Align and compact channel cards

Align channel avatars and compact
Hide last seen and tweak channels
2026-08-11 16:30:28 +00:00 · 2026-03-10 09:45:16 +01:00 · 2026-03-10 09:13:24 +01:00 · 2026-03-10 09:06:30 +01:00 · 2026-03-10 08:54:55 +01:00 · 2026-03-10 08:48:04 +01:00
38 changed files with 1708 additions and 895 deletions
--- a/.github/workflows/build-artifacts.yml
+++ b/.github/workflows/build-artifacts.yml
@@ -280,7 +280,7 @@ jobs:
        run: flutter pub get

      - name: Build web release
-        run: flutter build web --release --base-href /meshcore_sar_app/
+        run: flutter build web --release --base-href /meshcore-sar/

      - name: Upload pages artifact
        uses: actions/upload-pages-artifact@v3
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@

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

 ## Highlights

--- a/ios/Runner.xcodeproj/project.pbxproj
+++ b/ios/Runner.xcodeproj/project.pbxproj
@@ -489,7 +489,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				CURRENT_PROJECT_VERSION = 106;
+				CURRENT_PROJECT_VERSION = 107;
 				DEVELOPMENT_TEAM = JND55328G8;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
@@ -511,7 +511,7 @@
 			buildSettings = {
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 106;
+				CURRENT_PROJECT_VERSION = 107;
 				DEVELOPMENT_TEAM = JND55328G8;
 				GENERATE_INFOPLIST_FILE = YES;
 				MARKETING_VERSION = 1.0;
@@ -530,7 +530,7 @@
 			buildSettings = {
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 106;
+				CURRENT_PROJECT_VERSION = 107;
 				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 = 106;
+				CURRENT_PROJECT_VERSION = 107;
 				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 = 106;
+				CURRENT_PROJECT_VERSION = 107;
 				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 = 106;
+				CURRENT_PROJECT_VERSION = 107;
 				DEVELOPMENT_TEAM = JND55328G8;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
--- a/ios/Runner/AppDelegate.swift
+++ b/ios/Runner/AppDelegate.swift
@@ -1,5 +1,6 @@
 import UIKit
 import Flutter
+import UserNotifications

@main
@objc class AppDelegate: FlutterAppDelegate {
@@ -8,6 +9,7 @@ import Flutter
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
+    UNUserNotificationCenter.current().delegate = self as UNUserNotificationCenterDelegate
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
 }
--- a/ios/Runner/Info.plist
+++ b/ios/Runner/Info.plist
@@ -43,7 +43,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>106</string>
+	<string>107</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>ITSAppUsesNonExemptEncryption</key>
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,4 +1,7 @@
-import 'dart:io' show Platform;
+import 'dart:async';
+
+import 'package:flutter/foundation.dart'
+    show TargetPlatform, defaultTargetPlatform, kIsWeb;
 import 'package:flutter/material.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:provider/provider.dart';
@@ -19,6 +22,7 @@ import 'services/voice_codec_service.dart';
 import 'services/voice_player_service.dart';
 import 'services/notification_service.dart';
 import 'services/locale_preferences.dart';
+import 'services/mesh_map_nodes_service.dart';
 import 'services/update_checker_service.dart';
 import 'services/wizard_preferences.dart';
 import 'screens/home_screen.dart';
@@ -70,6 +74,9 @@ class _MeshCoreSarAppState extends State<MeshCoreSarApp> {
    // Shows notification if update is available
    _checkForUpdates();

+    // Refresh remote mesh node cache in background when the app starts.
+    unawaited(MeshMapNodesService.syncInBackgroundIfStale());
+
    setState(() {
      _wizardCompleted = wizardCompleted;
      _isInitialized = true;
@@ -158,7 +165,7 @@ class _MeshCoreSarAppState extends State<MeshCoreSarApp> {
  /// Shows notification if update is available
  Future<void> _checkForUpdates() async {
    // Only check for updates on Android
-    if (!Platform.isAndroid) {
+    if (kIsWeb || defaultTargetPlatform != TargetPlatform.android) {
      debugPrint('[UpdateChecker] Skipping update check (not Android)');
      return;
    }
@@ -324,7 +331,7 @@ class _MeshCoreSarAppState extends State<MeshCoreSarApp> {

        // Wrap in SafeArea for Android only to fix navigation bar overlap (API ≥36)
        // iOS doesn't need SafeArea wrapping (causes extra black space at bottom)
-        if (Platform.isAndroid) {
+        if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
          return SafeArea(
            left: false,
            right: false,
--- a/lib/models/contact.dart
+++ b/lib/models/contact.dart
@@ -240,6 +240,5 @@ extension ContactLocalization on Contact {
    return '$routeHopCount hop${routeHopCount == 1 ? '' : 's'} via $routeHashSize-byte hashes';
  }

-  bool get routeSupportsLegacyRawTransport =>
-      routeHasPath && routeSignedPathLen >= 0;
+  bool get routeSupportsLegacyRawTransport => routeHasPath;
 }
--- a/lib/providers/app_provider.dart
+++ b/lib/providers/app_provider.dart
@@ -29,6 +29,7 @@ import '../utils/image_message_parser.dart';
 import '../utils/media_swarm_protocol.dart';
 import '../utils/message_airtime_estimator.dart';
 import '../utils/fast_gps_packet.dart';
+import '../utils/log_rx_route_decoder.dart';

 class _DirectMessageRouteSession {
  final PathSelection currentSelection;
@@ -1973,14 +1974,13 @@ class AppProvider with ChangeNotifier {
    if (requester == null ||
        !requester.routeHasPath ||
        requester.routeHopCount > _maxDirectPayloadHops ||
-        !requester.routeSupportsLegacyRawTransport ||
        requester.outPath.isEmpty) {
      return;
    }
    unawaited(
      connectionProvider.sendRawVoicePacket(
        contactPath: requester.outPath,
-        contactPathLen: requester.routeSignedPathLen,
+        contactPathLen: requester.routeEncodedPathLen,
        payload: availability.encodeBinary(),
      ),
    );
@@ -2050,7 +2050,7 @@ class AppProvider with ChangeNotifier {
        for (final peer in peers) {
          await connectionProvider.sendRawVoicePacket(
            contactPath: peer.outPath,
-            contactPathLen: peer.routeSignedPathLen,
+            contactPathLen: peer.routeEncodedPathLen,
            payload: request.encodeBinary(),
          );
        }
@@ -2073,7 +2073,6 @@ class AppProvider with ChangeNotifier {
          if (responder == null ||
              !responder.routeHasPath ||
              responder.routeHopCount > _maxDirectPayloadHops ||
-              !responder.routeSupportsLegacyRawTransport ||
              responder.outPath.isEmpty) {
            continue;
          }
@@ -2165,7 +2164,7 @@ class AppProvider with ChangeNotifier {

