter build apk --release

ios/Runner.xcodeproj/project.pbxproj

@@ -489,7 +489,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				CURRENT_PROJECT_VERSION = 124;
+				CURRENT_PROJECT_VERSION = 129;
 				DEVELOPMENT_TEAM = JND55328G8;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
@@ -511,7 +511,7 @@
 			buildSettings = {
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 124;
+				CURRENT_PROJECT_VERSION = 129;
 				DEVELOPMENT_TEAM = JND55328G8;
 				GENERATE_INFOPLIST_FILE = YES;
 				MARKETING_VERSION = 1.0;
@@ -530,7 +530,7 @@
 			buildSettings = {
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 124;
+				CURRENT_PROJECT_VERSION = 129;
 				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 = 124;
+				CURRENT_PROJECT_VERSION = 129;
 				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 = 124;
+				CURRENT_PROJECT_VERSION = 129;
 				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 = 124;
+				CURRENT_PROJECT_VERSION = 129;
 				DEVELOPMENT_TEAM = JND55328G8;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;

ios/Runner/Info.plist

@@ -43,7 +43,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>124</string>
+	<string>129</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>ITSAppUsesNonExemptEncryption</key>

ios/fastlane/report.xml

@@ -5,22 +5,22 @@
     
     
       
-      <testcase classname="fastlane.lanes" name="0: default_platform" time="0.00024">
+      <testcase classname="fastlane.lanes" name="0: default_platform" time="0.000201">
         
       </testcase>
     
       
-      <testcase classname="fastlane.lanes" name="1: increment_build_number" time="1.144858">
+      <testcase classname="fastlane.lanes" name="1: increment_build_number" time="0.700922">
         
       </testcase>
     
       
-      <testcase classname="fastlane.lanes" name="2: build_app" time="98.142592">
+      <testcase classname="fastlane.lanes" name="2: build_app" time="102.603385">
         
       </testcase>
     
       
-      <testcase classname="fastlane.lanes" name="3: upload_to_app_store" time="157.12775">
+      <testcase classname="fastlane.lanes" name="3: upload_to_app_store" time="2538.71069">
         
       </testcase>
     

lib/l10n/app_en.arb

@@ -660,6 +660,30 @@
   "@flood": {
     "description": "Flood routing indicator"
   },
+  "autoSend": "Auto Send",
+  "@autoSend": {
+    "description": "Auto send mode - uses current path"
+  },
+  "autoSendDescription": "Send via current path.",
+  "@autoSendDescription": {
+    "description": "Description for auto send mode"
+  },
+  "sendDirect": "Send Direct",
+  "@sendDirect": {
+    "description": "Send direct mode - zero-hop to contact"
+  },
+  "sendDirectDescription": "Send directly to this contact.",
+  "@sendDirectDescription": {
+    "description": "Description for send direct mode"
+  },
+  "sendFlood": "Send Flood",
+  "@sendFlood": {
+    "description": "Send flood mode - via all repeaters"
+  },
+  "sendFloodDescription": "Send via all repeaters.",
+  "@sendFloodDescription": {
+    "description": "Description for send flood mode"
+  },
   "loggedIn": "Logged In",
   "@loggedIn": {
     "description": "Logged in status badge"
@@ -2285,7 +2309,7 @@
   "@change": {
     "description": "Generic change action"
   },
-  "wizardOverviewDescription": "This app combines MeshCore messaging, SAR field updates, mapping, and device tools in one place.",
+  "wizardOverviewDescription": "This app combines MeshCore messaging, SAR field updates, discovery, mapping, and device tools in one place.",
   "@wizardOverviewDescription": {
     "description": "Updated onboarding overview description"
   },
@@ -2297,7 +2321,7 @@
   "@wizardOverviewFeature2": {
     "description": "Updated onboarding overview feature 2"
   },
-  "wizardOverviewFeature3": "Connect over BLE or TCP, then manage the companion radio from inside the app.",
+  "wizardOverviewFeature3": "Connect over BLE, WiFi, or Serial, then manage the companion radio from inside the app.",
   "@wizardOverviewFeature3": {
     "description": "Updated onboarding overview feature 3"
   },
@@ -2410,11 +2434,11 @@
   "@wizardNetworkTitle": {
     "description": "Updated onboarding network page title"
   },
-  "wizardNetworkDescription": "The Contacts tab organizes the network you discover and the routes you learn over time.",
+  "wizardNetworkDescription": "The Contacts and Discovery flows help you find nearby nodes, store repeaters, and manage the routes you learn over time.",
   "@wizardNetworkDescription": {
     "description": "Updated onboarding network page description"
   },
-  "wizardNetworkFeature1": "Review team members, repeaters, rooms, channels, and pending adverts in one list.",
+  "wizardNetworkFeature1": "Discover repeaters and sensors, then review team members, rooms, channels, and pending adverts in one list.",
   "@wizardNetworkFeature1": {
     "description": "Updated onboarding network feature 1"
   },
@@ -2422,7 +2446,7 @@
   "@wizardNetworkFeature2": {
     "description": "Updated onboarding network feature 2"
   },
-  "wizardNetworkFeature3": "Create channels and manage network destinations without leaving the app.",
+  "wizardNetworkFeature3": "Add new repeaters right after you connect, then create channels and manage network destinations without leaving the app.",
   "@wizardNetworkFeature3": {
     "description": "Updated onboarding network feature 3"
   },
@@ -2462,10 +2486,18 @@
   "@wizardToolsFeature2": {
     "description": "Updated onboarding tools feature 2"
   },
-  "wizardToolsFeature3": "Use packet logs, spectrum scan, and developer diagnostics when troubleshooting the mesh.",
+  "wizardToolsFeature3": "Use live traffic, packet logs, spectrum scan, and developer diagnostics when troubleshooting the mesh.",
   "@wizardToolsFeature3": {
     "description": "Updated onboarding tools feature 3"
   },
+  "postConnectDiscoveryTitle": "Discover repeaters now?",
+  "@postConnectDiscoveryTitle": {
+    "description": "Title for the prompt shown after a successful device connection"
+  },
+  "postConnectDiscoveryDescription": "Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.",
+  "@postConnectDiscoveryDescription": {
+    "description": "Body text for the prompt shown after a successful device connection"
+  },
   "contactInSensors": "In Sensors",
   "@contactInSensors": {
     "description": "Contact actions label when already in sensors"
@@ -2770,5 +2802,24 @@
   "captured": "Captured",
   "size": "Size",
   "noCustomChannelsToClear": "No custom channels to clear.",
-  "noDeviceContactsToClear": "No device contacts to clear."
+  "noDeviceContactsToClear": "No device contacts to clear.",
+
+  "setRegionScope": "Set region scope",
+  "regionScope": "Region scope",
+  "regionScopeNone": "None (global)",
+  "clearRegionScope": "Clear scope",
+  "regionScopeWarning": "Only repeaters allowing this region will forward.",
+  "discoverRegions": "Discover from repeaters",
+  "discoveringRegions": "Discovering regions...",
+  "enterRegionName": "Region name (e.g. auckland)",
+  "noRegionsFound": "No regions found on this repeater.",
+  "regionScopeSet": "Region scope set to {name}",
+  "@regionScopeSet": {
+    "placeholders": {
+      "name": {
+        "type": "String"
+      }
+    }
+  },
+  "regionScopeCleared": "Region scope cleared"
 }

lib/l10n/app_localizations.dart

@@ -961,6 +961,42 @@ abstract class AppLocalizations {
   /// **'Flood'**
   String get flood;
 
+  /// Auto send mode - uses current path
+  ///
+  /// In en, this message translates to:
+  /// **'Auto Send'**
+  String get autoSend;
+
+  /// Description for auto send mode
+  ///
+  /// In en, this message translates to:
+  /// **'Send via current path.'**
+  String get autoSendDescription;
+
+  /// Send direct mode - zero-hop to contact
+  ///
+  /// In en, this message translates to:
+  /// **'Send Direct'**
+  String get sendDirect;
+
+  /// Description for send direct mode
+  ///
+  /// In en, this message translates to:
+  /// **'Send directly to this contact.'**
+  String get sendDirectDescription;
+
+  /// Send flood mode - via all repeaters
+  ///
+  /// In en, this message translates to:
+  /// **'Send Flood'**
+  String get sendFlood;
+
+  /// Description for send flood mode
+  ///
+  /// In en, this message translates to:
+  /// **'Send via all repeaters.'**
+  String get sendFloodDescription;
+
   /// Logged in status badge
   ///
   /// In en, this message translates to:
@@ -3219,7 +3255,7 @@ abstract class AppLocalizations {
   /// Updated onboarding overview description
   ///
   /// In en, this message translates to:
-  /// **'This app combines MeshCore messaging, SAR field updates, mapping, and device tools in one place.'**
+  /// **'This app combines MeshCore messaging, SAR field updates, discovery, mapping, and device tools in one place.'**
   String get wizardOverviewDescription;
 
   /// Updated onboarding overview feature 1
@@ -3237,7 +3273,7 @@ abstract class AppLocalizations {
   /// Updated onboarding overview feature 3
   ///
   /// In en, this message translates to:
-  /// **'Connect over BLE or TCP, then manage the companion radio from inside the app.'**
+  /// **'Connect over BLE, WiFi, or Serial, then manage the companion radio from inside the app.'**
   String get wizardOverviewFeature3;
 
   /// Updated onboarding messaging page title
@@ -3387,13 +3423,13 @@ abstract class AppLocalizations {
   /// Updated onboarding network page description
   ///
   /// In en, this message translates to:
-  /// **'The Contacts tab organizes the network you discover and the routes you learn over time.'**
+  /// **'The Contacts and Discovery flows help you find nearby nodes, store repeaters, and manage the routes you learn over time.'**
   String get wizardNetworkDescription;
 
   /// Updated onboarding network feature 1
   ///
   /// In en, this message translates to:
-  /// **'Review team members, repeaters, rooms, channels, and pending adverts in one list.'**
+  /// **'Discover repeaters and sensors, then review team members, rooms, channels, and pending adverts in one list.'**
   String get wizardNetworkFeature1;
 
   /// Updated onboarding network feature 2
@@ -3405,7 +3441,7 @@ abstract class AppLocalizations {
   /// Updated onboarding network feature 3
   ///
   /// In en, this message translates to:
-  /// **'Create channels and manage network destinations without leaving the app.'**
+  /// **'Add new repeaters right after you connect, then create channels and manage network destinations without leaving the app.'**
   String get wizardNetworkFeature3;
 
   /// Updated onboarding map page title
@@ -3465,9 +3501,21 @@ abstract class AppLocalizations {
   /// Updated onboarding tools feature 3
   ///
   /// In en, this message translates to:
-  /// **'Use packet logs, spectrum scan, and developer diagnostics when troubleshooting the mesh.'**
+  /// **'Use live traffic, packet logs, spectrum scan, and developer diagnostics when troubleshooting the mesh.'**
   String get wizardToolsFeature3;
 
+  /// Title for the prompt shown after a successful device connection
+  ///
+  /// In en, this message translates to:
+  /// **'Discover repeaters now?'**
+  String get postConnectDiscoveryTitle;
+
+  /// Body text for the prompt shown after a successful device connection
+  ///
+  /// In en, this message translates to:
+  /// **'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.'**
+  String get postConnectDiscoveryDescription;
+
   /// Contact actions label when already in sensors
   ///
   /// In en, this message translates to:
@@ -4997,6 +5045,72 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'No device contacts to clear.'**
   String get noDeviceContactsToClear;
+
+  /// No description provided for @setRegionScope.
+  ///
+  /// In en, this message translates to:
+  /// **'Set region scope'**
+  String get setRegionScope;
+
+  /// No description provided for @regionScope.
+  ///
+  /// In en, this message translates to:
+  /// **'Region scope'**
+  String get regionScope;
+
+  /// No description provided for @regionScopeNone.
+  ///
+  /// In en, this message translates to:
+  /// **'None (global)'**
+  String get regionScopeNone;
+
+  /// No description provided for @clearRegionScope.
+  ///
+  /// In en, this message translates to:
+  /// **'Clear scope'**
+  String get clearRegionScope;
+
+  /// No description provided for @regionScopeWarning.
+  ///
+  /// In en, this message translates to:
+  /// **'Only repeaters allowing this region will forward.'**
+  String get regionScopeWarning;
+
+  /// No description provided for @discoverRegions.
+  ///
+  /// In en, this message translates to:
+  /// **'Discover from repeaters'**
+  String get discoverRegions;
+
+  /// No description provided for @discoveringRegions.
+  ///
+  /// In en, this message translates to:
+  /// **'Discovering regions...'**
+  String get discoveringRegions;
+
+  /// No description provided for @enterRegionName.
+  ///
+  /// In en, this message translates to:
+  /// **'Region name (e.g. auckland)'**
+  String get enterRegionName;
+
+  /// No description provided for @noRegionsFound.
+  ///
+  /// In en, this message translates to:
+  /// **'No regions found on this repeater.'**
+  String get noRegionsFound;
+
+  /// No description provided for @regionScopeSet.
+  ///
+  /// In en, this message translates to:
+  /// **'Region scope set to {name}'**
+  String regionScopeSet(String name);
+
+  /// No description provided for @regionScopeCleared.
+  ///
+  /// In en, this message translates to:
+  /// **'Region scope cleared'**
+  String get regionScopeCleared;
 }
 
 class _AppLocalizationsDelegate

lib/l10n/app_localizations_de.dart

@@ -481,6 +481,24 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get flood => 'Flut';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Angemeldet';
 
@@ -1898,6 +1916,13 @@ class AppLocalizationsDe extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Nutze Paketprotokolle, Spektrumsuche und Entwicklerdiagnosen zur Fehlersuche im Mesh.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'In Sensoren';
 
@@ -2698,4 +2723,40 @@ class AppLocalizationsDe extends AppLocalizations {
 
   @override
   String get noDeviceContactsToClear => 'Keine Gerätekontakte zum Löschen.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_el.dart

@@ -483,6 +483,24 @@ class AppLocalizationsEl extends AppLocalizations {
   @override
   String get flood => 'Πλημμυρικό';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Συνδεδεμένος';
 
@@ -1905,6 +1923,13 @@ class AppLocalizationsEl extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Χρησιμοποιήστε καταγραφές πακέτων, σάρωση φάσματος και διαγνωστικά προγραμματιστή κατά την αντιμετώπιση προβλημάτων του mesh.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'Στους αισθητήρες';
 
@@ -2700,4 +2725,40 @@ class AppLocalizationsEl extends AppLocalizations {
 
   @override
   String get noDeviceContactsToClear => 'Δεν υπάρχουν επαφές συσκευής.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_en.dart

@@ -478,6 +478,24 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get flood => 'Flood';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Logged In';
 
@@ -1717,7 +1735,7 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get wizardOverviewDescription =>
-      'This app combines MeshCore messaging, SAR field updates, mapping, and device tools in one place.';
+      'This app combines MeshCore messaging, SAR field updates, discovery, mapping, and device tools in one place.';
 
   @override
   String get wizardOverviewFeature1 =>
@@ -1729,7 +1747,7 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get wizardOverviewFeature3 =>
-      'Connect over BLE or TCP, then manage the companion radio from inside the app.';
+      'Connect over BLE, WiFi, or Serial, then manage the companion radio from inside the app.';
 
   @override
   String get wizardMessagingTitle => 'Messaging and Field Reports';
@@ -1819,11 +1837,11 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get wizardNetworkDescription =>
-      'The Contacts tab organizes the network you discover and the routes you learn over time.';
+      'The Contacts and Discovery flows help you find nearby nodes, store repeaters, and manage the routes you learn over time.';
 
   @override
   String get wizardNetworkFeature1 =>
-      'Review team members, repeaters, rooms, channels, and pending adverts in one list.';
+      'Discover repeaters and sensors, then review team members, rooms, channels, and pending adverts in one list.';
 
   @override
   String get wizardNetworkFeature2 =>
@@ -1831,7 +1849,7 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get wizardNetworkFeature3 =>
-      'Create channels and manage network destinations without leaving the app.';
+      'Add new repeaters right after you connect, then create channels and manage network destinations without leaving the app.';
 
   @override
   String get wizardMapOpsTitle => 'Map, Trails, and Shared Geometry';
@@ -1869,7 +1887,14 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get wizardToolsFeature3 =>
-      'Use packet logs, spectrum scan, and developer diagnostics when troubleshooting the mesh.';
+      'Use live traffic, packet logs, spectrum scan, and developer diagnostics when troubleshooting the mesh.';
+
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
 
   @override
   String get contactInSensors => 'In Sensors';
@@ -2662,4 +2687,40 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get noDeviceContactsToClear => 'No device contacts to clear.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_es.dart

@@ -481,6 +481,24 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get flood => 'Inundación';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Sesión iniciada';
 
@@ -1901,6 +1919,13 @@ class AppLocalizationsEs extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Usa registros de paquetes, escaneo de espectro y diagnósticos de desarrollador al solucionar problemas de la malla.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'En Sensores';
 
@@ -2702,4 +2727,40 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get noDeviceContactsToClear =>
       'No hay contactos del dispositivo que borrar.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_fr.dart

@@ -483,6 +483,24 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get flood => 'Inondation';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Connecté';
 
@@ -1905,6 +1923,13 @@ class AppLocalizationsFr extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Utilisez les journaux de paquets, le balayage du spectre et les diagnostics développeur pour dépanner le réseau maillé.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'Dans Capteurs';
 
@@ -2706,4 +2731,40 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get noDeviceContactsToClear =>
       'Aucun contact de l\'appareil à effacer.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_hr.dart

@@ -476,6 +476,24 @@ class AppLocalizationsHr extends AppLocalizations {
   @override
   String get flood => 'Preplavljanje';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Prijavljen';
 
@@ -1881,6 +1899,13 @@ class AppLocalizationsHr extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Koristite zapisnike paketa, skeniranje spektra i razvojnu dijagnostiku pri rješavanju problema s mesh mrežom.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'U Senzorima';
 
@@ -2675,4 +2700,40 @@ class AppLocalizationsHr extends AppLocalizations {
 
   @override
   String get noDeviceContactsToClear => 'Nema kontakata uređaja za brisanje.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_it.dart

@@ -480,6 +480,24 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get flood => 'Flood';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Connesso';
 
@@ -1896,6 +1914,13 @@ class AppLocalizationsIt extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Usa log dei pacchetti, scansione dello spettro e diagnostica sviluppatore per risolvere problemi della mesh.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'Nei Sensori';
 
@@ -2692,4 +2717,40 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get noDeviceContactsToClear =>
       'Nessun contatto dispositivo da cancellare.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_pl.dart

@@ -481,6 +481,24 @@ class AppLocalizationsPl extends AppLocalizations {
   @override
   String get flood => 'Rozgłoszeniowo';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Zalogowano';
 
@@ -1893,6 +1911,13 @@ class AppLocalizationsPl extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Używaj logów pakietów, skanowania widma i diagnostyki deweloperskiej podczas rozwiązywania problemów z mesh.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'W Czujnikach';
 
@@ -2689,4 +2714,40 @@ class AppLocalizationsPl extends AppLocalizations {
   @override
   String get noDeviceContactsToClear =>
       'Brak kontaktów urządzenia do wyczyszczenia.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_pt.dart

@@ -482,6 +482,24 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get flood => 'Inundação';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Conectado';
 
@@ -1900,6 +1918,13 @@ class AppLocalizationsPt extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Use logs de pacotes, varredura de espectro e diagnóstico de desenvolvedor ao solucionar problemas da malha.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'Nos Sensores';
 
@@ -2700,4 +2725,40 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get noDeviceContactsToClear =>
       'Sem contactos do dispositivo para limpar.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_ru.dart

@@ -480,6 +480,24 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get flood => 'Широковещательно';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Вход выполнен';
 
@@ -1890,6 +1908,13 @@ class AppLocalizationsRu extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Используйте журналы пакетов, сканирование спектра и диагностику разработчика для устранения проблем mesh-сети.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'В датчиках';
 
@@ -2685,4 +2710,40 @@ class AppLocalizationsRu extends AppLocalizations {
 
   @override
   String get noDeviceContactsToClear => 'Нет контактов устройства для очистки.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_sl.dart

@@ -477,6 +477,24 @@ class AppLocalizationsSl extends AppLocalizations {
   @override
   String get flood => 'Razpršitev';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Prijavljen';
 
@@ -1881,6 +1899,13 @@ class AppLocalizationsSl extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Uporabite dnevnik paketov, pregled spektra in razvojno diagnostiko pri odpravljanju težav v mesh omrežju.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'V senzorjih';
 
@@ -2675,4 +2700,40 @@ class AppLocalizationsSl extends AppLocalizations {
 
   @override
   String get noDeviceContactsToClear => 'Ni stikov naprave za brisanje.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_tr.dart

@@ -480,6 +480,24 @@ class AppLocalizationsTr extends AppLocalizations {
   @override
   String get flood => 'Yayılım';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Giriş yapıldı';
 
@@ -1883,6 +1901,13 @@ class AppLocalizationsTr extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Mesh sorunlarını giderirken paket günlükleri, spektrum taraması ve geliştirici tanılamalarını kullanın.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'Sensörlerde';
 
@@ -2673,4 +2698,40 @@ class AppLocalizationsTr extends AppLocalizations {
 
   @override
   String get noDeviceContactsToClear => 'Temizlenecek cihaz kişisi yok.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_uk.dart

@@ -480,6 +480,24 @@ class AppLocalizationsUk extends AppLocalizations {
   @override
   String get flood => 'Широкомовно';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => 'Увійшли';
 
@@ -1896,6 +1914,13 @@ class AppLocalizationsUk extends AppLocalizations {
   String get wizardToolsFeature3 =>
       'Використовуйте журнали пакетів, сканування спектра та діагностику розробника для усунення проблем mesh-мережі.';
 
+  @override
+  String get postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => 'У датчиках';
 
@@ -2696,4 +2721,40 @@ class AppLocalizationsUk extends AppLocalizations {
   @override
   String get noDeviceContactsToClear =>
       'Немає контактів пристрою для очищення.';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/app_localizations_zh.dart

@@ -464,6 +464,24 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get flood => '泛洪';
 
+  @override
+  String get autoSend => 'Auto Send';
+
+  @override
+  String get autoSendDescription => 'Send via current path.';
+
+  @override
+  String get sendDirect => 'Send Direct';
+
+  @override
+  String get sendDirectDescription => 'Send directly to this contact.';
+
+  @override
+  String get sendFlood => 'Send Flood';
+
+  @override
+  String get sendFloodDescription => 'Send via all repeaters.';
+
   @override
   String get loggedIn => '已登录';
 
@@ -1796,6 +1814,13 @@ class AppLocalizationsZh extends AppLocalizations {
   @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 postConnectDiscoveryTitle => 'Discover repeaters now?';
+
+  @override
+  String get postConnectDiscoveryDescription =>
+      'Run repeater discovery right after connecting so you can see nearby MeshCore nodes and add them to your network faster.';
+
   @override
   String get contactInSensors => '在传感器中';
 
@@ -2568,4 +2593,40 @@ class AppLocalizationsZh extends AppLocalizations {
 
   @override
   String get noDeviceContactsToClear => '没有设备联系人可清除。';
+
+  @override
+  String get setRegionScope => 'Set region scope';
+
+  @override
+  String get regionScope => 'Region scope';
+
+  @override
+  String get regionScopeNone => 'None (global)';
+
+  @override
+  String get clearRegionScope => 'Clear scope';
+
+  @override
+  String get regionScopeWarning =>
+      'Only repeaters allowing this region will forward.';
+
+  @override
+  String get discoverRegions => 'Discover from repeaters';
+
+  @override
+  String get discoveringRegions => 'Discovering regions...';
+
+  @override
+  String get enterRegionName => 'Region name (e.g. auckland)';
+
+  @override
+  String get noRegionsFound => 'No regions found on this repeater.';
+
+  @override
+  String regionScopeSet(String name) {
+    return 'Region scope set to $name';
+  }
+
+  @override
+  String get regionScopeCleared => 'Region scope cleared';
 }

lib/l10n/untranslated.json

@@ -1 +1,287 @@
-{}
+{
+  "de": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "el": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "es": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "fr": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "hr": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "it": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "pl": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "pt": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "ru": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "sl": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "tr": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "uk": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ],
+
+  "zh": [
+    "autoSend",
+    "autoSendDescription",
+    "sendDirect",
+    "sendDirectDescription",
+    "sendFlood",
+    "sendFloodDescription",
+    "postConnectDiscoveryTitle",
+    "postConnectDiscoveryDescription",
+    "setRegionScope",
+    "regionScope",
+    "regionScopeNone",
+    "clearRegionScope",
+    "regionScopeWarning",
+    "discoverRegions",
+    "discoveringRegions",
+    "enterRegionName",
+    "noRegionsFound",
+    "regionScopeSet",
+    "regionScopeCleared"
+  ]
+}

lib/models/channel.dart

@@ -122,6 +122,15 @@ class Channel {
   /// Base64-encoded PSK for sharing with firmware CLI and related tooling.
   String get pskBase64 => base64.encode(secret);
 
+  /// MeshCore group packets carry the first byte of SHA256(channel secret).
+  int get hashByte {
+    final digest = sha256.convert(secret);
+    return digest.bytes.first;
+  }
+
+  String get hashHex =>
+      hashByte.toRadixString(16).padLeft(2, '0').toUpperCase();
+
   /// Display name for the channel
   /// Returns "Public" for channel 0, otherwise returns the custom name or "Channel N"
   String get displayName {

lib/models/path_history.dart

@@ -9,6 +9,11 @@ class PathRecord {
   final int failureCount;
   final int lastRoundTripTimeMs;
   final DateTime lastUsedAt;
+  final DateTime? lastSucceededAt;
+  final double? senderLatitude;
+  final double? senderLongitude;
+  final double? recipientLatitude;
+  final double? recipientLongitude;
 
   const PathRecord({
     required this.pathBytes,
@@ -19,6 +24,11 @@ class PathRecord {
     required this.failureCount,
     required this.lastRoundTripTimeMs,
     required this.lastUsedAt,
+    required this.lastSucceededAt,
+    required this.senderLatitude,
+    required this.senderLongitude,
+    required this.recipientLatitude,
+    required this.recipientLongitude,
   });
 
   String get signature =>
@@ -36,6 +46,11 @@ class PathRecord {
     int? failureCount,
     int? lastRoundTripTimeMs,
     DateTime? lastUsedAt,
+    DateTime? lastSucceededAt,
+    double? senderLatitude,
+    double? senderLongitude,
+    double? recipientLatitude,
+    double? recipientLongitude,
   }) {
     return PathRecord(
       pathBytes: pathBytes ?? this.pathBytes,
@@ -46,6 +61,11 @@ class PathRecord {
       failureCount: failureCount ?? this.failureCount,
       lastRoundTripTimeMs: lastRoundTripTimeMs ?? this.lastRoundTripTimeMs,
       lastUsedAt: lastUsedAt ?? this.lastUsedAt,
+      lastSucceededAt: lastSucceededAt ?? this.lastSucceededAt,
+      senderLatitude: senderLatitude ?? this.senderLatitude,
+      senderLongitude: senderLongitude ?? this.senderLongitude,
+      recipientLatitude: recipientLatitude ?? this.recipientLatitude,
+      recipientLongitude: recipientLongitude ?? this.recipientLongitude,
     );
   }
 
@@ -59,6 +79,11 @@ class PathRecord {
       'failure_count': failureCount,
       'last_round_trip_time_ms': lastRoundTripTimeMs,
       'last_used_at': lastUsedAt.toIso8601String(),
+      'last_succeeded_at': lastSucceededAt?.toIso8601String(),
+      'sender_latitude': senderLatitude,
+      'sender_longitude': senderLongitude,
+      'recipient_latitude': recipientLatitude,
+      'recipient_longitude': recipientLongitude,
     };
   }
 
@@ -79,6 +104,13 @@ class PathRecord {
       lastUsedAt:
           DateTime.tryParse(json['last_used_at'] as String? ?? '') ??
           DateTime.fromMillisecondsSinceEpoch(0),
+      lastSucceededAt: DateTime.tryParse(
+        json['last_succeeded_at'] as String? ?? '',
+      ),
+      senderLatitude: (json['sender_latitude'] as num?)?.toDouble(),
+      senderLongitude: (json['sender_longitude'] as num?)?.toDouble(),
+      recipientLatitude: (json['recipient_latitude'] as num?)?.toDouble(),
+      recipientLongitude: (json['recipient_longitude'] as num?)?.toDouble(),
     );
   }
 }

lib/providers/app_provider.dart

@@ -2,7 +2,8 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:math' as math;
 import 'package:flutter/foundation.dart';
-import 'package:meshcore_client/meshcore_client.dart' show BufferReader;
+import 'package:meshcore_client/meshcore_client.dart'
+    show BufferReader, MeshCoreConstants;
 import 'package:shared_preferences/shared_preferences.dart';
 import 'connection_provider.dart';
 import 'contacts_provider.dart';
@@ -211,6 +212,8 @@ class AppProvider with ChangeNotifier {
   static const int _maxPacketRetryAttempts = 4;
   final Map<String, String> _voiceSessionSenderKey6 = {};
   final Map<String, String> _imageSessionSenderKey6 = {};
+  final Map<String, Map<int, VoicePacket>> _pendingChannelVoicePackets = {};
+  final Map<String, Map<int, ImagePacket>> _pendingChannelImageFragments = {};
   final Map<String, Timer> _voiceMissingRetryTimers = {};
   final Map<String, int> _voiceMissingRetryAttempts = {};
   final Map<String, Timer> _imageMissingRetryTimers = {};
@@ -1315,6 +1318,7 @@ class AppProvider with ChangeNotifier {
               .toLowerCase();
         }
         voiceProvider.registerEnvelope(voiceEnvelope);
+        _replayPendingChannelVoicePackets(voiceEnvelope.sessionId);
         enrichedMessage = enrichedMessage.copyWith(
           isVoice: true,
           voiceId: voiceEnvelope.sessionId,
@@ -1352,6 +1356,7 @@ class AppProvider with ChangeNotifier {
               .toLowerCase();
         }
         imageProvider.registerEnvelope(imageEnvelope);
+        _replayPendingChannelImageFragments(imageEnvelope.sessionId);
         messagesProvider.addMessage(
           enrichedMessage,
           contactLookup: (name) {
@@ -1469,15 +1474,7 @@ class AppProvider with ChangeNotifier {
         return;
       }
 
-      final fastGpsPacket = FastGpsPacket.tryParseBinary(payload);
-      if (fastGpsPacket != null) {
-        final sender = _resolveContactByPrefixHex(fastGpsPacket.senderKey6);
-        if (sender != null) {
-          contactsProvider.updateFastGps(
-            sender.publicKey.sublist(0, 6),
-            fastGpsPacket,
-          );
-        }
+      if (_handleFastGpsPayload(payload)) {
         return;
       }
 
@@ -1614,66 +1611,44 @@ class AppProvider with ChangeNotifier {
         return;
       }
 
-      if (ImagePacket.isImageBinary(payload)) {
-        final frag = ImagePacket.tryParseBinary(payload);
-        if (frag == null) return;
-        debugPrint('📷 [AppProvider] Binary image fragment received: $frag');
-        final session = imageProvider.session(frag.sessionId);
-        if (session == null && frag.total < 1) {
-          debugPrint(
-            '⚠️ [AppProvider] Dropping compact image fragment without envelope '
-            'for session ${frag.sessionId}',
-          );
-          return;
-        }
-        imageProvider.addFragment(
-          session == null
-              ? frag
-              : ImagePacket(
-                  sessionId: frag.sessionId,
-                  format: session.format,
-                  index: frag.index,
-                  total: session.total,
-                  data: frag.data,
-                ),
-          width: session?.width ?? 0,
-          height: session?.height ?? 0,
-        );
-        _scheduleImageMissingRetry(
-          frag.sessionId,
-          justComplete: imageProvider.isComplete(frag.sessionId),
-        );
+      if (_handleIncomingImageBinaryPayload(payload)) {
         return;
       }
-
-      if (!VoicePacket.isVoiceBinary(payload)) return;
-      final pkt = VoicePacket.tryParseBinary(payload);
-      if (pkt == null) return;
-      debugPrint('🎙️ [AppProvider] Binary voice packet received: $pkt');
-      final session = voiceProvider.session(pkt.sessionId);
-      if (session == null && pkt.total < 1) {
-        debugPrint(
-          '⚠️ [AppProvider] Dropping compact voice packet without envelope '
-          'for session ${pkt.sessionId}',
-        );
-        return;
-      }
-      final justComplete = voiceProvider.addPacket(
-        session == null
-            ? pkt
-            : VoicePacket(
-                sessionId: pkt.sessionId,
-                mode: session.mode,
-                index: pkt.index,
-                total: session.total,
-                codec2Data: pkt.codec2Data,
-              ),
-      );
-      _scheduleVoiceMissingRetry(pkt.sessionId, justComplete: justComplete);
-      // Insert or update the placeholder message in the chat list
-      _handleIncomingVoicePacket(pkt, justComplete: justComplete);
+      _handleIncomingVoiceBinaryPayload(payload);
     };
 
+    connectionProvider.onChannelDataReceived =
+        (channelIdx, pathLen, dataType, payload, snrRaw, rssiDbm) {
+          if (dataType != MeshCoreConstants.dataTypeDev) {
+            debugPrint(
+              '📦 [AppProvider] Ignoring channel datagram type '
+              '0x${dataType.toRadixString(16).padLeft(4, '0')} on channel $channelIdx',
+            );
+            return;
+          }
+
+          if (_handleFastGpsPayload(payload)) {
+            return;
+          }
+          if (_handleIncomingImageBinaryPayload(
+            payload,
+            allowPreEnvelopeBuffer: true,
+          )) {
+            return;
+          }
+          if (_handleIncomingVoiceBinaryPayload(
+            payload,
+            allowPreEnvelopeBuffer: true,
+          )) {
+            return;
+          }
+
+          debugPrint(
+            '📦 [AppProvider] Unknown developer channel payload on channel '
+            '$channelIdx: ${payload.isNotEmpty ? payload.first : -1}',
+          );
+        };
+
     connectionProvider.onControlDataReceived =
         (payload, snrRaw, rssiDbm, pathLen) {
           _handleControlDataDiscovery(
@@ -1786,6 +1761,7 @@ class AppProvider with ChangeNotifier {
           return _prepareDirectMessageSend(
             messageId: messageId,
             contact: contact,
+            retryAttempt: retryAttempt,
           );
         };
 
@@ -1855,23 +1831,47 @@ class AppProvider with ChangeNotifier {
   Future<Contact> _prepareDirectMessageSend({
     required String messageId,
     required Contact contact,
+    required int retryAttempt,
   }) async {
     final latestContact =
         contactsProvider.findContactByKey(contact.publicKey) ?? contact;
     var session = _directMessageRouteSessions[messageId];
     if (session == null) {
-      final selection = await _pathHistoryService.getSelectionForContact(
-        latestContact,
-        autoRouteRotationEnabled: _autoRouteRotationEnabled,
-      );
+      final selection = latestContact.routeHasPath && latestContact.routeHopCount > 0
+          ? PathSelection(
+              mode: PathSelectionMode.directCurrent,
+              pathBytes: Uint8List.fromList(latestContact.routePathBytes),
+              hopCount: latestContact.routeHopCount,
+              hashSize: latestContact.routeHashSize,
+            )
+          : await _pathHistoryService.getSelectionForContact(
+              latestContact,
+              autoRouteRotationEnabled: _autoRouteRotationEnabled,
+            );
       session = _DirectMessageRouteSession(
         currentSelection: selection,
         originalRoute: ContactRouteCodec.fromContact(latestContact),
         routerFallbackAttempted: false,
       );
-      _directMessageRouteSessions[messageId] = session;
     }
 
+    if (!session.routerFallbackAttempted) {
+      final currentSignature =
+          latestContact.routeHasPath && latestContact.routeHopCount > 0
+          ? latestContact.routePathBytes
+                .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
+                .join()
+          : null;
+      final selection = await _resolveDirectMessageSelectionForRetry(
+        latestContact,
+        retryAttempt: retryAttempt,
+        currentSignature: currentSignature,
+        fallbackSelection: session.currentSelection,
+      );
+      session = session.copyWith(currentSelection: selection);
+    }
+    _directMessageRouteSessions[messageId] = session;
+
     await _applyPathSelection(
       latestContact,
       session.currentSelection,
@@ -1882,6 +1882,43 @@ class AppProvider with ChangeNotifier {
         latestContact;
   }
 
+  Future<PathSelection> _resolveDirectMessageSelectionForRetry(
+    Contact contact, {
+    required int retryAttempt,
+    required String? currentSignature,
+    required PathSelection fallbackSelection,
+  }) async {
+    if (contact.routeHasPath && contact.routeHopCount > 0 && retryAttempt <= 1) {
+      return PathSelection(
+        mode: PathSelectionMode.directCurrent,
+        pathBytes: Uint8List.fromList(contact.routePathBytes),
+        hopCount: contact.routeHopCount,
+        hashSize: contact.routeHashSize,
+      );
+    }
+
+    if (retryAttempt == 2) {
+      return PathSelection.flood();
+    }
+
+    if (retryAttempt >= 3) {
+      final historicalSelection = await _pathHistoryService
+          .getLastSuccessfulDirectSelection(
+            contact,
+            excludeSignature: currentSignature,
+            senderLatitude: locationTrackingService.currentPosition?.latitude,
+            senderLongitude: locationTrackingService.currentPosition?.longitude,
+            recipientLatitude: contact.displayLocation?.latitude,
+            recipientLongitude: contact.displayLocation?.longitude,
+          );
+      if (historicalSelection != null) {
+        return historicalSelection;
+      }
+    }
+
+    return fallbackSelection;
+  }
+
   Future<void> _applyPathSelection(
     Contact contact,
     PathSelection selection, {
@@ -2056,6 +2093,10 @@ class AppProvider with ChangeNotifier {
         session.currentSelection,
         success: true,
         roundTripTimeMs: roundTripTimeMs,
+        senderLatitude: locationTrackingService.currentPosition?.latitude,
+        senderLongitude: locationTrackingService.currentPosition?.longitude,
+        recipientLatitude: contact.displayLocation?.latitude,
+        recipientLongitude: contact.displayLocation?.longitude,
       ),
     );
   }
@@ -2805,6 +2846,23 @@ class AppProvider with ChangeNotifier {
       return;
     }
 
+    final channelIdx = locationTrackingService.fastLocationChannelIdx;
+    if (channelIdx == null) {
+      return;
+    }
+
+    final hasTargetChannel = contactsProvider.channels.any(
+      (channel) =>
+          (channel.publicKey.length > 1 ? channel.publicKey[1] : 0) ==
+          channelIdx,
+    );
+    if (!hasTargetChannel) {
+      debugPrint(
+        '⚠️ [AppProvider] Fast GPS target channel $channelIdx is unavailable',
+      );
+      return;
+    }
+
     final publicKey = connectionProvider.deviceInfo.publicKey;
     if (publicKey == null || publicKey.length < 6) {
       return;
@@ -2821,16 +2879,46 @@ class AppProvider with ChangeNotifier {
       timestampSeconds: DateTime.now().millisecondsSinceEpoch ~/ 1000,
     );
     debugPrint(
-      '📍 [AppProvider] Sending fast GPS update ($reason): '
-      '${position.latitude}, ${position.longitude}',
+      '📤 [AppProvider] Fast GPS send '
+      'reason=$reason '
+      'sender=$senderKey6 '
+      'channel=$channelIdx '
+      'lat=${position.latitude} '
+      'lon=${position.longitude} '
+      'ts=${packet.timestampSeconds}',
     );
     try {
-      await connectionProvider.sendRawPrivateMulticast(packet.encodeBinary());
+      await connectionProvider.sendChannelData(
+        channelIdx: channelIdx,
+        dataType: MeshCoreConstants.dataTypeDev,
+        payload: packet.encodeBinary(),
+      );
+      debugPrint(
+        '✅ [AppProvider] Fast GPS sent '
+        'sender=$senderKey6 channel=$channelIdx ts=${packet.timestampSeconds}',
+      );
     } catch (e) {
       debugPrint('⚠️ [AppProvider] Fast GPS send failed: $e');
     }
   }
 
+  Future<bool> sendTestFastLocationUpdate() async {
+    if (!connectionProvider.deviceInfo.isConnected) {
+      return false;
+    }
+
+    final position = await locationTrackingService.getCurrentPosition(
+      timeLimit: const Duration(seconds: 10),
+      retryCount: 1,
+    );
+    if (position == null) {
+      return false;
+    }
+
+    await _sendFastLocationUpdate(position, reason: 'test');
+    return true;
+  }
+
   Contact? _resolveVoiceFetchRequester(VoiceFetchRequest request) {
     final liveContact = _resolveContactByPrefixHex(request.requesterKey6);
     if (liveContact != null) {
@@ -3363,6 +3451,173 @@ class AppProvider with ChangeNotifier {
     });
   }
 