      await connectionProvider.sendRawVoicePacket(
        contactPath: target.outPath,
-        contactPathLen: target.routeSignedPathLen,
+        contactPathLen: target.routeEncodedPathLen,
        payload: payload,
      );
      return true;
@@ -2406,9 +2405,6 @@ class AppProvider with ChangeNotifier {
    if (!target.routeHasPath || target.routeHopCount > _maxDirectPayloadHops) {
      return false;
    }
-    if (!target.routeSupportsLegacyRawTransport) {
-      return false;
-    }
    if (target.outPath.isEmpty) {
      return false;
    }
@@ -2441,7 +2437,7 @@ class AppProvider with ChangeNotifier {
        );
        await connectionProvider.sendRawVoicePacket(
          contactPath: target.outPath,
-          contactPathLen: target.routeSignedPathLen,
+          contactPathLen: target.routeEncodedPathLen,
          payload: RawRouteProbeRequest(
            nonce: nonce,
            requesterKey6: requesterKey6,
@@ -2469,7 +2465,7 @@ class AppProvider with ChangeNotifier {
    if (target.publicKeyHex.isNotEmpty) {
      return 'pk:${target.publicKeyHex}';
    }
-    return 'name:${target.advName}:${target.routeSignedPathLen}:${target.outPath.map((b) => b.toRadixString(16).padLeft(2, '0')).join()}';
+    return 'name:${target.advName}:${target.routeEncodedPathLen}:${target.outPath.map((b) => b.toRadixString(16).padLeft(2, '0')).join()}';
  }

  void _handleRawRouteProbeRequest(RawRouteProbeRequest request) {
@@ -2487,9 +2483,6 @@ class AppProvider with ChangeNotifier {
      );
      return;
    }
-    if (!requester.routeSupportsLegacyRawTransport) {
-      return;
-    }
    if (requester.outPath.isEmpty) {
      return;
    }
@@ -2499,7 +2492,7 @@ class AppProvider with ChangeNotifier {
    unawaited(
      connectionProvider.sendRawVoicePacket(
        contactPath: requester.outPath,
-        contactPathLen: requester.routeSignedPathLen,
+        contactPathLen: requester.routeEncodedPathLen,
        payload: RawRouteProbeAck(nonce: request.nonce).encodeBinary(),
      ),
    );
@@ -2573,12 +2566,10 @@ class AppProvider with ChangeNotifier {
      if (log.responseCode != 0x88) continue;
      if (log.rawData.length < 6) continue;

-      final raw = log.rawData;
-      final payloadType = (raw[3] >> 2) & 0x0F;
-      final pathLen = raw[4];
-      if (payloadType != expectedPayloadType) continue;
-      if (pathLen != message.pathLen) continue;
-      if (raw.length < 5 + pathLen) continue;
+      final decoded = LogRxRouteDecoder.decode(log.rawData);
+      if (decoded == null) continue;
+      if (decoded.payloadType != expectedPayloadType) continue;
+      if (decoded.hopCount != message.pathLen) continue;

      final deltaMs =
          (log.timestamp.difference(message.receivedAt).inMilliseconds).abs();
@@ -2594,11 +2585,9 @@ class AppProvider with ChangeNotifier {

  List<int>? _extractPathBytesFromLog(BlePacketLog? log) {
    if (log == null) return null;
-    final raw = log.rawData;
-    if (raw.length < 6) return null;
-    final pathLen = raw[4];
-    if (pathLen <= 0 || raw.length < 5 + pathLen) return null;
-    return raw.sublist(5, 5 + pathLen);
+    final decoded = LogRxRouteDecoder.decode(log.rawData);
+    if (decoded == null || decoded.pathBytes.isEmpty) return null;
+    return decoded.pathBytes;
  }

  // Removed _syncMessages() - messages are automatically synced via PUSH_CODE_MSG_WAITING events
--- a/lib/providers/connection_provider.dart
+++ b/lib/providers/connection_provider.dart
@@ -486,6 +486,14 @@ class ConnectionProvider with ChangeNotifier {
  /// Start scanning for MeshCore devices
  Future<void> startScan() async {
    debugPrint('🔍 [Provider] startScan() called');
+    if (_deviceInfo.connectionState == ConnectionState.connecting ||
+        _deviceInfo.connectionState == ConnectionState.connected) {
+      debugPrint(
+        '⏭️ [Provider] Ignoring scan request while connection is active: ${_deviceInfo.connectionState}',
+      );
+      return;
+    }
+
    _isScanning = true;
    _scannedDevices.clear();
    _error = null;
@@ -559,6 +567,11 @@ class ConnectionProvider with ChangeNotifier {
      '🔵 [Provider] connect() called for device: ${device.platformName}',
    );

+    if (_isScanning) {
+      debugPrint('🔵 [Provider] Stopping active scan before connect()');
+      await stopScan();
+    }
+
    _deviceInfo = _deviceInfo.copyWith(
      deviceId: device.remoteId.toString(),
      deviceName: device.platformName.isNotEmpty
--- a/lib/providers/helpers/raw_session_retransmit.dart
+++ b/lib/providers/helpers/raw_session_retransmit.dart
@@ -38,12 +38,6 @@ Future<bool> serveCachedSessionFragments<T>({
    );
    return false;
  }
-  if (!requester.routeSupportsLegacyRawTransport) {
-    debugPrint(
-      '⚠️ [$providerLabel] ${requester.advName} route uses unsupported 3-byte raw transport on current client',
-    );
-    return false;
-  }
  if (requester.outPath.isEmpty) {
    debugPrint(
      '⚠️ [$providerLabel] ${requester.advName} has empty outPath payload',
@@ -64,7 +58,7 @@ Future<bool> serveCachedSessionFragments<T>({
    try {
      await sendRawPacket(
        contactPath: requester.outPath,
-        contactPathLen: requester.routeSignedPathLen,
+        contactPathLen: requester.routeEncodedPathLen,
        payload: encodeBinary(fragment),
      );
      servedCount++;
--- a/lib/providers/messages_provider.dart
+++ b/lib/providers/messages_provider.dart
@@ -765,14 +765,14 @@ class MessagesProvider with ChangeNotifier {
      final seconds = (voiceEnvelope.durationMs / 1000).ceil();
      final summary =
          'Voice message - ${voiceEnvelope.mode.label} - ${seconds}s - ${voiceEnvelope.total} packets';
-      return isChannelMessage ? '$senderName\n$summary' : summary;
+      return summary;
    }

    final imageEnvelope = ImageEnvelope.tryParse(message.text);
    if (imageEnvelope != null) {
      final summary =
          'Image - ${imageEnvelope.format.label} - ${imageEnvelope.width}x${imageEnvelope.height} - ${_formatBytes(imageEnvelope.sizeBytes)}';
-      return isChannelMessage ? '$senderName\n$summary' : summary;
+      return summary;
    }

    if (!isChannelMessage && message.recipientPublicKey != null) {
@@ -785,10 +785,6 @@ class MessagesProvider with ChangeNotifier {
      }
    }

-    if (isChannelMessage) {
-      return '$senderName\n${message.text}';
-    }
-
    return message.text;
  }

@@ -889,6 +885,54 @@ class MessagesProvider with ChangeNotifier {
    }
  }

+  /// Mark unread messages for a specific destination as read.
+  void markDestinationAsRead({
+    required String destinationType,
+    Contact? contact,
+  }) {
+    if (destinationType == 'all') {
+      markAllAsRead();
+      return;
+    }
+
+    bool hasChanges = false;
+    for (int i = 0; i < _messages.length; i++) {
+      final message = _messages[i];
+      if (message.isRead || message.isSentMessage || message.isSystemMessage) {
+        continue;
+      }
+
+      final matchesDestination = switch (destinationType) {
+        'channel' => _isChannelMessageForContact(message, contact),
+        'contact' || 'room' => contact != null && _isMessageForDestination(message, contact),
+        _ => false,
+      };
+
+      if (!matchesDestination) {
+        continue;
+      }
+
+      _messages[i] = message.copyWith(isRead: true);
+      hasChanges = true;
+    }
+
+    if (hasChanges) {
+      _persistMessages();
+      notifyListeners();
+    }
+  }
+
+  bool _isChannelMessageForContact(Message message, Contact? contact) {
+    if (!message.isChannelMessage) {
+      return false;
+    }
+
+    final selectedChannelIdx = contact != null && contact.publicKey.length > 1
+        ? contact.publicKey[1]
+        : 0;
+    return (message.channelIdx ?? 0) == selectedChannelIdx;
+  }
+
  /// Mark a specific message as read
  void markAsRead(String messageId) {
    final index = _messages.indexWhere((m) => m.id == messageId);
--- a/lib/screens/contacts_tab.dart
+++ b/lib/screens/contacts_tab.dart
@@ -7,6 +7,11 @@ import '../models/contact.dart';
 import '../providers/contacts_provider.dart';
 import '../providers/app_provider.dart';
 import '../providers/connection_provider.dart';
+import '../providers/messages_provider.dart';
+import '../services/message_destination_preferences.dart';
+import '../utils/contact_grouping.dart';
+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';

@@ -27,6 +32,11 @@ class ContactsTab extends StatefulWidget {
 class _ContactsTabState extends State<ContactsTab> {
  Position? _currentPosition;
  final Set<String> _resolvingAdvertKeys = <String>{};
+  final Map<ContactSection, ContactSortMode> _sortModes = {
+    ContactSection.teamMembers: ContactSortMode.lastSeen,
+    ContactSection.repeaters: ContactSortMode.lastSeen,
+    ContactSection.rooms: ContactSortMode.lastSeen,
+  };

  @override
  void initState() {
@@ -125,20 +135,31 @@ class _ContactsTabState extends State<ContactsTab> {
    return l10n.daysAgo(diff.inDays);
  }

-  List<Contact> _sortContactsByDistance(List<Contact> contacts) {
+  List<Contact> _sortContacts(List<Contact> contacts, ContactSection section) {
    final sorted = List<Contact>.from(contacts);
+    if (section == ContactSection.channels) {
+      sorted.sort(
+        (a, b) =>
+            a.displayName.toLowerCase().compareTo(b.displayName.toLowerCase()),
+      );
+      return sorted;
+    }
+
+    final sortMode = _sortModes[section] ?? ContactSortMode.lastSeen;

    sorted.sort((a, b) {
-      final distanceA = _distanceFromCurrentPosition(a);
-      final distanceB = _distanceFromCurrentPosition(b);
+      if (sortMode == ContactSortMode.distance) {
+        final distanceA = _distanceFromCurrentPosition(a);
+        final distanceB = _distanceFromCurrentPosition(b);

-      if (distanceA != null && distanceB != null) {
-        final distanceCompare = distanceA.compareTo(distanceB);
-        if (distanceCompare != 0) return distanceCompare;
-      } else if (distanceA != null) {
-        return -1;
-      } else if (distanceB != null) {
-        return 1;
+        if (distanceA != null && distanceB != null) {
+          final distanceCompare = distanceA.compareTo(distanceB);
+          if (distanceCompare != 0) return distanceCompare;
+        } else if (distanceA != null) {
+          return -1;
+        } else if (distanceB != null) {
+          return 1;
+        }
      }

      return b.lastSeenTime.compareTo(a.lastSeenTime);
@@ -208,12 +229,23 @@ class _ContactsTabState extends State<ContactsTab> {
    return Scaffold(
      body: Consumer<ContactsProvider>(
        builder: (context, contactsProvider, child) {
-          final chatContacts = _sortContactsByDistance(
+          final messagesProvider = context.watch<MessagesProvider>();
+          final chatContacts = _sortContacts(
            contactsProvider.chatContacts,
+            ContactSection.teamMembers,
+          );
+          final repeaters = _sortContacts(
+            contactsProvider.repeaters,
+            ContactSection.repeaters,
+          );
+          final rooms = _sortContacts(
+            contactsProvider.rooms,
+            ContactSection.rooms,
+          );
+          final channels = _sortContacts(
+            contactsProvider.channels,
+            ContactSection.channels,
          );
-          final repeaters = _sortContactsByDistance(contactsProvider.repeaters);
-          final rooms = _sortContactsByDistance(contactsProvider.rooms);
-          final channels = _sortContactsByDistance(contactsProvider.channels);
          final pendingAdverts = contactsProvider.pendingAdverts;

          // Check if there are any displayable contacts
@@ -282,17 +314,12 @@ class _ContactsTabState extends State<ContactsTab> {
                    title: l10n.teamMembers,
                    count: chatContacts.length,
                    icon: Icons.people,
-                  ),
-                  ...chatContacts.map(
-                    (contact) => ContactTile(
-                      contact: contact,
-                      currentPosition: _currentPosition,
-                      calculateDistance: _calculateDistanceInMeters,
-                      formatDistance: _formatDistance,
-                      onNavigateToMap: widget.onNavigateToMap,
-                      onNavigateToMessages: widget.onNavigateToMessages,
+                    trailing: _buildSortMenu(
+                      context,
+                      ContactSection.teamMembers,
                    ),
                  ),
+                  ..._buildContactSectionItems(chatContacts),
                  const Divider(height: 32),
                ],

@@ -302,17 +329,9 @@ class _ContactsTabState extends State<ContactsTab> {
                    title: l10n.repeaters,
                    count: repeaters.length,
                    icon: Icons.router,
+                    trailing: _buildSortMenu(context, ContactSection.repeaters),
                  ),
-                  ...repeaters.map(
-                    (contact) => ContactTile(
-                      contact: contact,
-                      currentPosition: _currentPosition,
-                      calculateDistance: _calculateDistanceInMeters,
-                      formatDistance: _formatDistance,
-                      onNavigateToMap: widget.onNavigateToMap,
-                      onNavigateToMessages: widget.onNavigateToMessages,
-                    ),
-                  ),
+                  ..._buildContactSectionItems(repeaters),
                  const Divider(height: 32),
                ],

@@ -322,17 +341,9 @@ class _ContactsTabState extends State<ContactsTab> {
                    title: l10n.rooms,
                    count: rooms.length,
                    icon: Icons.tag,
+                    trailing: _buildSortMenu(context, ContactSection.rooms),
                  ),
-                  ...rooms.map(
-                    (contact) => ContactTile(
-                      contact: contact,
-                      currentPosition: _currentPosition,
-                      calculateDistance: _calculateDistanceInMeters,
-                      formatDistance: _formatDistance,
-                      onNavigateToMap: widget.onNavigateToMap,
-                      onNavigateToMessages: widget.onNavigateToMessages,
-                    ),
-                  ),
+                  ..._buildContactSectionItems(rooms),
                  const Divider(height: 32),
                ],