+  bool _handleFastGpsPayload(Uint8List payload) {
+    final fastGpsPacket = FastGpsPacket.tryParseBinary(payload);
+    if (fastGpsPacket == null) {
+      return false;
+    }
+
+    final sender = _resolveContactByPrefixHex(fastGpsPacket.senderKey6);
+    if (sender != null) {
+      contactsProvider.updateFastGps(
+        sender.publicKey.sublist(0, 6),
+        fastGpsPacket,
+      );
+    }
+    return true;
+  }
+
+  bool _handleIncomingImageBinaryPayload(
+    Uint8List payload, {
+    bool allowPreEnvelopeBuffer = false,
+  }) {
+    if (!ImagePacket.isImageBinary(payload)) {
+      return false;
+    }
+    final frag = ImagePacket.tryParseBinary(payload);
+    if (frag == null) {
+      return true;
+    }
+    debugPrint('📷 [AppProvider] Binary image fragment received: $frag');
+    final session = imageProvider.session(frag.sessionId);
+    if (session == null && frag.total < 1) {
+      if (allowPreEnvelopeBuffer) {
+        _pendingChannelImageFragments.putIfAbsent(
+          frag.sessionId,
+          () => <int, ImagePacket>{},
+        )[frag.index] = frag;
+        debugPrint(
+          '📷 [AppProvider] Buffered compact image fragment before envelope '
+          'for session ${frag.sessionId} index=${frag.index}',
+        );
+      } else {
+        debugPrint(
+          '⚠️ [AppProvider] Dropping compact image fragment without envelope '
+          'for session ${frag.sessionId}',
+        );
+      }
+      return true;
+    }
+
+    imageProvider.addFragment(
+      session == null
+          ? frag
+          : ImagePacket(
+              sessionId: frag.sessionId,
+              format: session.format,
+              index: frag.index,
+              total: session.total,
+              data: frag.data,
+            ),
+      width: session?.width ?? 0,
+      height: session?.height ?? 0,
+    );
+    _scheduleImageMissingRetry(
+      frag.sessionId,
+      justComplete: imageProvider.isComplete(frag.sessionId),
+    );
+    return true;
+  }
+
+  bool _handleIncomingVoiceBinaryPayload(
+    Uint8List payload, {
+    bool allowPreEnvelopeBuffer = false,
+  }) {
+    if (!VoicePacket.isVoiceBinary(payload)) {
+      return false;
+    }
+    final pkt = VoicePacket.tryParseBinary(payload);
+    if (pkt == null) {
+      return true;
+    }
+    debugPrint('🎙️ [AppProvider] Binary voice packet received: $pkt');
+    final session = voiceProvider.session(pkt.sessionId);
+    if (session == null && pkt.total < 1) {
+      if (allowPreEnvelopeBuffer) {
+        _pendingChannelVoicePackets.putIfAbsent(
+          pkt.sessionId,
+          () => <int, VoicePacket>{},
+        )[pkt.index] = pkt;
+        debugPrint(
+          '🎙️ [AppProvider] Buffered compact voice packet before envelope '
+          'for session ${pkt.sessionId} index=${pkt.index}',
+        );
+      } else {
+        debugPrint(
+          '⚠️ [AppProvider] Dropping compact voice packet without envelope '
+          'for session ${pkt.sessionId}',
+        );
+      }
+      return true;
+    }
+
+    final normalizedPacket = session == null
+        ? pkt
+        : VoicePacket(
+            sessionId: pkt.sessionId,
+            mode: session.mode,
+            index: pkt.index,
+            total: session.total,
+            codec2Data: pkt.codec2Data,
+          );
+    final justComplete = voiceProvider.addPacket(normalizedPacket);
+    _scheduleVoiceMissingRetry(pkt.sessionId, justComplete: justComplete);
+    _handleIncomingVoicePacket(normalizedPacket, justComplete: justComplete);
+    return true;
+  }
+
+  void _replayPendingChannelVoicePackets(String sessionId) {
+    final pending = _pendingChannelVoicePackets.remove(sessionId);
+    final session = voiceProvider.session(sessionId);
+    if (pending == null || pending.isEmpty || session == null) {
+      return;
+    }
+
+    final indices = pending.keys.toList()..sort();
+    for (final index in indices) {
+      final packet = pending[index]!;
+      final normalizedPacket = VoicePacket(
+        sessionId: packet.sessionId,
+        mode: session.mode,
+        index: packet.index,
+        total: session.total,
+        codec2Data: packet.codec2Data,
+      );
+      final justComplete = voiceProvider.addPacket(normalizedPacket);
+      _scheduleVoiceMissingRetry(sessionId, justComplete: justComplete);
+      _handleIncomingVoicePacket(normalizedPacket, justComplete: justComplete);
+    }
+  }
+
+  void _replayPendingChannelImageFragments(String sessionId) {
+    final pending = _pendingChannelImageFragments.remove(sessionId);
+    final session = imageProvider.session(sessionId);
+    if (pending == null || pending.isEmpty || session == null) {
+      return;
+    }
+
+    final indices = pending.keys.toList()..sort();
+    for (final index in indices) {
+      final fragment = pending[index]!;
+      final normalizedFragment = ImagePacket(
+        sessionId: fragment.sessionId,
+        format: session.format,
+        index: fragment.index,
+        total: session.total,
+        data: fragment.data,
+      );
+      imageProvider.addFragment(
+        normalizedFragment,
+        width: session.width,
+        height: session.height,
+      );
+      _scheduleImageMissingRetry(
+        sessionId,
+        justComplete: imageProvider.isComplete(sessionId),
+      );
+    }
+  }
+
   /// Insert or update a voice placeholder message for binary raw-data packets.
   ///
   /// Binary voice packets arrive without a chat message, so we synthesise one
@@ -3767,6 +4022,8 @@ class AppProvider with ChangeNotifier {
     _imageMissingRetryAttempts.clear();
     _voiceSessionSenderKey6.clear();
     _imageSessionSenderKey6.clear();
+    _pendingChannelVoicePackets.clear();
+    _pendingChannelImageFragments.clear();
     _lowBatteryNotifiedNodeIds.clear();
     notifyListeners();
   }
@@ -3876,6 +4133,8 @@ class AppProvider with ChangeNotifier {
     for (final timer in _imageMissingRetryTimers.values) {
       timer.cancel();
     }
+    _pendingChannelVoicePackets.clear();
+    _pendingChannelImageFragments.clear();
     super.dispose();
   }
 }

lib/providers/channels_provider.dart

@@ -29,6 +29,16 @@ class ChannelsProvider with ChangeNotifier {
     return index == 0 ? 'Public' : 'Channel $index';
   }
 
+  List<Channel> getChannelsByHashByte(int hashByte) {
+    return _channels.values.where((channel) => channel.hashByte == hashByte).toList()
+      ..sort((a, b) => a.index.compareTo(b.index));
+  }
+
+  String? getUniqueChannelDisplayNameByHashByte(int hashByte) {
+    final matches = getChannelsByHashByte(hashByte);
+    return matches.length == 1 ? matches.single.displayName : null;
+  }
+
   /// Add or update a channel
   void addOrUpdateChannel({
     required int index,

lib/providers/connection_provider.dart

@@ -47,6 +47,23 @@ class PingResult {
   });
 }
 
+/// Result of a relay ping (trace path) operation
+class RelayPingResult {
+  final bool success;
+  final int durationMs;
+  final double snrThere;
+  final double snrBack;
+  final int hopCount;
+
+  const RelayPingResult({
+    required this.success,
+    required this.durationMs,
+    required this.snrThere,
+    required this.snrBack,
+    required this.hopCount,
+  });
+}
+
 /// Scanned device with RSSI information
 class ScannedDevice {
   final BluetoothDevice device;
@@ -105,8 +122,6 @@ class ConnectionProvider with ChangeNotifier {
 
   bool _isScanning = false;
   bool get isScanning => _isScanning;
-  bool _isSpectrumScanActive = false;
-  bool get isSpectrumScanActive => _isSpectrumScanActive;
   final Set<int> _pendingDeletedChannelIndices = <int>{};
 
   String? _error;
@@ -174,6 +189,8 @@ class ConnectionProvider with ChangeNotifier {
       MessageDeliveryTracker();
   final PingTracker _pingTracker = PingTracker();
   final Map<String, Future<PingResult>> _pendingSmartPings = {};
+  final Map<int, Completer<RelayPingResult>> _pendingRelayPings = {};
+  final Map<int, int> _relayPingStartTimes = {};
 
   // Expose room login states
   Map<String, RoomLoginState> get roomLoginStates =>
@@ -212,6 +229,15 @@ class ConnectionProvider with ChangeNotifier {
   onMessageEchoDetected;
   Function(Uint8List publicKeyPrefix, Uint8List statusData)? onStatusResponse;
   Function(Uint8List payload, int snrRaw, int rssiDbm)? onRawDataReceived;
+  Function(
+    int channelIdx,
+    int pathLen,
+    int dataType,
+    Uint8List payload,
+    int snrRaw,
+    int? rssiDbm,
+  )?
+  onChannelDataReceived;
   Function(Uint8List payload, int snrRaw, int rssiDbm, int pathLen)?
   onControlDataReceived;
   Contact? Function(Uint8List contactPublicKey)? resolveContactForDmCallback;
@@ -463,10 +489,6 @@ class ConnectionProvider with ChangeNotifier {
     };
 
     service.onMessageWaiting = () {
-      if (_isSpectrumScanActive) {
-        debugPrint('📥 [Provider] MSG_WAITING ignored during spectrum scan');
-        return;
-      }
       if (!(canStartAutomaticMessageSyncCallback?.call() ?? true)) {
         _pendingAutomaticMessageSync = true;
         debugPrint(
@@ -533,6 +555,16 @@ class ConnectionProvider with ChangeNotifier {
 
     service.onRawDataReceived = (payload, snrRaw, rssiDbm) =>
         onRawDataReceived?.call(payload, snrRaw, rssiDbm);
+    service.onChannelDataReceived =
+        (channelIdx, pathLen, dataType, payload, snrRaw, rssiDbm) =>
+            onChannelDataReceived?.call(
+              channelIdx,
+              pathLen,
+              dataType,
+              payload,
+              snrRaw,
+              rssiDbm,
+            );
     service.onControlDataReceived = (payload, snrRaw, rssiDbm, pathLen) =>
         onControlDataReceived?.call(payload, snrRaw, rssiDbm, pathLen);
 
@@ -548,10 +580,14 @@ class ConnectionProvider with ChangeNotifier {
         semanticVersion: deviceInfo['semanticVersion'] as String?,
         clientRepeat: deviceInfo['clientRepeat'] as bool?,
         pathHashMode: deviceInfo['pathHashMode'] as int?,
-        supportsSpectrumScan: deviceInfo['supportsSpectrumScan'] as bool?,
-        spectrumScanMinKhz: deviceInfo['spectrumScanMinKhz'] as int?,
-        spectrumScanMaxKhz: deviceInfo['spectrumScanMaxKhz'] as int?,
       );
+
+      // Clear any stale flood scope on connect (firmware v8+)
+      final fwVer = deviceInfo['firmwareVersion'] as int?;
+      if (fwVer != null && fwVer >= 8) {
+        clearFloodScope();
+      }
+
       notifyListeners();
     };
 
@@ -614,6 +650,10 @@ class ConnectionProvider with ChangeNotifier {
       notifyListeners();
     };
 
+    service.onTraceDataReceived = (nonce, hopCount, snrThere, snrBack) {
+      _handleTraceDataReceived(nonce, hopCount, snrThere, snrBack);
+    };
+
     service.onTxActivity = () {
       _txActivity = true;
       notifyListeners();
@@ -1724,6 +1764,7 @@ class ConnectionProvider with ChangeNotifier {
     required int channelIdx,
     required String text,
     String? messageId,
+    Uint8List? floodScopeKey,
   }) async {
     if (!_activeService.isConnected) {
       _error = 'Not connected to device';
@@ -1736,10 +1777,12 @@ class ConnectionProvider with ChangeNotifier {
       debugPrint('  Channel: $channelIdx');
       debugPrint('  Text: $text');
       debugPrint('  MessageID: $messageId');
+      debugPrint('  FloodScope: ${floodScopeKey != null ? "set (${floodScopeKey.length}B)" : "none"}');
 
       await _activeService.sendChannelMessage(
         channelIdx: channelIdx,
         text: text,
+        floodScopeKey: floodScopeKey,
       );
 
       debugPrint('✅ [ConnectionProvider] BLE send completed');
@@ -1804,6 +1847,42 @@ class ConnectionProvider with ChangeNotifier {
     );
   }
 
+  /// Clear the flood scope on the device (firmware v8+).
+  Future<void> clearFloodScope() async {
+    if (!_activeService.isConnected) return;
+    try {
+      await _activeService.clearFloodScope();
+    } catch (e) {
+      debugPrint('⚠️ [ConnectionProvider] Failed to clear flood scope: $e');
+    }
+  }
+
+  Future<void> sendChannelData({
+    required int channelIdx,
+    required int dataType,
+    required Uint8List payload,
+    Uint8List? floodScopeKey,
+  }) async {
+    if (!_activeService.isConnected) {
+      _error = 'Not connected to device';
+      notifyListeners();
+      return;
+    }
+
+    try {
+      await _activeService.sendChannelData(
+        channelIdx: channelIdx,
+        dataType: dataType,
+        payload: payload,
+        floodScopeKey: floodScopeKey,
+      );
+    } catch (e) {
+      _error = 'Failed to send channel data: $e';
+      notifyListeners();
+      rethrow;
+    }
+  }
+
   /// Request telemetry from contact
   ///
   /// COMPATIBILITY NOTE: This method sends CMD_SEND_TELEMETRY_REQ (39).
@@ -1980,6 +2059,70 @@ class ConnectionProvider with ChangeNotifier {
     }
   }
 
+  /// Ping a relay/repeater using trace path (command 36).
+  /// Returns RTT, SNR there/back, and hop count.
+  Future<RelayPingResult> pingRelay(Contact contact) async {
+    if (!_activeService.isConnected) {
+      return const RelayPingResult(
+        success: false, durationMs: 0, snrThere: 0, snrBack: 0, hopCount: 0,
+      );
+    }
+
+    final nonce = Random().nextInt(0xFFFFFFFF);
+    final completer = Completer<RelayPingResult>();
+    _pendingRelayPings[nonce] = completer;
+    _relayPingStartTimes[nonce] = DateTime.now().millisecondsSinceEpoch;
+
+    // Timeout after 10 seconds
+    final timer = Timer(const Duration(seconds: 10), () {
+      _pendingRelayPings.remove(nonce);
+      _relayPingStartTimes.remove(nonce);
+      if (!completer.isCompleted) {
+        completer.complete(const RelayPingResult(
+          success: false, durationMs: 0, snrThere: 0, snrBack: 0, hopCount: 0,
+        ));
+      }
+    });
+
+    try {
+      // Zero-hop ping: prefixSize=1 sends 1 byte of public key, hopType=0
+      await _activeService.sendTracePath(
+        nonce: nonce,
+        prefixSize: 1,
+        contactPublicKey: contact.publicKey,
+      );
+      final result = await completer.future;
+      timer.cancel();
+      return result;
+    } catch (e) {
+      timer.cancel();
+      _pendingRelayPings.remove(nonce);
+      _relayPingStartTimes.remove(nonce);
+      return const RelayPingResult(
+        success: false, durationMs: 0, snrThere: 0, snrBack: 0, hopCount: 0,
+      );
+    }
+  }
+
+  void _handleTraceDataReceived(
+    int nonce, int hopCount, double snrThere, double snrBack,
+  ) {
+    final completer = _pendingRelayPings.remove(nonce);
+    final startTime = _relayPingStartTimes.remove(nonce);
+    if (completer != null && !completer.isCompleted) {
+      final durationMs = startTime != null
+          ? DateTime.now().millisecondsSinceEpoch - startTime
+          : 0;
+      completer.complete(RelayPingResult(
+        success: true,
+        durationMs: durationMs,
+        snrThere: snrThere,
+        snrBack: snrBack,
+        hopCount: hopCount,
+      ));
+    }
+  }
+
   String _publicKeyToHex(Uint8List publicKey) {
     return publicKey.map((b) => b.toRadixString(16).padLeft(2, '0')).join('');
   }
@@ -2238,43 +2381,6 @@ class ConnectionProvider with ChangeNotifier {
     }
   }
 
-  Future<SpectrumScanResult?> scanSpectrum({
-    required int startFrequencyKhz,
-    required int stopFrequencyKhz,
-    required int bandwidthKhz,
-    required int stepKhz,
-    required int dwellMs,
-    required int thresholdDb,
-  }) async {
-    if (!_activeService.isConnected) {
-      _error = 'Not connected to device';
-      notifyListeners();
-      return null;
-    }
-
-    try {
-      _isSpectrumScanActive = true;
-      _activeService.setSpectrumScanActive(true);
-      notifyListeners();
-      return await _activeService.scanSpectrum(
-        startFrequencyKhz: startFrequencyKhz,
-        stopFrequencyKhz: stopFrequencyKhz,
-        bandwidthKhz: bandwidthKhz,
-        stepKhz: stepKhz,
-        dwellMs: dwellMs,
-        thresholdDb: thresholdDb,
-      );
-    } catch (e) {
-      _error = 'Failed to scan spectrum: $e';
-      notifyListeners();
-      return null;
-    } finally {
-      _isSpectrumScanActive = false;
-      _activeService.setSpectrumScanActive(false);
-      notifyListeners();
-    }
-  }
-
   /// Set transmit power
   Future<void> setTxPower(int powerDbm) async {
     if (!_activeService.isConnected) {
@@ -2464,7 +2570,6 @@ class ConnectionProvider with ChangeNotifier {
   }
 
   Future<void> refreshDeviceInfo() async {
-    if (_isSpectrumScanActive) return;
     if (!_activeService.isConnected) {
       _error = 'Not connected to device';
       notifyListeners();
@@ -2537,7 +2642,6 @@ class ConnectionProvider with ChangeNotifier {
   /// Sync messages from device queue
   /// Call this repeatedly until no more messages are available
   Future<bool> syncNextMessage() async {
-    if (_isSpectrumScanActive) return false;
     // Prevent re-entrancy and too-fast triggers
     if (_isSyncingMessages) {
       // Another sync (single or loop) is in progress
@@ -2576,10 +2680,6 @@ class ConnectionProvider with ChangeNotifier {
 
   /// Sync all waiting messages from device
   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(
@@ -2867,6 +2967,32 @@ class ConnectionProvider with ChangeNotifier {
     }
   }
 
+  /// Set a contact to zero-hop direct mode (no mesh forwarding).
+  ///
+  /// This forces the firmware to send directly to this contact without
+  /// using any repeaters, matching the "Send Direct" option in the
+  /// official MeshCore client.
+  Future<void> setContactDirect(Contact contact) async {
+    if (!_activeService.isConnected) {
+      _error = 'Not connected to device';
+      notifyListeners();
+      return;
+    }
+
+    try {
+      _error = null;
+      final updatedContact = contact.copyWith(
+        outPathLen: 0, // descriptor: hashSize=1, hopCount=0 → zero-hop direct
+        outPath: Uint8List(64),
+      );
+      await _activeService.addOrUpdateContact(updatedContact);
+    } catch (e) {
+      _error = 'Failed to set direct path: $e';
+      notifyListeners();
+      rethrow;
+    }
+  }
+
   /// Remove a contact from the companion radio
   ///
   /// Deletes the contact from the device's internal contact table.

lib/providers/contacts_provider.dart

@@ -275,10 +275,10 @@ class ContactsProvider with ChangeNotifier {
 
   /// Clear runtime contact state before a live device contact sync begins.
   ///
-  /// This intentionally does not touch persisted storage. It keeps any saved
-  /// contact groups for the active profile, but removes stale in-memory device
-  /// contacts and discovery state so a newly connected device starts from an
-  /// empty list while sync is in progress.
+  /// This intentionally does not touch persisted storage. It snapshots the
+  /// current in-memory contacts so sync updates can still merge against the
+  /// latest local state, but keeps the visible list intact so reconnects do
+  /// not blank the UI while the device is resyncing.
   Future<void> prepareForDeviceContactSync({Uint8List? devicePublicKey}) async {
     _setSelfDevicePublicKey(devicePublicKey);
     if (!_isInitialized) {
@@ -292,7 +292,7 @@ class ContactsProvider with ChangeNotifier {
     }
 
     debugPrint(
-      '🧹 [ContactsProvider] Clearing runtime contacts before device sync',
+      '🧹 [ContactsProvider] Preparing retained contact state for device sync',
     );
     _retainedContactsForSync
       ..clear()
@@ -301,12 +301,6 @@ class ContactsProvider with ChangeNotifier {
           (contact) => MapEntry(contact.publicKeyHex, contact),
         ),
       );
-    _contacts.clear();
-    _pendingAdverts.clear();
-    _estimatedLocations.clear();
-    _rssiObservations.clear();
-    _ensurePublicChannelExists();
-    notifyListeners();
   }
 
   /// Remove self-contact from loaded contacts (called after BLE connection established)
@@ -1143,13 +1137,34 @@ class ContactsProvider with ChangeNotifier {
       ),
     );
 
+    debugPrint(
+      '📥 [ContactsProvider] Fast GPS received '
+      'sender=${packet.senderKey6} '
+      'contact=${contact.displayName} '
+      'contactKey=${contact.publicKeyHex} '
+      'lat=${packet.latitude} '
+      'lon=${packet.longitude} '
+      'ts=${packet.timestampSeconds}',
+    );
+
     final updatedContact = contact.copyWith(
       telemetry: updatedTelemetry,
       lastAdvert: packet.timestampSeconds,
+      lastMod: packet.timestampSeconds,
       advLat: _coordinateToAdvertMicrodegrees(packet.latitude),
       advLon: _coordinateToAdvertMicrodegrees(packet.longitude),
     );
     _contacts[contact.publicKeyHex] = updatedContact;
+    _estimatedLocations[contact.publicKeyHex] = LatLng(
+      packet.latitude,
+      packet.longitude,
+    );
+    debugPrint(
+      '✅ [ContactsProvider] Fast GPS applied '
+      'contact=${updatedContact.displayName} '
+      'contactKey=${updatedContact.publicKeyHex} '
+      'lastAdvert=${updatedContact.lastAdvert}',
+    );
     _persistContacts();
     notifyListeners();
   }

lib/providers/helpers/message_retry_manager.dart

@@ -21,8 +21,8 @@ class MessageRetryManager {
   final Map<String, int> _pathFailureStreaks = {};
 
   /// Max retry attempts when the contact has a known path.
-  /// Official MeshCore app uses 5 (with auto-retry) or 3 (without).
-  static const int maxRetryAttemptsWithPath = 5;
+  /// Sequence: 2 direct attempts, flood, then last successful route.
+  static const int maxRetryAttemptsWithPath = 3;
 
   /// No retries for flood-only contacts (no known path).
   /// Value 0 means: don't retry at all, go straight to fallback/fail.

lib/providers/messages_provider.dart

@@ -23,6 +23,7 @@ typedef DisplayMessageEntry = ({Message message, int occurrenceCount});
 /// Messages Provider - manages message history and SAR markers
 class MessagesProvider with ChangeNotifier {
   static const Duration _channelEchoWarningDelay = Duration(seconds: 12);
+  static const Duration _receivedDuplicateWindow = Duration(seconds: 5);
 
   final List<Message> _messages = [];
   final Map<String, SarMarker> _sarMarkers = {};
@@ -664,6 +665,27 @@ class MessagesProvider with ChangeNotifier {
       return; // Skip duplicate
     }
 
+    final matchingSentReplayIndex = _findMatchingSentReplayIndex(finalMessage);
+    if (matchingSentReplayIndex != -1) {
+      final existingId = _messages[matchingSentReplayIndex].id;
+      _clearChannelSendWarning(existingId);
+      if (contactLocationSnapshot != null) {
+        _messageContactLocations[existingId] = contactLocationSnapshot;
+      }
+      _messageReceptionDetails[existingId] =
+          MessageReceptionDetails.mergeDuplicate(
+            existing: _messageReceptionDetails[existingId],
+            incoming: receptionDetailsSnapshot,
+          );
+      final existingMessage = _messages[matchingSentReplayIndex];
+      _messages[matchingSentReplayIndex] = existingMessage.copyWith(
+        pathLen: finalMessage.pathLen > 0 ? finalMessage.pathLen : existingMessage.pathLen,
+        pathBytes: finalMessage.pathBytes ?? existingMessage.pathBytes,
+      );
+      _persistMessages();
+      return;
+    }
+
     _messages.add(finalMessage);
     if (contactLocationSnapshot != null) {
       _messageContactLocations[finalMessage.id] = contactLocationSnapshot;
@@ -710,9 +732,25 @@ class MessagesProvider with ChangeNotifier {
       return -1;
     }
 
+    final exactDuplicateIndex = _findExactDuplicateMessageIndex(message);
+    if (exactDuplicateIndex != -1) {
+      return exactDuplicateIndex;
+    }
+
+    final lastConversationDuplicateIndex =
+        _findLastConversationDuplicateMessageIndex(message);
+    if (lastConversationDuplicateIndex != -1) {
+      return lastConversationDuplicateIndex;
+    }
+
+    return -1;
+  }
+
+  int _findExactDuplicateMessageIndex(Message message) {
     for (int index = 0; index < _messages.length; index++) {
       final existing = _messages[index];
-      if (!_matchesDuplicateScope(existing, message) ||
+      if (existing.isSentMessage ||
+          !_matchesExactDuplicateScope(existing, message) ||
           existing.text != message.text) {
         continue;
       }
@@ -729,23 +767,38 @@ class MessagesProvider with ChangeNotifier {
     return -1;
   }
 
-  bool _matchesDuplicateScope(Message existing, Message message) {
+  int _findLastConversationDuplicateMessageIndex(Message message) {
+    for (int index = _messages.length - 1; index >= 0; index--) {
+      final existing = _messages[index];
+      if (!_isSameConversation(existing, message)) {
+        continue;
+      }
+      if (existing.isSentMessage ||
+          existing.isSystemMessage ||
+          existing.text != message.text) {
+        return -1;
+      }
+      final receivedDelta = existing.receivedAt.difference(message.receivedAt).abs();
+      if (receivedDelta > _receivedDuplicateWindow) {
+        return -1;
+      }
+      return _matchesDuplicateSenderIdentity(existing, message) ? index : -1;
+    }
+
+    return -1;
+  }
+
+  bool _matchesExactDuplicateScope(Message existing, Message message) {
     if (existing.messageType != message.messageType) {
       return false;
     }
 
     if (message.isContactMessage) {
-      // Match by sender key + sender timestamp (matches official app's DB
-      // uniqueness: contactPublicKey + senderTimestamp + text + txtType).
-      if (existing.senderKeyShort == message.senderKeyShort &&
-          existing.senderTimestamp == message.senderTimestamp) {
-        return true;
+      if (!_isSameConversation(existing, message)) {
+        return false;
       }
-
-      // Fallback dedup when retransmits surface as separate inbound rows
-      // without a stable timestamp/message id, but still carry the same
-      // visible sender identity and payload.
-      return _matchesDuplicateSenderIdentity(existing, message);
+      return existing.senderTimestamp == message.senderTimestamp &&
+          _matchesDuplicateSenderIdentity(existing, message);
     }
 
     if (message.isChannelMessage) {
@@ -753,27 +806,40 @@ class MessagesProvider with ChangeNotifier {
         return false;
       }
 
-      // Primary dedup: same senderTimestamp = same message from mesh repeats.
-      // Matches official app's DB uniqueness: (channelSecret, senderTimestamp, text).
       if (existing.senderTimestamp == message.senderTimestamp) {
         return true;
       }
-
-      // Secondary: catch near-duplicate repeats within a 30s window
-      // (clock drift between nodes).
-      final withinChannelRepeatWindow =
-          (existing.senderTimestamp - message.senderTimestamp).abs() <= 30;
-      if (!withinChannelRepeatWindow) {
-        return false;
-      }
-
-      return _matchesDuplicateSenderIdentity(existing, message);
+      return false;
     }
 
     // System messages and other types: never deduplicate by scope alone.
     return false;
   }
 
+  bool _isSameConversation(Message existing, Message message) {
+    if (existing.messageType != message.messageType) {
+      return false;
+    }
+
+    if (message.isChannelMessage) {
+      return existing.channelIdx == message.channelIdx;
+    }
+
+    if (!message.isContactMessage) {
+      return false;
+    }
+
+    if (existing.recipientPublicKey != null && message.recipientPublicKey != null) {
+      return _listEquals(existing.recipientPublicKey!, message.recipientPublicKey!);
+    }
+
+    if (existing.recipientPublicKey == null && message.recipientPublicKey == null) {
+      return true;
+    }
+
+    return false;
+  }
+
   bool _matchesDuplicateSenderIdentity(Message existing, Message message) {
     final existingSenderKey = existing.senderKeyShort;
     final incomingSenderKey = message.senderKeyShort;
@@ -790,6 +856,45 @@ class MessagesProvider with ChangeNotifier {
         existingSenderName == incomingSenderName;
   }
 
+  int _findMatchingSentReplayIndex(Message message) {
+    if (!message.isChannelMessage || message.isSentMessage) {
+      return -1;
+    }
+
+    for (int index = 0; index < _messages.length; index++) {
+      final existing = _messages[index];
+      if (!existing.isSentMessage ||
+          !existing.isChannelMessage ||
+          existing.text != message.text) {
+        continue;
+      }
+
+      if (_matchesSentReplayScope(existing, message)) {
+        return index;
+      }
+    }
+
+    return -1;
+  }
+
+  bool _matchesSentReplayScope(Message existing, Message message) {
+    if (!_isSameConversation(existing, message)) {
+      return false;
+    }
+
+    if (existing.senderTimestamp == message.senderTimestamp) {
+      return true;
+    }
+
+    final withinChannelRepeatWindow =
+        (existing.senderTimestamp - message.senderTimestamp).abs() <= 30;
+    if (!withinChannelRepeatWindow) {
+      return false;
+    }
+
+    return _matchesDuplicateSenderIdentity(existing, message);
+  }
+
   /// Add multiple messages
   void addMessages(List<Message> messages) {
     int addedCount = 0;
@@ -1187,9 +1292,7 @@ class MessagesProvider with ChangeNotifier {
     for (final message in messages) {
       final occurrenceCount = _messageOccurrenceCount(message);
       final existingIndex = entries.indexWhere(
-        (entry) =>
-            entry.message.text == message.text &&
-            _matchesDuplicateScope(entry.message, message),
+        (entry) => _shouldCollapseDisplayMessage(entry.message, message),
       );
 
       if (existingIndex == -1) {
@@ -1207,6 +1310,17 @@ class MessagesProvider with ChangeNotifier {
     return entries;
   }
 
+  bool _shouldCollapseDisplayMessage(Message existing, Message message) {
+    if (existing.isSentMessage || message.isSentMessage) {
+      return false;
+    }
+
+    return existing.text == message.text &&
+        (_matchesExactDuplicateScope(existing, message) ||
+            (_isSameConversation(existing, message) &&
+                _matchesDuplicateSenderIdentity(existing, message)));
+  }
+
   int _messageOccurrenceCount(Message message) =>
       _messageReceptionDetails[message.id]?.receivedCopies ?? 1;
 
@@ -2354,17 +2468,6 @@ class MessagesProvider with ChangeNotifier {
           return;
         }
 
-        // On the last attempt, reset the path to force flood mode
-        // (matches official MeshCore app behaviour)
-        if (_retryManager.isLastAttempt(currentMessage, contact)) {
-          debugPrint(
-            '🔄 [MessagesProvider] Last attempt — resetting path to flood for $messageId',
-          );
-          if (resetPathBeforeLastRetryCallback != null) {
-            await resetPathBeforeLastRetryCallback!(contact);
-          }
-        }
-
         if (sendMessageCallback != null) {
           final queued = await sendMessageCallback!(
             contactPublicKey: contact.publicKey,

lib/providers/sensors_provider.dart

@@ -14,7 +14,7 @@ enum SensorRefreshState { idle, refreshing, success, timeout, unavailable }
 
 class SensorsProvider with ChangeNotifier {
   static const Duration _successStateRetention = Duration(minutes: 1);
-  static const int selfAutoRefreshMinutes = 1;
+  static const Duration selfAutoRefreshInterval = Duration(seconds: 30);
   static const String _watchedSensorsKey = 'watched_sensor_keys';
   static const String _visibleSensorMetricsKey = 'visible_sensor_metrics';
   static const String _fieldSpanKey = 'sensor_field_spans';
@@ -374,18 +374,18 @@ class SensorsProvider with ChangeNotifier {
     return List<String>.unmodifiable(dueKeys);
   }
 
-  bool _isRefreshDue(
+  bool _isRefreshDueForInterval(
     String publicKeyHex, {
-    required int minutes,
+    required Duration interval,
     required DateTime refreshTime,
   }) {
-    if (minutes <= 0) {
+    if (interval <= Duration.zero) {
       return false;
     }
 
     final lastRefreshAt = _lastRefreshAttemptAt[publicKeyHex];
     return lastRefreshAt == null ||
-        refreshTime.difference(lastRefreshAt) >= Duration(minutes: minutes);
+        refreshTime.difference(lastRefreshAt) >= interval;
   }
 
   Future<void> toggleMetric(
@@ -769,9 +769,9 @@ class SensorsProvider with ChangeNotifier {
     final self = selfContact(contactsProvider, connectionProvider);
     if (self != null &&
         !dueKeys.contains(self.publicKeyHex) &&
-        _isRefreshDue(
+        _isRefreshDueForInterval(
           self.publicKeyHex,
-          minutes: selfAutoRefreshMinutes,
+          interval: selfAutoRefreshInterval,
           refreshTime: refreshTime,
         )) {
       dueKeys.insert(0, self.publicKeyHex);

lib/screens/contacts_tab.dart

@@ -19,6 +19,8 @@ import '../utils/avatar_label_helper.dart';
 import '../widgets/common/contact_avatar.dart';
 import '../widgets/contacts/contact_tile.dart';
 import '../widgets/contacts/add_channel_dialog.dart';
+import '../services/region_scope_preferences.dart';
+import '../utils/toast_logger.dart';
 import 'add_contact_screen.dart';
 
 class ContactsTab extends StatefulWidget {
@@ -546,6 +548,15 @@ class _ContactsTabState extends State<ContactsTab> {
             await _exportHashChannelPskBase64(context, channel);
           },
         ),
+      _ChannelSheetAction(
+        icon: Icons.language_rounded,
+        label: l10n.setRegionScope,
+        onTap: () async {
+          Navigator.pop(context);
+          if (!context.mounted) return;
+          _showRegionScopeForChannel(context, channel);
+        },
+      ),
       if (!channel.isPublicChannel)
         _ChannelSheetAction(
           icon: Icons.delete_outline_rounded,
@@ -575,6 +586,38 @@ class _ContactsTabState extends State<ContactsTab> {
     );
   }
 
+  void _showRegionScopeForChannel(BuildContext context, Contact channel) async {
+    final channelIdx = channel.publicKey.length > 1 ? channel.publicKey[1] : 0;
+    final l10n = AppLocalizations.of(context)!;
+    final currentScope = await RegionScopePreferences.getScope(channelIdx);
+    if (!context.mounted) return;
+
+    showModalBottomSheet(
+      context: context,
+      showDragHandle: true,
+      isScrollControlled: true,
+      builder: (sheetContext) {
+        return _ContactsRegionScopeSheet(
+          currentScopeName: currentScope?.name,
+          l10n: l10n,
+          onScopeSelected: (String? name) async {
+            Navigator.of(sheetContext).pop();
+            if (name == null) {
+              await RegionScopePreferences.clearScope(channelIdx);
+              if (!context.mounted) return;
+              ToastLogger.success(context, l10n.regionScopeCleared);
+            } else {
+              final key = RegionScopePreferences.deriveRegionKey(name);
+              await RegionScopePreferences.setScope(channelIdx, name, key);
+              if (!context.mounted) return;
+              ToastLogger.success(context, l10n.regionScopeSet(name));
+            }
+          },
+        );
+      },
+    );
+  }
+
   Color _sectionAccentColor(BuildContext context, ContactSection section) {
     final colorScheme = Theme.of(context).colorScheme;
     switch (section) {
@@ -2394,3 +2437,165 @@ class _MetricChip extends StatelessWidget {
     );
   }
 }
+
+class _ContactsRegionScopeSheet extends StatefulWidget {
+  final String? currentScopeName;
+  final AppLocalizations l10n;
+  final ValueChanged<String?> onScopeSelected;
+
+  const _ContactsRegionScopeSheet({
+    required this.currentScopeName,
+    required this.l10n,
+    required this.onScopeSelected,
+  });
+
+  @override
+  State<_ContactsRegionScopeSheet> createState() =>
+      _ContactsRegionScopeSheetState();
+}
+
+class _ContactsRegionScopeSheetState
+    extends State<_ContactsRegionScopeSheet> {
+  final TextEditingController _nameController = TextEditingController();
+
+  @override
+  void dispose() {
+    _nameController.dispose();
+    super.dispose();
+  }
+
+  void _submitManualName() {
+    var name = _nameController.text.trim();
+    if (name.isEmpty) return;
+    if (!name.startsWith('#')) name = '#$name';
+    widget.onScopeSelected(name);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+    final l10n = widget.l10n;
+
+    return SafeArea(
+      child: ConstrainedBox(
+        constraints: BoxConstraints(
+          maxHeight: MediaQuery.of(context).size.height * 0.72,
+        ),
+        child: SingleChildScrollView(
+          padding: const EdgeInsets.fromLTRB(20, 8, 20, 20),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Text(
+                l10n.regionScope,
+                style: theme.textTheme.titleLarge?.copyWith(
+                  fontWeight: FontWeight.w700,
+                ),
+              ),
+              const SizedBox(height: 4),
+              Text(
+                l10n.regionScopeWarning,
+                style: theme.textTheme.bodySmall?.copyWith(
+                  color: colorScheme.onSurfaceVariant,
+                ),
+              ),
+              const SizedBox(height: 16),
+
+              _ScopeOption(
+                label: l10n.regionScopeNone,
+                isSelected: widget.currentScopeName == null,
+                onTap: () => widget.onScopeSelected(null),
+              ),
+              const SizedBox(height: 8),
+
+              Row(
+                children: [
+                  Expanded(
+                    child: TextField(
+                      controller: _nameController,
+                      decoration: InputDecoration(
+                        hintText: l10n.enterRegionName,
+                        isDense: true,
+                        prefixText: '#',
+                        border: OutlineInputBorder(
+                          borderRadius: BorderRadius.circular(12),
+                        ),
+                        contentPadding: const EdgeInsets.symmetric(
+                          horizontal: 12,
+                          vertical: 10,
+                        ),
+                      ),
+                      onSubmitted: (_) => _submitManualName(),
+                    ),
+                  ),
+                  const SizedBox(width: 8),
+                  FilledButton.tonal(
+                    onPressed: _submitManualName,
+                    child: const Icon(Icons.check_rounded, size: 20),
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _ScopeOption extends StatelessWidget {
+  final String label;
+  final bool isSelected;
+  final VoidCallback onTap;
+
+  const _ScopeOption({
+    required this.label,
+    required this.isSelected,
+    required this.onTap,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+    return Material(
+      color: isSelected
+          ? colorScheme.primaryContainer
+          : colorScheme.surfaceContainerLow,
+      borderRadius: BorderRadius.circular(12),
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(12),
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+          child: Row(
+            children: [
+              Icon(
+                isSelected
+                    ? Icons.radio_button_checked_rounded
+                    : Icons.radio_button_off_rounded,
+                size: 20,
+                color: isSelected
+                    ? colorScheme.primary
+                    : colorScheme.onSurfaceVariant,
+              ),
+              const SizedBox(width: 12),
+              Expanded(
+                child: Text(
+                  label,
+                  style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+                    fontWeight: isSelected ? FontWeight.w600 : FontWeight.w400,
+                    color: isSelected
+                        ? colorScheme.onPrimaryContainer
+                        : colorScheme.onSurface,
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/screens/discovery_screen.dart

@@ -12,7 +12,9 @@ import '../widgets/compact_signal_indicator.dart' show SignalMetric;
 enum _DiscoveryListFilter { all, repeaters, sensors, others }
 
 class DiscoveryScreen extends StatefulWidget {
-  const DiscoveryScreen({super.key});
+  final bool autoDiscoverRepeatersOnOpen;
+
+  const DiscoveryScreen({super.key, this.autoDiscoverRepeatersOnOpen = false});
 
   @override
   State<DiscoveryScreen> createState() => _DiscoveryScreenState();
@@ -25,6 +27,7 @@ class _DiscoveryScreenState extends State<DiscoveryScreen> {
   final Set<int> _runningDiscoveryTypes = <int>{};
   final TextEditingController _searchController = TextEditingController();
   bool _isResolvingAll = false;
+  bool _hasQueuedAutoRepeaterDiscovery = false;
   String _searchQuery = '';
   _DiscoveryListFilter _selectedFilter = _DiscoveryListFilter.all;
   late final Future<List<MeshMapNode>> _cachedNodesFuture;
@@ -35,6 +38,13 @@ class _DiscoveryScreenState extends State<DiscoveryScreen> {
     _cachedNodesFuture = MeshMapNodesService.loadCachedNodes(
       cacheTtl: MeshMapNodesService.traceCacheTtl,
     );
+
+    if (widget.autoDiscoverRepeatersOnOpen) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        if (!mounted) return;
+        _autoDiscoverRepeaters();
+      });
+    }
   }
 
   @override
@@ -96,9 +106,10 @@ class _DiscoveryScreenState extends State<DiscoveryScreen> {
         advertType: advertType,
       );
       if (!mounted) return;
+      final l10n = AppLocalizations.of(context)!;
       final label = switch (advertType) {
-        _repeaterAdvertType => 'Repeater discovery sent',
-        _sensorAdvertType => 'Sensor discovery sent',
+        _repeaterAdvertType => l10n.repeaterDiscoverySent,
+        _sensorAdvertType => l10n.sensorDiscoverySent,
         _ => 'Discovery sent',
       };
       ScaffoldMessenger.of(
@@ -113,6 +124,14 @@ class _DiscoveryScreenState extends State<DiscoveryScreen> {
     }
   }
 
+  Future<void> _autoDiscoverRepeaters() async {
+    if (_hasQueuedAutoRepeaterDiscovery) {
+      return;
+    }
+    _hasQueuedAutoRepeaterDiscovery = true;
+    await _discoverNodeType(_repeaterAdvertType);
+  }
+
   Future<void> _resolveAdvert(PendingAdvert advert) async {
     final keyHex = advert.publicKeyHex;
     if (_resolvingAdvertKeys.contains(keyHex)) return;

lib/screens/home_screen.dart

@@ -23,13 +23,11 @@ import 'device_config_screen.dart';
 import 'packet_log_screen.dart';
 import 'live_traffic_screen.dart';
 import 'profiles_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';
 import '../services/profile_device_key_resolver.dart';
 import '../services/profile_manager.dart';
@@ -68,7 +66,6 @@ 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;
@@ -107,7 +104,6 @@ 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
@@ -291,14 +287,6 @@ class _HomeScreenState extends State<HomeScreen>
     }
   }
 
-  Future<void> _loadDeveloperModePreference() async {
-    final isEnabled = await DeveloperModeService.isEnabled();
-    if (!mounted) return;
-    setState(() {
-      _isDeveloperModeEnabled = isEnabled;
-    });
-  }
-
   void _showPermissionDialog() {
     if (!mounted) return;
 
@@ -749,12 +737,10 @@ class _HomeScreenState extends State<HomeScreen>
     }
   }
 
-  void _showConnectionDialog(BuildContext context) {
-    showModalBottomSheet(
-      context: context,
-      isScrollControlled: true,
+  Future<void> _showConnectionDialog(BuildContext context) async {
+    await showConnectionDialogFlow(
+      context,
       backgroundColor: Colors.transparent,
-      builder: (context) => const ConnectionDialog(),
     );
   }
 
@@ -811,32 +797,6 @@ class _HomeScreenState extends State<HomeScreen>
                         .read<ProfileManager>()
                         .profilesEnabled;
 
-                    if (_isDeveloperModeEnabled) {
-                      items.add(
-                        PopupMenuItem(
-                          child: Row(
-                            children: [
-                              const Icon(Icons.radar),
-                              SizedBox(width: 8),
-                              Text(AppLocalizations.of(context)!.spectrumScan),
-                            ],
-                          ),
-                          onTap: () {
-                            final navigator = Navigator.of(context);
-                            Future.delayed(Duration.zero, () {
-                              if (!mounted) return;
-                              navigator.push(
-                                MaterialPageRoute(
-                                  builder: (context) =>
-                                      const SpectrumScanScreen(),
-                                ),
-                              );
-                            });
-                          },
-                        ),
-                      );
-                    }
-
                     items.add(
                       PopupMenuItem(
                         child: Row(
@@ -954,7 +914,6 @@ class _HomeScreenState extends State<HomeScreen>
                               ),
                             );
                             _loadRxTxPreference();
-                            _loadDeveloperModePreference();
                           });
                         },
                       ),

lib/screens/live_traffic_screen.dart

@@ -6,6 +6,7 @@ import 'package:provider/provider.dart';
 
 import '../models/ble_packet_log.dart';
 import '../models/contact.dart';
+import '../providers/channels_provider.dart';
 import '../providers/contacts_provider.dart';
 import '../providers/connection_provider.dart';
 import '../services/live_traffic_summary.dart';
@@ -155,6 +156,11 @@ class _LiveTrafficScreenState extends State<LiveTrafficScreen> {
               tooltip: 'Open packet logs',
               icon: const Icon(Icons.list_alt_rounded),
             ),
+          IconButton(
+            onPressed: () => _showPacketTypeHelpSheet(context),
+            tooltip: 'Packet type help',
+            icon: const Icon(Icons.help_outline),
+          ),
           IconButton(
             onPressed: () {
               setState(() {
@@ -278,6 +284,68 @@ class _LiveTrafficScreenState extends State<LiveTrafficScreen> {
       _selectedWindow = selected;
     });
   }
+
+  Future<void> _showPacketTypeHelpSheet(BuildContext context) {
+    final packetTypes = LiveTrafficEntry.knownPayloadTypes;
+    return showModalBottomSheet<void>(
+      context: context,
+      showDragHandle: true,
+      isScrollControlled: true,
+      builder: (context) {
+        final scheme = Theme.of(context).colorScheme;
+        return SafeArea(
+          child: Padding(
+            padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
+            child: ListView(
+              shrinkWrap: true,
+              children: [
+                Text(
+                  'Packet Types',
+                  style: Theme.of(context).textTheme.titleMedium,
+                ),
+                const SizedBox(height: 6),
+                Text(
+                  'Descriptions below follow the current MeshCore payload definitions.',
+                  style: TextStyle(color: scheme.onSurfaceVariant),
+                ),
+                const SizedBox(height: 16),
+                for (final packetType in packetTypes) ...[
+                  Container(
+                    padding: const EdgeInsets.all(12),
+                    decoration: BoxDecoration(
+                      color: scheme.surfaceContainerHigh,
+                      borderRadius: BorderRadius.circular(14),
+                    ),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(
+                          packetType.title,
+                          style: const TextStyle(
+                            fontSize: 14,
+                            fontWeight: FontWeight.w800,
+                          ),
+                        ),
+                        const SizedBox(height: 4),
+                        Text(
+                          packetType.description,
+                          style: TextStyle(
+                            fontSize: 13,
+                            color: scheme.onSurfaceVariant,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(height: 10),
+                ],
+              ],
+            ),
+          ),
+        );
+      },
+    );
+  }
 }
 
 class _SummaryPanel extends StatelessWidget {
@@ -676,7 +744,11 @@ class _LiveTrafficCard extends StatelessWidget {
     final accent = isRx ? Colors.green : Colors.blue;
     final rxInfo = log.logRxDataInfo;
     final originDistance = _originDistanceLabel(context, entry);
-    final packetDetails = _LiveTrafficPacketDetails.fromEntry(entry);
+    final channelsProvider = _maybeProvider<ChannelsProvider>(context);
+    final packetDetails = _LiveTrafficPacketDetails.fromEntry(
+      entry,
+      channelsProvider: channelsProvider,
+    );
     final signalMetric = SignalMetric.fromRxInfo(rxInfo);
 
     return Material(
@@ -730,7 +802,7 @@ class _LiveTrafficCard extends StatelessWidget {
                         if (entry.payloadMeaning != null)
                           Text(
                             entry.payloadMeaning!,
-                            maxLines: 1,
+                            maxLines: 2,
                             overflow: TextOverflow.ellipsis,
                             style: TextStyle(
                               fontSize: 11,
@@ -989,27 +1061,22 @@ class _LiveTrafficPacketDetails {
     required this.endpointLine,
   });
 
-  factory _LiveTrafficPacketDetails.fromEntry(LiveTrafficEntry entry) {
+  factory _LiveTrafficPacketDetails.fromEntry(
+    LiveTrafficEntry entry, {
+    ChannelsProvider? channelsProvider,
+  }) {
     final route = entry.route;
     final payloadType = route?.payloadType;
     final parsedPayload = _ParsedTrafficPayload.tryParse(
       entry.log.rawData,
       route,
+      channelsProvider: channelsProvider,
     );
     final title = switch (payloadType) {
-      0x00 => 'FLOOD REQUEST',
-      0x01 => 'FLOOD RESPONSE',
-      0x02 => 'FLOOD TEXT',
-      0x03 => 'FLOOD ACK',
-      0x04 => 'FLOOD ADVERTISEMENT',
-      0x05 => 'FLOOD GROUP_TEXT',
-      0x06 => 'FLOOD GROUP_DATA',
-      0x07 => 'FLOOD ANON_REQUEST',
-      0x08 => 'FLOOD RETURNED_PATH',
-      0x09 => 'FLOOD TRACE_PATH',
-      0x0A => 'FLOOD MULTIPART',
-      0x0B => 'FLOOD CONTROL',
-      _ => entry.payloadLabel.toUpperCase(),
+      0x05 => parsedPayload?.channelDisplayName ?? LiveTrafficEntry.payloadTypeTitle(0x05),
+      0x06 => parsedPayload?.channelDisplayName ?? LiveTrafficEntry.payloadTypeTitle(0x06),
+      null => entry.payloadLabel.toUpperCase(),
+      _ => LiveTrafficEntry.payloadTypeTitle(payloadType),
     };
 
     final hopHashes = route?.hopHashes ?? const <String>[];
@@ -1041,13 +1108,15 @@ class _LiveTrafficPacketDetails {
 
 class _ParsedTrafficPayload {
   final String? endpointLine;
+  final String? channelDisplayName;
 
-  const _ParsedTrafficPayload({this.endpointLine});
+  const _ParsedTrafficPayload({this.endpointLine, this.channelDisplayName});
 
   static _ParsedTrafficPayload? tryParse(
     List<int> rawData,
-    DecodedLogRxRoute? route,
-  ) {
+    DecodedLogRxRoute? route, {
+    ChannelsProvider? channelsProvider,
+  }) {
     if (rawData.length < 5 ||
         rawData.first != LiveTrafficSummary.logRxDataResponseCode) {
       return null;
@@ -1084,9 +1153,18 @@ class _ParsedTrafficPayload {
       case 0x05:
       case 0x06:
         if (payload.isEmpty) return const _ParsedTrafficPayload();
+        final channelHash = payload.first;
+        final channelHashHex = channelHash
+            .toRadixString(16)
+            .padLeft(2, '0')
+            .toUpperCase();
+        final channelDisplayName = channelsProvider
+            ?.getUniqueChannelDisplayNameByHashByte(channelHash);
         return _ParsedTrafficPayload(
-          endpointLine:
-              'Channel Hash: ${payload.first.toRadixString(16).padLeft(2, '0').toUpperCase()}',
+          channelDisplayName: channelDisplayName,
+          endpointLine: channelDisplayName == null
+              ? 'Channel Hash: $channelHashHex'
+              : 'Channel: $channelDisplayName ($channelHashHex)',
         );
       case 0x00:
       case 0x01:

lib/screens/map_tab.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 import 'dart:math' as math;
 import 'dart:typed_data';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart' show MissingPluginException;
 import 'package:flutter_map/flutter_map.dart' as flutter_map;
 import 'package:flutter_map/flutter_map.dart';
 import 'package:latlong2/latlong.dart';
@@ -10,6 +11,7 @@ import 'package:provider/provider.dart';
 import 'package:geolocator/geolocator.dart';
 import 'package:flutter_compass/flutter_compass.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import '../services/compass_support.dart';
 import '../utils/slovenian_crs.dart';
 import '../providers/contacts_provider.dart';
 import '../providers/messages_provider.dart';
@@ -200,46 +202,64 @@ class _MapTabState extends State<MapTab> with AutomaticKeepAliveClientMixin {
   }
 
   void _startCompassTracking() {
+    if (!CompassSupport.isAvailable) {
+      return;
+    }
+
     final compassStream = FlutterCompass.events;
     if (compassStream == null) {
       return;
     }
 
     // Start listening to compass events
-    _compassStreamSubscription = compassStream.listen((CompassEvent event) {
-      // Check if widget is disposing, mounted, and event has valid heading
-      if (_isDisposing || !mounted || event.heading == null) return;
+    _compassStreamSubscription = compassStream.listen(
+      (CompassEvent event) {
+        // Check if widget is disposing, mounted, and event has valid heading
+        if (_isDisposing || !mounted || event.heading == null) return;
 
-      try {
-        setState(() {
-          _compassHeading = event.heading;
-        });
+        try {
+          setState(() {
+            _compassHeading = event.heading;
+          });
 
-        // Rotate map if rotation mode is enabled and we have compass heading
-        // Only rotate if map is ready
-        if (_rotateMarkerWithHeading &&
-            event.heading != null &&
-            _isMapReady &&
-            !_isDisposing) {
-          try {
-            // Use moveAndRotate to set absolute rotation
-            final camera = _mapController.camera;
-            _mapController.moveAndRotate(
-              camera.center,
-              camera.zoom,
-              -event.heading!,
-            );
-          } catch (e) {
-            // Map not ready yet, ignore
+          // Rotate map if rotation mode is enabled and we have compass heading
+          // Only rotate if map is ready
+          if (_rotateMarkerWithHeading &&
+              event.heading != null &&
+              _isMapReady &&
+              !_isDisposing) {
+            try {
+              // Use moveAndRotate to set absolute rotation
+              final camera = _mapController.camera;
+              _mapController.moveAndRotate(
+                camera.center,
+                camera.zoom,
+                -event.heading!,
+              );
+            } catch (e) {
+              // Map not ready yet, ignore
+            }
+          }
+        } catch (e) {
+          // Widget disposed during setState, ignore
+          if (!_isDisposing) {
+            debugPrint('Compass tracking error: $e');
           }
         }
-      } catch (e) {
-        // Widget disposed during setState, ignore
-        if (!_isDisposing) {
-          debugPrint('Compass tracking error: $e');
+      },
+      onError: (Object error, StackTrace stackTrace) {
+        if (_isDisposing) {
+          return;
         }
-      }
-    });
+
+        if (error is MissingPluginException) {
+          debugPrint('Compass plugin is unavailable on this platform');
+          return;
+        }
+
+        debugPrint('Compass tracking stream error: $error');
+      },
+    );
   }
 
   Future<void> _loadSettings() async {
@@ -1004,7 +1024,7 @@ class _MapTabState extends State<MapTab> with AutomaticKeepAliveClientMixin {
         ),
         child: DetailedCompassDialog(
           initialPosition: _locationService.currentPosition,
-          initialHeading: _currentHeading,
+          initialHeading: _compassHeading,
           contacts: contacts,
           sarMarkers: sarMarkers,
         ),
@@ -1030,7 +1050,7 @@ class _MapTabState extends State<MapTab> with AutomaticKeepAliveClientMixin {
         ),
         child: DetailedCompassDialog(
           initialPosition: _locationService.currentPosition,
-          initialHeading: _currentHeading,
+          initialHeading: _compassHeading,
           contacts: contacts,
           sarMarkers: sarMarkers,
           preSelectedContact: selectedContact,

lib/screens/sensors_tab.dart

@@ -6,6 +6,7 @@ import 'package:provider/provider.dart';
 import '../models/contact.dart';
 import '../providers/connection_provider.dart';
 import '../providers/contacts_provider.dart';
+import '../providers/map_provider.dart';
 import '../providers/sensors_provider.dart';
 import '../widgets/sensors/bthome_met_history_sheet.dart';
 import '../widgets/sensors/sensor_telemetry_card.dart';
@@ -21,7 +22,10 @@ class SensorsTab extends StatefulWidget {
 }
 
 class _SensorsTabState extends State<SensorsTab> {
+  static const Duration _autoRefreshTickInterval = Duration(seconds: 30);
   Timer? _minuteTicker;
+  final Map<String, DateTime> _lastCenteredTelemetryAtBySensor =
+      <String, DateTime>{};
 
   @override
   void initState() {
@@ -61,22 +65,8 @@ class _SensorsTabState extends State<SensorsTab> {
       return;
     }
 
-    final now = DateTime.now();
-    final nextMinute = DateTime(
-      now.year,
-      now.month,
-      now.day,
-      now.hour,
-      now.minute + 1,
-    );
-    final delay = nextMinute.difference(now);
-
-    _minuteTicker = Timer(delay, () {
-      if (!mounted) return;
+    _minuteTicker = Timer.periodic(_autoRefreshTickInterval, (_) {
       unawaited(_handleMinuteTick());
-      _minuteTicker = Timer.periodic(const Duration(minutes: 1), (_) {
-        unawaited(_handleMinuteTick());
-      });
     });
   }
 
@@ -105,120 +95,23 @@ class _SensorsTabState extends State<SensorsTab> {
       contactsProvider,
       connectionProvider: context.read<ConnectionProvider>(),
     );
-    final searchController = TextEditingController();
-
-    try {
-      await showModalBottomSheet<void>(
-        context: context,
-        showDragHandle: true,
-        isScrollControlled: true,
-        builder: (sheetContext) {
-          if (candidates.isEmpty) {
-            return const SafeArea(
-              child: Padding(
-                padding: EdgeInsets.all(24),
-                child: Text(
-                  'No eligible nodes available. Discover a relay or node first.',
-                ),
-              ),
-            );
-          }
-
-          return StatefulBuilder(
-            builder: (context, setModalState) {
-              final query = searchController.text.trim().toLowerCase();
-              final filteredCandidates = candidates.where((contact) {
-                if (query.isEmpty) {
-                  return true;
-                }
-                return contact.displayName.toLowerCase().contains(query) ||
-                    contact.publicKeyHex.toLowerCase().contains(query);
-              }).toList();
-
-              return SafeArea(
-                child: Padding(
-                  padding: EdgeInsets.only(
-                    bottom: MediaQuery.of(context).viewInsets.bottom,
-                  ),
-                  child: ListView(
-                    shrinkWrap: true,
-                    padding: const EdgeInsets.only(bottom: 20),
-                    children: [
-                      ListTile(
-                        title: const Text(
-                          'Add sensor node',
-                          style: TextStyle(fontWeight: FontWeight.bold),
-                        ),
-                        subtitle: Text(
-                          AppLocalizations.of(
-                            context,
-                          )!.pickARelayOrNodeToWatchInSensors,
-                        ),
-                      ),
-                      Padding(
-                        padding: const EdgeInsets.fromLTRB(20, 0, 20, 12),
-                        child: TextField(
-                          controller: searchController,
-                          onChanged: (_) => setModalState(() {}),
-                          decoration: const InputDecoration(
-                            prefixIcon: Icon(Icons.search),
-                            hintText: 'Search sensors',
-                            border: OutlineInputBorder(),
-                          ),
-                        ),
-                      ),
-                      if (filteredCandidates.isEmpty)
-                        const Padding(
-                          padding: EdgeInsets.symmetric(
-                            horizontal: 20,
-                            vertical: 16,
-                          ),
-                          child: Text(
-                            'No sensor candidates match your search.',
-                          ),
-                        ),
-                      ...filteredCandidates.map(
-                        (contact) => ListTile(
-                          contentPadding: const EdgeInsets.symmetric(
-                            horizontal: 20,
-                            vertical: 4,
-                          ),
-                          leading: CircleAvatar(
-                            radius: 24,
-                            backgroundColor: const Color(0xFFDDEAF8),
-                            child: Icon(
-                              _typeIcon(contact),
-                              color: const Color(0xFF1E4F7A),
-                            ),
-                          ),
-                          title: Text(contact.displayName),
-                          subtitle: _SensorCandidatePreview(contact: contact),
-                          isThreeLine: true,
-                          onTap: () async {
-                            await sensorsProvider.addSensor(contact);
-                            if (!sheetContext.mounted) return;
-                            Navigator.of(sheetContext).pop();
-                            ScaffoldMessenger.of(context).showSnackBar(
-                              SnackBar(
-                                content: Text(
-                                  '${contact.displayName} added to Sensors',
-                                ),
-                              ),
-                            );
-                          },
-                        ),
-                      ),
-                    ],
-                  ),
-                ),
-              );
-            },
+    await showModalBottomSheet<void>(
+      context: context,
+      showDragHandle: true,
+      isScrollControlled: true,
+      builder: (sheetContext) => AddSensorSheet(
+        candidates: candidates,
+        onClose: () => Navigator.of(sheetContext).pop(),
+        onSelect: (contact) async {
+          await sensorsProvider.addSensor(contact);
+          if (!sheetContext.mounted) return;
+          Navigator.of(sheetContext).pop();
+          ScaffoldMessenger.of(context).showSnackBar(
+            SnackBar(content: Text('${contact.displayName} added to Sensors')),
           );
         },
-      );
-    } finally {
-      searchController.dispose();
-    }
+      ),
+    );
   }
 
   Future<void> _showMetricSelector(
@@ -228,7 +121,7 @@ class _SensorsTabState extends State<SensorsTab> {
   ) async {
     await Navigator.of(context).push(
       MaterialPageRoute<void>(
-        builder: (pageContext) => _SensorCustomizeView(
+        builder: (pageContext) => SensorCustomizeView(
           publicKeyHex: publicKeyHex,
           initialContact: contact,
           onRenameMetric:
@@ -322,6 +215,65 @@ class _SensorsTabState extends State<SensorsTab> {
     );
   }
 
+  void _maybeCenterMapOnTelemetryUpdate(
+    Iterable<String> sensorKeys, {
+    required SensorsProvider sensorsProvider,
+    required ContactsProvider contactsProvider,
+    required ConnectionProvider connectionProvider,
+  }) {
+    if (!widget.isActive) {
+      return;
+    }
+
+    Contact? latestContact;
+    DateTime? latestTimestamp;
+
+    for (final key in sensorKeys) {
+      final contact = sensorsProvider.contactForDisplay(
+        key,
+        contactsProvider: contactsProvider,
+        connectionProvider: connectionProvider,
+      );
+      final timestamp = contact?.telemetry?.timestamp;
+      final location = contact?.displayLocation;
+      if (contact == null || timestamp == null || location == null) {
+        continue;
+      }
+
+      final previousTimestamp = _lastCenteredTelemetryAtBySensor[key];
+      if (previousTimestamp != null && !timestamp.isAfter(previousTimestamp)) {
+        continue;
+      }
+
+      if (latestTimestamp == null || timestamp.isAfter(latestTimestamp)) {
+        latestContact = contact;
+        latestTimestamp = timestamp;
+      }
+    }
+
+    if (latestContact == null || latestTimestamp == null) {
+      return;
+    }
+
+    _lastCenteredTelemetryAtBySensor[latestContact.publicKeyHex] =
+        latestTimestamp;
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted || !widget.isActive) {
+        return;
+      }
+
+      final location = latestContact!.displayLocation;
+      if (location == null) {
+        return;
+      }
+
+      context.read<MapProvider>().navigateToLocation(
+        location: location,
+        zoom: 15.0,
+      );
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -344,6 +296,16 @@ class _SensorsTabState extends State<SensorsTab> {
                 contactsProvider: contactsProvider,
                 connectionProvider: connectionProvider,
               );
+              final displayKeys = <String>[
+                ...?selfDisplayKey == null ? null : <String>[selfDisplayKey],
+                ...watchedKeys,
+              ];
+              _maybeCenterMapOnTelemetryUpdate(
+                displayKeys,
+                sensorsProvider: sensorsProvider,
+                contactsProvider: contactsProvider,
+                connectionProvider: connectionProvider,
+              );
               final hasAnyCards =
                   selfDisplayKey != null || watchedKeys.isNotEmpty;
 
@@ -474,9 +436,153 @@ class _SensorsTabState extends State<SensorsTab> {
   }
 }
 
-class _SensorCustomizeView extends StatelessWidget {
+class AddSensorSheet extends StatefulWidget {
+  final List<Contact> candidates;
+  final Future<void> Function(Contact contact) onSelect;
+  final VoidCallback onClose;
+
+  const AddSensorSheet({
+    super.key,
+    required this.candidates,
+    required this.onSelect,
+    required this.onClose,
+  });
+
+  @override
+  State<AddSensorSheet> createState() => _AddSensorSheetState();
+}
+
+class _AddSensorSheetState extends State<AddSensorSheet> {
+  final TextEditingController _searchController = TextEditingController();
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (widget.candidates.isEmpty) {
+      return const SafeArea(
+        child: Padding(
+          padding: EdgeInsets.all(24),
+          child: Text(
+            'No eligible nodes available. Discover a relay or node first.',
+          ),
+        ),
+      );
+    }
+
+    final l10n = AppLocalizations.of(context)!;
+    final query = _searchController.text.trim().toLowerCase();
+    final filteredCandidates = widget.candidates.where((contact) {
+      if (query.isEmpty) {
+        return true;
+      }
+      return contact.displayName.toLowerCase().contains(query) ||
+          contact.publicKeyHex.toLowerCase().contains(query);
+    }).toList();
+
+    return SafeArea(
+      child: Padding(
+        padding: EdgeInsets.only(
+          bottom: MediaQuery.of(context).viewInsets.bottom,
+        ),
+        child: SizedBox(
+          height: MediaQuery.of(context).size.height * 0.8,
+          child: Column(
+            children: [
+              Padding(
+                padding: const EdgeInsets.fromLTRB(20, 8, 12, 8),
+                child: Row(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          const Text(
+                            'Add sensor node',
+                            style: TextStyle(fontWeight: FontWeight.bold),
+                          ),
+                          const SizedBox(height: 4),
+                          Text(l10n.pickARelayOrNodeToWatchInSensors),
+                        ],
+                      ),
+                    ),
+                    IconButton(
+                      onPressed: widget.onClose,
+                      tooltip: l10n.close,
+                      icon: const Icon(Icons.close),
+                    ),
+                  ],
+                ),
+              ),
+              Padding(
+                padding: const EdgeInsets.fromLTRB(20, 0, 20, 12),
+                child: TextField(
+                  controller: _searchController,
+                  onChanged: (_) => setState(() {}),
+                  decoration: const InputDecoration(
+                    prefixIcon: Icon(Icons.search),
+                    hintText: 'Search sensors',
+                    border: OutlineInputBorder(),
+                  ),
+                ),
+              ),
+              Expanded(
+                child: filteredCandidates.isEmpty
+                    ? const Padding(
+                        padding: EdgeInsets.symmetric(
+                          horizontal: 20,
+                          vertical: 16,
+                        ),
+                        child: Align(
+                          alignment: Alignment.topLeft,
+                          child: Text(
+                            'No sensor candidates match your search.',
+                          ),
+                        ),
+                      )
+                    : ListView.builder(
+                        padding: const EdgeInsets.only(bottom: 20),
+                        itemCount: filteredCandidates.length,
+                        itemBuilder: (context, index) {
+                          final contact = filteredCandidates[index];
+                          return ListTile(
+                            contentPadding: const EdgeInsets.symmetric(
+                              horizontal: 20,
+                              vertical: 4,
+                            ),
+                            leading: CircleAvatar(
+                              radius: 24,
+                              backgroundColor: const Color(0xFFDDEAF8),
+                              child: Icon(
+                                _typeIcon(contact),
+                                color: const Color(0xFF1E4F7A),
+                              ),
+                            ),
+                            title: Text(contact.displayName),
+                            subtitle: _SensorCandidatePreview(contact: contact),
+                            isThreeLine: true,
+                            onTap: () => widget.onSelect(contact),
+                          );
+                        },
+                      ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class SensorCustomizeView extends StatelessWidget {
   final String publicKeyHex;
   final Contact? initialContact;
+  final bool showLivePreview;
   final Future<void> Function({
     required BuildContext context,
     required String publicKeyHex,
@@ -485,10 +591,12 @@ class _SensorCustomizeView extends StatelessWidget {
   })
   onRenameMetric;
 
-  const _SensorCustomizeView({
+  const SensorCustomizeView({
+    super.key,
     required this.publicKeyHex,
     required this.initialContact,
     required this.onRenameMetric,
+    this.showLivePreview = true,
   });
 
   @override
@@ -533,35 +641,39 @@ class _SensorCustomizeView extends StatelessWidget {
           body: ListView(
             padding: EdgeInsets.fromLTRB(16, 16, 16, 24),
             children: [
-              _SensorCustomizeSectionCard(
-                title: AppLocalizations.of(context)!.livePreview,
-                subtitle:
-                    'Changes apply immediately. This card matches the current dashboard layout for this sensor.',
-                child: SensorTelemetryCard(
-                  contact: contact,
-                  state: sensorsProvider.stateFor(publicKeyHex),
-                  visibleFields: visibleFields,
-                  fieldOrder: sensorsProvider.metricOrderFor(
-                    publicKeyHex,
-                    visibleFields,
-                  ),
-                  labelOverrides: sensorsProvider.labelOverridesFor(
-                    publicKeyHex,
-                  ),
-                  onShowMetHistory: contact == null
-                      ? null
-                      : (contact) => showBTHomeMetHistorySheet(
-                          context,
-                          contact: contact,
+              if (showLivePreview)
+                _SensorCustomizeSectionCard(
+                  title: AppLocalizations.of(context)!.livePreview,
+                  subtitle:
+                      'Changes apply immediately. This card matches the current dashboard layout for this sensor.',
+                  child: SensorTelemetryCard(
+                    contact: contact,
+                    state: sensorsProvider.stateFor(publicKeyHex),
+                    visibleFields: visibleFields,
+                    fieldOrder: sensorsProvider.metricOrderFor(
+                      publicKeyHex,
+                      visibleFields,
+                    ),
+                    labelOverrides: sensorsProvider.labelOverridesFor(
+                      publicKeyHex,
+                    ),
+                    onShowMetHistory: contact == null
+                        ? null
+                        : (contact) => showBTHomeMetHistorySheet(
+                            context,
+                            contact: contact,
+                          ),
+                    fieldSpans: {
+                      for (final field in visibleFields)
+                        field: sensorsProvider.fieldSpanFor(
+                          publicKeyHex,
+                          field,
                         ),
-                  fieldSpans: {
-                    for (final field in visibleFields)
-                      field: sensorsProvider.fieldSpanFor(publicKeyHex, field),
-                  },
-                  margin: EdgeInsets.zero,
-                  emptyMetricsMessage: 'No telemetry fields available yet.',
+                    },
+                    margin: EdgeInsets.zero,
+                    emptyMetricsMessage: 'No telemetry fields available yet.',
+                  ),
                 ),
-              ),
               _SensorCustomizeSectionCard(
                 title: AppLocalizations.of(context)!.refreshSchedule,
                 subtitle:

lib/screens/settings_screen.dart

@@ -16,6 +16,7 @@ import '../providers/app_provider.dart';
 import '../providers/connection_provider.dart';
 import '../providers/drawing_provider.dart';
 import '../providers/map_provider.dart';
+import '../models/contact.dart';
 import '../models/config_profile.dart';
 import '../services/location_tracking_service.dart';
 import '../services/locale_preferences.dart';
@@ -24,6 +25,7 @@ import '../services/update_checker_service.dart';
 import '../services/voice_bitrate_preferences.dart';
 import '../services/image_preferences.dart';
 import '../services/route_hash_preferences.dart';
+import '../services/message_destination_preferences.dart';
 import '../services/image_codec_service.dart';
 import '../services/developer_mode_service.dart';
 import '../services/notification_service.dart';
@@ -59,6 +61,8 @@ class SettingsScreen extends StatefulWidget {
 }
 
 class _SettingsScreenState extends State<SettingsScreen> {
+  static const String _publicChannelPublicKeyHex =
+      '0000000000000000000000000000000000000000000000000000000000000000';
   late AppThemeMode _selectedTheme;
   late Locale? _selectedLocale;
   PackageInfo? _packageInfo;
@@ -79,6 +83,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
   bool _fastLocationUpdatesEnabled = false;
   double _fastLocationMovementThresholdMeters = 10.0;
   int _fastLocationActiveCadenceSeconds = 10;
+  int? _fastLocationChannelIdx;
   bool _rotateMapWithHeading = false;
   bool _showMapDebugInfo = false;
   bool _openMapInFullscreen = false;
@@ -89,6 +94,10 @@ class _SettingsScreenState extends State<SettingsScreen> {
   bool _muteForegroundNotifications = true;
   bool _isDeveloperModeEnabled = false;
   bool _profilesEnabled = false;
+  bool _messageDestinationLockEnabled = false;
+  String _messageDestinationLockType =
+      MessageDestinationPreferences.destinationTypeChannel;
+  String? _messageDestinationLockPublicKey = _publicChannelPublicKeyHex;
   DateTime? _onlineTraceCacheUpdatedAt;
   bool _isClearingOnlineTraceCache = false;
   int _versionTapCount = 0;
@@ -112,6 +121,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
     _loadOnlineTraceCacheStatus();
     _loadMapPreferences();
     _loadNotificationPreferences();
+    _loadMessageDestinationLock();
   }
 
   @override
@@ -182,6 +192,94 @@ class _SettingsScreenState extends State<SettingsScreen> {
     });
   }
 
+  Future<void> _loadMessageDestinationLock() async {
+    final lockedDestination =
+        await MessageDestinationPreferences.getLockedDestination();
+    if (!mounted) return;
+
+    setState(() {
+      _messageDestinationLockEnabled = lockedDestination != null;
+      _messageDestinationLockType =
+          lockedDestination?['publicKey'] == null
+          ? MessageDestinationPreferences.destinationTypeChannel
+          : lockedDestination?['type'] ??
+                MessageDestinationPreferences.destinationTypeChannel;
+      _messageDestinationLockPublicKey =
+          lockedDestination?['publicKey'] ?? _publicChannelPublicKeyHex;
+    });
+  }
+
+  List<Contact> _messageDestinationLockOptions(
+    ContactsProvider contactsProvider,
+  ) {
+    final channels = List<Contact>.from(contactsProvider.channels)
+      ..sort((a, b) {
+        if (a.isPublicChannel != b.isPublicChannel) {
+          return a.isPublicChannel ? -1 : 1;
+        }
+        return a.displayName.toLowerCase().compareTo(
+          b.displayName.toLowerCase(),
+        );
+      });
+    final rooms = List<Contact>.from(contactsProvider.rooms)
+      ..sort(
+        (a, b) => a.displayName.toLowerCase().compareTo(
+          b.displayName.toLowerCase(),
+        ),
+      );
+
+    return [...channels, ...rooms];
+  }
+
+  String _messageDestinationLockLabel(BuildContext context, Contact contact) {
+    final name = contact.isChannel
+        ? contact.getLocalizedDisplayName(context)
+        : contact.displayName;
+    return contact.isRoom ? 'Room: $name' : 'Channel: $name';
+  }
+
+  String _messageDestinationLockTypeForContact(Contact contact) {
+    return contact.isRoom
+        ? MessageDestinationPreferences.destinationTypeRoom
+        : MessageDestinationPreferences.destinationTypeChannel;
+  }
+
+  String? _selectedMessageDestinationLockValue(List<Contact> destinations) {
+    final currentValue = _messageDestinationLockPublicKey;
+    if (currentValue != null &&
+        destinations.any((contact) => contact.publicKeyHex == currentValue)) {
+      return currentValue;
+    }
+
+    return destinations.isEmpty ? null : destinations.first.publicKeyHex;
+  }
+
+  Future<void> _setMessageDestinationLock({
+    required bool enabled,
+    String? type,
+    String? recipientPublicKey,
+  }) async {
+    final nextType = type ?? _messageDestinationLockType;
+    final nextRecipientPublicKey =
+        recipientPublicKey ??
+        _messageDestinationLockPublicKey ??
+        _publicChannelPublicKeyHex;
+
+    await MessageDestinationPreferences.setLockedDestination(
+      enabled: enabled,
+      type: nextType,
+      recipientPublicKey: enabled ? nextRecipientPublicKey : null,
+    );
+
+    if (!mounted) return;
+
+    setState(() {
+      _messageDestinationLockEnabled = enabled;
+      _messageDestinationLockType = nextType;
+      _messageDestinationLockPublicKey = nextRecipientPublicKey;
+    });
+  }
+
   Future<void> _handleVersionTap() async {
     if (_isDeveloperModeEnabled) {
       await DeveloperModeService.setEnabled(false);
@@ -314,6 +412,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
           _locationService.fastLocationMovementThresholdMeters;
       _fastLocationActiveCadenceSeconds =
           _locationService.fastLocationActiveCadenceSeconds;
+      _fastLocationChannelIdx = _locationService.fastLocationChannelIdx;
     });
   }
 
@@ -338,7 +437,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
           keyboardType: const TextInputType.numberWithOptions(decimal: true),
           decoration: const InputDecoration(
             labelText: 'Meters',
-            helperText: 'Valid range: 1 to 1000 meters',
+            helperText: 'Valid range: 10 to 1000 meters',
           ),
         ),
         actions: [
@@ -350,7 +449,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
             onPressed: () {
               final parsed = double.tryParse(controller.text.trim());
               if (parsed == null) return;
-              Navigator.pop(context, parsed.clamp(1.0, 1000.0));
+              Navigator.pop(context, parsed.clamp(10.0, 1000.0));
             },
             child: const Text('Save'),
           ),
@@ -379,7 +478,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
           keyboardType: TextInputType.number,
           decoration: const InputDecoration(
             labelText: 'Seconds',
-            helperText: 'Valid range: 5 to 60 seconds',
+            helperText: 'Valid range: 10 to 31 seconds',
           ),
         ),
         actions: [
@@ -391,7 +490,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
             onPressed: () {
               final parsed = int.tryParse(controller.text.trim());
               if (parsed == null) return;
-              Navigator.pop(context, parsed.clamp(5, 60));
+              Navigator.pop(context, parsed.clamp(10, 31));
             },
             child: const Text('Save'),
           ),
@@ -407,6 +506,97 @@ class _SettingsScreenState extends State<SettingsScreen> {
     });
   }
 