@@ -344,12 +355,10 @@ class _ContactsTabState extends State<ContactsTab> {
                ),
                if (channels.isNotEmpty) ...[
                  ...channels.map(
-                    (contact) => ContactTile(
-                      contact: contact,
-                      currentPosition: _currentPosition,
-                      calculateDistance: _calculateDistanceInMeters,
-                      formatDistance: _formatDistance,
-                      onNavigateToMap: widget.onNavigateToMap,
+                    (channel) => _ChannelActivityCard(
+                      channel: channel,
+                      messagesProvider: messagesProvider,
+                      contactsProvider: contactsProvider,
                      onNavigateToMessages: widget.onNavigateToMessages,
                    ),
                  ),
@@ -381,8 +390,97 @@ class _ContactsTabState extends State<ContactsTab> {
      ),
    );
  }
+
+  List<Widget> _buildContactSectionItems(List<Contact> contacts) {
+    final items = ContactGrouping.buildItemsFromSorted(contacts);
+
+    return items.map((item) {
+      if (item.isGroup) {
+        return _InferredContactGroupCard(
+          label: item.group!.label,
+          contacts: item.group!.contacts,
+          currentPosition: _currentPosition,
+          calculateDistance: _calculateDistanceInMeters,
+          formatDistance: _formatDistance,
+          onNavigateToMap: widget.onNavigateToMap,
+          onNavigateToMessages: widget.onNavigateToMessages,
+        );
+      }
+
+      return ContactTile(
+        contact: item.contact!,
+        currentPosition: _currentPosition,
+        calculateDistance: _calculateDistanceInMeters,
+        formatDistance: _formatDistance,
+        onNavigateToMap: widget.onNavigateToMap,
+        onNavigateToMessages: widget.onNavigateToMessages,
+      );
+    }).toList();
+  }
+
+  Widget _buildSortMenu(BuildContext context, ContactSection section) {
+    final l10n = AppLocalizations.of(context)!;
+    final selectedMode = _sortModes[section] ?? ContactSortMode.lastSeen;
+    final colorScheme = Theme.of(context).colorScheme;
+
+    return PopupMenuButton<ContactSortMode>(
+      tooltip: 'Sort',
+      initialValue: selectedMode,
+      onSelected: (sortMode) {
+        setState(() {
+          _sortModes[section] = sortMode;
+        });
+      },
+      itemBuilder: (context) => [
+        PopupMenuItem<ContactSortMode>(
+          value: ContactSortMode.lastSeen,
+          child: Row(
+            children: [
+              Icon(
+                Icons.schedule,
+                size: 18,
+                color: selectedMode == ContactSortMode.lastSeen
+                    ? colorScheme.primary
+                    : null,
+              ),
+              const SizedBox(width: 8),
+              Text(l10n.lastSeen),
+            ],
+          ),
+        ),
+        PopupMenuItem<ContactSortMode>(
+          value: ContactSortMode.distance,
+          child: Row(
+            children: [
+              Icon(
+                Icons.near_me,
+                size: 18,
+                color: selectedMode == ContactSortMode.distance
+                    ? colorScheme.primary
+                    : null,
+              ),
+              const SizedBox(width: 8),
+              Text(l10n.distance),
+            ],
+          ),
+        ),
+      ],
+      child: Padding(
+        padding: const EdgeInsets.all(4),
+        child: Icon(
+          Icons.more_horiz,
+          size: 18,
+          color: colorScheme.onSurfaceVariant,
+        ),
+      ),
+    );
+  }
 }

+enum ContactSortMode { lastSeen, distance }
+
+enum ContactSection { teamMembers, repeaters, rooms, channels }
+
 class _PendingAdvertTile extends StatelessWidget {
  final PendingAdvert advert;
  final String subtitle;
@@ -427,11 +525,13 @@ class _SectionHeader extends StatelessWidget {
  final String title;
  final int count;
  final IconData icon;
+  final Widget? trailing;

  const _SectionHeader({
    required this.title,
    required this.count,
    required this.icon,
+    this.trailing,
  });