+  String _describeFastLocationChannel(List<Contact> channels) {
+    final channelIdx = _fastLocationChannelIdx;
+    if (channelIdx == null) {
+      return 'Not set';
+    }
+
+    for (final channel in channels) {
+      final idx = channel.publicKey.length > 1 ? channel.publicKey[1] : 0;
+      if (idx == channelIdx) {
+        return '${channel.getLocalizedDisplayName(context)} (slot $channelIdx)';
+      }
+    }
+
+    return 'Channel $channelIdx unavailable';
+  }
+
+  Future<void> _sendTestFastLocationUpdate() async {
+    final appProvider = context.read<AppProvider>();
+    final sent = await appProvider.sendTestFastLocationUpdate();
+    if (!mounted) return;
+
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: Text(
+          sent
+              ? 'Test fast GPS update sent.'
+              : 'Unable to send test fast GPS update.',
+        ),
+        backgroundColor: sent ? Colors.green : Colors.orange,
+      ),
+    );
+  }
+
+  Future<void> _editFastLocationChannel() async {
+    final channels =
+        List<Contact>.from(context.read<ContactsProvider>().channels)
+          ..removeWhere((c) => c.isPublicChannel)
+          ..sort((a, b) {
+            final aIdx = a.publicKey.length > 1 ? a.publicKey[1] : 0;
+            final bIdx = b.publicKey.length > 1 ? b.publicKey[1] : 0;
+            return aIdx.compareTo(bIdx);
+          });
+
+    final selected = await showModalBottomSheet<int?>(
+      context: context,
+      builder: (sheetContext) => SafeArea(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            ListTile(
+              leading: const Icon(Icons.block),
+              title: const Text('Disable fast GPS publishing'),
+              trailing: _fastLocationChannelIdx == null
+                  ? const Icon(Icons.check)
+                  : null,
+              onTap: () => Navigator.pop(sheetContext, -1),
+            ),
+            for (final channel in channels)
+              ListTile(
+                leading: const Icon(Icons.tag),
+                title: Text(channel.getLocalizedDisplayName(sheetContext)),
+                subtitle: Text(
+                  'Channel ${channel.publicKey.length > 1 ? channel.publicKey[1] : 0}',
+                ),
+                trailing:
+                    _fastLocationChannelIdx ==
+                        (channel.publicKey.length > 1
+                            ? channel.publicKey[1]
+                            : 0)
+                    ? const Icon(Icons.check)
+                    : null,
+                onTap: () => Navigator.pop(
+                  sheetContext,
+                  channel.publicKey.length > 1 ? channel.publicKey[1] : 0,
+                ),
+              ),
+          ],
+        ),
+      ),
+    );
+
+    if (selected == null) return;
+    await _locationService.updateFastLocationChannelIdx(
+      selected < 0 ? null : selected,
+    );
+    if (!mounted) return;
+    setState(() {
+      _fastLocationChannelIdx = _locationService.fastLocationChannelIdx;
+    });
+  }
+
   Future<void> _saveImageMaxSize(int size) async {
     await ImagePreferences.setMaxSize(size);
     if (!mounted) return;
@@ -1336,6 +1526,90 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 },
               ),
             ),
+            SwitchListTile(
+              secondary: const Icon(Icons.lock_outline),
+              title: const Text('Lock messages to one channel or room'),
+              subtitle: const Text(
+                'Keep the Messages tab and composer fixed on one destination. Direct messages from Contacts still open as usual.',
+              ),
+              value: _messageDestinationLockEnabled,
+              onChanged: (value) async {
+                final contactsProvider = context.read<ContactsProvider>();
+                final options = _messageDestinationLockOptions(
+                  contactsProvider,
+                );
+                final selectedPublicKey =
+                    _selectedMessageDestinationLockValue(options) ??
+                    _publicChannelPublicKeyHex;
+                final selectedContact = options.where((contact) {
+                  return contact.publicKeyHex == selectedPublicKey;
+                }).firstOrNull;
+
+                await _setMessageDestinationLock(
+                  enabled: value,
+                  type: selectedContact == null
+                      ? MessageDestinationPreferences.destinationTypeChannel
+                      : _messageDestinationLockTypeForContact(selectedContact),
+                  recipientPublicKey: selectedPublicKey,
+                );
+              },
+            ),
+            Consumer<ContactsProvider>(
+              builder: (context, contactsProvider, child) {
+                final options = _messageDestinationLockOptions(
+                  contactsProvider,
+                );
+                final selectedValue =
+                    _selectedMessageDestinationLockValue(options);
+
+                return Padding(
+                  padding: const EdgeInsets.fromLTRB(16, 12, 16, 16),
+                  child: DropdownButtonFormField<String>(
+                    key: ValueKey(selectedValue),
+                    initialValue: selectedValue,
+                    isExpanded: true,
+                    decoration: const InputDecoration(
+                      labelText: 'Locked channel or room',
+                      prefixIcon: Icon(Icons.forum_outlined),
+                      border: OutlineInputBorder(),
+                    ),
+                    items: [
+                      for (final contact in options)
+                        DropdownMenuItem<String>(
+                          value: contact.publicKeyHex,
+                          child: Text(
+                            _messageDestinationLockLabel(context, contact),
+                            overflow: TextOverflow.ellipsis,
+                          ),
+                        ),
+                    ],
+                    onChanged:
+                        _messageDestinationLockEnabled && options.isNotEmpty
+                        ? (value) async {
+                            if (value == null) {
+                              return;
+                            }
+
+                            final selectedContact = options.where((contact) {
+                              return contact.publicKeyHex == value;
+                            }).firstOrNull;
+                            if (selectedContact == null) {
+                              return;
+                            }
+
+                            await _setMessageDestinationLock(
+                              enabled: true,
+                              type: _messageDestinationLockTypeForContact(
+                                selectedContact,
+                              ),
+                              recipientPublicKey: value,
+                            );
+                          }
+                        : null,
+                  ),
+                );
+              },
+            ),
             ListTile(
               leading: const Icon(Icons.delete_sweep, color: Colors.red),
               title: const Text(
@@ -1766,6 +2040,26 @@ class _SettingsScreenState extends State<SettingsScreen> {
               trailing: const Icon(Icons.chevron_right),
               onTap: _editFastLocationActiveCadence,
             ),
+            ListTile(
+              leading: const Icon(Icons.forum),
+              title: const Text('Fast GPS target channel'),
+              subtitle: Text(
+                _describeFastLocationChannel(
+                  context.watch<ContactsProvider>().channels,
+                ),
+              ),
+              trailing: const Icon(Icons.chevron_right),
+              onTap: _editFastLocationChannel,
+            ),
+            ListTile(
+              leading: const Icon(Icons.send),
+              title: const Text('Test send update'),
+              subtitle: const Text(
+                'Send one fast GPS update immediately to the configured channel.',
+              ),
+              trailing: const Icon(Icons.chevron_right),
+              onTap: _sendTestFastLocationUpdate,
+            ),
             ListTile(
               leading: Icon(Icons.location_on),
               title: Text(AppLocalizations.of(context)!.locationPermission),

lib/screens/spectrum_scan_screen.dart

@@ -1,602 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:meshcore_client/meshcore_client.dart';
-import 'package:provider/provider.dart';
-import '../models/device_info.dart';
-import '../providers/connection_provider.dart';
-import '../widgets/device/spectrum_scan_panel.dart';
-import '../l10n/app_localizations.dart';
-
-class SpectrumScanScreen extends StatefulWidget {
-  const SpectrumScanScreen({super.key});
-
-  @override
-  State<SpectrumScanScreen> createState() => _SpectrumScanScreenState();
-}
-
-class _SpectrumScanScreenState extends State<SpectrumScanScreen> {
-  static const List<String> _bandwidthOptions = [
-    '7.8 kHz',
-    '10.4 kHz',
-    '15.6 kHz',
-    '20.8 kHz',
-    '31.25 kHz',
-    '41.7 kHz',
-    '62.5 kHz',
-    '125 kHz',
-    '250 kHz',
-    '500 kHz',
-  ];
-
-  String _selectedBandwidth = '62.5 kHz';
-  bool _isSpectrumScanRunning = false;
-  bool _rangeInitialized = false;
-  String? _lastRangeSourceKey;
-  late double _scanRangeMinMhz;
-  late double _scanRangeMaxMhz;
-  late RangeValues _scanRangeValues;
-  List<SpectrumScanCandidate> _scanCandidates = const [];
-  int? _selectedScanFrequencyKhz;
-  int _completedScanSectors = 0;
-  int _totalScanSectors = 0;
-
-  List<SpectrumScanCandidate> get _recommendedScanCandidates =>
-      _scanCandidates.take(8).toList();
-
-  @override
-  void initState() {
-    super.initState();
-    final deviceInfo = _deviceInfo;
-    if (deviceInfo.radioBw != null &&
-        deviceInfo.radioBw! >= 0 &&
-        deviceInfo.radioBw! < _bandwidthOptions.length) {
-      _selectedBandwidth = _bandwidthOptions[deviceInfo.radioBw!];
-    }
-    _syncRangeFromDevice(deviceInfo);
-    _selectedScanFrequencyKhz = deviceInfo.radioFreq;
-  }
-
-  DeviceInfo get _deviceInfo => context.read<ConnectionProvider>().deviceInfo;
-
-  @override
-  void didChangeDependencies() {
-    super.didChangeDependencies();
-    _syncRangeFromDevice(context.watch<ConnectionProvider>().deviceInfo);
-  }
-
-  void _syncRangeFromDevice(DeviceInfo deviceInfo) {
-    final minKhz = deviceInfo.spectrumScanMinKhz;
-    final maxKhz = deviceInfo.spectrumScanMaxKhz;
-    late double normalizedMinMhz;
-    late double normalizedMaxMhz;
-    late String sourceKey;
-
-    if (minKhz != null && maxKhz != null && maxKhz > minKhz) {
-      final normalized = _normalizeScanRange(
-        minKhz / 1000.0,
-        maxKhz / 1000.0,
-        deviceInfo.radioFreq != null ? deviceInfo.radioFreq! / 1000.0 : null,
-      );
-      normalizedMinMhz = normalized.$1;
-      normalizedMaxMhz = normalized.$2;
-      sourceKey = 'fw:$minKhz:$maxKhz';
-    } else {
-      final normalized = _normalizeScanRange(
-        null,
-        null,
-        deviceInfo.radioFreq != null ? deviceInfo.radioFreq! / 1000.0 : null,
-      );
-      normalizedMinMhz = normalized.$1;
-      normalizedMaxMhz = normalized.$2;
-      sourceKey =
-          'fallback:${deviceInfo.radioFreq != null ? deviceInfo.radioFreq! ~/ 1000 : 869525}';
-    }
-
-    if (_rangeInitialized && _lastRangeSourceKey == sourceKey) {
-      return;
-    }
-
-    _scanRangeMinMhz = normalizedMinMhz;
-    _scanRangeMaxMhz = normalizedMaxMhz;
-
-    if (_scanRangeMaxMhz <= _scanRangeMinMhz) {
-      _scanRangeMaxMhz = _scanRangeMinMhz + 0.5;
-    }
-
-    _scanRangeValues = RangeValues(_scanRangeMinMhz, _scanRangeMaxMhz);
-    _rangeInitialized = true;
-    _lastRangeSourceKey = sourceKey;
-  }
-
-  (double, double) _normalizeScanRange(
-    double? minMhz,
-    double? maxMhz,
-    double? centerMhz,
-  ) {
-    const hardMinMhz = 800.0;
-    const hardMaxMhz = 950.0;
-    final center = centerMhz ?? 869.525;
-
-    if (minMhz != null && maxMhz != null) {
-      final clampedMin = minMhz.clamp(hardMinMhz, hardMaxMhz);
-      final clampedMax = maxMhz.clamp(hardMinMhz, hardMaxMhz);
-      if (clampedMax > clampedMin) {
-        return (clampedMin, clampedMax);
-      }
-    }
-
-    if (center >= 900.0 && center <= 930.0) {
-      return (902.0, 928.0);
-    }
-
-    return (863.0, 870.0);
-  }
-
-  double _bandwidthToKhz(String bw) {
-    switch (bw) {
-      case '7.8 kHz':
-        return 7.8;
-      case '10.4 kHz':
-        return 10.4;
-      case '15.6 kHz':
-        return 15.6;
-      case '20.8 kHz':
-        return 20.8;
-      case '31.25 kHz':
-        return 31.25;
-      case '41.7 kHz':
-        return 41.7;
-      case '62.5 kHz':
-        return 62.5;
-      case '125 kHz':
-        return 125.0;
-      case '250 kHz':
-        return 250.0;
-      case '500 kHz':
-        return 500.0;
-      default:
-        return 62.5;
-    }
-  }
-
-  String _currentParamProfile(DeviceInfo deviceInfo) {
-    final sf = deviceInfo.radioSf ?? 8;
-    final cr = deviceInfo.radioCr ?? 8;
-    return 'BW $_selectedBandwidth  |  SF$sf  |  CR 4/$cr';
-  }
-
-  String _recommendationTitle(int index) {
-    switch (index) {
-      case 0:
-        return 'Best candidate';
-      case 1:
-        return 'Alternate';
-      case 2:
-        return 'Fallback';
-      default:
-        return 'Candidate ${index + 1}';
-    }
-  }
-
-  List<int> _possibleBracketFrequenciesKhz() {
-    final bandwidthKhz = _bandwidthToKhz(_selectedBandwidth);
-    final halfBandwidthKhz = bandwidthKhz / 2.0;
-    final startKhz = (_scanRangeValues.start * 1000).round();
-    final stopKhz = (_scanRangeValues.end * 1000).round();
-    final firstCenterKhz = (startKhz + halfBandwidthKhz).round();
-    final lastCenterKhz = (stopKhz - halfBandwidthKhz).round();
-
-    if (lastCenterKhz < firstCenterKhz) {
-      return const [];
-    }
-
-    final stepKhz = bandwidthKhz >= 125.0 ? bandwidthKhz.round() : 25;
-    final centers = <int>[];
-    for (
-      var centerKhz = firstCenterKhz;
-      centerKhz <= lastCenterKhz && centers.length < 8;
-      centerKhz += stepKhz
-    ) {
-      centers.add(centerKhz);
-    }
-
-    if (centers.isEmpty || centers.last != lastCenterKhz) {
-      centers.add(lastCenterKhz);
-    }
-
-    return centers.toSet().toList()..sort();
-  }
-
-  void _resetDerivedScanResults() {
-    _scanCandidates = const [];
-    _selectedScanFrequencyKhz = null;
-  }
-
-  List<(int startKhz, int stopKhz)> _buildScanSectors(double bandwidthKhz) {
-    final startKhz = (_scanRangeValues.start * 1000).round();
-    final stopKhz = (_scanRangeValues.end * 1000).round();
-    final sectorWidthKhz = (bandwidthKhz * 24).round().clamp(250, 1200);
-    final overlapKhz = bandwidthKhz.round().clamp(8, 500);
-    final sectors = <(int startKhz, int stopKhz)>[];
-
-    var sectorStartKhz = startKhz;
-    while (sectorStartKhz < stopKhz) {
-      final sectorStopKhz = (sectorStartKhz + sectorWidthKhz).clamp(
-        sectorStartKhz + overlapKhz,
-        stopKhz,
-      );
-      sectors.add((sectorStartKhz, sectorStopKhz));
-      if (sectorStopKhz >= stopKhz) {
-        break;
-      }
-      sectorStartKhz = sectorStopKhz - overlapKhz;
-    }
-
-    return sectors;
-  }
-
-  List<SpectrumScanCandidate> _mergeSectorCandidates(
-    Iterable<SpectrumScanCandidate> candidates,
-  ) {
-    final byFrequency = <int, SpectrumScanCandidate>{};
-    for (final candidate in candidates) {
-      final existing = byFrequency[candidate.centerFrequencyKhz];
-      if (existing == null ||
-          candidate.occupancyPercent < existing.occupancyPercent ||
-          (candidate.occupancyPercent == existing.occupancyPercent &&
-              candidate.peakRssiDbm < existing.peakRssiDbm) ||
-          (candidate.occupancyPercent == existing.occupancyPercent &&
-              candidate.peakRssiDbm == existing.peakRssiDbm &&
-              candidate.avgRssiDbm < existing.avgRssiDbm)) {
-        byFrequency[candidate.centerFrequencyKhz] = candidate;
-      }
-    }
-
-    final merged = byFrequency.values.toList()
-      ..sort((a, b) {
-        final occupancyCompare = a.occupancyPercent.compareTo(
-          b.occupancyPercent,
-        );
-        if (occupancyCompare != 0) return occupancyCompare;
-        final peakCompare = a.peakRssiDbm.compareTo(b.peakRssiDbm);
-        if (peakCompare != 0) return peakCompare;
-        return a.avgRssiDbm.compareTo(b.avgRssiDbm);
-      });
-    return merged;
-  }
-
-  Future<void> _runSpectrumScan() async {
-    final connectionProvider = context.read<ConnectionProvider>();
-    final bandwidthKhz = _bandwidthToKhz(_selectedBandwidth);
-    final sectors = _buildScanSectors(bandwidthKhz);
-    final sectorCandidates = <SpectrumScanCandidate>[];
-
-    setState(() {
-      _isSpectrumScanRunning = true;
-      _resetDerivedScanResults();
-      _completedScanSectors = 0;
-      _totalScanSectors = sectors.length;
-    });
-
-    try {
-      for (var i = 0; i < sectors.length; i++) {
-        final sector = sectors[i];
-        final result = await connectionProvider.scanSpectrum(
-          startFrequencyKhz: sector.$1,
-          stopFrequencyKhz: sector.$2,
-          bandwidthKhz: bandwidthKhz.round(),
-          stepKhz: (bandwidthKhz / 2).round().clamp(1, 1000),
-          dwellMs: 160,
-          thresholdDb: 8,
-        );
-        if (result != null) {
-          sectorCandidates.addAll(result.candidates);
-          final mergedCandidates = _mergeSectorCandidates(sectorCandidates);
-          if (mounted) {
-            setState(() {
-              _scanCandidates = mergedCandidates;
-              if (_selectedScanFrequencyKhz == null &&
-                  mergedCandidates.isNotEmpty) {
-                _selectedScanFrequencyKhz =
-                    mergedCandidates.first.centerFrequencyKhz;
-              }
-              _completedScanSectors = i + 1;
-            });
-          }
-        } else if (mounted) {
-          setState(() {
-            _completedScanSectors = i + 1;
-          });
-        }
-      }
-    } finally {
-      if (mounted) {
-        setState(() {
-          _isSpectrumScanRunning = false;
-          if (_completedScanSectors == 0) {
-            _totalScanSectors = sectors.length;
-          }
-        });
-      }
-    }
-
-    if (!mounted) return;
-
-    final mergedCandidates = _mergeSectorCandidates(sectorCandidates);
-    if (mergedCandidates.isEmpty) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(
-          content: Text(AppLocalizations.of(context)!.spectrumScanReturnedNoCandidateFrequencies),
-          backgroundColor: Colors.red,
-        ),
-      );
-      return;
-    }
-
-    setState(() {
-      _scanCandidates = mergedCandidates;
-      _selectedScanFrequencyKhz = mergedCandidates.first.centerFrequencyKhz;
-    });
-  }
-
-  Future<void> _applySelectedScanFrequency() async {
-    if (_selectedScanFrequencyKhz == null) return;
-
-    final connectionProvider = context.read<ConnectionProvider>();
-    final deviceInfo = connectionProvider.deviceInfo;
-
-    await connectionProvider.setRadioParams(
-      frequency: _selectedScanFrequencyKhz!,
-      bandwidth: _bandwidthOptions.indexOf(_selectedBandwidth),
-      spreadingFactor: deviceInfo.radioSf ?? 8,
-      codingRate: deviceInfo.radioCr ?? 8,
-      repeat: deviceInfo.clientRepeat,
-    );
-    await connectionProvider.refreshDeviceInfo();
-
-    if (!mounted) return;
-    ScaffoldMessenger.of(context).showSnackBar(
-      SnackBar(
-        content: Text(
-          'Applied ${(_selectedScanFrequencyKhz! / 1000.0).toStringAsFixed(3)} MHz',
-        ),
-        backgroundColor: Colors.green,
-      ),
-    );
-  }
-
-  int? _currentPreviewFrequencyKhz(DeviceInfo deviceInfo) {
-    if (_selectedScanFrequencyKhz != null) {
-      return _selectedScanFrequencyKhz;
-    }
-    return deviceInfo.radioFreq;
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final deviceInfo = context.watch<ConnectionProvider>().deviceInfo;
-    final theme = Theme.of(context);
-    final possibleBracketFrequencies = _possibleBracketFrequenciesKhz();
-    final recommendedScanCandidates = _recommendedScanCandidates;
-    final recommendationFrequencies = recommendedScanCandidates.isNotEmpty
-        ? recommendedScanCandidates
-              .map((candidate) => candidate.centerFrequencyKhz)
-              .toList()
-        : possibleBracketFrequencies;
-
-    return Scaffold(
-      appBar: AppBar(title: Text(AppLocalizations.of(context)!.spectrumScan)),
-      body: ListView(
-        padding: const EdgeInsets.all(16),
-        children: [
-          Card(
-            child: Padding(
-              padding: const EdgeInsets.all(16),
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                children: [
-                  DropdownButtonFormField<String>(
-                    initialValue: _selectedBandwidth,
-                    decoration: const InputDecoration(
-                      labelText: 'Bandwidth',
-                      border: OutlineInputBorder(),
-                      helperText:
-                          'Scan and apply frequencies for this bandwidth',
-                    ),
-                    items: _bandwidthOptions.map((value) {
-                      return DropdownMenuItem<String>(
-                        value: value,
-                        child: Text(value),
-                      );
-                    }).toList(),
-                    onChanged: (value) {
-                      if (value == null) return;
-                      setState(() {
-                        _selectedBandwidth = value;
-                        _resetDerivedScanResults();
-                      });
-                    },
-                  ),
-                  const SizedBox(height: 16),
-                  Text(
-                    deviceInfo.spectrumScanMinKhz != null &&
-                            deviceInfo.spectrumScanMaxKhz != null
-                        ? 'Firmware scan range: ${_scanRangeMinMhz.toStringAsFixed(3)}-${_scanRangeMaxMhz.toStringAsFixed(3)} MHz'
-                        : 'Fallback scan range selected from current band. MeshCore commonly uses EU868 or US915.',
-                    style: theme.textTheme.bodySmall?.copyWith(
-                      color: theme.colorScheme.onSurfaceVariant,
-                    ),
-                  ),
-                  if (_isSpectrumScanRunning) ...[
-                    const SizedBox(height: 8),
-                    Text(
-                      'Scanning sector ${_completedScanSectors + 1} of $_totalScanSectors. Results update as each sector completes.',
-                      style: theme.textTheme.bodySmall?.copyWith(
-                        color: theme.colorScheme.primary,
-                        fontWeight: FontWeight.w600,
-                      ),
-                    ),
-                  ],
-                  const SizedBox(height: 12),
-                  SpectrumScanPanel(
-                    theme: theme,
-                    scanSupported: deviceInfo.supportsSpectrumScan == true,
-                    isRunning: _isSpectrumScanRunning,
-                    rangeMinMhz: _scanRangeMinMhz,
-                    rangeMaxMhz: _scanRangeMaxMhz,
-                    rangeValues: _scanRangeValues,
-                    bandwidthKhz: _bandwidthToKhz(_selectedBandwidth),
-                    selectedFrequencyKhz: _currentPreviewFrequencyKhz(
-                      deviceInfo,
-                    ),
-                    graphCandidates: _scanCandidates,
-                    selectableCandidates: recommendedScanCandidates,
-                    onRangeChanged: (values) {
-                      setState(() {
-                        _scanRangeValues = values;
-                        _resetDerivedScanResults();
-                      });
-                    },
-                    onCandidateChanged: (value) {
-                      setState(() {
-                        _selectedScanFrequencyKhz = value;
-                      });
-                    },
-                    onRunScan: _runSpectrumScan,
-                    onApplySelected: _applySelectedScanFrequency,
-                  ),
-                  if (recommendationFrequencies.isNotEmpty) ...[
-                    const SizedBox(height: 18),
-                    Text(
-                      _scanCandidates.isNotEmpty
-                          ? 'Recommended profiles'
-                          : 'Possible brackets',
-                      style: theme.textTheme.titleMedium?.copyWith(
-                        fontWeight: FontWeight.w700,
-                      ),
-                    ),
-                    const SizedBox(height: 8),
-                    Text(
-                      _scanCandidates.isNotEmpty
-                          ? 'Suggested frequencies from the latest scan with the radio parameters to keep alongside them.'
-                          : 'Usable frequency brackets derived from the selected span and bandwidth, even without live scan data.',
-                      style: theme.textTheme.bodySmall?.copyWith(
-                        color: theme.colorScheme.onSurfaceVariant,
-                      ),
-                    ),
-                    const SizedBox(height: 12),
-                    for (
-                      var i = 0;
-                      i < recommendationFrequencies.length;
-                      i++
-                    ) ...[
-                      _RecommendationTile(
-                        title: _recommendationTitle(i),
-                        frequencyKhz: recommendationFrequencies[i],
-                        candidate: recommendedScanCandidates.isNotEmpty
-                            ? recommendedScanCandidates[i]
-                            : null,
-                        bandwidthKhz: _bandwidthToKhz(_selectedBandwidth),
-                        paramsLabel: _currentParamProfile(deviceInfo),
-                        isSelected:
-                            _selectedScanFrequencyKhz ==
-                            recommendationFrequencies[i],
-                        onSelect: () {
-                          setState(() {
-                            _selectedScanFrequencyKhz =
-                                recommendationFrequencies[i];
-                          });
-                        },
-                      ),
-                      if (i != recommendationFrequencies.length - 1)
-                        const SizedBox(height: 10),
-                    ],
-                  ],
-                ],
-              ),
-            ),
-          ),
-        ],
-      ),
-    );
-  }
-}
-
-class _RecommendationTile extends StatelessWidget {
-  final String title;
-  final int frequencyKhz;
-  final SpectrumScanCandidate? candidate;
-  final double bandwidthKhz;
-  final String paramsLabel;
-  final bool isSelected;
-  final VoidCallback onSelect;
-
-  const _RecommendationTile({
-    required this.title,
-    required this.frequencyKhz,
-    required this.candidate,
-    required this.bandwidthKhz,
-    required this.paramsLabel,
-    required this.isSelected,
-    required this.onSelect,
-  });
-
-  @override
-  Widget build(BuildContext context) {
-    final theme = Theme.of(context);
-    final scheme = theme.colorScheme;
-
-    return InkWell(
-      onTap: onSelect,
-      borderRadius: BorderRadius.circular(14),
-      child: Container(
-        padding: const EdgeInsets.all(14),
-        decoration: BoxDecoration(
-          color: isSelected
-              ? scheme.primaryContainer.withValues(alpha: 0.55)
-              : scheme.surfaceContainerHighest.withValues(alpha: 0.35),
-          borderRadius: BorderRadius.circular(14),
-          border: Border.all(
-            color: isSelected ? scheme.primary : scheme.outlineVariant,
-          ),
-        ),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            Row(
-              children: [
-                Expanded(
-                  child: Text(
-                    title,
-                    style: theme.textTheme.titleSmall?.copyWith(
-                      fontWeight: FontWeight.w700,
-                    ),
-                  ),
-                ),
-                if (isSelected)
-                  Icon(Icons.check_circle, color: scheme.primary, size: 18),
-              ],
-            ),
-            const SizedBox(height: 8),
-            Text(
-              '${(frequencyKhz / 1000.0).toStringAsFixed(3)} MHz',
-              style: theme.textTheme.headlineSmall?.copyWith(
-                fontWeight: FontWeight.w800,
-              ),
-            ),
-            const SizedBox(height: 6),
-            Text(paramsLabel, style: theme.textTheme.bodyMedium),
-            const SizedBox(height: 6),
-            Text(
-              candidate != null
-                  ? 'Occupancy ${candidate!.occupancyPercent}%  |  Avg ${candidate!.avgRssiDbm} dBm  |  Peak ${candidate!.peakRssiDbm} dBm'
-                  : 'Bracket ${(frequencyKhz / 1000.0 - bandwidthKhz / 2000.0).toStringAsFixed(3)}-${(frequencyKhz / 1000.0 + bandwidthKhz / 2000.0).toStringAsFixed(3)} MHz',
-              style: theme.textTheme.bodySmall?.copyWith(
-                color: scheme.onSurfaceVariant,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}

lib/screens/welcome_wizard_screen.dart

@@ -221,14 +221,13 @@ class _WelcomeWizardScreenState extends State<WelcomeWizardScreen> {
   }
 
   Future<void> _openConnectionDialog() async {
-    await showModalBottomSheet(
-      context: context,
-      isScrollControlled: true,
-      builder: (context) => const ConnectionDialog(),
+    final connected = await showConnectionDialogFlow(
+      context,
+      offerPostConnectRepeaterDiscovery: true,
     );
     if (!mounted) return;
     final connectionProvider = context.read<ConnectionProvider>();
-    if (connectionProvider.deviceInfo.isConnected) {
+    if (connected) {
       await connectionProvider.refreshDeviceInfo();
     }
     if (!mounted) return;

lib/services/app_config_snapshot_service.dart

@@ -144,11 +144,11 @@ class AppConfigSnapshotService {
     }
     if (section.fastLocationMovementThresholdMeters != null) {
       locationTracking.fastLocationMovementThresholdMeters =
-          section.fastLocationMovementThresholdMeters!;
+          section.fastLocationMovementThresholdMeters!.clamp(10.0, 1000.0);
     }
     if (section.fastLocationActiveCadenceSeconds != null) {
       locationTracking.fastLocationActiveCadenceSeconds =
-          section.fastLocationActiveCadenceSeconds!;
+          section.fastLocationActiveCadenceSeconds!.clamp(10, 31);
     }
     await locationTracking.saveSettings();
     await appProvider.reloadProfileScopedSettings();

lib/services/compass_support.dart

@@ -0,0 +1,11 @@
+import 'package:flutter/foundation.dart'
+    show TargetPlatform, defaultTargetPlatform, kIsWeb;
+
+class CompassSupport {
+  const CompassSupport._();
+
+  static bool get isAvailable =>
+      !kIsWeb &&
+      (defaultTargetPlatform == TargetPlatform.android ||
+          defaultTargetPlatform == TargetPlatform.iOS);
+}

lib/services/live_traffic_summary.dart

@@ -3,12 +3,136 @@ import '../utils/log_rx_route_decoder.dart';
 
 enum LiveTrafficBusyness { quiet, active, busy }
 
+class LiveTrafficPacketTypeDetails {
+  final int payloadType;
+  final String title;
+  final String label;
+  final String summary;
+  final String description;
+
+  const LiveTrafficPacketTypeDetails({
+    required this.payloadType,
+    required this.title,
+    required this.label,
+    required this.summary,
+    required this.description,
+  });
+}
+
 class LiveTrafficEntry {
   final BlePacketLog log;
   final DecodedLogRxRoute? route;
 
   const LiveTrafficEntry({required this.log, required this.route});
 
+  static const List<LiveTrafficPacketTypeDetails> _knownPayloadTypes = [
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x00,
+      title: 'FLOOD REQUEST',
+      label: 'Request',
+      summary: 'Encrypted request to a known peer',
+      description:
+          'Encrypted request to a known peer. The wire payload carries destination and source hashes plus a MAC, and the decrypted body starts with a timestamp followed by application-defined request data such as stats or keepalive requests.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x01,
+      title: 'FLOOD RESPONSE',
+      label: 'Response',
+      summary: 'Encrypted reply to a request',
+      description:
+          'Encrypted reply to a Request or Anonymous request. After decryption, the body is application-defined response data with no single generic response envelope.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x02,
+      title: 'FLOOD TEXT',
+      label: 'Text message',
+      summary: 'Encrypted direct text with timestamp and retry flags',
+      description:
+          'Encrypted direct text message to a known peer. The decrypted body contains a timestamp, a flags and attempt byte, and the message text.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x03,
+      title: 'FLOOD ACK',
+      label: 'Ack',
+      summary: '4-byte acknowledgement for an earlier message',
+      description:
+          'Short acknowledgement proving that a prior message was received. It carries a 4-byte checksum derived from the original message data.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x04,
+      title: 'FLOOD ADVERTISEMENT',
+      label: 'Advertisement',
+      summary: 'Signed node identity broadcast',
+      description:
+          'Signed node advertisement announcing a device identity plus app data such as a name or location. Receivers verify the signature before accepting it.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x05,
+      title: 'FLOOD GROUP_TEXT',
+      label: 'Group text',
+      summary: 'Encrypted channel text matched by channel hash',
+      description:
+          'Encrypted channel text message. It is matched by the first byte of SHA256(channel secret), then decrypted with the channel key. The plaintext is usually in the form "<sender name>: <message body>".',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x06,
+      title: 'FLOOD GROUP_DATA',
+      label: 'Group datagram',
+      summary: 'Encrypted channel data with type and length',
+      description:
+          'Encrypted channel datagram. After channel-hash matching and decryption, the body starts with a 16-bit data type and a 1-byte data length before the application payload.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x07,
+      title: 'FLOOD ANON_REQUEST',
+      label: 'Anonymous request',
+      summary: 'Request using an ephemeral sender key',
+      description:
+          'Encrypted request to a destination hash without using a stored sender identity. The packet includes the sender\'s ephemeral public key so the receiver can derive the shared secret.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x08,
+      title: 'FLOOD RETURNED_PATH',
+      label: 'Returned path',
+      summary:
+          'Return route back to the sender, with optional bundled ACK or response',
+      description:
+          'Path reply sent back to the original author to describe the route a received packet took. MeshCore stores that returned path as the peer\'s direct out-path and can bundle an ACK or response in the same payload.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x09,
+      title: 'FLOOD TRACE_PATH',
+      label: 'Trace path',
+      summary: 'Direct trace that records SNR at each hop',
+      description:
+          'Direct diagnostic packet that walks a supplied path and appends one SNR sample per hop. When it reaches the end of the path, the initiator can inspect hop-by-hop link quality.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x0A,
+      title: 'FLOOD MULTIPART',
+      label: 'Multipart packet',
+      summary: 'Wrapper for one packet in a multipart sequence',
+      description:
+          'Packet wrapper used when a logical message is split into a sequence. Current MeshCore code uses it for multipart ACKs, where the first nibble says how many parts remain.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x0B,
+      title: 'FLOOD CONTROL',
+      label: 'Control packet',
+      summary: 'Discovery or other control data',
+      description:
+          'Control or discovery payload, typically unencrypted. Current documented subtypes are discovery request and response packets used to find nearby nodes and report SNR.',
+    ),
+    LiveTrafficPacketTypeDetails(
+      payloadType: 0x0F,
+      title: 'RAW CUSTOM',
+      label: 'Custom packet',
+      summary: 'Application-defined custom packet',
+      description:
+          'Application-defined raw packet bytes for custom encryption or custom payload formats. MeshCore leaves the inner format up to the higher-level application.',
+    ),
+  ];
+
   bool get isMultiHop => (route?.hopCount ?? 0) > 1;
 
   int? get hopCount => route?.hopCount;
@@ -37,66 +161,39 @@ class LiveTrafficEntry {
         .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${payloadType.toRadixString(16).padLeft(2, '0')}';
+  static List<LiveTrafficPacketTypeDetails> get knownPayloadTypes =>
+      _knownPayloadTypes;
+
+  static LiveTrafficPacketTypeDetails payloadTypeDetails(int payloadType) {
+    for (final details in _knownPayloadTypes) {
+      if (details.payloadType == payloadType) {
+        return details;
+      }
     }
+    return LiveTrafficPacketTypeDetails(
+      payloadType: payloadType,
+      title: '0x${payloadType.toRadixString(16).padLeft(2, '0').toUpperCase()}',
+      label: '0x${payloadType.toRadixString(16).padLeft(2, '0')}',
+      summary: 'Unknown or application-specific protocol payload',
+      description:
+          'Unknown or application-specific packet type. Check the current MeshCore firmware or app-specific protocol docs for the exact payload format.',
+    );
+  }
+
+  static String payloadTypeLabel(int payloadType) {
+    return payloadTypeDetails(payloadType).label;
+  }
+
+  static String payloadTypeTitle(int payloadType) {
+    return payloadTypeDetails(payloadType).title;
   }
 
   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';
-    }
+    return payloadTypeDetails(payloadType).summary;
+  }
+
+  static String payloadTypeDescription(int payloadType) {
+    return payloadTypeDetails(payloadType).description;
   }
 }
 

lib/services/location_tracking_service.dart

@@ -20,6 +20,14 @@ import 'profiles_feature_service.dart';
 /// - MeshCore mesh network integration
 /// - Real-time position updates via callbacks
 class LocationTrackingService {
+  static const double _defaultFastLocationMovementThresholdMeters = 10.0;
+  static const double _minFastLocationMovementThresholdMeters = 10.0;
+  static const int _defaultFastLocationActiveCadenceSeconds = 10;
+  static const int _minFastLocationActiveCadenceSeconds = 10;
+  static const int _maxFastLocationActiveCadenceSeconds = 31;
+  static const Duration _fastLocationMinimumUpdateInterval = Duration(
+    seconds: 31,
+  );
   // ============================================================================
   // Singleton Pattern
   // ============================================================================
@@ -49,6 +57,7 @@ class LocationTrackingService {
       'fast_location_movement_threshold_meters';
   static const String _prefKeyFastActiveCadence =
       'fast_location_active_cadence_seconds';
+  static const String _prefKeyFastChannelIdx = 'fast_location_channel_idx';
 
   String _scopedKey(String baseKey) {
     return ProfileStorageScope.scopedKey(baseKey);
@@ -74,10 +83,15 @@ class LocationTrackingService {
   bool fastLocationUpdatesEnabled = false;
 
   /// Distance threshold for fast GPS updates
-  double fastLocationMovementThresholdMeters = 10.0;
+  double fastLocationMovementThresholdMeters =
+      _defaultFastLocationMovementThresholdMeters;
 
   /// Cadence for active-use fast GPS updates
-  int fastLocationActiveCadenceSeconds = 10;
+  int fastLocationActiveCadenceSeconds =
+      _defaultFastLocationActiveCadenceSeconds;
+
+  /// Target channel index for fast GPS updates; null means disabled/unset.
+  int? fastLocationChannelIdx;
 
   // ============================================================================
   // State Properties
@@ -518,18 +532,30 @@ class LocationTrackingService {
   }
 
   Future<void> updateFastLocationMovementThreshold(double meters) async {
-    fastLocationMovementThresholdMeters = meters.clamp(1.0, 1000.0);
+    fastLocationMovementThresholdMeters = meters.clamp(
+      _minFastLocationMovementThresholdMeters,
+      1000.0,
+    );
     await saveSettings();
   }
 
   Future<void> updateFastLocationActiveCadenceSeconds(int seconds) async {
-    fastLocationActiveCadenceSeconds = seconds.clamp(5, 60);
+    fastLocationActiveCadenceSeconds = seconds.clamp(
+      _minFastLocationActiveCadenceSeconds,
+      _maxFastLocationActiveCadenceSeconds,
+    );
+    await saveSettings();
+    _refreshFastLocationTimer();
+  }
+
+  Future<void> updateFastLocationChannelIdx(int? channelIdx) async {
+    fastLocationChannelIdx = channelIdx;
     await saveSettings();
     _refreshFastLocationTimer();
   }
 
   void _evaluateFastLocationMovement(Position position) {
-    if (!fastLocationUpdatesEnabled) return;
+    if (!fastLocationUpdatesEnabled || fastLocationChannelIdx == null) return;
     final previous = _lastFastLocationSentPosition;
     if (previous == null) {
       _emitFastLocationUpdate(position, reason: 'initial');
@@ -552,6 +578,7 @@ class LocationTrackingService {
     _fastLocationTimer = null;
     if (!isTracking ||
         !fastLocationUpdatesEnabled ||
+        fastLocationChannelIdx == null ||
         !_isFastLocationActiveUse) {
       return;
     }
@@ -567,11 +594,16 @@ class LocationTrackingService {
   }
 
   void _emitFastLocationUpdate(Position position, {required String reason}) {
-    if (!fastLocationUpdatesEnabled) return;
+    if (!fastLocationUpdatesEnabled || fastLocationChannelIdx == null) return;
 
     final now = DateTime.now();
     final previous = _lastFastLocationSentPosition;
     final previousTime = _lastFastLocationSentAt;
+    if (previousTime != null &&
+        now.difference(previousTime) < _fastLocationMinimumUpdateInterval) {
+      return;
+    }
+
     if (previous != null && previousTime != null) {
       final distance = Geolocator.distanceBetween(
         previous.latitude,
@@ -662,13 +694,16 @@ class LocationTrackingService {
         prefs.getBool(_scopedKey(_prefKeyFastLocationEnabled)) ?? false;
     fastLocationMovementThresholdMeters =
         (prefs.getDouble(_scopedKey(_prefKeyFastMovementThreshold)) ??
-                gpsUpdateDistance)
-            .clamp(1.0, 1000.0);
+                _defaultFastLocationMovementThresholdMeters)
+            .clamp(_minFastLocationMovementThresholdMeters, 1000.0);
     fastLocationActiveCadenceSeconds =
-        (prefs.getInt(_scopedKey(_prefKeyFastActiveCadence)) ?? 10).clamp(
-          5,
-          60,
+        (prefs.getInt(_scopedKey(_prefKeyFastActiveCadence)) ??
+                _defaultFastLocationActiveCadenceSeconds)
+            .clamp(
+          _minFastLocationActiveCadenceSeconds,
+          _maxFastLocationActiveCadenceSeconds,
         );
+    fastLocationChannelIdx = prefs.getInt(_scopedKey(_prefKeyFastChannelIdx));
 
     debugPrint('✅ [LocationTracking] Settings loaded');
     debugPrint('    Min distance: ${minDistanceMeters}m');
@@ -680,6 +715,7 @@ class LocationTrackingService {
       '    Fast movement threshold: ${fastLocationMovementThresholdMeters}m',
     );
     debugPrint('    Fast active cadence: ${fastLocationActiveCadenceSeconds}s');
+    debugPrint('    Fast channel idx: ${fastLocationChannelIdx ?? "unset"}');
   }
 
   /// Save settings to SharedPreferences
@@ -709,6 +745,12 @@ class LocationTrackingService {
       _scopedKey(_prefKeyFastActiveCadence),
       fastLocationActiveCadenceSeconds,
     );
+    final channelKey = _scopedKey(_prefKeyFastChannelIdx);
+    if (fastLocationChannelIdx == null) {
+      await prefs.remove(channelKey);
+    } else {
+      await prefs.setInt(channelKey, fastLocationChannelIdx!);
+    }
 
     debugPrint('✅ [LocationTracking] Settings saved');
   }

lib/services/message_destination_preferences.dart

@@ -5,6 +5,12 @@ import 'package:shared_preferences/shared_preferences.dart';
 class MessageDestinationPreferences {
   static const String _destinationTypeKey = 'message_destination_type';
   static const String _recipientPublicKeyKey = 'message_recipient_public_key';
+  static const String _lockedDestinationEnabledKey =
+      'message_locked_destination_enabled';
+  static const String _lockedDestinationTypeKey =
+      'message_locked_destination_type';
+  static const String _lockedRecipientPublicKeyKey =
+      'message_locked_recipient_public_key';
 
   /// Destination types
   static const String destinationTypeAll = 'all';
@@ -12,6 +18,10 @@ class MessageDestinationPreferences {
   static const String destinationTypeContact = 'contact';
   static const String destinationTypeRoom = 'room';
 
+  static bool isLockableDestinationType(String type) {
+    return type == destinationTypeChannel || type == destinationTypeRoom;
+  }
+
   /// Get the saved destination configuration
   /// Returns a map with 'type' and optional 'publicKey'
   /// Returns null if no preference is saved (defaults to public channel)
@@ -53,6 +63,53 @@ class MessageDestinationPreferences {
     await prefs.remove(_recipientPublicKeyKey);
   }
 