  @override
@@ -460,6 +560,415 @@ class _SectionHeader extends StatelessWidget {
              style: Theme.of(context).textTheme.labelSmall,
            ),
          ),
+          if (trailing != null) ...[const Spacer(), trailing!],
+        ],
+      ),
+    );
+  }
+}
+
+class _InferredContactGroupCard extends StatelessWidget {
+  final String label;
+  final List<Contact> contacts;
+  final Position? currentPosition;
+  final double Function(double, double, double, double) calculateDistance;
+  final String Function(double) formatDistance;
+  final VoidCallback? onNavigateToMap;
+  final VoidCallback? onNavigateToMessages;
+
+  const _InferredContactGroupCard({
+    required this.label,
+    required this.contacts,
+    required this.currentPosition,
+    required this.calculateDistance,
+    required this.formatDistance,
+    required this.onNavigateToMap,
+    required this.onNavigateToMessages,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+
+    return Container(
+      margin: const EdgeInsets.only(bottom: 12),
+      decoration: BoxDecoration(
+        color: colorScheme.surfaceContainerLow,
+        borderRadius: BorderRadius.circular(18),
+        border: Border.all(
+          color: colorScheme.outlineVariant.withValues(alpha: 0.35),
+        ),
+      ),
+      child: Theme(
+        data: Theme.of(context).copyWith(dividerColor: Colors.transparent),
+        child: ExpansionTile(
+          tilePadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 2),
+          childrenPadding: const EdgeInsets.fromLTRB(12, 0, 12, 8),
+          initiallyExpanded: false,
+          leading: Icon(
+            Icons.folder_copy_outlined,
+            size: 18,
+            color: colorScheme.primary,
+          ),
+          title: Row(
+            children: [
+              Expanded(
+                child: Text(
+                  label,
+                  style: Theme.of(
+                    context,
+                  ).textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w800),
+                ),
+              ),
+              const SizedBox(width: 8),
+              Container(
+                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
+                decoration: BoxDecoration(
+                  color: colorScheme.primaryContainer,
+                  borderRadius: BorderRadius.circular(999),
+                ),
+                child: Text(
+                  contacts.length.toString(),
+                  style: Theme.of(context).textTheme.labelSmall,
+                ),
+              ),
+            ],
+          ),
+          children: [
+            ...contacts.map(
+              (contact) => ContactTile(
+                contact: contact,
+                currentPosition: currentPosition,
+                calculateDistance: calculateDistance,
+                formatDistance: formatDistance,
+                onNavigateToMap: onNavigateToMap,
+                onNavigateToMessages: onNavigateToMessages,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _ChannelActivityCard extends StatelessWidget {
+  final Contact channel;
+  final MessagesProvider messagesProvider;
+  final ContactsProvider contactsProvider;
+  final VoidCallback? onNavigateToMessages;
+
+  const _ChannelActivityCard({
+    required this.channel,
+    required this.messagesProvider,
+    required this.contactsProvider,
+    required this.onNavigateToMessages,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+    final channelIdx = channel.publicKey.length > 1 ? channel.publicKey[1] : 0;
+    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 Container(
+      margin: const EdgeInsets.only(bottom: 8),
+      decoration: BoxDecoration(
+        borderRadius: BorderRadius.circular(18),
+        gradient: LinearGradient(
+          begin: Alignment.topLeft,
+          end: Alignment.bottomRight,
+          colors: [
+            colorScheme.surfaceContainerLow,
+            colorScheme.tertiaryContainer.withValues(alpha: 0.45),
+          ],
+        ),
+        border: Border.all(
+          color: colorScheme.outlineVariant.withValues(alpha: 0.35),
+        ),
+      ),
+      child: Material(
+        color: Colors.transparent,
+        child: InkWell(
+          borderRadius: BorderRadius.circular(18),
+          onTap: () async {
+            await MessageDestinationPreferences.setDestination(
+              MessageDestinationPreferences.destinationTypeChannel,
+              recipientPublicKey: channel.publicKeyHex,
+            );
+            messagesProvider.navigateToDestination(
+              MessageDestinationPreferences.destinationTypeChannel,
+              recipientPublicKeyHex: channel.publicKeyHex,
+            );
+            onNavigateToMessages?.call();
+          },
+          child: Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
+            child: Row(
+              crossAxisAlignment: CrossAxisAlignment.center,
+              children: [
+                ContactAvatar(contact: channel, radius: 20),
+                const SizedBox(width: 10),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        channel.displayName,
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: Theme.of(context).textTheme.titleMedium
+                            ?.copyWith(
+                              fontWeight: FontWeight.w800,
+                              fontSize: 15,
+                              height: 1.05,
+                            ),
+                      ),
+                      const SizedBox(height: 8),
+                      if (participantNames.isNotEmpty)
+                        _ExpandableParticipantStack(
+                          names: participantNames,
+                          contactForName: _findParticipantContact,
+                        )
+                      else
+                        Text(
+                          'No recent chatters',
+                          style: Theme.of(context).textTheme.bodySmall
+                              ?.copyWith(color: colorScheme.onSurfaceVariant),
+                        ),
+                      const SizedBox(height: 8),
+                      Wrap(
+                        spacing: 6,
+                        runSpacing: 6,
+                        children: [
+                          _MetricChip(
+                            icon: Icons.forum_outlined,
+                            label: '${channelMessages.length}',
+                            helper: 'messages',
+                          ),
+                          _MetricChip(
+                            icon: Icons.group_outlined,
+                            label: '${participantNames.length}',
+                            helper: 'active',
+                          ),
+                        ],
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Contact? _findParticipantContact(String name) {
+    for (final contact in contactsProvider.contacts) {
+      if (!contact.isChannel && contact.advName == name) {
+        return contact;
+      }
+    }
+    return null;
+  }
+}
+
+class _ExpandableParticipantStack extends StatefulWidget {
+  final List<String> names;
+  final Contact? Function(String name) contactForName;
+
+  const _ExpandableParticipantStack({
+    required this.names,
+    required this.contactForName,
+  });
+
+  @override
+  State<_ExpandableParticipantStack> createState() =>
+      _ExpandableParticipantStackState();
+}
+
+class _ExpandableParticipantStackState
+    extends State<_ExpandableParticipantStack> {
+  bool _expanded = false;
+  static const int _collapsedVisibleCount = 4;
+
+  @override
+  Widget build(BuildContext context) {
+    final hasOverflow = widget.names.length > _collapsedVisibleCount;
+    final visibleNames = _expanded
+        ? widget.names
+        : widget.names.take(_collapsedVisibleCount).toList();
+    final overflowCount = _expanded
+        ? 0
+        : widget.names.length - visibleNames.length;
+    final spacing = _expanded ? 20.0 : 16.0;
+    const avatarSize = 24.0;
+    final itemCount = visibleNames.length + (overflowCount > 0 ? 1 : 0);
+    final width = itemCount == 0 ? 0.0 : avatarSize + (itemCount - 1) * spacing;
+
+    return GestureDetector(
+      onTap: hasOverflow
+          ? () {
+              setState(() {
+                _expanded = !_expanded;
+              });
+            }
+          : null,
+      child: AnimatedContainer(
+        duration: const Duration(milliseconds: 180),
+        curve: Curves.easeOut,
+        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: widget.contactForName(visibleNames[i]),
+                ),
+              ),
+            if (overflowCount > 0)
+              Positioned(
+                left: visibleNames.length * spacing,
+                top: 0,
+                child: _OverflowAvatar(count: overflowCount),
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _OverflowAvatar extends StatelessWidget {
+  final int count;
+
+  const _OverflowAvatar({required this.count});
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+    return Container(
+      width: 24,
+      height: 24,
+      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: 9,
+        ),
+      ),
+    );
+  }
+}
+
+class _ParticipantAvatar extends StatelessWidget {
+  final String name;
+  final Contact? contact;
+  static const double _size = 24;
+
+  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: _size,
+        height: _size,
+        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: 8)),
+          ),
+        ),
+      );
+    }
+
+    final colorScheme = Theme.of(context).colorScheme;
+    return Container(
+      width: _size,
+      height: _size,
+      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: 9,
+        ),
+      ),
+    );
+  }
+}
+
+class _MetricChip extends StatelessWidget {
+  final IconData icon;
+  final String label;
+  final String helper;
+
+  const _MetricChip({
+    required this.icon,
+    required this.label,
+    required this.helper,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 7, vertical: 4),
+      decoration: BoxDecoration(
+        color: colorScheme.surface.withValues(alpha: 0.72),
+        borderRadius: BorderRadius.circular(999),
+      ),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(icon, size: 14, color: colorScheme.onSurfaceVariant),
+          const SizedBox(width: 5),
+          Text(
+            label,
+            style: Theme.of(
+              context,
+            ).textTheme.labelSmall?.copyWith(fontWeight: FontWeight.w700),
+          ),
+          const SizedBox(width: 4),
+          Text(
+            helper,
+            style: Theme.of(context).textTheme.labelSmall?.copyWith(
+              color: colorScheme.onSurfaceVariant,
+            ),
+          ),
        ],
      ),
    );
--- a/lib/screens/home_screen.dart
+++ b/lib/screens/home_screen.dart
@@ -24,6 +24,7 @@ import '../widgets/permission_request_dialog.dart';
 import '../widgets/connection_dialog.dart';
 import '../utils/battery_display_helper.dart';
 import '../services/developer_mode_service.dart';
+import '../services/mesh_map_nodes_service.dart';

 enum _HomeTab { messages, contacts, sensors, map }

@@ -93,6 +94,7 @@ class _HomeScreenState extends State<HomeScreen>
    _initTabController();
    _loadRxTxPreference();
    _loadDeveloperModePreference();
+    MeshMapNodesService.syncInBackgroundIfStale();

    // Show permission dialog after the first frame if needed
    if (widget.shouldShowPermissionDialog) {
@@ -195,7 +197,6 @@ class _HomeScreenState extends State<HomeScreen>

      switch (tab) {
        case _HomeTab.messages:
-          context.read<MessagesProvider>().markAllAsRead();
          break;
        case _HomeTab.contacts:
          context.read<ContactsProvider>().markAllAsViewed();
@@ -220,6 +221,9 @@ class _HomeScreenState extends State<HomeScreen>
  void didChangeAppLifecycleState(AppLifecycleState state) {
    _lifecycleState = state;
    _syncFastLocationUiState();
+    if (state == AppLifecycleState.resumed) {
+      MeshMapNodesService.syncInBackgroundIfStale();
+    }
  }