+  /// Get the saved locked destination configuration.
+  /// Returns null when the lock is disabled.
+  static Future<Map<String, String>?> getLockedDestination() async {
+    final prefs = await SharedPreferences.getInstance();
+    final isEnabled = prefs.getBool(_lockedDestinationEnabledKey) ?? false;
+
+    if (!isEnabled) {
+      return null;
+    }
+
+    final savedType =
+        prefs.getString(_lockedDestinationTypeKey) ?? destinationTypeChannel;
+    final type = isLockableDestinationType(savedType)
+        ? savedType
+        : destinationTypeChannel;
+    final publicKey = prefs.getString(_lockedRecipientPublicKeyKey);
+
+    return {'type': type, 'publicKey': ?publicKey};
+  }
+
+  static Future<void> setLockedDestination({
+    required bool enabled,
+    String type = destinationTypeChannel,
+    String? recipientPublicKey,
+  }) async {
+    final prefs = await SharedPreferences.getInstance();
+
+    await prefs.setBool(_lockedDestinationEnabledKey, enabled);
+
+    if (!enabled) {
+      await prefs.remove(_lockedDestinationTypeKey);
+      await prefs.remove(_lockedRecipientPublicKeyKey);
+      return;
+    }
+
+    final sanitizedType = isLockableDestinationType(type)
+        ? type
+        : destinationTypeChannel;
+    await prefs.setString(_lockedDestinationTypeKey, sanitizedType);
+
+    if (recipientPublicKey != null) {
+      await prefs.setString(_lockedRecipientPublicKeyKey, recipientPublicKey);
+    } else {
+      await prefs.remove(_lockedRecipientPublicKeyKey);
+    }
+  }
+
   /// Get display name for destination type
   static String getDestinationTypeName(String type) {
     switch (type) {

lib/services/message_storage_service.dart

@@ -58,10 +58,7 @@ class MessageStorageService {
           : jsonList;
 
       final jsonString = jsonEncode(limitedList);
-      await prefs.setString(
-        _key(_messagesKey, namespace: namespace),
-        jsonString,
-      );
+      final messagesKey = _key(_messagesKey, namespace: namespace);
       final retainedMessageIds = limitedList
           .map((entry) => entry['id'] as String)
           .toSet();
@@ -89,22 +86,41 @@ class MessageStorageService {
           routeMetadataJson[entry.key] = entry.value.toJson();
         }
       }
-      await prefs.setString(
-        _key(_messageContactLocationsKey, namespace: namespace),
-        jsonEncode(locationJson),
+      final contactLocationsKey = _key(
+        _messageContactLocationsKey,
+        namespace: namespace,
       );
-      await prefs.setString(
-        _key(_messageReceptionDetailsKey, namespace: namespace),
-        jsonEncode(receptionJson),
+      final receptionDetailsKey = _key(
+        _messageReceptionDetailsKey,
+        namespace: namespace,
       );
-      await prefs.setString(
-        _key(_messageTransferDetailsKey, namespace: namespace),
-        jsonEncode(transferJson),
+      final transferDetailsKey = _key(
+        _messageTransferDetailsKey,
+        namespace: namespace,
       );
-      await prefs.setString(
-        _key(_messageRouteMetadataKey, namespace: namespace),
-        jsonEncode(routeMetadataJson),
+      final routeMetadataKey = _key(
+        _messageRouteMetadataKey,
+        namespace: namespace,
       );
+      final locationJsonString = jsonEncode(locationJson);
+      final receptionJsonString = jsonEncode(receptionJson);
+      final transferJsonString = jsonEncode(transferJson);
+      final routeMetadataJsonString = jsonEncode(routeMetadataJson);
+      final hasChanges =
+          prefs.getString(messagesKey) != jsonString ||
+          prefs.getString(contactLocationsKey) != locationJsonString ||
+          prefs.getString(receptionDetailsKey) != receptionJsonString ||
+          prefs.getString(transferDetailsKey) != transferJsonString ||
+          prefs.getString(routeMetadataKey) != routeMetadataJsonString;
+      if (!hasChanges) {
+        return;
+      }
+
+      await prefs.setString(messagesKey, jsonString);
+      await prefs.setString(contactLocationsKey, locationJsonString);
+      await prefs.setString(receptionDetailsKey, receptionJsonString);
+      await prefs.setString(transferDetailsKey, transferJsonString);
+      await prefs.setString(routeMetadataKey, routeMetadataJsonString);
 
       debugPrint(
         '✅ [MessageStorage] Saved ${limitedList.length} messages to storage',

lib/services/path_history_service.dart

@@ -1,6 +1,7 @@
 import 'dart:convert';
 
 import 'package:flutter/foundation.dart';
+import 'package:geolocator/geolocator.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 import '../models/contact.dart';
@@ -9,7 +10,7 @@ import '../models/path_selection.dart';
 import '../utils/log_rx_route_decoder.dart';
 
 class PathHistoryService {
-  static const String _storageKey = 'contact_path_history_v1';
+  static const String _storageKey = 'contact_path_history_v2';
   static const int _maxDirectPaths = 20;
   static const int _topRotationCount = 3;
 
@@ -59,6 +60,11 @@ class PathHistoryService {
       failureCount: existing?.failureCount ?? 0,
       lastRoundTripTimeMs: existing?.lastRoundTripTimeMs ?? 0,
       lastUsedAt: DateTime.now(),
+      lastSucceededAt: existing?.lastSucceededAt,
+      senderLatitude: existing?.senderLatitude,
+      senderLongitude: existing?.senderLongitude,
+      recipientLatitude: existing?.recipientLatitude,
+      recipientLongitude: existing?.recipientLongitude,
     );
 
     await _saveHistory(
@@ -104,6 +110,11 @@ class PathHistoryService {
       failureCount: existing?.failureCount ?? 0,
       lastRoundTripTimeMs: existing?.lastRoundTripTimeMs ?? 0,
       lastUsedAt: DateTime.now(),
+      lastSucceededAt: existing?.lastSucceededAt,
+      senderLatitude: existing?.senderLatitude,
+      senderLongitude: existing?.senderLongitude,
+      recipientLatitude: existing?.recipientLatitude,
+      recipientLongitude: existing?.recipientLongitude,
     );
 
     await _saveHistory(
@@ -172,6 +183,10 @@ class PathHistoryService {
     PathSelection selection, {
     required bool success,
     int? roundTripTimeMs,
+    double? senderLatitude,
+    double? senderLongitude,
+    double? recipientLatitude,
+    double? recipientLongitude,
   }) async {
     await initialize();
     final history = _historyFor(contactPublicKeyHex);
@@ -206,6 +221,13 @@ class PathHistoryService {
           ? (roundTripTimeMs ?? existing?.lastRoundTripTimeMs ?? 0)
           : (existing?.lastRoundTripTimeMs ?? 0),
       lastUsedAt: DateTime.now(),
+      lastSucceededAt: success ? DateTime.now() : existing?.lastSucceededAt,
+      senderLatitude: success ? senderLatitude : existing?.senderLatitude,
+      senderLongitude: success ? senderLongitude : existing?.senderLongitude,
+      recipientLatitude:
+          success ? recipientLatitude : existing?.recipientLatitude,
+      recipientLongitude:
+          success ? recipientLongitude : existing?.recipientLongitude,
     );
     await _saveHistory(
       contactPublicKeyHex,
@@ -215,11 +237,70 @@ class PathHistoryService {
     );
   }
 
+  Future<PathSelection?> getLastSuccessfulDirectSelection(
+    Contact contact, {
+    String? excludeSignature,
+    double? senderLatitude,
+    double? senderLongitude,
+    double? recipientLatitude,
+    double? recipientLongitude,
+  }) async {
+    await initialize();
+    final history = _historyFor(contact.publicKeyHex);
+    final ranked = history.directPaths
+        .where(
+          (record) =>
+              record.successCount > 0 &&
+              record.lastSucceededAt != null &&
+              record.signature != excludeSignature,
+        )
+        .toList()
+      ..sort((a, b) {
+        final locationCompare = _compareLocationFit(
+          a,
+          b,
+          senderLatitude: senderLatitude,
+          senderLongitude: senderLongitude,
+          recipientLatitude: recipientLatitude,
+          recipientLongitude: recipientLongitude,
+        );
+        if (locationCompare != 0) return locationCompare;
+        final succeededCompare = b.lastSucceededAt!.compareTo(
+          a.lastSucceededAt!,
+        );
+        if (succeededCompare != 0) return succeededCompare;
+        return _comparePathRecords(a, b);
+      });
+
+    if (ranked.isEmpty) {
+      return null;
+    }
+
+    final record = ranked.first;
+    return PathSelection(
+      mode: PathSelectionMode.directHistorical,
+      pathBytes: Uint8List.fromList(record.pathBytes),
+      hopCount: record.hopCount,
+      hashSize: record.hashSize,
+    );
+  }
+
   ContactPathHistory historyFor(String contactPublicKeyHex) {
     return _cache[contactPublicKeyHex] ??
         ContactPathHistory.empty(contactPublicKeyHex);
   }
 
+  Future<void> clearHistoryFor(String contactPublicKeyHex) async {
+    await initialize();
+    _cache.remove(contactPublicKeyHex);
+    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));
+  }
+
   ContactPathHistory _historyFor(String contactPublicKeyHex) {
     return _cache.putIfAbsent(
       contactPublicKeyHex,
@@ -279,4 +360,68 @@ class PathHistoryService {
 
   String _signature(Uint8List bytes) =>
       bytes.map((byte) => byte.toRadixString(16).padLeft(2, '0')).join();
+
+  int _compareLocationFit(
+    PathRecord a,
+    PathRecord b, {
+    required double? senderLatitude,
+    required double? senderLongitude,
+    required double? recipientLatitude,
+    required double? recipientLongitude,
+  }) {
+    final aDistance = _locationDistanceScore(
+      a,
+      senderLatitude: senderLatitude,
+      senderLongitude: senderLongitude,
+      recipientLatitude: recipientLatitude,
+      recipientLongitude: recipientLongitude,
+    );
+    final bDistance = _locationDistanceScore(
+      b,
+      senderLatitude: senderLatitude,
+      senderLongitude: senderLongitude,
+      recipientLatitude: recipientLatitude,
+      recipientLongitude: recipientLongitude,
+    );
+    return aDistance.compareTo(bDistance);
+  }
+
+  double _locationDistanceScore(
+    PathRecord record, {
+    required double? senderLatitude,
+    required double? senderLongitude,
+    required double? recipientLatitude,
+    required double? recipientLongitude,
+  }) {
+    var total = 0.0;
+    var matched = false;
+
+    if (senderLatitude != null &&
+        senderLongitude != null &&
+        record.senderLatitude != null &&
+        record.senderLongitude != null) {
+      matched = true;
+      total += Geolocator.distanceBetween(
+        senderLatitude,
+        senderLongitude,
+        record.senderLatitude!,
+        record.senderLongitude!,
+      );
+    }
+
+    if (recipientLatitude != null &&
+        recipientLongitude != null &&
+        record.recipientLatitude != null &&
+        record.recipientLongitude != null) {
+      matched = true;
+      total += Geolocator.distanceBetween(
+        recipientLatitude,
+        recipientLongitude,
+        record.recipientLatitude!,
+        record.recipientLongitude!,
+      );
+    }
+
+    return matched ? total : double.infinity;
+  }
 }

lib/services/region_scope_preferences.dart

@@ -0,0 +1,86 @@
+import 'dart:convert';
+import 'dart:typed_data';
+import 'package:crypto/crypto.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'profiles_feature_service.dart';
+
+/// Stores per-channel region scope settings.
+///
+/// Each channel can optionally have a region scope assigned. When set, the app
+/// will set the flood scope on the device before sending channel messages so
+/// that repeaters outside the region won't forward them.
+class RegionScopePreferences {
+  static const String _namePrefix = 'region_scope_name_';
+  static const String _keyPrefix = 'region_scope_key_';
+
+  /// Get the saved scope for a channel.
+  /// Returns null if no scope is set.
+  static Future<({String name, Uint8List key})?> getScope(
+    int channelIdx,
+  ) async {
+    final prefs = await SharedPreferences.getInstance();
+    final name = prefs.getString(
+      ProfileStorageScope.scopedKey('$_namePrefix$channelIdx'),
+    );
+    final keyBase64 = prefs.getString(
+      ProfileStorageScope.scopedKey('$_keyPrefix$channelIdx'),
+    );
+    if (name == null || keyBase64 == null) return null;
+    try {
+      return (name: name, key: Uint8List.fromList(base64.decode(keyBase64)));
+    } catch (_) {
+      return null;
+    }
+  }
+
+  /// Save a region scope for a channel.
+  static Future<void> setScope(
+    int channelIdx,
+    String name,
+    Uint8List key,
+  ) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(
+      ProfileStorageScope.scopedKey('$_namePrefix$channelIdx'),
+      name,
+    );
+    await prefs.setString(
+      ProfileStorageScope.scopedKey('$_keyPrefix$channelIdx'),
+      base64.encode(key),
+    );
+  }
+
+  /// Clear the region scope for a channel.
+  static Future<void> clearScope(int channelIdx) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(
+      ProfileStorageScope.scopedKey('$_namePrefix$channelIdx'),
+    );
+    await prefs.remove(
+      ProfileStorageScope.scopedKey('$_keyPrefix$channelIdx'),
+    );
+  }
+
+  /// Clear all region scopes (all channels).
+  static Future<void> clearAllScopes() async {
+    final prefs = await SharedPreferences.getInstance();
+    final keys = prefs.getKeys();
+    for (final key in keys) {
+      if (key.contains(_namePrefix) || key.contains(_keyPrefix)) {
+        await prefs.remove(key);
+      }
+    }
+  }
+
+  /// Derive the 16-byte transport key for a region name.
+  ///
+  /// Matches firmware `TransportKeyStore::getAutoKeyFor`:
+  /// `SHA256("#regionname")` → first 16 bytes.
+  /// The name must include the leading `#` (auto-prepended if missing).
+  static Uint8List deriveRegionKey(String regionName) {
+    final normalized =
+        regionName.startsWith('#') ? regionName : '#$regionName';
+    final digest = sha256.convert(utf8.encode(normalized));
+    return Uint8List.fromList(digest.bytes.sublist(0, 16));
+  }
+}

lib/widgets/connection_dialog.dart

@@ -4,10 +4,14 @@ import 'package:provider/provider.dart';
 import '../l10n/app_localizations.dart';
 import '../providers/app_provider.dart';
 import '../providers/connection_provider.dart';
+import '../providers/contacts_provider.dart';
+import '../screens/discovery_screen.dart';
 import '../services/network_scanner_service.dart';
 import '../services/profile_workspace_coordinator.dart';
 import '../services/serial/serial_transport.dart';
 
+enum _ConnectionDialogResult { connected }
+
 Future<void> _initializeConnectedWorkspace({
   required ProfileWorkspaceCoordinator profileWorkspaceCoordinator,
   required AppProvider appProvider,
@@ -16,6 +20,103 @@ Future<void> _initializeConnectedWorkspace({
   await appProvider.initialize();
 }
 
+String _normalizeConnectionError(Object error) {
+  var message = error.toString();
+  if (message.startsWith('Exception: ')) {
+    message = message.substring('Exception: '.length);
+  }
+  if (message.startsWith('Connection failed: Exception: ')) {
+    return message.substring('Connection failed: Exception: '.length);
+  }
+  if (message.startsWith('Connection failed: ')) {
+    return message.substring('Connection failed: '.length);
+  }
+  return message;
+}
+
+void _showConnectionErrorSnackBar(BuildContext context, Object error) {
+  ScaffoldMessenger.of(context).showSnackBar(
+    SnackBar(
+      content: Text(_normalizeConnectionError(error)),
+      backgroundColor: Colors.red,
+      duration: const Duration(seconds: 5),
+    ),
+  );
+}
+
+Future<bool> showConnectionDialogFlow(
+  BuildContext context, {
+  Color? backgroundColor,
+  bool offerPostConnectRepeaterDiscovery = false,
+}) async {
+  final result = await showModalBottomSheet<_ConnectionDialogResult>(
+    context: context,
+    isScrollControlled: true,
+    backgroundColor: backgroundColor,
+    builder: (context) => const ConnectionDialog(),
+  );
+
+  if (result != _ConnectionDialogResult.connected || !context.mounted) {
+    return result == _ConnectionDialogResult.connected;
+  }
+
+  try {
+    await _initializeConnectedWorkspace(
+      profileWorkspaceCoordinator: context.read<ProfileWorkspaceCoordinator>(),
+      appProvider: context.read<AppProvider>(),
+    );
+  } catch (error) {
+    if (context.mounted) {
+      _showConnectionErrorSnackBar(context, error);
+    }
+  }
+
+  if (!context.mounted) {
+    return true;
+  }
+
+  if (!offerPostConnectRepeaterDiscovery) {
+    return true;
+  }
+
+  final contactsProvider = context.read<ContactsProvider>();
+  if (contactsProvider.repeaters.isNotEmpty) {
+    return true;
+  }
+
+  final l10n = AppLocalizations.of(context)!;
+  final openDiscovery = await showDialog<bool>(
+    context: context,
+    builder: (dialogContext) => AlertDialog(
+      title: Text(l10n.postConnectDiscoveryTitle),
+      content: Text(l10n.postConnectDiscoveryDescription),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.of(dialogContext).pop(false),
+          child: Text(l10n.continue_),
+        ),
+        FilledButton.icon(
+          onPressed: () => Navigator.of(dialogContext).pop(true),
+          icon: const Icon(Icons.router_outlined),
+          label: Text(l10n.discoverRepeaters),
+        ),
+      ],
+    ),
+  );
+
+  if (openDiscovery != true || !context.mounted) {
+    return true;
+  }
+
+  await Navigator.of(context).push(
+    MaterialPageRoute(
+      builder: (context) =>
+          const DiscoveryScreen(autoDiscoverRepeatersOnOpen: true),
+    ),
+  );
+  return true;
+}
+
 /// Connection Dialog with tabs for BLE devices and Network servers
 class ConnectionDialog extends StatefulWidget {
   const ConnectionDialog({super.key});
@@ -33,6 +134,7 @@ class _ConnectionDialogState extends State<ConnectionDialog>
   int _scannedCount = 0;
   int _totalToScan = 0;
   int _lastTabIndex = 0;
+  bool _hasRequestedBleScan = false;
   String? _connectingToServerKey;
   String? _connectingBleDeviceId;
 
@@ -40,10 +142,6 @@ class _ConnectionDialogState extends State<ConnectionDialog>
     if (_tabController.index == _lastTabIndex) return;
     _lastTabIndex = _tabController.index;
 
-    if (_tabController.index == 0) {
-      _refreshBleDevices();
-    }
-
     if (_tabController.index == 1) {
       if (_networkScanner.hasCachedResults && _discoveredServers.isEmpty) {
         setState(() {
@@ -65,11 +163,6 @@ class _ConnectionDialogState extends State<ConnectionDialog>
       listen: false,
     );
 
-    WidgetsBinding.instance.addPostFrameCallback((_) {
-      if (!mounted) return;
-      _refreshBleDevices();
-    });
-
     _networkScanner.onServerDiscovered = (server) {
       if (!mounted) return;
       setState(() {
@@ -110,6 +203,13 @@ class _ConnectionDialogState extends State<ConnectionDialog>
   }
 
   Future<void> _refreshBleDevices() async {
+    if (!_hasRequestedBleScan && mounted) {
+      setState(() {
+        _hasRequestedBleScan = true;
+      });
+    } else {
+      _hasRequestedBleScan = true;
+    }
     await _connectionProvider.stopScan();
     if (!mounted) return;
     await _connectionProvider.startScan();
@@ -121,6 +221,16 @@ class _ConnectionDialogState extends State<ConnectionDialog>
     return Colors.red;
   }
 
+  void _closeOnSuccessfulConnection() {
+    if (!mounted) return;
+    Navigator.of(context).pop(_ConnectionDialogResult.connected);
+  }
+
+  void _showConnectionError(Object error) {
+    if (!mounted) return;
+    _showConnectionErrorSnackBar(context, error);
+  }
+
   @override
   Widget build(BuildContext context) {
     final connectionProvider = context.watch<ConnectionProvider>();
@@ -401,11 +511,13 @@ class _ConnectionDialogState extends State<ConnectionDialog>
   }
 
   Widget _buildBleDevicesTab(ConnectionProvider connectionProvider) {
+    final l10n = AppLocalizations.of(context)!;
+
     return Column(
       children: [
         _buildSectionBanner(
           icon: Icons.bluetooth_searching_rounded,
-          message: AppLocalizations.of(context)!.defaultPinInfo,
+          message: l10n.defaultPinInfo,
           onRefresh: _refreshBleDevices,
         ),
         if (connectionProvider.error != null)
@@ -418,8 +530,10 @@ class _ConnectionDialogState extends State<ConnectionDialog>
               : connectionProvider.scannedDevices.isEmpty
               ? _buildEmptyState(
                   icon: Icons.bluetooth_searching_rounded,
-                  title: AppLocalizations.of(context)!.noDevicesFound,
-                  actionLabel: AppLocalizations.of(context)!.scanAgain,
+                  title: _hasRequestedBleScan
+                      ? l10n.noDevicesFound
+                      : 'Press scan to search for nearby devices',
+                  actionLabel: _hasRequestedBleScan ? l10n.scanAgain : 'Scan',
                   onAction: _refreshBleDevices,
                 )
               : ListView.builder(
@@ -434,25 +548,25 @@ class _ConnectionDialogState extends State<ConnectionDialog>
                     final isConnecting = _connectingBleDeviceId == deviceId;
 
                     Future<void> connectBle() async {
-                      final appProvider = context.read<AppProvider>();
-                      final profileWorkspaceCoordinator = context
-                          .read<ProfileWorkspaceCoordinator>();
                       setState(() {
                         _connectingBleDeviceId = deviceId;
                       });
                       try {
-                        Navigator.pop(context);
                         final success = await connectionProvider.connect(
                           device,
                         );
-                        if (success &&
-                            connectionProvider.deviceInfo.isConnected) {
-                          await _initializeConnectedWorkspace(
-                            profileWorkspaceCoordinator:
-                                profileWorkspaceCoordinator,
-                            appProvider: appProvider,
+                        if (!success) {
+                          final name = device.platformName.isNotEmpty
+                              ? device.platformName
+                              : 'device';
+                          throw Exception(
+                            connectionProvider.error ??
+                                'Failed to connect to $name',
                           );
                         }
+                        _closeOnSuccessfulConnection();
+                      } catch (error) {
+                        _showConnectionError(error);
                       } finally {
                         if (mounted) {
                           setState(() {
@@ -547,11 +661,6 @@ class _ConnectionDialogState extends State<ConnectionDialog>
                     Future<void> connectServer() async {
                       final connectionProvider = context
                           .read<ConnectionProvider>();
-                      final appProvider = context.read<AppProvider>();
-                      final profileWorkspaceCoordinator = context
-                          .read<ProfileWorkspaceCoordinator>();
-                      final navigator = Navigator.of(context);
-                      final messenger = ScaffoldMessenger.of(context);
 
                       setState(() {
                         _connectingToServerKey = serverKey;
@@ -567,52 +676,23 @@ class _ConnectionDialogState extends State<ConnectionDialog>
                           );
                         }
 
-                        await connectionProvider.connectTcp(
+                        final success = await connectionProvider.connectTcp(
                           server.ipAddress,
                           server.port,
                         );
-                        await _initializeConnectedWorkspace(
-                          profileWorkspaceCoordinator:
-                              profileWorkspaceCoordinator,
-                          appProvider: appProvider,
-                        );
-
-                        if (mounted) {
-                          navigator.pop();
+                        if (!success) {
+                          throw Exception(
+                            connectionProvider.error ??
+                                'Failed to connect to ${server.ipAddress}:${server.port}',
+                          );
                         }
+                        _closeOnSuccessfulConnection();
                       } catch (e) {
                         if (!mounted) return;
                         setState(() {
                           _connectingToServerKey = null;
                         });
-
-                        var errorMessage = e.toString();
-                        if (errorMessage.startsWith('Exception: ')) {
-                          errorMessage = errorMessage.substring(
-                            'Exception: '.length,
-                          );
-                        }
-                        if (errorMessage.startsWith(
-                          'Connection failed: Exception: ',
-                        )) {
-                          errorMessage = errorMessage.substring(
-                            'Connection failed: Exception: '.length,
-                          );
-                        } else if (errorMessage.startsWith(
-                          'Connection failed: ',
-                        )) {
-                          errorMessage = errorMessage.substring(
-                            'Connection failed: '.length,
-                          );
-                        }
-
-                        messenger.showSnackBar(
-                          SnackBar(
-                            content: Text(errorMessage),
-                            backgroundColor: Colors.red,
-                            duration: const Duration(seconds: 5),
-                          ),
-                        );
+                        _showConnectionError(e);
                       }
                     }
 
@@ -679,8 +759,10 @@ class _ConnectionDialogState extends State<ConnectionDialog>
             actionLabel: actionLabel,
             onAction: onAction,
           ),
-      onConnected: () {
-        if (mounted) Navigator.of(context).pop();
+      onConnected: (result) {
+        if (mounted) {
+          Navigator.of(context).pop(result);
+        }
       },
     );
   }
@@ -706,7 +788,7 @@ typedef _EmptyStateBuilder =
     });
 
 class _SerialDeviceList extends StatefulWidget {
-  final VoidCallback onConnected;
+  final ValueChanged<_ConnectionDialogResult> onConnected;
   final _TransportCardBuilder buildTransportCard;
   final _EmptyStateBuilder buildEmptyState;
 
@@ -801,9 +883,6 @@ class _SerialDeviceListState extends State<_SerialDeviceList> {
     setState(() => _isConnecting = true);
     try {
       final connectionProvider = context.read<ConnectionProvider>();
-      final appProvider = context.read<AppProvider>();
-      final profileWorkspaceCoordinator = context
-          .read<ProfileWorkspaceCoordinator>();
       final connection = await _transport.connect(device);
       final success = await connectionProvider.connectSerial(
         service: connection.service,
@@ -814,11 +893,7 @@ class _SerialDeviceListState extends State<_SerialDeviceList> {
       if (!mounted) return;
 
       if (success) {
-        await _initializeConnectedWorkspace(
-          profileWorkspaceCoordinator: profileWorkspaceCoordinator,
-          appProvider: appProvider,
-        );
-        widget.onConnected();
+        widget.onConnected(_ConnectionDialogResult.connected);
       } else {
         await connection.disconnect();
         connection.service.dispose();

lib/widgets/contacts/contact_route_dialog.dart

@@ -10,7 +10,6 @@ import '../../models/path_history.dart';
 import '../../l10n/app_localizations.dart';
 import '../../providers/app_provider.dart';
 import '../../providers/connection_provider.dart';
-import '../../services/contact_route_resolver.dart';
 import '../../services/path_history_service.dart';
 import '../../services/relay_candidate_sorter.dart';
 import '../../services/route_hash_preferences.dart';
@@ -80,7 +79,6 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
   ParsedContactRoute? _parsedRoute;
   String? _errorText;
   bool _showRoutingInfo = false;
-  bool _showManualEditor = false;
   List<Contact> _selectedMapHops = const [];
   ContactPathHistory? _pathHistory;
 
@@ -92,7 +90,6 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
     );
     _relaySearchController = TextEditingController();
     _controller.addListener(_reparse);
-    _showManualEditor = widget.contact.routeCanonicalText.isNotEmpty;
     _loadHashSizePreference();
     _loadPathHistory();
     _reparse();
@@ -240,19 +237,6 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
     });
   }
 
-  void _applyResolvedPlan(ResolvedContactRoutePlan plan) {
-    setState(() {
-      _selectedMapHops = plan.selectedContacts;
-      _controller.text = plan.canonicalText;
-      _controller.selection = TextSelection.fromPosition(
-        TextPosition(offset: _controller.text.length),
-      );
-      _errorText = null;
-      _showManualEditor = false;
-    });
-    _reparse();
-  }
-
   void _applyHistoryRecord(PathRecord record) {
     final canonicalText = _canonicalRouteFromBytes(
       record.pathBytes,
@@ -264,7 +248,6 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
         TextPosition(offset: _controller.text.length),
       );
       _errorText = null;
-      _showManualEditor = true;
     });
     _reparse();
   }
@@ -319,39 +302,6 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
     );
   }
 
-  void _resolvePathAutomatically() {
-    final connectionProvider = context.read<ConnectionProvider>();
-    final advLat = connectionProvider.deviceInfo.advLat;
-    final advLon = connectionProvider.deviceInfo.advLon;
-    final recipientLocation = widget.contact.displayLocation;
-    if (advLat == null ||
-        advLon == null ||
-        (advLat == 0 && advLon == 0) ||
-        recipientLocation == null) {
-      setState(() {
-        _errorText =
-            'Automatic resolve needs both your advertised location and the contact location.';
-      });
-      return;
-    }
-
-    final plan = ContactRouteResolver.resolveAutomaticRoute(
-      senderLocation: LatLng(advLat / 1e6, advLon / 1e6),
-      recipient: widget.contact,
-      availableContacts: widget.availableContacts,
-      hashSize: _selectedHashSize,
-    );
-    if (plan == null) {
-      setState(() {
-        _errorText =
-            'Could not resolve a route from available repeater locations.';
-      });
-      return;
-    }
-
-    _applyResolvedPlan(plan);
-  }
-
   String _canonicalRouteFromBytes(
     List<int> pathBytes, {
     required int hashSize,
@@ -434,32 +384,32 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
 
   Widget _buildPreviewSection() {
     final previewRoute = _effectiveRoute;
+    if (previewRoute == null) {
+      return const SizedBox.shrink();
+    }
     final colorScheme = Theme.of(context).colorScheme;
     return Container(
       width: double.infinity,
-      padding: const EdgeInsets.all(14),
+      padding: const EdgeInsets.all(12),
       decoration: BoxDecoration(
         color: colorScheme.surfaceContainerHighest.withValues(alpha: 0.5),
-        borderRadius: BorderRadius.circular(16),
+        borderRadius: BorderRadius.circular(12),
         border: Border.all(color: colorScheme.outlineVariant),
       ),
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           Text(
-            previewRoute == null ? 'Route preview' : previewRoute.summary,
+            previewRoute.summary,
             style: Theme.of(context).textTheme.titleSmall,
           ),
-          const SizedBox(height: 4),
+          const SizedBox(height: 2),
           Text(
-            previewRoute == null
-                ? 'Pick relays from the list below or open manual edit if you need exact hop tokens.'
-                : '${previewRoute.byteLength} bytes • descriptor 0x${previewRoute.encodedPathLen.toRadixString(16).padLeft(2, '0').toUpperCase()}',
+            '${previewRoute.byteLength}B • 0x${previewRoute.encodedPathLen.toRadixString(16).padLeft(2, '0').toUpperCase()}',
             style: Theme.of(context).textTheme.bodySmall,
           ),
-          if (previewRoute != null &&
-              previewRoute.canonicalText.isNotEmpty) ...[
-            const SizedBox(height: 10),
+          if (previewRoute.canonicalText.isNotEmpty) ...[
+            const SizedBox(height: 8),
             SelectableText(
               previewRoute.canonicalText,
               style: Theme.of(
@@ -474,18 +424,7 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
 
   Widget _buildSelectedHopSection() {
     if (_selectedMapHops.isEmpty) {
-      return Container(
-        width: double.infinity,
-        padding: const EdgeInsets.all(14),
-        decoration: BoxDecoration(
-          borderRadius: BorderRadius.circular(16),
-          border: Border.all(color: Theme.of(context).dividerColor),
-        ),
-        child: Text(
-          'No relays selected. Save now to use a direct path, or add repeaters below.',
-          style: Theme.of(context).textTheme.bodyMedium,
-        ),
-      );
+      return const SizedBox.shrink();
     }
 
     return Column(
@@ -493,28 +432,21 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
       children: [
         Text('Selected relays', style: Theme.of(context).textTheme.titleSmall),
         const SizedBox(height: 8),
-        ..._selectedMapHops.asMap().entries.map((entry) {
-          final index = entry.key;
-          final contact = entry.value;
-          return Card(
-            margin: const EdgeInsets.only(bottom: 8),
-            child: ListTile(
-              leading: CircleAvatar(child: Text('${index + 1}')),
-              title: Text(contact.displayName),
-              subtitle: Text(
-                _tokenFor(contact, _selectedHashSize),
-                style: Theme.of(
-                  context,
-                ).textTheme.bodySmall?.copyWith(fontFamily: 'monospace'),
-              ),
-              trailing: IconButton(
-                tooltip: 'Remove relay',
-                onPressed: () => _toggleHop(contact),
-                icon: const Icon(Icons.close),
-              ),
-            ),
-          );
-        }),
+        Wrap(
+          spacing: 8,
+          runSpacing: 8,
+          children: _selectedMapHops.asMap().entries.map((entry) {
+            final index = entry.key;
+            final contact = entry.value;
+            return InputChip(
+              label: Text('${index + 1}. ${contact.displayName}'),
+              deleteIcon: const Icon(Icons.close),
+              onDeleted: () => _toggleHop(contact),
+              materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
+              visualDensity: VisualDensity.compact,
+            );
+          }).toList(),
+        ),
       ],
     );
   }
@@ -563,6 +495,12 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
             return Card(
               margin: const EdgeInsets.only(bottom: 8),
               child: ListTile(
+                dense: true,
+                visualDensity: VisualDensity.compact,
+                contentPadding: const EdgeInsets.symmetric(
+                  horizontal: 16,
+                  vertical: 4,
+                ),
                 leading: Icon(
                   isSelected
                       ? Icons.check_circle
@@ -593,41 +531,6 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
     );
   }
 
-  Widget _buildManualEditor() {
-    return ExpansionTile(
-      tilePadding: EdgeInsets.zero,
-      childrenPadding: EdgeInsets.zero,
-      initiallyExpanded: _showManualEditor,
-      onExpansionChanged: (expanded) {
-        setState(() {
-          _showManualEditor = expanded;
-        });
-      },
-      title: Text(AppLocalizations.of(context)!.manualRouteEdit),
-      subtitle: const Text(
-        'Use this when you need to paste or tweak hop tokens directly.',
-      ),
-      children: [
-        TextField(
-          controller: _controller,
-          textCapitalization: TextCapitalization.characters,
-          decoration: InputDecoration(
-            labelText: 'Route',
-            hintText: _selectedHashSize == 1
-                ? 'AA,BB,CC'
-                : _selectedHashSize == 2
-                ? 'AABB,CCDD'
-                : 'AABBCC,DDEEFF',
-            helperText:
-                'Comma-separated hops using the selected path size. Colon form like AA:BB is also accepted.',
-            errorText: _errorText,
-            border: const OutlineInputBorder(),
-          ),
-        ),
-      ],
-    );
-  }
-
   Widget _buildMapPreview({
     required List<Contact> routeCandidates,
     required List<LatLng> mapPoints,
@@ -709,15 +612,14 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
 
   Widget _buildBuilderTab({
     required List<Contact> routeCandidates,
-    required List<LatLng> mapPoints,
-    required List<LatLng> routePoints,
   }) {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
         Row(
+          crossAxisAlignment: CrossAxisAlignment.center,
           children: [
-            Text('Path Size', style: Theme.of(context).textTheme.labelLarge),
+            Text('Path size', style: Theme.of(context).textTheme.labelLarge),
             const Spacer(),
             SegmentedButton<int>(
               segments: [
@@ -734,36 +636,32 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
             ),
           ],
         ),
+        if (_errorText != null) ...[
+          const SizedBox(height: 12),
+          Text(
+            _errorText!,
+            style: TextStyle(color: Theme.of(context).colorScheme.error),
+          ),
+        ],
+        if (_selectedMapHops.isNotEmpty) ...[
+          const SizedBox(height: 12),
+          _buildSelectedHopSection(),
+        ],
         const SizedBox(height: 12),
-        Wrap(
-          spacing: 8,
-          runSpacing: 8,
-          children: [
-            FilledButton.tonalIcon(
-              onPressed: _resolvePathAutomatically,
-              icon: Icon(Icons.auto_fix_high),
-              label: Text(AppLocalizations.of(context)!.autoResolve),
-            ),
-            OutlinedButton.icon(
-              onPressed: _selectedMapHops.isEmpty
-                  ? null
-                  : () {
-                      setState(() {
-                        _selectedMapHops = const [];
-                        _syncControllerFromSelectedHops();
-                      });
-                    },
-              icon: Icon(Icons.clear_all),
-              label: Text(AppLocalizations.of(context)!.clearRelays),
-            ),
-          ],
-        ),
-        const SizedBox(height: 16),
-        _buildPreviewSection(),
-        const SizedBox(height: 16),
-        _buildSelectedHopSection(),
-        const SizedBox(height: 16),
         _buildRelayPicker(routeCandidates),
+      ],
+    );
+  }
+
+  Widget _buildInfoTab({
+    required AppProvider appProvider,
+    required List<Contact> routeCandidates,
+    required List<LatLng> mapPoints,
+    required List<LatLng> routePoints,
+  }) {
+    return ListView(
+      children: [
+        _buildPreviewSection(),
         const SizedBox(height: 16),
         _buildMapPreview(
           routeCandidates: routeCandidates,
@@ -771,7 +669,18 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
           routePoints: routePoints,
         ),
         const SizedBox(height: 16),
-        _buildManualEditor(),
+        _AutomationRoutingInfo(
+          isExpanded: _showRoutingInfo,
+          onToggle: () {
+            setState(() {
+              _showRoutingInfo = !_showRoutingInfo;
+            });
+          },
+          autoRouteRotationEnabled: appProvider.autoRouteRotationEnabled,
+          nearestRelayFallbackEnabled: appProvider.nearestRelayFallbackEnabled,
+          clearPathOnMaxRetry: appProvider.clearPathOnMaxRetry,
+        ),
+        const SizedBox(height: 24),
       ],
     );
   }
@@ -808,6 +717,24 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
+        Align(
+          alignment: Alignment.centerRight,
+          child: TextButton(
+            onPressed: () async {
+              await _pathHistoryService.clearHistoryFor(
+                widget.contact.publicKeyHex,
+              );
+              if (!mounted) return;
+              setState(() {
+                _pathHistory = _pathHistoryService.historyFor(
+                  widget.contact.publicKeyHex,
+                );
+              });
+            },
+            child: const Text('Clear history'),
+          ),
+        ),
+        const SizedBox(height: 8),
         if (observedRecord != null) ...[
           _buildHistoryRecordTile(observedRecord, title: AppLocalizations.of(context)!.observedMeshRoute),
           const SizedBox(height: 16),
@@ -877,7 +804,7 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
     ];
 
     return DefaultTabController(
-      length: 2,
+      length: 3,
       child: Scaffold(
         appBar: AppBar(
           title: Text('Set Path for ${widget.contact.displayName}'),
@@ -885,56 +812,34 @@ class _ContactRouteDialogState extends State<ContactRouteDialog> {
             tabs: [
               Tab(text: 'Build'),
               Tab(text: 'History'),
+              Tab(text: 'Info'),
             ],
           ),
         ),
         body: SafeArea(
           child: Padding(
             padding: const EdgeInsets.fromLTRB(16, 16, 16, 0),
-            child: Column(
-              crossAxisAlignment: CrossAxisAlignment.start,
+            child: TabBarView(
               children: [
-                Text(
-                  'Plan the route on its own screen, then save it once the preview looks right.',
-                  style: Theme.of(context).textTheme.bodyMedium,
+                ListView(
+                  children: [
+                    _buildBuilderTab(
+                      routeCandidates: routeCandidates,
+                    ),
+                    const SizedBox(height: 24),
+                  ],
                 ),
-                const SizedBox(height: 16),
-                Expanded(
-                  child: TabBarView(
-                    children: [
-                      ListView(
-                        children: [
-                          _buildBuilderTab(
-                            routeCandidates: routeCandidates,
-                            mapPoints: mapPoints,
-                            routePoints: routePoints,
-                          ),
-                          const SizedBox(height: 16),
-                          _AutomationRoutingInfo(
-                            isExpanded: _showRoutingInfo,
-                            onToggle: () {
-                              setState(() {
-                                _showRoutingInfo = !_showRoutingInfo;
-                              });
-                            },
-                            autoRouteRotationEnabled:
-                                appProvider.autoRouteRotationEnabled,
-                            nearestRelayFallbackEnabled:
-                                appProvider.nearestRelayFallbackEnabled,
-                            clearPathOnMaxRetry:
-                                appProvider.clearPathOnMaxRetry,
-                          ),
-                          const SizedBox(height: 24),
-                        ],
-                      ),
-                      ListView(
-                        children: [
-                          _buildHistoryTab(),
-                          const SizedBox(height: 24),
-                        ],
-                      ),
-                    ],
-                  ),
+                ListView(
+                  children: [
+                    _buildHistoryTab(),
+                    const SizedBox(height: 24),
+                  ],
+                ),
+                _buildInfoTab(
+                  appProvider: appProvider,
+                  routeCandidates: routeCandidates,
+                  mapPoints: mapPoints,
+                  routePoints: routePoints,
                 ),
               ],
             ),

lib/widgets/contacts/contact_tile.dart

@@ -11,6 +11,7 @@ import '../../providers/contacts_provider.dart';
 import '../../providers/map_provider.dart';
 import '../../providers/messages_provider.dart';
 import '../../providers/sensors_provider.dart';
+import '../../services/location_tracking_service.dart';
 import '../../services/message_destination_preferences.dart';
 import 'contact_route_dialog.dart';
 import 'contact_trace_sheet.dart';
@@ -157,6 +158,7 @@ class ContactTile extends StatelessWidget {
                       icon: Icons.folder_copy_outlined,
                       label: label,
                     ),
+                  ..._buildSignalPills(context),
                 ],
               ),
               if (location != null) ...[
@@ -324,6 +326,34 @@ class ContactTile extends StatelessWidget {
     );
   }
 
+  List<Widget> _buildSignalPills(BuildContext context) {
+    if (!contact.isRepeater && !contact.isSensor) return [];
+    final contactsProvider = context.read<ContactsProvider>();
+    final advert = contactsProvider.pendingAdvertByKey(contact.publicKey);
+    if (advert == null) return [];
+
+    final pills = <Widget>[];
+    if (advert.rxRssiDbm != null) {
+      pills.add(
+        _buildMetaPill(
+          context,
+          icon: Icons.arrow_downward_rounded,
+          label: '${advert.rxRssiDbm} dBm',
+        ),
+      );
+    }
+    if (advert.repeaterLastRssi != null) {
+      pills.add(
+        _buildMetaPill(
+          context,
+          icon: Icons.arrow_upward_rounded,
+          label: '${advert.repeaterLastRssi} dBm',
+        ),
+      );
+    }
+    return pills;
+  }
+
   Widget _buildCompactSubtitle(BuildContext context, String? distanceText) {
     final location = contact.displayLocation;
     final compactPills = <Widget>[
@@ -338,6 +368,7 @@ class ContactTile extends StatelessWidget {
           icon: Icons.location_disabled_outlined,
           label: AppLocalizations.of(context)!.noGpsData,
         ),
+      ..._buildSignalPills(context),
     ];
 
     return Padding(
@@ -499,6 +530,16 @@ class ContactTile extends StatelessWidget {
             _showNeighbours(context, contact);
           },
         ),
+      if (contact.type == ContactType.repeater ||
+          contact.type == ContactType.room)
+        _ContactSheetAction(
+          icon: Icons.network_ping,
+          label: 'Ping',
+          onTap: () async {
+            Navigator.pop(context);
+            _pingRelay(context, contact);
+          },
+        ),
       if (!contact.isPublicChannel)
         _ContactSheetAction(
           icon: Icons.edit_outlined,
@@ -634,6 +675,18 @@ class ContactTile extends StatelessWidget {
     );
   }
 
+  void _pingRelay(BuildContext context, Contact contact) {
+    showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      backgroundColor: Theme.of(context).colorScheme.surface,
+      shape: const RoundedRectangleBorder(
+        borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
+      ),
+      builder: (context) => _PingRelaySheet(contact: contact),
+    );
+  }
+
   void _showDeleteConfirmation(
     BuildContext context,
     Contact contact, {
@@ -1809,16 +1862,24 @@ class _NeighboursSheetState extends State<_NeighboursSheet> {
         final parts = trimmed.split(':');
         if (parts.length >= 3) {
           final keyHex = parts[0];
-          final timestampOrMs = int.tryParse(parts[1]);
+          final timestampOrSeconds = int.tryParse(parts[1]);
           final snrRaw = int.tryParse(parts[2]);
-          final isMs = timestampOrMs != null && timestampOrMs < 1e9;
+          final isDurationSeconds =
+              timestampOrSeconds != null && timestampOrSeconds < 1000000000;
           parsed.add(
             _Neighbour(
               publicKeyHex: keyHex,
-              lastSeenAt: !isMs && timestampOrMs != null
-                  ? DateTime.fromMillisecondsSinceEpoch(timestampOrMs * 1000)
+              lastSeenAt: !isDurationSeconds && timestampOrSeconds != null
+                  ? timestampOrSeconds >= 1000000000000
+                        ? DateTime.fromMillisecondsSinceEpoch(
+                            timestampOrSeconds,
+                          )
+                        : DateTime.fromMillisecondsSinceEpoch(
+                            timestampOrSeconds * 1000,
+                          )
                   : null,
-              lastSeenMs: isMs ? timestampOrMs : null,
+              lastSeenSeconds:
+                  isDurationSeconds ? timestampOrSeconds : null,
               snrDb: snrRaw != null ? snrRaw / 4.0 : null,
             ),
           );
@@ -1866,12 +1927,12 @@ class _NeighboursSheetState extends State<_NeighboursSheet> {
           .difference(neighbour.lastSeenAt!)
           .toLocalizedTimeAgoWithSeconds(context);
     }
-    if (neighbour.lastSeenMs != null) {
-      if (neighbour.lastSeenMs! < 1000) {
+    if (neighbour.lastSeenSeconds != null) {
+      if (neighbour.lastSeenSeconds! < 1) {
         return AppLocalizations.of(context)!.justNow;
       }
       return Duration(
-        milliseconds: neighbour.lastSeenMs!,
+        seconds: neighbour.lastSeenSeconds!,
       ).toLocalizedTimeAgoWithSeconds(context);
     }
     return AppLocalizations.of(context)!.justNow;
@@ -2265,13 +2326,13 @@ class _NeighboursSheetState extends State<_NeighboursSheet> {
 class _Neighbour {
   final String publicKeyHex;
   final DateTime? lastSeenAt;
-  final int? lastSeenMs;
+  final int? lastSeenSeconds;
   final double? snrDb;
 
   const _Neighbour({
     required this.publicKeyHex,
     this.lastSeenAt,
-    this.lastSeenMs,
+    this.lastSeenSeconds,
     this.snrDb,
   });
 }
@@ -2287,3 +2348,337 @@ class _MappedNeighbour {
     required this.location,
   });
 }
+
+/// Bottom sheet for pinging a relay/repeater with history and distance.
+class _PingRelaySheet extends StatefulWidget {
+  final Contact contact;
+
+  const _PingRelaySheet({required this.contact});
+
+  @override
+  State<_PingRelaySheet> createState() => _PingRelaySheetState();
+}
+
+class _PingEntry {
+  final RelayPingResult result;
+  final DateTime timestamp;
+  final String? distance;
+
+  const _PingEntry({
+    required this.result,
+    required this.timestamp,
+    this.distance,
+  });
+}
+
+class _PingRelaySheetState extends State<_PingRelaySheet> {
+  bool _pinging = false;
+  final List<_PingEntry> _history = [];
+
+  @override
+  void initState() {
+    super.initState();
+    _doPing();
+  }
+
+  Future<void> _doPing() async {
+    setState(() => _pinging = true);
+    final connectionProvider = context.read<ConnectionProvider>();
+    final distance = _distanceText();
+    final result = await connectionProvider.pingRelay(widget.contact);
+    if (!mounted) return;
+    setState(() {
+      _pinging = false;
+      _history.insert(
+        0,
+        _PingEntry(
+          result: result,
+          timestamp: DateTime.now(),
+          distance: distance,
+        ),
+      );
+    });
+  }
+
+  String? _distanceText() {
+    final location = widget.contact.displayLocation;
+    if (location == null) return null;
+    final currentPosition = LocationTrackingService().currentPosition;
+    if (currentPosition == null) return null;
+    final meters = Geolocator.distanceBetween(
+      currentPosition.latitude,
+      currentPosition.longitude,
+      location.latitude,
+      location.longitude,
+    );
+    if (meters < 1000) return '${meters.round()} m';
+    if (meters < 10000) return '${(meters / 1000).toStringAsFixed(2)} km';
+    return '${(meters / 1000).toStringAsFixed(1)} km';
+  }
+
+  Widget _buildPill(
+    BuildContext context, {
+    required IconData icon,
+    required String label,
+    Color? iconColor,
+  }) {
+    final colorScheme = Theme.of(context).colorScheme;
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+      decoration: BoxDecoration(
+        color: colorScheme.surfaceContainerHighest.withValues(alpha: 0.75),
+        borderRadius: BorderRadius.circular(999),
+      ),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(icon, size: 12, color: iconColor ?? colorScheme.onSurfaceVariant),
+          const SizedBox(width: 4),
+          Text(
+            label,
+            style: Theme.of(context).textTheme.labelSmall?.copyWith(
+              color: colorScheme.onSurfaceVariant,
+              fontWeight: FontWeight.w700,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildSnrPill(BuildContext context, String direction, double snrDb) {
+    final quality = linkQualityLabel(null, snrDb);
+    final color = linkQualityColor(quality);
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+      decoration: BoxDecoration(
+        color: color.withValues(alpha: 0.15),
+        borderRadius: BorderRadius.circular(999),
+      ),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(
+            direction == 'there'
+                ? Icons.arrow_upward_rounded
+                : Icons.arrow_downward_rounded,
+            size: 12,
+            color: color,
+          ),
+          const SizedBox(width: 4),
+          Text(
+            '${snrDb.toStringAsFixed(1)} dB',
+            style: Theme.of(context).textTheme.labelSmall?.copyWith(
+              color: color,
+              fontWeight: FontWeight.w700,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildResultRow(BuildContext context, _PingEntry entry, int seq) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+    final r = entry.result;
+    final age = DateTime.now().difference(entry.timestamp);
+    final timeAgo = age.toLocalizedTimeAgoWithSeconds(context);
+
+    if (!r.success) {
+      return Padding(
+        padding: const EdgeInsets.symmetric(vertical: 8),
+        child: Row(
+          children: [
+            CircleAvatar(
+              radius: 12,
+              backgroundColor: colorScheme.error.withValues(alpha: 0.15),
+              child: Text(
+                '$seq',
+                style: TextStyle(
+                  color: colorScheme.error,
+                  fontSize: 10,
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+            ),
+            const SizedBox(width: 10),
+            Text(
+              'Timeout',
+              style: theme.textTheme.bodySmall?.copyWith(
+                color: colorScheme.error,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const Spacer(),
+            Text(
+              timeAgo,
+              style: theme.textTheme.labelSmall?.copyWith(
+                color: colorScheme.onSurfaceVariant.withValues(alpha: 0.6),
+              ),
+            ),
+          ],
+        ),
+      );
+    }
+
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 6),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            children: [
+              CircleAvatar(
+                radius: 12,
+                backgroundColor: colorScheme.surfaceContainerHighest,
+                child: Text(
+                  '$seq',
+                  style: TextStyle(
+                    color: colorScheme.onSurfaceVariant,
+                    fontSize: 10,
+                    fontWeight: FontWeight.bold,
+                  ),
+                ),
+              ),
+              const SizedBox(width: 10),
+              _buildPill(
+                context,
+                icon: Icons.timer_outlined,
+                label: '${r.durationMs} ms',
+              ),
+              const SizedBox(width: 6),
+              _buildSnrPill(context, 'there', r.snrThere),
+              const SizedBox(width: 6),
+              _buildSnrPill(context, 'back', r.snrBack),
+            ],
+          ),
+          Padding(
+            padding: const EdgeInsets.only(left: 34, top: 4),
+            child: Row(
+              children: [
+                if (entry.distance != null) ...[
+                  Icon(Icons.straighten, size: 10,
+                    color: colorScheme.onSurfaceVariant.withValues(alpha: 0.5)),
+                  const SizedBox(width: 3),
+                  Text(
+                    entry.distance!,
+                    style: theme.textTheme.labelSmall?.copyWith(
+                      color: colorScheme.onSurfaceVariant.withValues(alpha: 0.6),
+                      fontSize: 10,
+                    ),
+                  ),
+                  const SizedBox(width: 8),
+                ],
+                Icon(Icons.schedule, size: 10,
+                  color: colorScheme.onSurfaceVariant.withValues(alpha: 0.5)),
+                const SizedBox(width: 3),
+                Text(
+                  timeAgo,
+                  style: theme.textTheme.labelSmall?.copyWith(
+                    color: colorScheme.onSurfaceVariant.withValues(alpha: 0.6),
+                    fontSize: 10,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+    final displayName = widget.contact.displayName;
+
+    return SafeArea(
+      child: Padding(
+        padding: const EdgeInsets.fromLTRB(16, 12, 16, 16),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Center(
+              child: Container(
+                width: 40,
+                height: 4,
+                decoration: BoxDecoration(
+                  color: theme.dividerColor,
+                  borderRadius: BorderRadius.circular(2),
+                ),
+              ),
+            ),
+            const SizedBox(height: 14),
+            Row(
+              children: [
+                Expanded(
+                  child: Text(
+                    'Ping $displayName',
+                    style: theme.textTheme.titleLarge,
+                  ),
+                ),
+                if (_history.isNotEmpty)
+                  IconButton(
+                    onPressed: () => setState(() => _history.clear()),
+                    icon: const Icon(Icons.delete_outline, size: 20),
+                    tooltip: 'Clear history',
+                    style: IconButton.styleFrom(
+                      foregroundColor: colorScheme.onSurfaceVariant,
+                    ),
+                  ),
+                FilledButton.icon(
+                  onPressed: _pinging ? null : _doPing,
+                  icon: _pinging
+                      ? SizedBox(
+                          width: 16,
+                          height: 16,
+                          child: CircularProgressIndicator(
+                            strokeWidth: 2,
+                            color: colorScheme.onPrimary,
+                          ),
+                        )
+                      : const Icon(Icons.network_ping, size: 18),
+                  label: Text(_pinging ? 'Pinging...' : 'Ping Again'),
+                ),
+              ],
+            ),
+            const SizedBox(height: 16),
+            if (_history.isEmpty && _pinging)
+              const Padding(
+                padding: EdgeInsets.symmetric(vertical: 24),
+                child: Center(child: CircularProgressIndicator()),
+              )
+            else if (_history.isEmpty)
+              Padding(
+                padding: const EdgeInsets.symmetric(vertical: 24),
+                child: Center(
+                  child: Text(
+                    'No results yet',
+                    style: theme.textTheme.bodyMedium,
+                  ),
+                ),
+              )
+            else
+              ConstrainedBox(
+                constraints: const BoxConstraints(maxHeight: 300),
+                child: ListView.separated(
+                  shrinkWrap: true,
+                  itemCount: _history.length,
+                  separatorBuilder: (_, _) =>
+                      Divider(height: 1, color: colorScheme.outlineVariant.withValues(alpha: 0.3)),
+                  itemBuilder: (context, index) {
+                    final entry = _history[index];
+                    final seq = _history.length - index;
+                    return _buildResultRow(context, entry, seq);
+                  },
+                ),
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/widgets/device/spectrum_scan_panel.dart

@@ -1,387 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:meshcore_client/meshcore_client.dart';
-import '../../l10n/app_localizations.dart';
-
-class SpectrumScanPanel extends StatelessWidget {
-  final ThemeData theme;
-  final bool scanSupported;
-  final bool isRunning;
-  final double rangeMinMhz;
-  final double rangeMaxMhz;
-  final RangeValues rangeValues;
-  final double bandwidthKhz;
-  final int? selectedFrequencyKhz;
-  final List<SpectrumScanCandidate> graphCandidates;
-  final List<SpectrumScanCandidate> selectableCandidates;
-  final ValueChanged<RangeValues> onRangeChanged;
-  final ValueChanged<int?> onCandidateChanged;
-  final VoidCallback onRunScan;
-  final VoidCallback onApplySelected;
-
-  const SpectrumScanPanel({
-    super.key,
-    required this.theme,
-    required this.scanSupported,
-    required this.isRunning,
-    required this.rangeMinMhz,
-    required this.rangeMaxMhz,
-    required this.rangeValues,
-    required this.bandwidthKhz,
-    required this.selectedFrequencyKhz,
-    required this.graphCandidates,
-    required this.selectableCandidates,
-    required this.onRangeChanged,
-    required this.onCandidateChanged,
-    required this.onRunScan,
-    required this.onApplySelected,
-  });
-
-  @override
-  Widget build(BuildContext context) {
-    return Container(
-      padding: const EdgeInsets.all(14),
-      decoration: BoxDecoration(
-        color: theme.colorScheme.surfaceContainerHighest.withValues(
-          alpha: 0.45,
-        ),
-        borderRadius: BorderRadius.circular(18),
-        border: Border.all(color: theme.colorScheme.outlineVariant),
-      ),
-      child: Column(
-        crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
-          Row(
-            children: [
-              Icon(Icons.tune, color: theme.colorScheme.primary),
-              const SizedBox(width: 10),
-              Expanded(
-                child: Text(
-                  'Power Scan',
-                  style: theme.textTheme.titleMedium?.copyWith(
-                    fontWeight: FontWeight.w700,
-                  ),
-                ),
-              ),
-              FilledButton.icon(
-                onPressed: scanSupported && !isRunning ? onRunScan : null,
-                icon: isRunning
-                    ? const SizedBox(
-                        width: 16,
-                        height: 16,
-                        child: CircularProgressIndicator(strokeWidth: 2),
-                      )
-                    : const Icon(Icons.radar),
-                label: Text(
-                  scanSupported
-                      ? (isRunning ? 'Scanning' : 'Scan')
-                      : 'Unavailable',
-                ),
-              ),
-            ],
-          ),
-          const SizedBox(height: 8),
-          Text(
-            scanSupported
-                ? 'Full range with bandwidth footprint. Firmware enforces hardware band limits and pauses the mesh while scanning.'
-                : 'Full range with bandwidth footprint. This companion does not support spectrum scan mode, so scanning is disabled.',
-            style: theme.textTheme.bodySmall?.copyWith(
-              color: theme.colorScheme.onSurfaceVariant,
-            ),
-          ),
-          const SizedBox(height: 14),
-          _FrequencyRangePreview(
-            minMhz: rangeMinMhz,
-            maxMhz: rangeMaxMhz,
-            selectedRange: rangeValues,
-            selectedBandwidthKhz: bandwidthKhz,
-            selectedFrequencyKhz: selectedFrequencyKhz,
-            candidates: graphCandidates,
-          ),
-          const SizedBox(height: 10),
-          Wrap(
-            spacing: 14,
-            runSpacing: 6,
-            children: [
-              _LegendChip(
-                color: theme.colorScheme.primary,
-                label: AppLocalizations.of(context)!.quiet,
-              ),
-              _LegendChip(
-                color: Colors.orange,
-                label: AppLocalizations.of(context)!.moderate,
-              ),
-              _LegendChip(
-                color: theme.colorScheme.error,
-                label: AppLocalizations.of(context)!.busy,
-              ),
-            ],
-          ),
-          const SizedBox(height: 10),
-          Row(
-            mainAxisAlignment: MainAxisAlignment.spaceBetween,
-            children: [
-              Text(
-                '${rangeValues.start.toStringAsFixed(3)} MHz',
-                style: theme.textTheme.labelMedium,
-              ),
-              Text(
-                '${rangeValues.end.toStringAsFixed(3)} MHz',
-                style: theme.textTheme.labelMedium,
-              ),
-            ],
-          ),
-          RangeSlider(
-            values: rangeValues,
-            min: rangeMinMhz,
-            max: rangeMaxMhz,
-            divisions: (((rangeMaxMhz - rangeMinMhz) * 20).round()).clamp(
-              1,
-              400,
-            ),
-            labels: RangeLabels(
-              rangeValues.start.toStringAsFixed(3),
-              rangeValues.end.toStringAsFixed(3),
-            ),
-            onChanged: onRangeChanged,
-          ),
-          if (selectableCandidates.isEmpty) ...[
-            const SizedBox(height: 6),
-            Container(
-              width: double.infinity,
-              padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
-              decoration: BoxDecoration(
-                color: theme.colorScheme.surfaceContainerLow,
-                borderRadius: BorderRadius.circular(12),
-                border: Border.all(color: theme.colorScheme.outlineVariant),
-              ),
-              child: Text(
-                scanSupported
-                    ? 'No scan results yet. Adjust the range and run a scan to populate candidate frequencies.'
-                    : 'Spectrum preview only. This companion can display the configured span, but cannot scan for open channels.',
-                style: theme.textTheme.bodySmall?.copyWith(
-                  color: theme.colorScheme.onSurfaceVariant,
-                ),
-              ),
-            ),
-          ] else ...[
-            const SizedBox(height: 10),
-            DropdownButtonFormField<int>(
-              initialValue: selectedFrequencyKhz,
-              isExpanded: true,
-              decoration: const InputDecoration(
-                labelText: 'Candidate frequency',
-                border: OutlineInputBorder(),
-                helperText: 'Best frequencies for the current bandwidth',
-              ),
-              items: selectableCandidates.map((candidate) {
-                return DropdownMenuItem<int>(
-                  value: candidate.centerFrequencyKhz,
-                  child: Column(
-                    crossAxisAlignment: CrossAxisAlignment.start,
-                    mainAxisSize: MainAxisSize.min,
-                    children: [
-                      Text(
-                        '${candidate.centerFrequencyMhz.toStringAsFixed(3)} MHz',
-                        overflow: TextOverflow.ellipsis,
-                      ),
-                      Text(
-                        '${candidate.occupancyPercent}% occupied  |  peak ${candidate.peakRssiDbm} dBm',
-                        style: theme.textTheme.bodySmall?.copyWith(
-                          color: theme.colorScheme.onSurfaceVariant,
-                        ),
-                        overflow: TextOverflow.ellipsis,
-                      ),
-                    ],
-                  ),
-                );
-              }).toList(),
-              selectedItemBuilder: (context) {
-                return selectableCandidates.map((candidate) {
-                  return Align(
-                    alignment: Alignment.centerLeft,
-                    child: Text(
-                      '${candidate.centerFrequencyMhz.toStringAsFixed(3)} MHz',
-                      overflow: TextOverflow.ellipsis,
-                    ),
-                  );
-                }).toList();
-              },
-              onChanged: onCandidateChanged,
-            ),
-            const SizedBox(height: 10),
-            Align(
-              alignment: Alignment.centerRight,
-              child: OutlinedButton.icon(
-                onPressed: selectedFrequencyKhz == null
-                    ? null
-                    : onApplySelected,
-                icon: Icon(Icons.north_east),
-                label: Text(AppLocalizations.of(context)!.useSelectedFrequency),
-              ),
-            ),
-          ],
-        ],
-      ),
-    );
-  }
-}
-
-class _LegendChip extends StatelessWidget {
-  final Color color;
-  final String label;
-
-  const _LegendChip({required this.color, required this.label});
-
-  @override
-  Widget build(BuildContext context) {
-    return Row(
-      mainAxisSize: MainAxisSize.min,
-      children: [
-        Container(
-          width: 10,
-          height: 10,
-          decoration: BoxDecoration(color: color, shape: BoxShape.circle),
-        ),
-        const SizedBox(width: 6),
-        Text(label, style: Theme.of(context).textTheme.labelMedium),
-      ],
-    );
-  }
-}
-
-class _FrequencyRangePreview extends StatelessWidget {
-  final double minMhz;
-  final double maxMhz;
-  final RangeValues selectedRange;
-  final double selectedBandwidthKhz;
-  final int? selectedFrequencyKhz;
-  final List<SpectrumScanCandidate> candidates;
-
-  const _FrequencyRangePreview({
-    required this.minMhz,
-    required this.maxMhz,
-    required this.selectedRange,
-    required this.selectedBandwidthKhz,
-    required this.selectedFrequencyKhz,
-    required this.candidates,
-  });
-
-  double _positionFor(double mhz) {
-    final span = maxMhz - minMhz;
-    if (span <= 0) return 0;
-    return ((mhz - minMhz) / span).clamp(0.0, 1.0);
-  }
-
-  Color _candidateColor(BuildContext context, int occupancyPercent) {
-    final scheme = Theme.of(context).colorScheme;
-    if (occupancyPercent <= 10) return scheme.primary;
-    if (occupancyPercent <= 35) return Colors.orange;
-    return scheme.error;
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final scheme = Theme.of(context).colorScheme;
-    final spanMhz = maxMhz - minMhz;
-    final selectedFreqMhz = selectedFrequencyKhz != null
-        ? selectedFrequencyKhz! / 1000.0
-        : null;
-    final bwMhz = selectedBandwidthKhz / 1000.0;
-
-    return LayoutBuilder(
-      builder: (context, constraints) {
-        final width = constraints.maxWidth;
-        final rangeLeft = _positionFor(selectedRange.start) * width;
-        final rangeRight = _positionFor(selectedRange.end) * width;
-
-        double? bwLeft;
-        double? bwWidth;
-        if (selectedFreqMhz != null && spanMhz > 0) {
-          bwLeft = _positionFor(selectedFreqMhz - (bwMhz / 2)) * width;
-          final bwRight = _positionFor(selectedFreqMhz + (bwMhz / 2)) * width;
-          bwWidth = (bwRight - bwLeft).clamp(4.0, width);
-        }
-
-        return Container(
-          height: 108,
-          decoration: BoxDecoration(
-            borderRadius: BorderRadius.circular(16),
-            color: scheme.surfaceContainerLow,
-            border: Border.all(color: scheme.outlineVariant),
-          ),
-          child: Stack(
-            children: [
-              Positioned.fill(
-                child: Padding(
-                  padding: const EdgeInsets.symmetric(
-                    horizontal: 10,
-                    vertical: 12,
-                  ),
-                  child: DecoratedBox(
-                    decoration: BoxDecoration(
-                      borderRadius: BorderRadius.circular(12),
-                      color: scheme.surfaceContainerHigh,
-                    ),
-                  ),
-                ),
-              ),
-              Positioned(
-                left: rangeLeft,
-                top: 12,
-                width: (rangeRight - rangeLeft).clamp(8.0, width),
-                height: 56,
-                child: DecoratedBox(
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.circular(12),
-                    color: scheme.primaryContainer,
-                    border: Border.all(color: scheme.primary),
-                  ),
-                ),
-              ),
-              if (bwLeft != null && bwWidth != null)
-                Positioned(
-                  left: bwLeft,
-                  top: 28,
-                  width: bwWidth,
-                  height: 24,
-                  child: DecoratedBox(
-                    decoration: BoxDecoration(
-                      borderRadius: BorderRadius.circular(999),
-                      color: scheme.tertiaryContainer,
-                      border: Border.all(color: scheme.tertiary),
-                    ),
-                  ),
-                ),
-              for (final candidate in candidates)
-                Positioned(
-                  left: (_positionFor(candidate.centerFrequencyMhz) * width)
-                      .clamp(10.0, width - 18.0),
-                  top: 72,
-                  child: Column(
-                    children: [
-                      Container(
-                        width: 10,
-                        height: 10,
-                        decoration: BoxDecoration(
-                          shape: BoxShape.circle,
-                          color: _candidateColor(
-                            context,
-                            candidate.occupancyPercent,
-                          ),
-                        ),
-                      ),
-                      const SizedBox(height: 4),
-                      Text(
-                        candidate.centerFrequencyMhz.toStringAsFixed(3),
-                        style: Theme.of(context).textTheme.labelSmall,
-                      ),
-                    ],
-                  ),
-                ),
-            ],
-          ),
-        );
-      },
-    );
-  }
-}

lib/widgets/map/detailed_compass_dialog.dart

@@ -1,9 +1,11 @@
 import 'dart:async';
 import 'dart:math';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart' show MissingPluginException;
 import 'package:geolocator/geolocator.dart';
 import 'package:flutter_compass/flutter_compass.dart';
 import 'package:latlong2/latlong.dart';
+import '../../services/compass_support.dart';
 import '../../models/contact.dart';
 import '../../models/sar_marker.dart';
 import '../common/location_display.dart';
@@ -90,17 +92,33 @@ class _DetailedCompassDialogState extends State<DetailedCompassDialog> {
       });
     }
 
-    // Subscribe to compass updates
-    final compassStream = FlutterCompass.events;
+    // Subscribe to compass updates on supported targets only.
+    final compassStream = CompassSupport.isAvailable
+        ? FlutterCompass.events
+        : null;
     if (compassStream != null) {
-      _compassSubscription = compassStream.listen((event) {
-        if (mounted && event.heading != null) {
-          setState(() {
-            _currentHeading = event.heading;
-            _compassAccuracy = event.accuracy;
-          });
-        }
-      });
+      _compassSubscription = compassStream.listen(
+        (event) {
+          if (mounted && event.heading != null) {
+            setState(() {
+              _currentHeading = event.heading;
+              _compassAccuracy = event.accuracy;
+            });
+          }
+        },
+        onError: (Object error, StackTrace stackTrace) {
+          if (!mounted) {
+            return;
+          }
+
+          if (error is MissingPluginException) {
+            debugPrint('Compass plugin is unavailable on this platform');
+            return;
+          }
+
+          debugPrint('Compass dialog stream error: $error');
+        },
+      );
     }
 
     // Subscribe to position updates

lib/widgets/messages/message_bubble.dart

@@ -12,6 +12,7 @@ import '../../models/sar_template.dart';
 import '../../models/map_drawing.dart';
 import '../../models/map_coordinate_space.dart';
 import '../../providers/messages_provider.dart';
+import '../../providers/channels_provider.dart';
 import '../../providers/contacts_provider.dart';
 import '../../providers/connection_provider.dart';
 import '../../providers/drawing_provider.dart';
@@ -1955,10 +1956,12 @@ class _MessageBubbleState extends State<MessageBubble> {
     final isSarMarker = message.isSarMarker;
     final isDarkMode = Theme.of(context).brightness == Brightness.dark;
     final messageFontScale = context.watch<AppProvider>().messageFontScale;
+    final l10n = AppLocalizations.of(context)!;
 
     // Determine if this is own message
     final connectionProvider = context.read<ConnectionProvider>();
     final messagesProvider = context.read<MessagesProvider>();
+    final channelsProvider = context.watch<ChannelsProvider>();
     final selfPublicKey = connectionProvider.deviceInfo.publicKey;
     final isOwnMessage =
         message.isSentMessage || message.isFromSelf(selfPublicKey);
@@ -2004,7 +2007,7 @@ class _MessageBubbleState extends State<MessageBubble> {
 
     // Get rich display name (with emoji if available)
     final displayName = isOwnMessage
-        ? AppLocalizations.of(context)!.you
+        ? l10n.you
         : message.getRichDisplayName(senderContact);
 
     // Look up destination/source display labels for direct/channel messages
@@ -2039,15 +2042,30 @@ class _MessageBubbleState extends State<MessageBubble> {
         }
       }
     } else if (message.isChannelMessage) {
-      if (message.channelIdx == 0) {
-        channelDisplayName = AppLocalizations.of(context)!.publicChannel;
+      final channelIdx = message.channelIdx ?? 0;
+      if (channelIdx == 0) {
+        channelDisplayName = l10n.publicChannel;
       } else {
         final channelContact = contactsProvider.channels.where((c) {
-          return c.publicKey.length > 1 && c.publicKey[1] == message.channelIdx;
+          return c.publicKey.length > 1 && c.publicKey[1] == channelIdx;
         }).firstOrNull;
+        final syncedChannel = channelsProvider.getChannel(channelIdx);
+        final syncedChannelDisplayName =
+            syncedChannel != null && syncedChannel.hasCustomName
+            ? syncedChannel.displayName
+            : null;
+        final contactChannelDisplayName = channelContact
+            ?.getLocalizedDisplayName(context)
+            .trim();
+
         channelDisplayName =
-            channelContact?.getLocalizedDisplayName(context) ??
-            '${AppLocalizations.of(context)!.channel} ${message.channelIdx}';
+            syncedChannelDisplayName ??
+            (contactChannelDisplayName != null &&
+                    contactChannelDisplayName.isNotEmpty
+                ? contactChannelDisplayName
+                : null) ??
+            syncedChannel?.displayName ??
+            '${l10n.channel} $channelIdx';
       }
 
       if (isOwnMessage) {
@@ -2057,14 +2075,14 @@ class _MessageBubbleState extends State<MessageBubble> {
 
     final recipientSubtitle =
         isOwnMessage && message.isChannelMessage && recipientDisplayName != null
-        ? '${AppLocalizations.of(context)!.channel}: $recipientDisplayName'
+        ? '${l10n.channel}: $recipientDisplayName'
         : recipientDisplayName;
     final directCounterpartLabel = !message.isChannelMessage
-        ? (isOwnMessage ? recipientSubtitle : AppLocalizations.of(context)!.you)
+        ? (isOwnMessage ? recipientSubtitle : l10n.you)
         : null;
     final receivedChannelSubtitle =
         !isOwnMessage && message.isChannelMessage && channelDisplayName != null
-        ? '${AppLocalizations.of(context)!.channel}: $channelDisplayName'
+        ? '${l10n.channel}: $channelDisplayName'
         : null;
 
     final shouldFloatBubble = widget.isCompact;

lib/widgets/messages/messages_composer.dart

@@ -19,6 +19,7 @@ class MessagesComposer extends StatelessWidget {
   final double bottomPadding;
   final String destinationLabel;
   final Widget destinationAvatar;
+  final bool destinationLocked;
   final List<Contact> mentionSuggestions;
   final String mentionQuery;
   final ValueChanged<Contact> onMentionSelected;
@@ -27,6 +28,9 @@ class MessagesComposer extends StatelessWidget {
   final Future<void> Function() onStartVoiceRecording;
   final Future<void> Function() onStopAndSendVoice;
   final Future<void> Function() onSendMessage;
+  final VoidCallback? onLongPressSend;
+  final String? regionScopeName;
+  final VoidCallback? onRegionScopeTap;
 
   const MessagesComposer({
     super.key,
@@ -41,6 +45,7 @@ class MessagesComposer extends StatelessWidget {
     required this.bottomPadding,
     required this.destinationLabel,
     required this.destinationAvatar,
+    required this.destinationLocked,
     required this.mentionSuggestions,
     required this.mentionQuery,
     required this.onMentionSelected,
@@ -49,6 +54,9 @@ class MessagesComposer extends StatelessWidget {
     required this.onStartVoiceRecording,
     required this.onStopAndSendVoice,
     required this.onSendMessage,
+    this.onLongPressSend,
+    this.regionScopeName,
+    this.onRegionScopeTap,
   });
 
   @override
@@ -102,12 +110,23 @@ class MessagesComposer extends StatelessWidget {
                                 ? onStopAndSendVoice
                                 : onShowComposerActions,
                           ),
+                          if (regionScopeName != null &&
+                              onRegionScopeTap != null) ...[
+                            const SizedBox(width: 6),
+                            _RegionScopeChip(
+                              name: regionScopeName!,
+                              onTap: onRegionScopeTap!,
+                            ),
+                          ],
                           const SizedBox(width: 8),
                           Expanded(
-                            child: _DestinationSelector(
+                            child: _DestinationPill(
                               destinationLabel: destinationLabel,
                               destinationAvatar: destinationAvatar,
-                              onTap: onShowRecipientSelector,
+                              isLocked: destinationLocked,
+                              onTap: destinationLocked
+                                  ? null
+                                  : onShowRecipientSelector,
                             ),
                           ),
                         ],
@@ -151,6 +170,7 @@ class MessagesComposer extends StatelessWidget {
                                 messageByteCount: messageByteCount,
                                 maxMessageBytes: maxMessageBytes,
                                 onSendMessage: onSendMessage,
+                                onLongPressSend: onLongPressSend,
                                 onStartVoiceRecording: onStartVoiceRecording,
                                 onStopAndSendVoice: onStopAndSendVoice,
                               ),
@@ -282,59 +302,73 @@ class _ComposerActionButton extends StatelessWidget {
   }
 }
 
-class _DestinationSelector extends StatelessWidget {
+class _DestinationPill extends StatelessWidget {
   final String destinationLabel;
   final Widget destinationAvatar;
-  final VoidCallback onTap;
+  final bool isLocked;
+  final VoidCallback? onTap;
 
-  const _DestinationSelector({
+  const _DestinationPill({
     required this.destinationLabel,
     required this.destinationAvatar,
-    required this.onTap,
+    required this.isLocked,
+    this.onTap,
   });
 
   @override
   Widget build(BuildContext context) {
+    final content = Ink(
+      key: ValueKey(
+        isLocked
+            ? 'messages_composer_destination_locked'
+            : 'messages_composer_destination_selector',
+      ),
+      height: 40,
+      decoration: BoxDecoration(
+        color: Theme.of(context).colorScheme.surface,
+        borderRadius: BorderRadius.circular(20),
+        border: Border.all(
+          color: Theme.of(context).dividerColor.withValues(alpha: 0.35),
+        ),
+      ),
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 12),
+        child: Row(
+          children: [
+            destinationAvatar,
+            const SizedBox(width: 8),
+            Expanded(
+              child: Text(
+                destinationLabel,
+                overflow: TextOverflow.ellipsis,
+                style: TextStyle(
+                  fontSize: 14,
+                  fontWeight: FontWeight.w600,
+                  color: Theme.of(context).colorScheme.onSurface,
+                ),
+              ),
+            ),
+            if (!isLocked)
+              Icon(
+                Icons.expand_more_rounded,
+                size: 18,
+                color: Theme.of(context).colorScheme.onSurfaceVariant,
+              ),
+          ],
+        ),
+      ),
+    );
+
+    if (onTap == null) {
+      return Material(color: Colors.transparent, child: content);
+    }
+
     return Material(
       color: Colors.transparent,
       child: InkWell(
         borderRadius: BorderRadius.circular(20),
         onTap: onTap,
-        child: Ink(
-          height: 40,
-          decoration: BoxDecoration(
-            color: Theme.of(context).colorScheme.surface,
-            borderRadius: BorderRadius.circular(20),
-            border: Border.all(
-              color: Theme.of(context).dividerColor.withValues(alpha: 0.35),
-            ),
-          ),
-          child: Padding(
-            padding: const EdgeInsets.symmetric(horizontal: 12),
-            child: Row(
-              children: [
-                destinationAvatar,
-                const SizedBox(width: 8),
-                Expanded(
-                  child: Text(
-                    destinationLabel,
-                    overflow: TextOverflow.ellipsis,
-                    style: TextStyle(
-                      fontSize: 14,
-                      fontWeight: FontWeight.w600,
-                      color: Theme.of(context).colorScheme.onSurface,
-                    ),
-                  ),
-                ),
-                Icon(
-                  Icons.expand_more_rounded,
-                  size: 18,
-                  color: Theme.of(context).colorScheme.onSurfaceVariant,
-                ),
-              ],
-            ),
-          ),
-        ),
+        child: content,
       ),
     );
   }
@@ -421,6 +455,7 @@ class _SendButton extends StatelessWidget {
   final int messageByteCount;
   final int maxMessageBytes;
   final Future<void> Function() onSendMessage;
+  final VoidCallback? onLongPressSend;
   final Future<void> Function() onStartVoiceRecording;
   final Future<void> Function() onStopAndSendVoice;
 
@@ -433,6 +468,7 @@ class _SendButton extends StatelessWidget {
     required this.messageByteCount,
     required this.maxMessageBytes,
     required this.onSendMessage,
+    this.onLongPressSend,
     required this.onStartVoiceRecording,
     required this.onStopAndSendVoice,
   });
@@ -444,28 +480,32 @@ class _SendButton extends StatelessWidget {
       enabled: canSendText || (voiceSupported && !isSendingVoice),
       label: semanticsLabel,
       onTap: canSendText ? onSendMessage : null,
-      onLongPress: (voiceSupported && !isSendingVoice)
-          ? () {
-              if (isRecording) {
-                onStopAndSendVoice();
-                return;
-              }
-              onStartVoiceRecording();
-            }
-          : null,
+      onLongPress: canSendText && onLongPressSend != null
+          ? onLongPressSend
+          : (voiceSupported && !isSendingVoice)
+              ? () {
+                  if (isRecording) {
+                    onStopAndSendVoice();
+                    return;
+                  }
+                  onStartVoiceRecording();
+                }
+              : null,
       child: Tooltip(
         message: semanticsLabel,
         excludeFromSemantics: true,
         child: GestureDetector(
           excludeFromSemantics: true,
           onTap: canSendText ? onSendMessage : null,
-          onLongPressStart: (voiceSupported && !isSendingVoice)
-              ? (_) => onStartVoiceRecording()
-              : null,
-          onLongPressEnd: (voiceSupported && isRecording)
+          onLongPressStart: canSendText && onLongPressSend != null
+              ? (_) => onLongPressSend!()
+              : (voiceSupported && !isSendingVoice)
+                  ? (_) => onStartVoiceRecording()
+                  : null,
+          onLongPressEnd: (!canSendText && voiceSupported && isRecording)
               ? (_) => onStopAndSendVoice()
               : null,
-          onLongPressCancel: (voiceSupported && isRecording)
+          onLongPressCancel: (!canSendText && voiceSupported && isRecording)
               ? onStopAndSendVoice
               : null,
           child: Column(
@@ -534,3 +574,52 @@ class _SendButton extends StatelessWidget {
     );
   }
 }
+
+class _RegionScopeChip extends StatelessWidget {
+  final String name;
+  final VoidCallback onTap;
+
+  const _RegionScopeChip({required this.name, required this.onTap});
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        height: 40,
+        padding: const EdgeInsets.symmetric(horizontal: 10),
+        decoration: BoxDecoration(
+          color: colorScheme.tertiaryContainer,
+          borderRadius: BorderRadius.circular(20),
+          border: Border.all(
+            color: colorScheme.tertiary.withValues(alpha: 0.3),
+          ),
+        ),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Icon(
+              Icons.language_rounded,
+              size: 16,
+              color: colorScheme.onTertiaryContainer,
+            ),
+            const SizedBox(width: 4),
+            ConstrainedBox(
+              constraints: const BoxConstraints(maxWidth: 80),
+              child: Text(
+                name,
+                style: TextStyle(
+                  fontSize: 12,
+                  fontWeight: FontWeight.w600,
+                  color: colorScheme.onTertiaryContainer,
+                ),
+                overflow: TextOverflow.ellipsis,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/widgets/messages/recipient_selector_sheet.dart