  Future<void> _loadRxTxPreference() async {
@@ -389,10 +393,14 @@ class _HomeScreenState extends State<HomeScreen>
    required int count,
    required bool isActive,
    required Color activeColor,
+    bool compact = false,
  }) {
    final color = isActive ? activeColor : Colors.grey;
    return Container(
-      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 5),
+      padding: EdgeInsets.symmetric(
+        horizontal: compact ? 7 : 8,
+        vertical: compact ? 4 : 5,
+      ),
      decoration: BoxDecoration(
        color: color.withValues(alpha: 0.12),
        borderRadius: BorderRadius.circular(999),
@@ -401,15 +409,15 @@ class _HomeScreenState extends State<HomeScreen>
        mainAxisSize: MainAxisSize.min,
        children: [
          Container(
-            width: 7,
-            height: 7,
+            width: compact ? 6 : 7,
+            height: compact ? 6 : 7,
            decoration: BoxDecoration(shape: BoxShape.circle, color: color),
          ),
-          const SizedBox(width: 6),
+          SizedBox(width: compact ? 5 : 6),
          Text(
            '$label:$count',
            style: TextStyle(
-              fontSize: 11,
+              fontSize: compact ? 10 : 11,
              fontWeight: FontWeight.w600,
              color: color,
            ),
@@ -1037,17 +1045,19 @@ class _HomeScreenState extends State<HomeScreen>
                            txActive: provider.txActivity,
                          )
                        : Container(
+                            constraints: const BoxConstraints(minHeight: 48),
                            padding: const EdgeInsets.symmetric(
-                              horizontal: 10,
-                              vertical: 8,
+                              horizontal: 8,
+                              vertical: 4,
                            ),
                            decoration: BoxDecoration(
                              color: theme.colorScheme.surfaceContainerHigh
                                  .withValues(alpha: 0.85),
-                              borderRadius: BorderRadius.circular(20),
+                              borderRadius: BorderRadius.circular(22),
                            ),
                            child: Column(
                              mainAxisSize: MainAxisSize.min,
+                              mainAxisAlignment: MainAxisAlignment.center,
                              crossAxisAlignment: CrossAxisAlignment.end,
                              children: [
                                _buildActivityBadge(
@@ -1055,13 +1065,15 @@ class _HomeScreenState extends State<HomeScreen>
                                  count: provider.rxPacketCount,
                                  isActive: provider.rxActivity,
                                  activeColor: Colors.green,
+                                  compact: true,
                                ),
-                                const SizedBox(height: 6),
+                                const SizedBox(height: 4),
                                _buildActivityBadge(
                                  label: 'TX',
                                  count: provider.txPacketCount,
                                  isActive: provider.txActivity,
                                  activeColor: Colors.blue,
+                                  compact: true,
                                ),
                              ],
                            ),
--- a/lib/screens/messages_tab.dart
+++ b/lib/screens/messages_tab.dart
@@ -89,9 +89,7 @@ class _MessagesTabState extends State<MessagesTab> {
    // Load saved message destination
    _loadSavedDestination();
    _loadVoiceBitrate();
-    // Mark all messages as read when tab is opened
    WidgetsBinding.instance.addPostFrameCallback((_) {
-      context.read<MessagesProvider>().markAllAsRead();
      _checkForNavigationRequest();
    });
  }
@@ -309,6 +307,8 @@ class _MessagesTabState extends State<MessagesTab> {
      _selectedRecipient = recipient;
    });

+    _markCurrentDestinationAsRead();
+
    _enforceMessageByteLimit();

    // Save to preferences
@@ -465,6 +465,7 @@ class _MessagesTabState extends State<MessagesTab> {

      _textController.clear();
      _focusNode.unfocus();
+      _markCurrentDestinationAsRead();

      if (!mounted) return;
    } catch (e) {
@@ -1641,6 +1642,13 @@ class _MessagesTabState extends State<MessagesTab> {
    }
  }

+  void _markCurrentDestinationAsRead() {
+    context.read<MessagesProvider>().markDestinationAsRead(
+      destinationType: _destinationType,
+      contact: _selectedRecipient,
+    );
+  }
+
  List<Message> _getFilteredMessages(MessagesProvider messagesProvider) {
    // Get all recent messages
    final allMessages = messagesProvider.getRecentMessages(count: 100);
--- a/lib/screens/packet_log_screen.dart
+++ b/lib/screens/packet_log_screen.dart
@@ -8,6 +8,7 @@ import 'package:meshcore_client/meshcore_client.dart';
 import '../l10n/app_localizations.dart';
 import '../providers/connection_provider.dart';
 import '../providers/contacts_provider.dart';
+import '../services/mesh_map_nodes_service.dart';
 import '../services/route_hash_preferences.dart';
 import '../utils/log_rx_route_decoder.dart';

@@ -746,22 +747,31 @@ class _DecodedRouteSection extends StatelessWidget {
        connectionProvider.deviceInfo.selfName ??
        connectionProvider.deviceInfo.displayName;

-    return FutureBuilder<int>(
-      future: RouteHashPreferences.getHashSize(),
+    return FutureBuilder<List<dynamic>>(
+      future: Future.wait<dynamic>([
+        RouteHashPreferences.getHashSize(),
+        MeshMapNodesService.loadCachedNodes(
+          cacheTtl: MeshMapNodesService.traceCacheTtl,
+        ),
+      ]),
      builder: (context, snapshot) {
        final decodedRoute = LogRxRouteDecoder.decode(
          log.rawData,
-          preferredHashSize: snapshot.data,
+          preferredHashSize: snapshot.data?.first as int?,
        );
        if (decodedRoute == null) {
          return const SizedBox.shrink();
        }

+        final cachedNodes = snapshot.hasData
+            ? snapshot.data![1] as List<MeshMapNode>
+            : const <MeshMapNode>[];
        final resolvedPath = decodedRoute.hopHashes
            .map(
-              (hashHex) => LogRxRouteDecoder.resolveHash(
+              (hashHex) => _resolveHashWithFallback(
                hashHex,
                contacts: contacts,
+                cachedNodes: cachedNodes,
                ownPublicKey: ownPublicKey,
                ownName: ownName,
              ),
@@ -777,6 +787,41 @@ class _DecodedRouteSection extends StatelessWidget {
      },
    );
  }
+
+  ResolvedNodeHash _resolveHashWithFallback(
+    String hashHex, {
+    required List<Contact> contacts,
+    required List<MeshMapNode> cachedNodes,
+    required Uint8List? ownPublicKey,
+    required String? ownName,
+  }) {
+    final localResolved = LogRxRouteDecoder.resolveHash(
+      hashHex,
+      contacts: contacts,
+      ownPublicKey: ownPublicKey,
+      ownName: ownName,
+    );
+    if (localResolved.matchCount > 0 || localResolved.isOwnNode) {
+      return localResolved;
+    }
+
+    final normalizedHashHex = hashHex.toLowerCase();
+    final matches = cachedNodes
+        .where((node) => node.publicKey.startsWith(normalizedHashHex))
+        .toList();
+    if (matches.isEmpty) {
+      return localResolved;
+    }
+
+    matches.sort((a, b) => b.updatedAtMs.compareTo(a.updatedAtMs));
+    return ResolvedNodeHash(
+      hashHex: normalizedHashHex,
+      label: matches.first.name,
+      isOwnNode: false,
+      isUniqueMatch: matches.length == 1,
+      matchCount: matches.length,
+    );
+  }
 }

 class _RouteSection extends StatelessWidget {
--- a/lib/screens/settings_screen.dart
+++ b/lib/screens/settings_screen.dart
@@ -1,5 +1,6 @@
-import 'dart:io' show Platform;
 import 'dart:typed_data';
+import 'package:flutter/foundation.dart'
+    show TargetPlatform, defaultTargetPlatform, kIsWeb;
 import 'package:flutter/material.dart';
 import 'package:flutter_avif/flutter_avif.dart';
 import 'package:image_picker/image_picker.dart';
@@ -15,6 +16,7 @@ import '../providers/app_provider.dart';
 import '../providers/connection_provider.dart';
 import '../services/location_tracking_service.dart';
 import '../services/locale_preferences.dart';
+import '../services/mesh_map_nodes_service.dart';
 import '../services/update_checker_service.dart';
 import '../services/voice_codec_service.dart';
 import '../services/voice_bitrate_preferences.dart';
@@ -72,6 +74,8 @@ class _SettingsScreenState extends State<SettingsScreen> {
  double _fastLocationMovementThresholdMeters = 10.0;
  int _fastLocationActiveCadenceSeconds = 10;
  bool _isDeveloperModeEnabled = false;
+  DateTime? _onlineTraceCacheUpdatedAt;
+  bool _isClearingOnlineTraceCache = false;
  int _versionTapCount = 0;
  final ImagePicker _imagePicker = ImagePicker();
  final LocationTrackingService _locationService = LocationTrackingService();
@@ -89,6 +93,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
    _loadImagePreferences();
    _loadFastLocationSettings();
    _loadDeveloperMode();
+    _loadOnlineTraceCacheStatus();
  }

  @override
@@ -126,6 +131,14 @@ class _SettingsScreenState extends State<SettingsScreen> {
    });
  }

+  Future<void> _loadOnlineTraceCacheStatus() async {
+    final cachedAt = await MeshMapNodesService.cachedAt();
+    if (!mounted) return;
+    setState(() {
+      _onlineTraceCacheUpdatedAt = cachedAt;
+    });
+  }
+
  Future<void> _handleVersionTap() async {
    if (_isDeveloperModeEnabled) {
      await DeveloperModeService.setEnabled(false);
@@ -470,7 +483,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
  /// Check for app updates and show notification or dialog
  Future<void> _checkForUpdates() async {
    // Only on Android
-    if (!Platform.isAndroid) {
+    if (kIsWeb || defaultTargetPlatform != TargetPlatform.android) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(
@@ -829,6 +842,66 @@ class _SettingsScreenState extends State<SettingsScreen> {
    );
  }

+  Future<void> _clearOnlineTraceCache() async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('Clear online trace database'),
+        content: const Text(
+          'This removes the cached online node database used as a trace fallback.',
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: Text(AppLocalizations.of(context)!.cancel),
+          ),
+          TextButton(
+            onPressed: () => Navigator.pop(context, true),
+            style: TextButton.styleFrom(foregroundColor: Colors.red),
+            child: Text(AppLocalizations.of(context)!.clear),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed != true || !mounted) return;
+
+    setState(() {
+      _isClearingOnlineTraceCache = true;
+    });
+
+    await MeshMapNodesService.clearCache();
+
+    if (!mounted) return;
+    setState(() {
+      _onlineTraceCacheUpdatedAt = null;
+      _isClearingOnlineTraceCache = false;
+    });
+
+    ScaffoldMessenger.of(context).showSnackBar(
+      const SnackBar(
+        content: Text('Online trace database cleared'),
+        backgroundColor: Colors.orange,
+      ),
+    );
+  }
+
+  String _onlineTraceCacheSubtitle() {
+    final cachedAt = _onlineTraceCacheUpdatedAt;
+    if (cachedAt == null) {
+      return 'No cached online database. Refresh runs in background when internet is available.';
+    }
+
+    final expiresAt = cachedAt.add(MeshMapNodesService.traceCacheTtl);
+    return 'Last synced ${_formatDateTime(cachedAt)}. Cached for 24 hours until ${_formatDateTime(expiresAt)}.';
+  }
+
+  String _formatDateTime(DateTime value) {
+    final local = value.toLocal();
+    String two(int part) => part.toString().padLeft(2, '0');
+    return '${local.year}-${two(local.month)}-${two(local.day)} ${two(local.hour)}:${two(local.minute)}';
+  }
+
  Future<void> _showRouteHashSizeDialog() async {
    final selected = await showDialog<int>(
      context: context,
@@ -1047,6 +1120,41 @@ class _SettingsScreenState extends State<SettingsScreen> {
            ),
          ]),

+          _buildSectionHeader('Tracing'),
+          _buildSettingsCard([
+            ListTile(
+              leading: const Icon(Icons.cloud_sync),
+              title: const Text('Online trace database'),
+              subtitle: Text(_onlineTraceCacheSubtitle()),
+            ),
+            ListTile(
+              leading: Icon(
+                Icons.delete_sweep,
+                color: _isClearingOnlineTraceCache ? null : Colors.red,
+              ),
+              title: Text(
+                'Clear online trace database',
+                style: TextStyle(
+                  color: _isClearingOnlineTraceCache ? null : Colors.red,
+                ),
+              ),
+              subtitle: const Text(
+                'Remove the 24-hour cached fallback used when local route matches are incomplete',
+              ),
+              enabled: !_isClearingOnlineTraceCache,
+              trailing: _isClearingOnlineTraceCache
+                  ? const SizedBox(
+                      width: 18,
+                      height: 18,
+                      child: CircularProgressIndicator(strokeWidth: 2),
+                    )
+                  : null,
+              onTap: _isClearingOnlineTraceCache
+                  ? null
+                  : _clearOnlineTraceCache,
+            ),
+          ]),
+
          _buildSectionHeader('Voice'),
          Consumer2<AppProvider, ConnectionProvider>(
            builder: (context, appProvider, connectionProvider, child) =>
@@ -1213,8 +1321,10 @@ class _SettingsScreenState extends State<SettingsScreen> {
            ),
          ]),

-          _buildSectionHeader('Network Sharing'),
-          const ConnectionModeSelector(),
+          if (!kIsWeb) ...[
+            _buildSectionHeader('Network Sharing'),
+            const ConnectionModeSelector(),
+          ],

          _buildSectionHeader(AppLocalizations.of(context)!.permissionsSection),
          _buildSettingsCard([
@@ -1320,7 +1430,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
              onTap: () => _showAboutDialog(),
            ),
          ]),
-          if (Platform.isAndroid)
+          if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android)
            Padding(
              padding: const EdgeInsets.only(top: 8),
              child: FilledButton.icon(
--- a/lib/services/build_info_service.dart
+++ b/lib/services/build_info_service.dart
@@ -1,6 +1,5 @@
-import 'dart:io' show Platform;
+import 'package:flutter/foundation.dart' show TargetPlatform, defaultTargetPlatform, debugPrint, kIsWeb;
 import 'package:flutter/services.dart';
-import 'package:flutter/foundation.dart';

 /// Service for accessing build information from native platform code
 /// Currently supports Android only - returns "unknown" for other platforms
@@ -25,7 +24,7 @@ class BuildInfoService {
    }

    // Only Android has the platform channel implementation
-    if (!Platform.isAndroid) {
+    if (kIsWeb || defaultTargetPlatform != TargetPlatform.android) {
      debugPrint('[BuildInfoService] Not on Android platform, returning "unknown"');
      _cachedCommitHash = 'unknown';
      return _cachedCommitHash!;
--- a/lib/services/mesh_map_nodes_service.dart
+++ b/lib/services/mesh_map_nodes_service.dart
@@ -1,5 +1,7 @@
+import 'dart:async';
 import 'dart:convert';
 import 'package:http/http.dart' as http;
+import 'package:shared_preferences/shared_preferences.dart';

 class MeshMapNode {
  final int type;
@@ -33,25 +35,35 @@ class MeshMapNode {
 class MeshMapNodesService {
  static const String _nodesEndpoint =
      'https://api.meshcore.nz/api/v1/map/nodes';
-  static const Duration _cacheTtl = Duration(minutes: 2);
-  static const Duration traceCacheTtl = Duration(minutes: 10);
+  static const Duration _cacheTtl = Duration(hours: 24);
+  static const Duration traceCacheTtl = _cacheTtl;
  static const Duration traceTimeout = Duration(seconds: 30);
+  static const String _cacheKey = 'mesh_map_nodes_cache_v1';
+  static const String _cacheTimestampKey = 'mesh_map_nodes_cache_timestamp_v1';
  static List<MeshMapNode>? _cachedNodes;
  static DateTime? _cachedAt;
+  static Future<void>? _ongoingSync;

  static Future<List<MeshMapNode>> fetchNodes({
    bool forceRefresh = false,
    Duration cacheTtl = _cacheTtl,
+    bool allowNetwork = true,
+    http.Client? client,
  }) async {
    final now = DateTime.now();
+    final cached = await loadCachedNodes(cacheTtl: cacheTtl);
    if (!forceRefresh &&
-        _cachedNodes != null &&
+        cached.isNotEmpty &&
        _cachedAt != null &&
        now.difference(_cachedAt!) < cacheTtl) {
-      return _cachedNodes!;
+      return cached;
    }