@@ -1,7 +1,10 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 
 import '../../l10n/app_localizations.dart';
 import '../../models/contact.dart';
+import '../../providers/messages_provider.dart';
+import '../../utils/avatar_label_helper.dart';
 import '../common/contact_avatar.dart';
 
 enum _RecipientSortMode { activity, favorites, alphabetical }
@@ -17,6 +20,10 @@ class RecipientSelectorSheet extends StatefulWidget {
   final String? currentRecipientPublicKey;
   final bool showAllOption;
   final Function(String type, Contact? recipient) onSelect;
+  final MessagesProvider? messagesProvider;
+
+  /// Region scope names per channel index (e.g. {0: "#auckland"}).
+  final Map<int, String> channelRegionScopes;
 
   const RecipientSelectorSheet({
     super.key,
@@ -29,6 +36,8 @@ class RecipientSelectorSheet extends StatefulWidget {
     this.currentRecipientPublicKey,
     this.showAllOption = true,
     required this.onSelect,
+    this.messagesProvider,
+    this.channelRegionScopes = const {},
   });
 
   @override
@@ -163,15 +172,162 @@ class _RecipientSelectorSheetState extends State<RecipientSelectorSheet> {
     }
   }
 
-  String _channelSubtitle(BuildContext context, Contact channel) {
-    final l10n = AppLocalizations.of(context)!;
-    if (channel.isPublicChannel) {
-      return l10n.broadcastToAllNearby;
+  MessagesProvider? _resolveMessagesProvider(BuildContext context) {
+    if (widget.messagesProvider != null) {
+      return widget.messagesProvider;
     }
 
+    try {
+      return Provider.of<MessagesProvider>(context);
+    } on ProviderNotFoundException {
+      return null;
+    }
+  }
+
+  String _formatRelativeTime(BuildContext context, DateTime when) {
+    final l10n = AppLocalizations.of(context)!;
+    final diff = DateTime.now().difference(when);
+
+    if (diff.inMinutes < 1) return l10n.justNow;
+    if (diff.inMinutes < 60) return l10n.minutesAgo(diff.inMinutes);
+    if (diff.inHours < 24) return l10n.hoursAgo(diff.inHours);
+    return l10n.daysAgo(diff.inDays);
+  }
+
+  _ChannelPreviewData _channelPreviewData(
+    BuildContext context,
+    Contact channel,
+    MessagesProvider? messagesProvider,
+  ) {
+    if (messagesProvider == null) {
+      return const _ChannelPreviewData();
+    }
+
+    final lastActivityAt = messagesProvider.getLastActivityForDestination(
+      channel,
+    );
     final channelIdx = channel.publicKey.length > 1 ? channel.publicKey[1] : 0;
-    final shortKey = channel.publicKeyShort.toUpperCase();
-    return '${l10n.channel} $channelIdx • $shortKey';
+    final channelMessages = messagesProvider.getMessagesForChannel(channelIdx)
+      ..sort((a, b) => b.sentAt.compareTo(a.sentAt));
+    final participantNames = <String>[];
+
+    for (final message in channelMessages) {
+      final senderName = message.senderName?.trim();
+      if (senderName == null || senderName.isEmpty) {
+        continue;
+      }
+      if (!participantNames.contains(senderName)) {
+        participantNames.add(senderName);
+      }
+    }
+
+    return _ChannelPreviewData(
+      activityLabel: lastActivityAt == null
+          ? null
+          : _formatRelativeTime(context, lastActivityAt),
+      participantNames: participantNames,
+    );
+  }
+
+  Contact? _findParticipantContact(String name) {
+    final normalizedName = name.trim();
+
+    for (final contact in widget.contacts) {
+      if (!contact.isChannel && contact.advName.trim() == normalizedName) {
+        return contact;
+      }
+    }
+
+    for (final contact in widget.contacts) {
+      if (!contact.isChannel && contact.displayName.trim() == normalizedName) {
+        return contact;
+      }
+    }
+
+    return null;
+  }
+
+  String _contactActivityLabel(
+    BuildContext context,
+    Contact contact,
+    MessagesProvider? messagesProvider,
+  ) {
+    final lastActivityAt =
+        messagesProvider?.getLastActivityForDestination(contact) ??
+        contact.lastSeenTime;
+
+    return _formatRelativeTime(context, lastActivityAt);
+  }
+
+  Widget _buildTextSubtitle(
+    BuildContext context,
+    Contact contact,
+    String subtitle,
+  ) {
+    final colorScheme = Theme.of(context).colorScheme;
+
+    return Text(
+      subtitle,
+      maxLines: 1,
+      overflow: TextOverflow.ellipsis,
+      style: Theme.of(context).textTheme.bodySmall?.copyWith(
+        color: colorScheme.onSurfaceVariant,
+        fontFamily: contact.isChannel ? null : 'monospace',
+      ),
+    );
+  }
+
+  Widget _buildChannelSubtitle(
+    BuildContext context,
+    Contact channel,
+    _ChannelPreviewData previewData,
+  ) {
+    final colorScheme = Theme.of(context).colorScheme;
+
+    if (previewData.participantNames.isEmpty) {
+      return Text(
+        'No recent chatters',
+        maxLines: 1,
+        overflow: TextOverflow.ellipsis,
+        style: Theme.of(
+          context,
+        ).textTheme.bodySmall?.copyWith(color: colorScheme.onSurfaceVariant),
+      );
+    }
+
+    return Row(
+      children: [
+        _ParticipantAvatarStack(
+          key: Key('channel-participants-${channel.publicKeyHex}'),
+          names: previewData.participantNames,
+          contactForName: _findParticipantContact,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildChannelRecipientCard(
+    BuildContext context,
+    Contact channel,
+    MessagesProvider? messagesProvider,
+  ) {
+    final previewData = _channelPreviewData(context, channel, messagesProvider);
+
+    return _buildRecipientCard(
+      context: context,
+      type: 'channel',
+      contact: channel,
+      title: channel.getLocalizedDisplayName(context),
+      subtitle: _buildChannelSubtitle(context, channel, previewData),
+      unreadCount: _unreadFor(channel),
+      isSelected: _isSelected('channel', channel),
+      compact: true,
+      activityLabel: previewData.activityLabel,
+      onTap: () {
+        widget.onSelect('channel', channel);
+        Navigator.pop(context);
+      },
+    );
   }
 
   bool _isDenseSection(String type) => type == 'channel' || type == 'contact';
@@ -180,6 +336,7 @@ class _RecipientSelectorSheetState extends State<RecipientSelectorSheet> {
   Widget build(BuildContext context) {
     final l10n = AppLocalizations.of(context)!;
     final colorScheme = Theme.of(context).colorScheme;
+    final messagesProvider = _resolveMessagesProvider(context);
     final filteredContacts = _filterAndSortContacts(widget.contacts);
     final filteredRooms = _filterAndSortContacts(widget.rooms);
     final filteredChannels = _filterAndSortContacts(
@@ -326,19 +483,10 @@ class _RecipientSelectorSheetState extends State<RecipientSelectorSheet> {
                     emptyLabel: l10n.noChannelsFound,
                     children: [
                       for (final channel in filteredChannels)
-                        _buildRecipientCard(
-                          context: context,
-                          type: 'channel',
-                          contact: channel,
-                          title: channel.getLocalizedDisplayName(context),
-                          subtitle: _channelSubtitle(context, channel),
-                          unreadCount: _unreadFor(channel),
-                          isSelected: _isSelected('channel', channel),
-                          compact: true,
-                          onTap: () {
-                            widget.onSelect('channel', channel);
-                            Navigator.pop(context);
-                          },
+                        _buildChannelRecipientCard(
+                          context,
+                          channel,
+                          messagesProvider,
                         ),
                     ],
                   ),
@@ -357,7 +505,11 @@ class _RecipientSelectorSheetState extends State<RecipientSelectorSheet> {
                           type: 'contact',
                           contact: contact,
                           title: contact.displayName,
-                          subtitle: contact.publicKeyShort,
+                          activityLabel: _contactActivityLabel(
+                            context,
+                            contact,
+                            messagesProvider,
+                          ),
                           unreadCount: _unreadFor(contact),
                           isSelected: _isSelected('contact', contact),
                           compact: true,
@@ -383,7 +535,11 @@ class _RecipientSelectorSheetState extends State<RecipientSelectorSheet> {
                           type: 'room',
                           contact: room,
                           title: room.displayName,
-                          subtitle: room.publicKeyShort,
+                          subtitle: _buildTextSubtitle(
+                            context,
+                            room,
+                            room.publicKeyShort,
+                          ),
                           unreadCount: _unreadFor(room),
                           isSelected: _isSelected('room', room),
                           onTap: () {
@@ -681,10 +837,11 @@ class _RecipientSelectorSheetState extends State<RecipientSelectorSheet> {
     required String type,
     required Contact contact,
     required String title,
-    required String subtitle,
+    Widget? subtitle,
     required int unreadCount,
     required bool isSelected,
     bool compact = false,
+    String? activityLabel,
     required VoidCallback onTap,
   }) {
     final colorScheme = Theme.of(context).colorScheme;
@@ -748,52 +905,70 @@ class _RecipientSelectorSheetState extends State<RecipientSelectorSheet> {
                     crossAxisAlignment: CrossAxisAlignment.start,
                     children: [
                       Row(
+                        crossAxisAlignment: CrossAxisAlignment.start,
                         children: [
-                          Flexible(
-                            child: Text(
-                              title,
-                              maxLines: 1,
-                              overflow: TextOverflow.ellipsis,
-                              style: Theme.of(context).textTheme.titleSmall
-                                  ?.copyWith(
-                                    fontWeight: FontWeight.w800,
-                                    letterSpacing: -0.2,
+                          Expanded(
+                            child: Row(
+                              children: [
+                                Flexible(
+                                  child: Text(
+                                    title,
+                                    maxLines: 1,
+                                    overflow: TextOverflow.ellipsis,
+                                    style: Theme.of(context)
+                                        .textTheme
+                                        .titleSmall
+                                        ?.copyWith(
+                                          fontWeight: FontWeight.w800,
+                                          letterSpacing: -0.2,
+                                        ),
                                   ),
+                                ),
+                                if (contact.isPublicChannel) ...[
+                                  SizedBox(width: compact ? 6 : 8),
+                                  Container(
+                                    padding: EdgeInsets.symmetric(
+                                      horizontal: compact ? 7 : 8,
+                                      vertical: compact ? 2 : 3,
+                                    ),
+                                    decoration: BoxDecoration(
+                                      color: accentColor.withValues(
+                                        alpha: 0.10,
+                                      ),
+                                      borderRadius: BorderRadius.circular(999),
+                                    ),
+                                    child: Text(
+                                      'Public',
+                                      style: Theme.of(context)
+                                          .textTheme
+                                          .labelSmall
+                                          ?.copyWith(
+                                            color: accentColor,
+                                            fontWeight: FontWeight.w800,
+                                          ),
+                                    ),
+                                  ),
+                                ],
+                              ],
                             ),
                           ),
-                          if (contact.isPublicChannel) ...[
-                            SizedBox(width: compact ? 6 : 8),
-                            Container(
-                              padding: EdgeInsets.symmetric(
-                                horizontal: compact ? 7 : 8,
-                                vertical: compact ? 2 : 3,
-                              ),
-                              decoration: BoxDecoration(
-                                color: accentColor.withValues(alpha: 0.10),
-                                borderRadius: BorderRadius.circular(999),
-                              ),
-                              child: Text(
-                                'Public',
-                                style: Theme.of(context).textTheme.labelSmall
-                                    ?.copyWith(
-                                      color: accentColor,
-                                      fontWeight: FontWeight.w800,
-                                    ),
-                              ),
+                          if (activityLabel != null) ...[
+                            SizedBox(width: compact ? 8 : 10),
+                            Text(
+                              activityLabel,
+                              style: Theme.of(context).textTheme.labelSmall
+                                  ?.copyWith(
+                                    color: colorScheme.onSurfaceVariant,
+                                    fontWeight: FontWeight.w700,
+                                  ),
                             ),
                           ],
                         ],
                       ),
-                      SizedBox(height: compact ? 2 : 4),
-                      Text(
+                      if (subtitle != null) ...[
+                        SizedBox(height: compact ? 2 : 4),
                         subtitle,
-                        maxLines: 1,
-                        overflow: TextOverflow.ellipsis,
-                        style: Theme.of(context).textTheme.bodySmall?.copyWith(
-                          color: colorScheme.onSurfaceVariant,
-                          fontFamily: contact.isChannel ? null : 'monospace',
-                        ),
-                      ),
+                      ],
                     ],
                   ),
                 ),
@@ -849,3 +1024,140 @@ class _RecipientSelectorSheetState extends State<RecipientSelectorSheet> {
     );
   }
 }
+
+class _ChannelPreviewData {
+  final String? activityLabel;
+  final List<String> participantNames;
+
+  const _ChannelPreviewData({
+    this.activityLabel,
+    this.participantNames = const <String>[],
+  });
+}
+
+class _ParticipantAvatarStack extends StatelessWidget {
+  final List<String> names;
+  final Contact? Function(String name) contactForName;
+  static const int _visibleCount = 4;
+
+  const _ParticipantAvatarStack({
+    super.key,
+    required this.names,
+    required this.contactForName,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final visibleNames = names.take(_visibleCount).toList();
+    final overflowCount = names.length - visibleNames.length;
+    const avatarSize = 20.0;
+    const spacing = 14.0;
+    final itemCount = visibleNames.length + (overflowCount > 0 ? 1 : 0);
+    final width = itemCount == 0 ? 0.0 : avatarSize + (itemCount - 1) * spacing;
+
+    return SizedBox(
+      width: width,
+      height: avatarSize,
+      child: Stack(
+        clipBehavior: Clip.none,
+        children: [
+          for (var i = 0; i < visibleNames.length; i++)
+            Positioned(
+              left: i * spacing,
+              top: 0,
+              child: _ParticipantAvatar(
+                name: visibleNames[i],
+                contact: contactForName(visibleNames[i]),
+              ),
+            ),
+          if (overflowCount > 0)
+            Positioned(
+              left: visibleNames.length * spacing,
+              top: 0,
+              child: _ParticipantOverflowAvatar(count: overflowCount),
+            ),
+        ],
+      ),
+    );
+  }
+}
+
+class _ParticipantOverflowAvatar extends StatelessWidget {
+  final int count;
+
+  const _ParticipantOverflowAvatar({required this.count});
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+
+    return Container(
+      width: 20,
+      height: 20,
+      decoration: BoxDecoration(
+        color: colorScheme.surfaceContainerHighest,
+        shape: BoxShape.circle,
+        border: Border.all(color: colorScheme.surface, width: 2),
+      ),
+      alignment: Alignment.center,
+      child: Text(
+        '+$count',
+        style: Theme.of(context).textTheme.labelSmall?.copyWith(
+          fontWeight: FontWeight.w700,
+          color: colorScheme.onSurface,
+          fontSize: 8,
+        ),
+      ),
+    );
+  }
+}
+
+class _ParticipantAvatar extends StatelessWidget {
+  final String name;
+  final Contact? contact;
+
+  const _ParticipantAvatar({required this.name, required this.contact});
+
+  @override
+  Widget build(BuildContext context) {
+    if (contact != null) {
+      final surfaceColor = Theme.of(context).colorScheme.surface;
+
+      return SizedBox(
+        width: 20,
+        height: 20,
+        child: DecoratedBox(
+          decoration: BoxDecoration(
+            shape: BoxShape.circle,
+            border: Border.all(color: surfaceColor, width: 2),
+          ),
+          child: Padding(
+            padding: const EdgeInsets.all(2),
+            child: ClipOval(child: ContactAvatar(contact: contact!, radius: 6)),
+          ),
+        ),
+      );
+    }
+
+    final colorScheme = Theme.of(context).colorScheme;
+
+    return Container(
+      width: 20,
+      height: 20,
+      decoration: BoxDecoration(
+        color: colorScheme.tertiaryContainer,
+        shape: BoxShape.circle,
+        border: Border.all(color: colorScheme.surface, width: 2),
+      ),
+      alignment: Alignment.center,
+      child: Text(
+        AvatarLabelHelper.buildLabel(name),
+        style: Theme.of(context).textTheme.labelSmall?.copyWith(
+          fontWeight: FontWeight.w700,
+          color: colorScheme.onTertiaryContainer,
+          fontSize: 8,
+        ),
+      ),
+    );
+  }
+}

lib/widgets/sensors/sensor_telemetry_card.dart

@@ -29,6 +29,31 @@ class SensorMetricOption {
   });
 }
 
+const Set<String> _imperialMeasurementCountries = <String>{
+  'US',
+  'LR',
+  'MM',
+};
+
+bool _usesImperialSpeedUnits() {
+  final countryCode =
+      WidgetsBinding.instance.platformDispatcher.locale.countryCode;
+  if (countryCode == null || countryCode.isEmpty) {
+    return false;
+  }
+  return _imperialMeasurementCountries.contains(countryCode.toUpperCase());
+}
+
+String _formatPreviewSpeed(num metersPerSecond) {
+  if (_usesImperialSpeedUnits()) {
+    final milesPerHour = metersPerSecond * 2.2369362920544;
+    return '${_formatPreviewNumber(milesPerHour, maxFractionDigits: 2)} mph';
+  }
+
+  final kilometersPerHour = metersPerSecond * 3.6;
+  return '${_formatPreviewNumber(kilometersPerHour, maxFractionDigits: 2)} km/h';
+}
+
 List<SensorMetricOption> sensorMetricOptionsFor(
   Contact? contact, {
   Map<String, String> labelOverrides = const <String, String>{},
@@ -795,17 +820,17 @@ String? _sensorMetricPreviewValue(String rawKey, dynamic value) {
     case 'speed':
       final metersPerSecond = _previewAsDouble(value);
       if (metersPerSecond == null) return null;
-      return '${_formatPreviewNumber(metersPerSecond, maxFractionDigits: 2)} m/s';
+      return _formatPreviewSpeed(metersPerSecond);
 
     case 'signed_speed':
       final metersPerSecond = _previewAsDouble(value);
       if (metersPerSecond == null) return null;
-      return '${_formatPreviewNumber(metersPerSecond, maxFractionDigits: 2)} m/s';
+      return _formatPreviewSpeed(metersPerSecond);
 
     case 'gust':
       final metersPerSecond = _previewAsDouble(value);
       if (metersPerSecond == null) return null;
-      return '${_formatPreviewNumber(metersPerSecond, maxFractionDigits: 2)} m/s';
+      return _formatPreviewSpeed(metersPerSecond);
 
     case 'dew':
       final degreesCelsius = _previewAsDouble(value);
@@ -1066,6 +1091,16 @@ class SensorTelemetryCard extends StatelessWidget {
     this.labelOverrides = const <String, String>{},
   });
 
+  String _formatSpeed(num metersPerSecond) {
+    if (_usesImperialSpeedUnits()) {
+      final milesPerHour = metersPerSecond * 2.2369362920544;
+      return '${_formatNumber(milesPerHour, maxFractionDigits: 2)} mph';
+    }
+
+    final kilometersPerHour = metersPerSecond * 3.6;
+    return '${_formatNumber(kilometersPerHour, maxFractionDigits: 2)} km/h';
+  }
+
   bool get _showsMenu =>
       onRefresh != null ||
       onCustomize != null ||
@@ -1759,7 +1794,7 @@ class SensorTelemetryCard extends StatelessWidget {
           fieldKey: _extraFieldKey(rawKey),
           icon: Icons.air,
           label: label,
-          value: '${_formatNumber(metersPerSecond, maxFractionDigits: 2)} m/s',
+          value: _formatSpeed(metersPerSecond),
           accent: const Color(0xFF2B78A0),
           channel: metricKey.channel,
         );
@@ -1771,7 +1806,7 @@ class SensorTelemetryCard extends StatelessWidget {
           fieldKey: _extraFieldKey(rawKey),
           icon: Icons.air,
           label: label,
-          value: '${_formatNumber(metersPerSecond, maxFractionDigits: 2)} m/s',
+          value: _formatSpeed(metersPerSecond),
           accent: const Color(0xFF2B78A0),
           channel: metricKey.channel,
         );
@@ -1783,7 +1818,7 @@ class SensorTelemetryCard extends StatelessWidget {
           fieldKey: _extraFieldKey(rawKey),
           icon: Icons.air,
           label: label,
-          value: '${_formatNumber(metersPerSecond, maxFractionDigits: 2)} m/s',
+          value: _formatSpeed(metersPerSecond),
           accent: const Color(0xFF1E88A8),
           channel: metricKey.channel,
         );
@@ -2252,7 +2287,7 @@ class _InlineAlertBadge extends StatelessWidget {
   }
 }
 
-class SensorMetricTile extends StatelessWidget {
+class SensorMetricTile extends StatefulWidget {
   final SensorMetricCardData data;
   final double width;
   final String keyPrefix;
@@ -2268,8 +2303,43 @@ class SensorMetricTile extends StatelessWidget {
     this.onLongPress,
   });
 
+  @override
+  State<SensorMetricTile> createState() => _SensorMetricTileState();
+}
+
+class _SensorMetricTileState extends State<SensorMetricTile> {
+  final flutter_map.MapController _previewMapController =
+      flutter_map.MapController();
+
+  @override
+  void didUpdateWidget(covariant SensorMetricTile oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    final previousLocation = oldWidget.data.mapLocation;
+    final nextLocation = widget.data.mapLocation;
+    if (!_sameMapLocation(previousLocation, nextLocation) &&
+        nextLocation != null &&
+        widget.allowMapPreview) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        if (!mounted) {
+          return;
+        }
+        _previewMapController.move(
+          nextLocation,
+          _previewMapController.camera.zoom,
+        );
+      });
+    }
+  }
+
+  bool _sameMapLocation(LatLng? a, LatLng? b) {
+    if (a == null || b == null) {
+      return a == b;
+    }
+    return a.latitude == b.latitude && a.longitude == b.longitude;
+  }
+
   Future<void> _showExpandedMap(BuildContext context) async {
-    final location = data.mapLocation;
+    final location = widget.data.mapLocation;
     if (location == null) return;
 
     await Navigator.of(context).push(
@@ -2280,9 +2350,9 @@ class SensorMetricTile extends StatelessWidget {
               title: Column(
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: [
-                  Text(data.label),
+                  Text(widget.data.label),
                   Text(
-                    data.value,
+                    widget.data.value,
                     style: Theme.of(pageContext).textTheme.bodySmall,
                   ),
                 ],
@@ -2291,11 +2361,11 @@ class SensorMetricTile extends StatelessWidget {
             body: Column(
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
-                if (data.secondaryValue != null)
+                if (widget.data.secondaryValue != null)
                   Padding(
                     padding: const EdgeInsets.fromLTRB(16, 0, 16, 12),
                     child: Text(
-                      data.secondaryValue!,
+                      widget.data.secondaryValue!,
                       style: Theme.of(pageContext).textTheme.bodyMedium,
                     ),
                   ),
@@ -2320,7 +2390,7 @@ class SensorMetricTile extends StatelessWidget {
                             height: 40,
                             child: Icon(
                               Icons.location_on,
-                              color: data.accent,
+                              color: widget.data.accent,
                               size: 34,
                             ),
                           ),
@@ -2340,14 +2410,15 @@ class SensorMetricTile extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final data = widget.data;
     return Material(
       color: Colors.transparent,
       child: InkWell(
-        key: ValueKey('${keyPrefix}_${data.fieldKey}'),
+        key: ValueKey('${widget.keyPrefix}_${data.fieldKey}'),
         borderRadius: BorderRadius.circular(22),
-        onLongPress: onLongPress,
+        onLongPress: widget.onLongPress,
         child: Container(
-          width: width,
+          width: widget.width,
           padding: const EdgeInsets.all(8),
           decoration: BoxDecoration(
             color: data.accent.withValues(alpha: 0.08),
@@ -2368,7 +2439,10 @@ class SensorMetricTile extends StatelessWidget {
                         ),
                         const SizedBox(width: 10),
                         Expanded(
-                          child: _MetricText(data: data, keyPrefix: keyPrefix),
+                          child: _MetricText(
+                            data: data,
+                            keyPrefix: widget.keyPrefix,
+                          ),
                         ),
                       ],
                     ),
@@ -2387,7 +2461,7 @@ class SensorMetricTile extends StatelessWidget {
                       ),
                   ],
                 )
-              : data.mapLocation == null || !allowMapPreview
+              : data.mapLocation == null || !widget.allowMapPreview
               ? Stack(
                   children: [
                     Row(
@@ -2396,7 +2470,10 @@ class SensorMetricTile extends StatelessWidget {
                         _MetricIcon(accent: data.accent, icon: data.icon),
                         const SizedBox(width: 10),
                         Expanded(
-                          child: _MetricText(data: data, keyPrefix: keyPrefix),
+                          child: _MetricText(
+                            data: data,
+                            keyPrefix: widget.keyPrefix,
+                          ),
                         ),
                       ],
                     ),
@@ -2424,7 +2501,10 @@ class SensorMetricTile extends StatelessWidget {
                         _MetricIcon(accent: data.accent, icon: data.icon),
                         const SizedBox(width: 10),
                         Expanded(
-                          child: _MetricText(data: data, keyPrefix: keyPrefix),
+                          child: _MetricText(
+                            data: data,
+                            keyPrefix: widget.keyPrefix,
+                          ),
                         ),
                       ],
                     ),
@@ -2439,12 +2519,13 @@ class SensorMetricTile extends StatelessWidget {
                           child: SizedBox(
                             height: 104,
                             width: double.infinity,
-                            child: Stack(
-                              children: [
-                                flutter_map.FlutterMap(
-                                  options: flutter_map.MapOptions(
-                                    initialCenter: data.mapLocation!,
-                                    initialZoom: 14,
+                              child: Stack(
+                                children: [
+                                  flutter_map.FlutterMap(
+                                    mapController: _previewMapController,
+                                    options: flutter_map.MapOptions(
+                                      initialCenter: data.mapLocation!,
+                                      initialZoom: 14,
                                     interactionOptions:
                                         const flutter_map.InteractionOptions(
                                           flags:

pubspec.lock

@@ -827,8 +827,8 @@ packages:
     dependency: "direct main"
     description:
       path: "."
-      ref: main
-      resolved-ref: "71902401e9a6bc7d2ed1193f8961e7256646ab76"
+      ref: "0bb339f684f709cf5b9d40c07827cc62beb18a4d"
+      resolved-ref: "0bb339f684f709cf5b9d40c07827cc62beb18a4d"
       url: "https://github.com/dz0ny/meshcore_client.git"
     source: git
     version: "0.1.0"

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 2026.0322.1+38
+version: 2026.0324.1+43
 
 environment:
   sdk: ^3.9.2
@@ -44,7 +44,7 @@ dependencies:
   meshcore_client:
     git:
       url: https://github.com/dz0ny/meshcore_client.git
-      ref: main
+      ref: 0bb339f684f709cf5b9d40c07827cc62beb18a4d
 
   # Codec2 ultra-low-bitrate speech codec (FFI plugin)
   codec2_flutter:

test/providers/channels_provider_test.dart

@@ -1,6 +1,7 @@
 import 'dart:typed_data';
 
 import 'package:flutter_test/flutter_test.dart';
+import 'package:meshcore_sar_app/models/channel.dart';
 import 'package:meshcore_sar_app/providers/channels_provider.dart';
 
 void main() {
@@ -22,4 +23,38 @@ void main() {
       expect(provider.selectedChannel, isNull);
     });
   });
+
+  group('ChannelsProvider mesh hash lookup', () {
+    test('resolves a unique channel display name by hash byte', () {
+      final provider = ChannelsProvider();
+      final channel = Channel.create(index: 3, name: '#ops');
+
+      provider.addOrUpdateChannelObject(channel);
+
+      expect(
+        provider.getUniqueChannelDisplayNameByHashByte(channel.hashByte),
+        '#ops',
+      );
+    });
+
+    test('does not resolve ambiguous hash matches', () {
+      final provider = ChannelsProvider();
+      final secret = Uint8List.fromList(List<int>.filled(16, 7));
+      final firstChannel = Channel.create(
+        index: 1,
+        name: 'Ops 1',
+        explicitSecret: secret,
+      );
+
+      provider.addOrUpdateChannelObject(firstChannel);
+      provider.addOrUpdateChannelObject(
+        Channel.create(index: 2, name: 'Ops 2', explicitSecret: secret),
+      );
+
+      expect(
+        provider.getUniqueChannelDisplayNameByHashByte(firstChannel.hashByte),
+        isNull,
+      );
+    });
+  });
 }

test/providers/contacts_provider_test.dart

@@ -781,6 +781,19 @@ void main() {
       expect(updated.advLat, equals((44.123456 * 1e6).round()));
       expect(updated.advLon, equals((13.654321 * 1e6).round()));
       expect(updated.lastAdvert, equals(1700001234));
+      expect(updated.lastMod, equals(1700001234));
+      expect(
+        provider.estimatedLocationFor(updated.publicKeyHex),
+        isNotNull,
+      );
+      expect(
+        provider.estimatedLocationFor(updated.publicKeyHex)!.latitude,
+        closeTo(44.123456, 0.000001),
+      );
+      expect(
+        provider.estimatedLocationFor(updated.publicKeyHex)!.longitude,
+        closeTo(13.654321, 0.000001),
+      );
     });
 
     test('ignores unknown sender prefix safely', () {
@@ -880,7 +893,7 @@ void main() {
     });
 
     test(
-      'clears runtime contacts before sync without erasing persisted contacts or saved groups',
+      'keeps runtime contacts visible during sync without erasing persisted contacts or saved groups',
       () async {
         final key = createPublicKey(140);
         final pendingKey = createPublicKey(180);
@@ -893,8 +906,11 @@ void main() {
 
         await provider.prepareForDeviceContactSync();
 
-        expect(provider.chatContacts, isEmpty);
-        expect(provider.pendingAdverts, isEmpty);
+        expect(
+          provider.chatContacts.map((contact) => contact.advName),
+          contains('Synced Later'),
+        );
+        expect(provider.pendingAdverts, hasLength(1));
         expect(provider.savedGroupsForSection('teamMembers'), hasLength(1));
 
         final restored = ContactsProvider();

test/providers/messages_provider_retransmission_test.dart

@@ -214,7 +214,7 @@ void main() {
       });
     });
 
-    test('channel warning clears when replay is deduped into sent bubble', () {
+    test('channel warning clears when replay arrives after send', () {
       fakeAsync((async) {
         final provider = MessagesProvider();
         provider.resolveContactNameCallback = (_) => 'dz0ny (SI)';
@@ -240,10 +240,11 @@ void main() {
 
         expect(provider.hasChannelSendWarning('c-warn-replay'), isFalse);
         expect(provider.messages, hasLength(1));
+        expect(provider.messages.single.id, equals('c-warn-replay'));
       });
     });
 
-    test('channel replay is deduped for self sender within repeat window', () {
+    test('channel replay merges into sent message for self sender within repeat window', () {
       final provider = MessagesProvider();
       provider.resolveContactNameCallback = (_) => 'dz0ny (SI)';
       provider.addSentMessage(
@@ -261,7 +262,7 @@ void main() {
 
       expect(provider.messages, hasLength(1));
       expect(provider.messages.single.id, equals('c-echo'));
-      expect(provider.messages.single.senderName, equals('dz0ny (SI)'));
+      expect(provider.messages.single.pathLen, equals(1));
     });
 
     test(
@@ -308,7 +309,7 @@ void main() {
       expect(provider.messages, hasLength(2));
     });
 
-    test('channel replay can dedupe using lazily resolved self name', () {
+    test('channel replay merges using lazily resolved self name', () {
       final provider = MessagesProvider();
       provider.addSentMessage(
         _buildSentChannelMessage(id: 'c-lazy', senderTimestamp: 1700000400),
@@ -328,7 +329,7 @@ void main() {
       expect(provider.messages.single.id, equals('c-lazy'));
     });
 
-    test('channel replay dedupes meshcore-prefixed self sender name', () {
+    test('channel replay merges for meshcore-prefixed self sender name', () {
       final provider = MessagesProvider();
       provider.resolveContactNameCallback = (_) => 'MeshCore-dz0ny (SI)';
       provider.addSentMessage(
@@ -422,6 +423,133 @@ void main() {
       expect(provider.messages.single.id, equals('handle-1'));
     });
 
+    test('channel duplicates only dedupe against the latest channel message', () {
+      final provider = MessagesProvider();
+      final sender = Uint8List.fromList([9, 8, 7, 6, 5, 4]);
+
+      provider.addMessage(
+        Message(
+          id: 'channel-first',
+          messageType: MessageType.channel,
+          channelIdx: 2,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000820,
+          text: 'same payload',
+          senderName: 'Radio Alpha',
+          receivedAt: DateTime.now(),
+          senderPublicKeyPrefix: sender,
+        ),
+      );
+      provider.addMessage(
+        Message(
+          id: 'channel-middle',
+          messageType: MessageType.channel,
+          channelIdx: 2,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000825,
+          text: 'different payload',
+          senderName: 'Radio Bravo',
+          receivedAt: DateTime.now(),
+          senderPublicKeyPrefix: Uint8List.fromList([1, 2, 3, 4, 5, 6]),
+        ),
+      );
+      provider.addMessage(
+        Message(
+          id: 'channel-repeat',
+          messageType: MessageType.channel,
+          channelIdx: 2,
+          pathLen: 2,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000830,
+          text: 'same payload',
+          senderName: 'Radio Alpha',
+          receivedAt: DateTime.now(),
+          senderPublicKeyPrefix: sender,
+        ),
+      );
+
+      expect(provider.messages, hasLength(3));
+      expect(provider.messages.last.id, equals('channel-repeat'));
+    });
+
+    test('adjacent channel duplicates still dedupe within 5 seconds', () {
+      final provider = MessagesProvider();
+      final sender = Uint8List.fromList([4, 5, 6, 7, 8, 9]);
+      final baseTime = DateTime.fromMillisecondsSinceEpoch(1700000840000);
+
+      provider.addMessage(
+        Message(
+          id: 'adjacent-1',
+          messageType: MessageType.channel,
+          channelIdx: 3,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000840,
+          text: 'same payload',
+          senderName: 'Radio Charlie',
+          receivedAt: baseTime,
+          senderPublicKeyPrefix: sender,
+        ),
+      );
+      provider.addMessage(
+        Message(
+          id: 'adjacent-2',
+          messageType: MessageType.channel,
+          channelIdx: 3,
+          pathLen: 2,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000845,
+          text: 'same payload',
+          senderName: 'Radio Charlie',
+          receivedAt: baseTime.add(const Duration(seconds: 4)),
+          senderPublicKeyPrefix: sender,
+        ),
+      );
+
+      expect(provider.messages, hasLength(1));
+      expect(provider.messages.single.id, equals('adjacent-1'));
+    });
+
+    test('channel duplicates outside 5 second window are kept', () {
+      final provider = MessagesProvider();
+      final sender = Uint8List.fromList([6, 7, 8, 9, 0, 1]);
+      final baseTime = DateTime.fromMillisecondsSinceEpoch(1700000850000);
+
+      provider.addMessage(
+        Message(
+          id: 'window-1',
+          messageType: MessageType.channel,
+          channelIdx: 4,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000850,
+          text: 'same payload',
+          senderName: 'Radio Delta',
+          receivedAt: baseTime,
+          senderPublicKeyPrefix: sender,
+        ),
+      );
+      provider.addMessage(
+        Message(
+          id: 'window-2',
+          messageType: MessageType.channel,
+          channelIdx: 4,
+          pathLen: 2,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000855,
+          text: 'same payload',
+          senderName: 'Radio Delta',
+          receivedAt: baseTime.add(const Duration(seconds: 6)),
+          senderPublicKeyPrefix: sender,
+        ),
+      );
+
+      expect(provider.messages, hasLength(2));
+      expect(provider.messages.last.id, equals('window-2'));
+    });
+
     test('display list collapses stored duplicates and sums copy counts', () {
       final provider = MessagesProvider();
       final sender = Uint8List.fromList([5, 4, 3, 2, 1, 0]);
@@ -462,6 +590,30 @@ void main() {
       expect(display.single.occurrenceCount, equals(2));
     });
 
+    test('display list keeps a single sent message for self replay', () {
+      final provider = MessagesProvider();
+      provider.resolveContactNameCallback = (_) => 'dz0ny (SI)';
+      provider.addSentMessage(
+        _buildSentChannelMessage(id: 'display-sent', senderTimestamp: 1700000900),
+      );
+      provider.markMessageSent('display-sent', 0, 0);
+
+      provider.addMessage(
+        _buildReceivedChannelReplay(
+          id: 'display-received',
+          senderTimestamp: 1700000901,
+          senderName: 'dz0ny (SI)',
+        ),
+      );
+
+      final display = provider.buildDisplayMessages(
+        provider.getRecentMessages(),
+      );
+
+      expect(display, hasLength(1));
+      expect(display.single.message.id, equals('display-sent'));
+    });
+
     test('missing ACK schedules a delayed retransmission', () {
       fakeAsync((async) {
         final provider = MessagesProvider();

test/providers/sensors_provider_test.dart

@@ -356,7 +356,7 @@ void main() {
     expect(connectionProvider.pingCalls, 2);
   });
 
-  test('refreshDueSensors refreshes self every minute', () async {
+  test('refreshDueSensors refreshes self every 30 seconds', () async {
     SharedPreferences.setMockInitialValues({});
     final selfKey = Uint8List(32)..[0] = 0x66;
     final contactsProvider = ContactsProvider();
@@ -383,14 +383,21 @@ void main() {
       contactsProvider: contactsProvider,
       connectionProvider: connectionProvider,
     );
-    expect(connectionProvider.pingCalls, 1);
+    expect(connectionProvider.pingCalls, 2);
+
+    await provider.refreshDueSensors(
+      now: start.add(const Duration(seconds: 59)),
+      contactsProvider: contactsProvider,
+      connectionProvider: connectionProvider,
+    );
+    expect(connectionProvider.pingCalls, 2);
 
     await provider.refreshDueSensors(
       now: start.add(const Duration(minutes: 1)),
       contactsProvider: contactsProvider,
       connectionProvider: connectionProvider,
     );
-    expect(connectionProvider.pingCalls, 2);
+    expect(connectionProvider.pingCalls, 3);
   });
 
   test(

test/screens/discovery_screen_test.dart

@@ -38,6 +38,7 @@ Future<void> _pumpDiscoveryScreen(
   WidgetTester tester, {
   ContactsProvider? contactsProvider,
   ConnectionProvider? connectionProvider,
+  DiscoveryScreen screen = const DiscoveryScreen(),
 }) async {
   final resolvedContactsProvider = contactsProvider ?? ContactsProvider();
   final resolvedConnectionProvider =
@@ -56,7 +57,7 @@ Future<void> _pumpDiscoveryScreen(
       child: MaterialApp(
         localizationsDelegates: AppLocalizations.localizationsDelegates,
         supportedLocales: AppLocalizations.supportedLocales,
-        home: const DiscoveryScreen(),
+        home: screen,
       ),
     ),
   );
@@ -113,6 +114,21 @@ void main() {
     },
   );
 
+  testWidgets('auto discovery can trigger repeater discovery on open', (
+    tester,
+  ) async {
+    final connectionProvider = _FakeConnectionProvider(isConnected: true);
+
+    await _pumpDiscoveryScreen(
+      tester,
+      connectionProvider: connectionProvider,
+      screen: const DiscoveryScreen(autoDiscoverRepeatersOnOpen: true),
+    );
+
+    expect(connectionProvider.discoveredAdvertTypes, [2]);
+    expect(find.text('Repeater discovery sent'), findsOneWidget);
+  });
+
   testWidgets('search and inline type filters narrow discovered nodes', (
     tester,
   ) async {

test/screens/live_traffic_screen_test.dart

@@ -2,9 +2,12 @@ import 'dart:typed_data';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:meshcore_sar_app/models/channel.dart';
 import 'package:meshcore_sar_app/models/ble_packet_log.dart';
 import 'package:meshcore_sar_app/l10n/app_localizations.dart';
+import 'package:meshcore_sar_app/providers/channels_provider.dart';
 import 'package:meshcore_sar_app/screens/live_traffic_screen.dart';
+import 'package:provider/provider.dart';
 
 BlePacketLog _log({
   required DateTime timestamp,
@@ -51,12 +54,16 @@ List<int> _multiHopRaw({
   ];
 }
 
-Widget _testApp(Widget child) {
-  return MaterialApp(
+Widget _testApp(Widget child, {ChannelsProvider? channelsProvider}) {
+  final app = MaterialApp(
     localizationsDelegates: AppLocalizations.localizationsDelegates,
     supportedLocales: AppLocalizations.supportedLocales,
     home: child,
   );
+  if (channelsProvider == null) {
+    return app;
+  }
+  return ChangeNotifierProvider.value(value: channelsProvider, child: app);
 }
 
 void main() {
@@ -190,6 +197,82 @@ void main() {
     expect(find.textContaining('Size: 3 bytes'), findsOneWidget);
   });
 
+  testWidgets('shows known channel name for group traffic', (tester) async {
+    final logs = <BlePacketLog>[];
+    final refresh = ValueNotifier<int>(0);
+    final channel = Channel.create(index: 3, name: '#ops');
+    final channelsProvider = ChannelsProvider()
+      ..initializePublicChannel()
+      ..addOrUpdateChannelObject(channel);
+    final now = DateTime(2026, 3, 12, 12, 0, 0);
+
+    logs.add(
+      _log(
+        timestamp: now.subtract(const Duration(seconds: 4)),
+        direction: PacketDirection.rx,
+        rawData: [
+          ..._multiHopRaw(hops: [0xC0, 0x10], payloadType: 0x05),
+          channel.hashByte,
+        ],
+        responseCode: 0x88,
+      ),
+    );
+
+    await tester.pumpWidget(
+      _testApp(
+        LiveTrafficScreen(
+          logReader: () => logs,
+          refreshListenable: refresh,
+          now: () => now,
+        ),
+        channelsProvider: channelsProvider,
+      ),
+    );
+
+    expect(find.text('#ops'), findsOneWidget);
+    expect(find.text('Channel: #ops (${channel.hashHex})'), findsOneWidget);
+    expect(find.text('FLOOD GROUP_TEXT'), findsNothing);
+  });
+
+  testWidgets('shows packet type help sheet from the app bar', (tester) async {
+    final logs = <BlePacketLog>[];
+    final refresh = ValueNotifier<int>(0);
+    final now = DateTime(2026, 3, 12, 12, 0, 0);
+
+    await tester.pumpWidget(
+      _testApp(
+        LiveTrafficScreen(
+          logReader: () => logs,
+          refreshListenable: refresh,
+          now: () => now,
+        ),
+      ),
+    );
+
+    await tester.tap(find.byTooltip('Packet type help'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Packet Types'), findsOneWidget);
+    await tester.scrollUntilVisible(
+      find.text('FLOOD RETURNED_PATH'),
+      300,
+      scrollable: find.byType(Scrollable).last,
+    );
+    await tester.pumpAndSettle();
+    expect(find.text('FLOOD RETURNED_PATH'), findsOneWidget);
+    expect(
+      find.textContaining('stores that returned path as the peer\'s direct out-path'),
+      findsOneWidget,
+    );
+    await tester.scrollUntilVisible(
+      find.text('FLOOD CONTROL'),
+      300,
+      scrollable: find.byType(Scrollable).last,
+    );
+    await tester.pumpAndSettle();
+    expect(find.text('FLOOD CONTROL'), findsOneWidget);
+  });
+
   testWidgets('summary metrics expand across wide layouts', (tester) async {
     tester.view.physicalSize = const Size(1200, 900);
     tester.view.devicePixelRatio = 1;

test/screens/messages_tab_test.dart

@@ -13,6 +13,7 @@ import 'package:meshcore_sar_app/providers/map_provider.dart';
 import 'package:meshcore_sar_app/providers/messages_provider.dart';
 import 'package:meshcore_sar_app/providers/voice_provider.dart';
 import 'package:meshcore_sar_app/screens/messages_tab.dart';
+import 'package:meshcore_sar_app/services/message_destination_preferences.dart';
 import 'package:meshcore_sar_app/services/voice_codec_service.dart';
 import 'package:meshcore_sar_app/services/voice_player_service.dart';
 import 'package:provider/provider.dart';
@@ -208,4 +209,227 @@ void main() {
     connectionProvider.dispose();
     channelsProvider.dispose();
   });
+
+  testWidgets(
+    'locks messages tab to the configured channel and removes the selector affordance',
+    (tester) async {
+      final lockedChannel = buildContact(
+        name: '#ops',
+        type: ContactType.channel,
+        secondByte: 2,
+      );
+      SharedPreferences.setMockInitialValues({
+        'message_locked_destination_enabled': true,
+        'message_locked_destination_type':
+            MessageDestinationPreferences.destinationTypeChannel,
+        'message_locked_recipient_public_key': lockedChannel.publicKeyHex,
+      });
+
+      final connectionProvider = ConnectionProvider();
+      final contactsProvider = ContactsProvider();
+      final messagesProvider = MessagesProvider();
+      final mapProvider = MapProvider();
+      final drawingProvider = DrawingProvider();
+      await messagesProvider.initialize();
+      await drawingProvider.initialize();
+      final channelsProvider = ChannelsProvider()..initializePublicChannel();
+      final voiceProvider = VoiceProvider(
+        codec: VoiceCodecService(),
+        player: VoicePlayerService(),
+      );
+      final imageProvider = ip.ImageProvider();
+      final appProvider = AppProvider(
+        connectionProvider: connectionProvider,
+        contactsProvider: contactsProvider,
+        messagesProvider: messagesProvider,
+        drawingProvider: drawingProvider,
+        channelsProvider: channelsProvider,
+        voiceProvider: voiceProvider,
+        imageProvider: imageProvider,
+      );
+
+      contactsProvider.addContacts([lockedChannel]);
+      messagesProvider.addMessage(
+        Message(
+          id: 'public-message',
+          messageType: MessageType.channel,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000200,
+          text: 'Public chatter',
+          receivedAt: DateTime.now(),
+          channelIdx: 0,
+        ),
+      );
+      messagesProvider.addMessage(
+        Message(
+          id: 'locked-message',
+          messageType: MessageType.channel,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000201,
+          text: 'Ops chatter',
+          receivedAt: DateTime.now(),
+          channelIdx: 2,
+        ),
+      );
+
+      await tester.pumpWidget(
+        MultiProvider(
+          providers: [
+            ChangeNotifierProvider.value(value: connectionProvider),
+            ChangeNotifierProvider.value(value: contactsProvider),
+            ChangeNotifierProvider.value(value: messagesProvider),
+            ChangeNotifierProvider.value(value: mapProvider),
+            ChangeNotifierProvider.value(value: drawingProvider),
+            ChangeNotifierProvider.value(value: channelsProvider),
+            ChangeNotifierProvider.value(value: voiceProvider),
+            ChangeNotifierProvider.value(value: imageProvider),
+            ChangeNotifierProvider.value(value: appProvider),
+          ],
+          child: MaterialApp(
+            localizationsDelegates: AppLocalizations.localizationsDelegates,
+            supportedLocales: AppLocalizations.supportedLocales,
+            home: const Scaffold(body: MessagesTab(isActive: true)),
+          ),
+        ),
+      );
+
+      await tester.pumpAndSettle();
+
+      expect(find.text('Ops chatter'), findsOneWidget);
+      expect(find.text('Public chatter'), findsNothing);
+      expect(
+        find.byKey(const ValueKey('messages_composer_destination_locked')),
+        findsOneWidget,
+      );
+      expect(
+        find.byKey(const ValueKey('messages_composer_destination_selector')),
+        findsNothing,
+      );
+
+      appProvider.dispose();
+      voiceProvider.dispose();
+      imageProvider.dispose();
+      drawingProvider.dispose();
+      mapProvider.dispose();
+      messagesProvider.dispose();
+      contactsProvider.dispose();
+      connectionProvider.dispose();
+      channelsProvider.dispose();
+    },
+  );
+
+  testWidgets(
+    'contact navigation temporarily overrides the lock while keeping the selector hidden',
+    (tester) async {
+      final directContact = buildContact(
+        name: 'Tim',
+        type: ContactType.chat,
+        secondByte: 9,
+      );
+      SharedPreferences.setMockInitialValues({
+        'message_locked_destination_enabled': true,
+        'message_locked_destination_type':
+            MessageDestinationPreferences.destinationTypeChannel,
+      });
+
+      final connectionProvider = ConnectionProvider();
+      final contactsProvider = ContactsProvider();
+      final messagesProvider = MessagesProvider();
+      final mapProvider = MapProvider();
+      final drawingProvider = DrawingProvider();
+      await messagesProvider.initialize();
+      await drawingProvider.initialize();
+      final channelsProvider = ChannelsProvider()..initializePublicChannel();
+      final voiceProvider = VoiceProvider(
+        codec: VoiceCodecService(),
+        player: VoicePlayerService(),
+      );
+      final imageProvider = ip.ImageProvider();
+      final appProvider = AppProvider(
+        connectionProvider: connectionProvider,
+        contactsProvider: contactsProvider,
+        messagesProvider: messagesProvider,
+        drawingProvider: drawingProvider,
+        channelsProvider: channelsProvider,
+        voiceProvider: voiceProvider,
+        imageProvider: imageProvider,
+      );
+
+      contactsProvider.addContacts([directContact]);
+      messagesProvider.addMessage(
+        Message(
+          id: 'public-message',
+          messageType: MessageType.channel,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000300,
+          text: 'Public chatter',
+          receivedAt: DateTime.now(),
+          channelIdx: 0,
+        ),
+      );
+      messagesProvider.addMessage(
+        Message(
+          id: 'direct-message',
+          messageType: MessageType.contact,
+          senderPublicKeyPrefix: directContact.publicKey.sublist(0, 6),
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000301,
+          text: 'Direct chatter',
+          receivedAt: DateTime.now(),
+        ),
+      );
+      messagesProvider.navigateToDestination(
+        MessageDestinationPreferences.destinationTypeContact,
+        recipientPublicKeyHex: directContact.publicKeyHex,
+      );
+
+      await tester.pumpWidget(
+        MultiProvider(
+          providers: [
+            ChangeNotifierProvider.value(value: connectionProvider),
+            ChangeNotifierProvider.value(value: contactsProvider),
+            ChangeNotifierProvider.value(value: messagesProvider),
+            ChangeNotifierProvider.value(value: mapProvider),
+            ChangeNotifierProvider.value(value: drawingProvider),
+            ChangeNotifierProvider.value(value: channelsProvider),
+            ChangeNotifierProvider.value(value: voiceProvider),
+            ChangeNotifierProvider.value(value: imageProvider),
+            ChangeNotifierProvider.value(value: appProvider),
+          ],
+          child: MaterialApp(
+            localizationsDelegates: AppLocalizations.localizationsDelegates,
+            supportedLocales: AppLocalizations.supportedLocales,
+            home: const Scaffold(body: MessagesTab(isActive: true)),
+          ),
+        ),
+      );
+
+      await tester.pumpAndSettle();
+
+      expect(find.text('Direct chatter'), findsOneWidget);
+      expect(find.text('Public chatter'), findsNothing);
+      expect(
+        find.byKey(const ValueKey('messages_composer_destination_locked')),
+        findsOneWidget,
+      );
+      expect(
+        find.byKey(const ValueKey('messages_composer_destination_selector')),
+        findsNothing,
+      );
+
+      appProvider.dispose();
+      voiceProvider.dispose();
+      imageProvider.dispose();
+      drawingProvider.dispose();
+      mapProvider.dispose();
+      messagesProvider.dispose();
+      contactsProvider.dispose();
+      connectionProvider.dispose();
+      channelsProvider.dispose();
+    },
+  );
 }

test/screens/sensors_tab_test.dart

@@ -4,27 +4,16 @@ import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:meshcore_sar_app/l10n/app_localizations.dart';
 import 'package:meshcore_sar_app/models/contact.dart';
-import 'package:meshcore_sar_app/providers/contacts_provider.dart';
-import 'package:meshcore_sar_app/providers/sensors_provider.dart';
 import 'package:meshcore_sar_app/screens/sensors_tab.dart';
-import 'package:provider/provider.dart';
-import 'package:shared_preferences/shared_preferences.dart';
+import 'package:meshcore_sar_app/widgets/sensors/sensor_telemetry_card.dart';
 
 void main() {
-  setUp(() {
-    SharedPreferences.setMockInitialValues({});
-  });
-
-  Future<void> waitUntilLoaded(SensorsProvider provider) async {
-    for (var i = 0; i < 20 && !provider.isLoaded; i++) {
-      await Future<void>.delayed(Duration.zero);
-    }
-    expect(provider.isLoaded, isTrue);
-  }
-
-  Contact buildSensorContact() {
+  Contact buildSensorContact({
+    int firstByte = 0x44,
+    String name = 'WX Station',
+  }) {
     final publicKey = Uint8List(32);
-    publicKey[0] = 0x44;
+    publicKey[0] = firstByte;
 
     return Contact(
       publicKey: publicKey,
@@ -32,7 +21,7 @@ void main() {
       flags: 0,
       outPathLen: 0,
       outPath: Uint8List(64),
-      advName: 'WX Station',
+      advName: name,
       lastAdvert: DateTime.now().millisecondsSinceEpoch ~/ 1000,
       advLat: 0,
       advLon: 0,
@@ -50,48 +39,84 @@ void main() {
     );
   }
 
-  testWidgets('customize action opens full customization view', (tester) async {
+  testWidgets('metric selector item shows channel-specific preview', (
+    tester,
+  ) async {
     final contact = buildSensorContact();
-    final sensorsProvider = SensorsProvider();
-    final contactsProvider = ContactsProvider();
-
-    await waitUntilLoaded(sensorsProvider);
-    contactsProvider.addOrUpdateContact(contact);
-    await sensorsProvider.addSensor(contact);
+    final option = sensorMetricOptionsFor(contact, labelOverrides: const {})
+        .firstWhere(
+          (entry) => entry.key.contains('illuminance') && entry.channel == 2,
+        );
 
     await tester.pumpWidget(
-      MultiProvider(
-        providers: [
-          ChangeNotifierProvider<ContactsProvider>.value(
-            value: contactsProvider,
+      MaterialApp(
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: Scaffold(
+          body: SensorMetricSelectorItem(
+            option: option,
+            visible: true,
+            span: 1,
+            canMoveUp: false,
+            canMoveDown: false,
+            onToggle: (_) {},
+            onRename: () {},
+            onSpanChanged: (_) {},
           ),
-          ChangeNotifierProvider<SensorsProvider>.value(value: sensorsProvider),
-        ],
-        child: MaterialApp(
-          localizationsDelegates: AppLocalizations.localizationsDelegates,
-          supportedLocales: AppLocalizations.supportedLocales,
-          home: const SensorsTab(),
         ),
       ),
     );
     await tester.pump();
 
-    await tester.tap(find.byIcon(Icons.more_vert));
-    await tester.pump();
-    await tester.pump(const Duration(milliseconds: 300));
-    await tester.tap(find.text('Customize fields'));
-    await tester.pump();
-    await tester.pump(const Duration(milliseconds: 300));
-
-    expect(find.text('Customize WX Station'), findsOneWidget);
-    expect(find.text('Live preview'), findsOneWidget);
-    expect(find.text('Refresh schedule'), findsOneWidget);
     expect(
-      find.byKey(
-        const ValueKey('sensor_selector_metric_channel_extra:illuminance_2'),
-      ),
+      find.byKey(ValueKey('sensor_selector_metric_${option.key}')),
       findsOneWidget,
     );
     expect(find.text('Channel 2'), findsOneWidget);
   });
+
+  testWidgets('add sensor sheet keeps close action available when scrolled', (
+    tester,
+  ) async {
+    tester.view.physicalSize = const Size(320, 480);
+    tester.view.devicePixelRatio = 1;
+    addTearDown(tester.view.reset);
+
+    var didClose = false;
+    final candidates = List<Contact>.generate(
+      20,
+      (index) =>
+          buildSensorContact(firstByte: index + 1, name: 'Sensor ${index + 1}'),
+    );
+
+    await tester.pumpWidget(
+      MaterialApp(
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: Scaffold(
+          body: AddSensorSheet(
+            candidates: candidates,
+            onSelect: (_) async {},
+            onClose: () {
+              didClose = true;
+            },
+          ),
+        ),
+      ),
+    );
+    await tester.pump();
+
+    final closeButton = find.byTooltip('Close');
+    expect(closeButton, findsOneWidget);
+
+    await tester.drag(find.byType(ListView).last, const Offset(0, -600));
+    await tester.pump();
+
+    expect(closeButton, findsOneWidget);
+
+    await tester.tap(closeButton);
+    await tester.pump();
+
+    expect(didClose, isTrue);
+  });
 }

test/services/compass_support_test.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:meshcore_sar_app/services/compass_support.dart';
+
+void main() {
+  tearDown(() {
+    debugDefaultTargetPlatformOverride = null;
+  });
+
+  test('reports compass support only on mobile targets', () {
+    debugDefaultTargetPlatformOverride = TargetPlatform.android;
+    expect(CompassSupport.isAvailable, isTrue);
+
+    debugDefaultTargetPlatformOverride = TargetPlatform.iOS;
+    expect(CompassSupport.isAvailable, isTrue);
+
+    debugDefaultTargetPlatformOverride = TargetPlatform.macOS;
+    expect(CompassSupport.isAvailable, isFalse);
+
+    debugDefaultTargetPlatformOverride = TargetPlatform.windows;
+    expect(CompassSupport.isAvailable, isFalse);
+  });
+}

test/services/live_traffic_summary_test.dart

@@ -196,5 +196,18 @@ void main() {
         1,
       );
     });
+
+    test('exposes detailed descriptions for known packet types', () {
+      final returnedPath = LiveTrafficEntry.payloadTypeDetails(0x08);
+      final control = LiveTrafficEntry.payloadTypeDetails(0x0B);
+
+      expect(returnedPath.title, 'FLOOD RETURNED_PATH');
+      expect(
+        returnedPath.description,
+        contains('stores that returned path as the peer\'s direct out-path'),
+      );
+      expect(control.label, 'Control packet');
+      expect(control.description, contains('discovery request and response'));
+    });
   });
 }

test/services/location_tracking_service_test.dart

@@ -0,0 +1,55 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import 'package:meshcore_sar_app/services/location_tracking_service.dart';
+import 'package:meshcore_sar_app/services/profiles_feature_service.dart';
+
+void main() {
+  final service = LocationTrackingService();
+
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+    ProfileStorageScope.setScope(
+      profilesEnabled: false,
+      activeProfileId: 'default',
+    );
+    service.fastLocationUpdatesEnabled = false;
+    service.fastLocationMovementThresholdMeters = 10.0;
+    service.fastLocationActiveCadenceSeconds = 10;
+    service.fastLocationChannelIdx = null;
+  });
+
+  test('loads conservative fast location defaults', () async {
+    await service.loadSettings();
+
+    expect(service.fastLocationMovementThresholdMeters, 10.0);
+    expect(service.fastLocationActiveCadenceSeconds, 10);
+  });
+
+  test('persists and restores fast location channel idx', () async {
+    await service.updateFastLocationChannelIdx(3);
+
+    service.fastLocationChannelIdx = null;
+    await service.loadSettings();
+
+    expect(service.fastLocationChannelIdx, 3);
+  });
+
+  test('clears persisted fast location channel idx when unset', () async {
+    await service.updateFastLocationChannelIdx(7);
+    await service.updateFastLocationChannelIdx(null);
+
+    service.fastLocationChannelIdx = 99;
+    await service.loadSettings();
+
+    expect(service.fastLocationChannelIdx, isNull);
+  });
+
+  test('clamps fast location settings to conservative limits', () async {
+    await service.updateFastLocationMovementThreshold(3);
+    await service.updateFastLocationActiveCadenceSeconds(45);
+
+    expect(service.fastLocationMovementThresholdMeters, 10.0);
+    expect(service.fastLocationActiveCadenceSeconds, 31);
+  });
+}

test/services/message_storage_service_test.dart

@@ -1,5 +1,4 @@
-import 'dart:typed_data';
-
+import 'package:flutter/foundation.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:meshcore_client/meshcore_client.dart';
 import 'package:meshcore_sar_app/models/message_reception_details.dart';
@@ -8,11 +7,16 @@ import 'package:shared_preferences/shared_preferences.dart';
 
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
+  final originalDebugPrint = debugPrint;
 
   setUp(() {
     SharedPreferences.setMockInitialValues({});
   });
 
+  tearDown(() {
+    debugPrint = originalDebugPrint;
+  });
+
   test(
     'retains path bytes for stored unread message when reception sidecar is missing',
     () async {
@@ -155,4 +159,34 @@ void main() {
     expect(customMessages.single.id, customMessage.id);
     expect(customMessages.single.text, customMessage.text);
   });
+
+  test('skips unchanged message snapshots', () async {
+    final storage = MessageStorageService();
+    final logs = <String>[];
+    debugPrint = (String? message, {int? wrapWidth}) {
+      if (message != null) {
+        logs.add(message);
+      }
+    };
+    final message = Message(
+      id: 'msg-stable',
+      messageType: MessageType.channel,
+      senderPublicKeyPrefix: Uint8List.fromList([3, 3, 3, 3, 3, 3]),
+      channelIdx: 3,
+      pathLen: 1,
+      textType: MessageTextType.plain,
+      senderTimestamp: 1700003000,
+      text: 'Stable snapshot',
+      receivedAt: DateTime.fromMillisecondsSinceEpoch(1700003000500),
+      isRead: true,
+    );
+
+    await storage.saveMessages([message]);
+    await storage.saveMessages([message]);
+
+    expect(
+      logs.where((log) => log.contains('Saved 1 messages to storage')),
+      hasLength(1),
+    );
+  });
 }

test/services/path_history_service_test.dart

@@ -206,4 +206,75 @@ void main() {
       expect(history.directPaths.single.source, PathRecordSource.observed);
     },
   );
+
+  test('clear history removes stored direct paths for one contact', () async {
+    final service = PathHistoryService();
+
+    await service.initialize();
+    await service.recordReceivedBytePath('abc123', [0x01, 0x02], 1);
+    await service.recordReceivedBytePath('def456', [0x03, 0x04], 1);
+
+    expect(service.historyFor('abc123').directPaths, hasLength(1));
+    expect(service.historyFor('def456').directPaths, hasLength(1));
+
+    await service.clearHistoryFor('abc123');
+
+    expect(service.historyFor('abc123').directPaths, isEmpty);
+    expect(service.historyFor('def456').directPaths, hasLength(1));
+  });
+
+  test('last successful direct path is chosen by location fit', () async {
+    final service = PathHistoryService();
+    final contact = _buildContact(
+      seed: 7,
+      pathBytes: [0xAA],
+      hopCount: 1,
+      hashSize: 1,
+    );
+
+    await service.initialize();
+    await service.recordPathResult(
+      contact.publicKeyHex,
+      PathSelection(
+        mode: PathSelectionMode.directHistorical,
+        pathBytes: Uint8List.fromList([0x11]),
+        hopCount: 1,
+        hashSize: 1,
+      ),
+      success: true,
+      roundTripTimeMs: 120,
+      senderLatitude: 46.0,
+      senderLongitude: 14.0,
+      recipientLatitude: 46.1,
+      recipientLongitude: 14.1,
+    );
+    await service.recordPathResult(
+      contact.publicKeyHex,
+      PathSelection(
+        mode: PathSelectionMode.directHistorical,
+        pathBytes: Uint8List.fromList([0x22]),
+        hopCount: 1,
+        hashSize: 1,
+      ),
+      success: true,
+      roundTripTimeMs: 90,
+      senderLatitude: 46.0001,
+      senderLongitude: 14.0001,
+      recipientLatitude: 46.1001,
+      recipientLongitude: 14.1001,
+    );
+
+    final selection = await service.getLastSuccessfulDirectSelection(
+      contact,
+      excludeSignature: 'aa',
+      senderLatitude: 46.0002,
+      senderLongitude: 14.0002,
+      recipientLatitude: 46.1002,
+      recipientLongitude: 14.1002,
+    );
+
+    expect(selection, isNotNull);
+    expect(selection!.mode, PathSelectionMode.directHistorical);
+    expect(selection.canonicalPath, '22');
+  });
 }

test/widgets/connection_dialog_test.dart

@@ -0,0 +1,129 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_blue_plus/flutter_blue_plus.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:meshcore_sar_app/l10n/app_localizations.dart';
+import 'package:meshcore_sar_app/providers/connection_provider.dart';
+import 'package:meshcore_sar_app/widgets/connection_dialog.dart';
+import 'package:provider/provider.dart';
+
+class _FakeConnectionProvider extends ConnectionProvider {
+  int startScanCalls = 0;
+  int stopScanCalls = 0;
+  bool _isScanning = false;
+
+  @override
+  bool get isScanning => _isScanning;
+
+  @override
+  List<ScannedDevice> get scannedDevices => const [];
+
+  @override
+  String? get error => null;
+
+  @override
+  Future<void> startScan() async {
+    startScanCalls += 1;
+    _isScanning = true;
+    notifyListeners();
+  }
+
+  @override
+  Future<void> stopScan() async {
+    stopScanCalls += 1;
+    _isScanning = false;
+    notifyListeners();
+  }
+}
+
+class _ConnectableFakeConnectionProvider extends ConnectionProvider {
+  int connectCalls = 0;
+
+  @override
+  List<ScannedDevice> get scannedDevices => [
+    ScannedDevice(device: BluetoothDevice.fromId('test-device'), rssi: -55),
+  ];
+
+  @override
+  String? get error => null;
+
+  @override
+  Future<bool> connect(BluetoothDevice device) async {
+    connectCalls += 1;
+    return true;
+  }
+}
+
+void main() {
+  testWidgets('BLE scan waits for explicit user action', (tester) async {
+    final connectionProvider = _FakeConnectionProvider();
+
+    await tester.pumpWidget(
+      ChangeNotifierProvider<ConnectionProvider>.value(
+        value: connectionProvider,
+        child: MaterialApp(
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          supportedLocales: AppLocalizations.supportedLocales,
+          home: const Scaffold(body: ConnectionDialog()),
+        ),
+      ),
+    );
+
+    await tester.pump();
+
+    expect(connectionProvider.startScanCalls, 0);
+    expect(
+      find.text('Press scan to search for nearby devices'),
+      findsOneWidget,
+    );
+    expect(find.text('Scan'), findsOneWidget);
+
+    await tester.tap(find.widgetWithText(FilledButton, 'Scan'));
+    await tester.pump();
+
+    expect(connectionProvider.stopScanCalls, 1);
+    expect(connectionProvider.startScanCalls, 1);
+  });
+
+  testWidgets('successful BLE connect closes the dialog immediately', (
+    tester,
+  ) async {
+    final connectionProvider = _ConnectableFakeConnectionProvider();
+
+    await tester.pumpWidget(
+      ChangeNotifierProvider<ConnectionProvider>.value(
+        value: connectionProvider,
+        child: MaterialApp(
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          supportedLocales: AppLocalizations.supportedLocales,
+          home: Builder(
+            builder: (context) => Scaffold(
+              body: Center(
+                child: FilledButton(
+                  onPressed: () {
+                    showModalBottomSheet<Object?>(
+                      context: context,
+                      isScrollControlled: true,
+                      builder: (_) => const ConnectionDialog(),
+                    );
+                  },
+                  child: const Text('Open'),
+                ),
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+
+    await tester.tap(find.text('Open'));
+    await tester.pumpAndSettle();
+
+    expect(find.byType(ConnectionDialog), findsOneWidget);
+
+    await tester.tap(find.widgetWithText(FilledButton, 'Connect'));
+    await tester.pumpAndSettle();
+
+    expect(connectionProvider.connectCalls, 1);
+    expect(find.byType(ConnectionDialog), findsNothing);
+  });
+}

test/widgets/message_bubble_test.dart

@@ -181,6 +181,44 @@ void main() {
     }
   });
 
+  testWidgets('channel bubbles refresh to synced channel names', (
+    tester,
+  ) async {
+    final harness = await _TestHarness.create();
+    try {
+      final message = Message(
+        id: 'channel-name-refresh',
+        messageType: MessageType.channel,
+        senderPublicKeyPrefix: _prefix(61),
+        channelIdx: 3,
+        pathLen: 0,
+        textType: MessageTextType.plain,
+        senderTimestamp: 1700000000,
+        text: 'Team update',
+        receivedAt: DateTime.fromMillisecondsSinceEpoch(1700000000500),
+        deliveryStatus: MessageDeliveryStatus.sent,
+      );
+
+      await tester.pumpWidget(_buildApp(harness, message));
+      await tester.pumpAndSettle();
+
+      expect(find.text('Channel 3'), findsOneWidget);
+      expect(find.text('#slovenija'), findsNothing);
+
+      harness.channelsProvider.addOrUpdateChannel(
+        index: 3,
+        name: '#slovenija',
+        secret: Uint8List(16),
+      );
+      await tester.pumpAndSettle();
+
+      expect(find.text('#slovenija'), findsOneWidget);
+      expect(find.text('Channel 3'), findsNothing);
+    } finally {
+      await _disposeHarness(tester, harness);
+    }
+  });
+
   testWidgets('message bubble detects and opens links', (tester) async {
     final harness = await _TestHarness.create();
     try {

test/widgets/recipient_selector_sheet_test.dart

@@ -4,6 +4,8 @@ import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:meshcore_sar_app/l10n/app_localizations.dart';
 import 'package:meshcore_sar_app/models/contact.dart';
+import 'package:meshcore_sar_app/models/message.dart';
+import 'package:meshcore_sar_app/providers/messages_provider.dart';
 import 'package:meshcore_sar_app/widgets/messages/recipient_selector_sheet.dart';
 
 void main() {
@@ -31,13 +33,18 @@ void main() {
     );
   }
 
-  Future<void> pumpSheet(WidgetTester tester) async {
-    final channel = buildContact(
-      name: 'Ops',
-      type: ContactType.channel,
-      secondByte: 3,
-    );
-    final contact = buildContact(name: 'John Smith', type: ContactType.chat);
+  Future<void> pumpSheet(
+    WidgetTester tester, {
+    List<Contact>? contacts,
+    List<Contact>? channels,
+    MessagesProvider? messagesProvider,
+    bool showAllOption = true,
+  }) async {
+    final resolvedChannels =
+        channels ??
+        [buildContact(name: 'Ops', type: ContactType.channel, secondByte: 3)];
+    final resolvedContacts =
+        contacts ?? [buildContact(name: 'John Smith', type: ContactType.chat)];
 
     await tester.pumpWidget(
       MaterialApp(
@@ -45,15 +52,17 @@ void main() {
         supportedLocales: AppLocalizations.supportedLocales,
         home: Scaffold(
           body: RecipientSelectorSheet(
-            contacts: [contact],
+            contacts: resolvedContacts,
             rooms: const [],
-            channels: [channel],
+            channels: resolvedChannels,
             unreadCount: 11,
             unreadCountsByPublicKey: {
-              channel.publicKeyHex: 7,
-              contact.publicKeyHex: 3,
+              for (final channel in resolvedChannels) channel.publicKeyHex: 7,
+              for (final contact in resolvedContacts) contact.publicKeyHex: 3,
             },
             currentDestinationType: 'all',
+            showAllOption: showAllOption,
+            messagesProvider: messagesProvider,
             onSelect: (selectedContact, destinationType) {},
           ),
         ),
@@ -150,4 +159,88 @@ void main() {
     expect(charlieY, lessThan(bravoY));
     expect(bravoY, lessThan(alphaY));
   });
+
+  testWidgets('shows channel activity and participants instead of raw ids', (
+    tester,
+  ) async {
+    final channel = buildContact(
+      name: 'Ops',
+      type: ContactType.channel,
+      secondByte: 3,
+    );
+    final messagesProvider = MessagesProvider()
+      ..addMessage(
+        Message(
+          id: 'channel-activity',
+          messageType: MessageType.channel,
+          senderName: 'Radio Alpha',
+          channelIdx: 3,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp:
+              DateTime.now()
+                  .subtract(const Duration(minutes: 5))
+                  .millisecondsSinceEpoch ~/
+              1000,
+          text: 'status update',
+          receivedAt: DateTime.now().subtract(const Duration(minutes: 5)),
+        ),
+      );
+
+    await pumpSheet(
+      tester,
+      contacts: const [],
+      channels: [channel],
+      messagesProvider: messagesProvider,
+      showAllOption: false,
+    );
+
+    expect(
+      find.byKey(Key('channel-participants-${channel.publicKeyHex}')),
+      findsOneWidget,
+    );
+    expect(find.text('Radio Alpha'), findsNothing);
+    expect(find.text('5m ago'), findsOneWidget);
+    expect(find.textContaining('Channel 3'), findsNothing);
+    expect(find.text(channel.publicKeyShort.toUpperCase()), findsNothing);
+  });
+
+  testWidgets('shows contact activity instead of the public key', (
+    tester,
+  ) async {
+    final contact = buildContact(
+      name: 'John Smith',
+      type: ContactType.chat,
+      secondByte: 4,
+    );
+    final messagesProvider = MessagesProvider()
+      ..addMessage(
+        Message(
+          id: 'contact-activity',
+          messageType: MessageType.contact,
+          recipientPublicKey: contact.publicKey,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp:
+              DateTime.now()
+                  .subtract(const Duration(hours: 2))
+                  .millisecondsSinceEpoch ~/
+              1000,
+          text: 'check-in',
+          receivedAt: DateTime.now().subtract(const Duration(hours: 2)),
+        ),
+      );
+
+    await pumpSheet(
+      tester,
+      contacts: [contact],
+      channels: const [],
+      messagesProvider: messagesProvider,
+      showAllOption: false,
+    );
+
+    expect(find.text('John Smith'), findsOneWidget);
+    expect(find.text('2h ago'), findsOneWidget);
+    expect(find.text(contact.publicKeyShort), findsNothing);
+  });
 }

test/widgets/sensor_telemetry_card_test.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_map/flutter_map.dart' as flutter_map;
 import 'package:flutter_test/flutter_test.dart';
+import 'package:latlong2/latlong.dart';
 import 'package:meshcore_sar_app/l10n/app_localizations.dart';
 import 'package:meshcore_sar_app/models/contact.dart';
 import 'package:meshcore_sar_app/providers/sensors_provider.dart';
@@ -140,6 +142,8 @@ void main() {
   });
 
   testWidgets('renders MeshCore custom weather metrics', (tester) async {
+    tester.platformDispatcher.localeTestValue = const Locale('sl', 'SI');
+    addTearDown(tester.platformDispatcher.clearLocaleTestValue);
     final publicKey = Uint8List(32);
     publicKey[0] = 0x46;
     final contact = Contact(
@@ -185,11 +189,130 @@ void main() {
     expect(find.text('Wind gust'), findsOneWidget);
     expect(find.text('Dew point'), findsOneWidget);
     expect(find.text('Rain'), findsOneWidget);
-    expect(find.text('3.7 m/s'), findsOneWidget);
+    expect(find.textContaining('km/h'), findsOneWidget);
+    expect(find.textContaining('m/s'), findsNothing);
     expect(find.text('2°C'), findsOneWidget);
     expect(find.text('12.3 mm'), findsOneWidget);
   });
 
+  testWidgets('renders speed in mph for imperial system locale', (
+    tester,
+  ) async {
+    tester.platformDispatcher.localeTestValue = const Locale('en', 'US');
+    addTearDown(tester.platformDispatcher.clearLocaleTestValue);
+
+    final publicKey = Uint8List(32);
+    publicKey[0] = 0x4A;
+    final contact = Contact(
+      publicKey: publicKey,
+      type: ContactType.sensor,
+      flags: 0,
+      outPathLen: 0,
+      outPath: Uint8List(64),
+      advName: 'WX Station',
+      lastAdvert: DateTime.now().millisecondsSinceEpoch ~/ 1000,
+      advLat: 0,
+      advLon: 0,
+      lastMod: DateTime.now().millisecondsSinceEpoch ~/ 1000,
+      telemetry: ContactTelemetry(
+        timestamp: DateTime.now().subtract(const Duration(minutes: 1)),
+        extraSensorData: const {'speed_2': 3.7},
+      ),
+    );
+
+    await tester.pumpWidget(
+      MaterialApp(
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: Scaffold(
+          body: SensorTelemetryCard(
+            contact: contact,
+            state: SensorRefreshState.idle,
+            visibleFields: const {'extra:speed_2'},
+            fieldSpans: sensorFullWidthFieldSpans(const {'extra:speed_2'}),
+          ),
+        ),
+      ),
+    );
+
+    expect(find.textContaining('mph'), findsOneWidget);
+    expect(find.textContaining('m/s'), findsNothing);
+  });
+
+  testWidgets('gps preview map recenters when telemetry location changes', (
+    tester,
+  ) async {
+    final publicKey = Uint8List(32);
+    publicKey[0] = 0x4B;
+
+    Contact buildGpsContact(double latitude, double longitude) => Contact(
+      publicKey: publicKey,
+      type: ContactType.sensor,
+      flags: 0,
+      outPathLen: 0,
+      outPath: Uint8List(64),
+      advName: 'GPS Station',
+      lastAdvert: DateTime.now().millisecondsSinceEpoch ~/ 1000,
+      advLat: 0,
+      advLon: 0,
+      lastMod: DateTime.now().millisecondsSinceEpoch ~/ 1000,
+      telemetry: ContactTelemetry(
+        gpsLocation: LatLng(latitude, longitude),
+        timestamp: DateTime.now().subtract(const Duration(minutes: 1)),
+      ),
+    );
+
+    var contact = buildGpsContact(46.0569, 14.5058);
+
+    await tester.pumpWidget(
+      StatefulBuilder(
+        builder: (context, setState) {
+          return MaterialApp(
+            localizationsDelegates: AppLocalizations.localizationsDelegates,
+            supportedLocales: AppLocalizations.supportedLocales,
+            home: Scaffold(
+              body: Column(
+                children: [
+                  ElevatedButton(
+                    onPressed: () {
+                      setState(() {
+                        contact = buildGpsContact(46.1000, 14.6000);
+                      });
+                    },
+                    child: const Text('Update'),
+                  ),
+                  SensorTelemetryCard(
+                    contact: contact,
+                    state: SensorRefreshState.idle,
+                    visibleFields: const {'gps'},
+                    fieldSpans: sensorFullWidthFieldSpans(const {'gps'}),
+                  ),
+                ],
+              ),
+            ),
+          );
+        },
+      ),
+    );
+
+    final initialMap = tester.widget<flutter_map.FlutterMap>(
+      find.byType(flutter_map.FlutterMap).first,
+    );
+    final initialCenter = initialMap.mapController!.camera.center;
+    expect(initialCenter.latitude, closeTo(46.0569, 0.0001));
+    expect(initialCenter.longitude, closeTo(14.5058, 0.0001));
+
+    await tester.tap(find.text('Update'));
+    await tester.pump();
+
+    final updatedMap = tester.widget<flutter_map.FlutterMap>(
+      find.byType(flutter_map.FlutterMap).first,
+    );
+    final updatedCenter = updatedMap.mapController!.camera.center;
+    expect(updatedCenter.latitude, closeTo(46.1000, 0.0001));
+    expect(updatedCenter.longitude, closeTo(14.6000, 0.0001));
+  });
+
   testWidgets('renders generic percentage separately from UV for weather payload', (tester) async {
     tester.view.physicalSize = const Size(1600, 2600);
     tester.view.devicePixelRatio = 1.0;
@@ -415,8 +538,11 @@ void main() {
       ),
     );
 
+    final scaffoldKey = GlobalKey<ScaffoldMessengerState>();
+
     await tester.pumpWidget(
       MaterialApp(
+        scaffoldMessengerKey: scaffoldKey,
         localizationsDelegates: AppLocalizations.localizationsDelegates,
         supportedLocales: AppLocalizations.supportedLocales,
         home: Scaffold(
@@ -431,15 +557,43 @@ void main() {
     );
 
     await tester.tap(find.byIcon(Icons.more_vert));
-    await tester.pumpAndSettle();
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 300));
 
     expect(find.text('Copy raw response'), findsOneWidget);
 
+    // Capture clipboard writes via the test platform channel mock.
+    String? clipboardText;
+    tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+      SystemChannels.platform,
+      (MethodCall call) async {
+        if (call.method == 'Clipboard.setData') {
+          final args = call.arguments as Map<dynamic, dynamic>;
+          clipboardText = args['text'] as String?;
+        }
+        if (call.method == 'Clipboard.getData') {
+          return <String, dynamic>{'text': clipboardText};
+        }
+        return null;
+      },
+    );
+    addTearDown(() {
+      tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+        SystemChannels.platform,
+        null,
+      );
+    });
+
     await tester.tap(find.text('Copy raw response'));
     await tester.pump();
+    await tester.pump(const Duration(milliseconds: 300));
 
-    final clipboardData = await Clipboard.getData(Clipboard.kTextPlain);
-    expect(clipboardData?.text, '01 67 00 d7');
+    expect(clipboardText, '01 67 00 d7');
     expect(find.text('Raw response copied'), findsOneWidget);
+
+    // Clear the SnackBar to prevent its timer from blocking teardown.
+    scaffoldKey.currentState?.clearSnackBars();
+    await tester.pump(const Duration(seconds: 5));
+    await tester.pump(const Duration(seconds: 5));
   });
 }