-    final response = await http
+    if (!allowNetwork) {
+      return cached;
+    }
+
+    final response = await (client ?? http.Client())
        .get(Uri.parse(_nodesEndpoint))
        .timeout(traceTimeout);
    if (response.statusCode < 200 || response.statusCode >= 300) {
@@ -69,8 +81,131 @@ class MeshMapNodesService {
        )
        .toList();

-    _cachedNodes = nodes;
-    _cachedAt = now;
+    await _storeCache(nodes, cachedAt: now);
    return nodes;
  }
+
+  static Future<List<MeshMapNode>> loadCachedNodes({
+    Duration cacheTtl = _cacheTtl,
+  }) async {
+    final now = DateTime.now();
+    if (_cachedNodes != null &&
+        _cachedAt != null &&
+        now.difference(_cachedAt!) < cacheTtl) {
+      return _cachedNodes!;
+    }
+
+    final prefs = await SharedPreferences.getInstance();
+    final cachedAtMs = prefs.getInt(_cacheTimestampKey);
+    final cachedJson = prefs.getString(_cacheKey);
+    if (cachedAtMs == null || cachedJson == null) {
+      _cachedNodes = null;
+      _cachedAt = null;
+      return const [];
+    }
+
+    final cachedAt = DateTime.fromMillisecondsSinceEpoch(cachedAtMs);
+    if (now.difference(cachedAt) >= cacheTtl) {
+      _cachedNodes = null;
+      _cachedAt = cachedAt;
+      return const [];
+    }
+
+    final decoded = jsonDecode(cachedJson) as List<dynamic>;
+    final nodes = decoded
+        .whereType<Map<String, dynamic>>()
+        .map(MeshMapNode.fromJson)
+        .where(
+          (n) => n.publicKey.isNotEmpty && n.latitude != 0 && n.longitude != 0,
+        )
+        .toList();
+    _cachedNodes = nodes;
+    _cachedAt = cachedAt;
+    return nodes;
+  }
+
+  static Future<bool> hasFreshCache({Duration cacheTtl = _cacheTtl}) async {
+    final nodes = await loadCachedNodes(cacheTtl: cacheTtl);
+    return nodes.isNotEmpty;
+  }
+
+  static Future<void> syncInBackgroundIfStale({
+    Duration cacheTtl = _cacheTtl,
+    http.Client? client,
+  }) async {
+    final now = DateTime.now();
+    if (_cachedAt != null && now.difference(_cachedAt!) < cacheTtl) {
+      return;
+    }
+
+    final cached = await loadCachedNodes(cacheTtl: cacheTtl);
+    if (cached.isNotEmpty && _cachedAt != null) {
+      return;
+    }
+
+    if (_ongoingSync != null) {
+      return _ongoingSync!;
+    }
+
+    _ongoingSync = () async {
+      try {
+        await fetchNodes(
+          forceRefresh: true,
+          cacheTtl: cacheTtl,
+          allowNetwork: true,
+          client: client,
+        );
+      } catch (_) {
+        // Background refresh is best-effort only.
+      } finally {
+        _ongoingSync = null;
+      }
+    }();
+
+    return _ongoingSync!;
+  }
+
+  static Future<void> clearCache() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_cacheKey);
+    await prefs.remove(_cacheTimestampKey);
+    _cachedNodes = null;
+    _cachedAt = null;
+  }
+
+  static Future<DateTime?> cachedAt() async {
+    if (_cachedAt != null) return _cachedAt;
+    final prefs = await SharedPreferences.getInstance();
+    final cachedAtMs = prefs.getInt(_cacheTimestampKey);
+    if (cachedAtMs == null) return null;
+    _cachedAt = DateTime.fromMillisecondsSinceEpoch(cachedAtMs);
+    return _cachedAt;
+  }
+
+  static Future<void> _storeCache(
+    List<MeshMapNode> nodes, {
+    required DateTime cachedAt,
+  }) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(
+      _cacheKey,
+      jsonEncode(
+        nodes
+            .map(
+              (node) => {
+                'type': node.type,
+                'name': node.name,
+                'public_key': node.publicKey,
+                'latitude': node.latitude,
+                'longitude': node.longitude,
+                'updated_at': node.updatedAtMs,
+              },
+            )
+            .toList(),
+      ),
+    );
+    await prefs.setInt(_cacheTimestampKey, cachedAt.millisecondsSinceEpoch);
+    _cachedNodes = nodes;
+    _cachedAt = cachedAt;
+  }
 }
--- a/lib/services/packet_capture_storage_service.dart
+++ b/lib/services/packet_capture_storage_service.dart
@@ -61,6 +61,9 @@ class PacketCaptureStorageService {
  File? _file;

  Future<File> _resolveFile() async {
+    if (kIsWeb) {
+      throw UnsupportedError('Packet capture file storage is not supported on web');
+    }
    if (_file != null) return _file!;
    final dir = await getApplicationSupportDirectory();
    final file = File('${dir.path}/$_fileName');
@@ -73,6 +76,7 @@ class PacketCaptureStorageService {

  Future<void> appendLogs(List<BlePacketLog> logs) async {
    if (logs.isEmpty) return;
+    if (kIsWeb) return;
    try {
      final file = await _resolveFile();
      final sink = file.openWrite(mode: FileMode.append);
@@ -98,6 +102,7 @@ class PacketCaptureStorageService {
  }

  Future<List<StoredPacketCapture>> loadRecent({int limit = 500}) async {
+    if (kIsWeb) return const [];
    try {
      final file = await _resolveFile();
      if (!await file.exists()) return const [];
@@ -116,6 +121,7 @@ class PacketCaptureStorageService {
  }

  Future<int> count() async {
+    if (kIsWeb) return 0;
    try {
      final file = await _resolveFile();
      if (!await file.exists()) return 0;
@@ -127,6 +133,7 @@ class PacketCaptureStorageService {
  }

  Future<void> clear() async {
+    if (kIsWeb) return;
    try {
      final file = await _resolveFile();
      if (await file.exists()) {
--- a/lib/utils/avatar_label_helper.dart
+++ b/lib/utils/avatar_label_helper.dart
@@ -1,4 +1,6 @@
 class AvatarLabelHelper {
+  static final RegExp _alnumChunks = RegExp(r'[A-Za-z0-9]+');
+
  static String buildLabel(String name) {
    final trimmed = name.trim();
    if (trimmed.isEmpty) return '?';
@@ -11,18 +13,23 @@ class AvatarLabelHelper {
      return '#${_take(hashBody, 2)}'.toUpperCase();
    }

-    final parts = trimmed
-        .split(RegExp(r'[\s_-]+'))
+    final parts = _alnumChunks
+        .allMatches(trimmed)
+        .map((match) => match.group(0)!)
        .where((part) => part.isNotEmpty)
        .toList();

+    if (parts.isEmpty) {
+      return '?';
+    }
+
    if (parts.length >= 2) {
      final first = _take(parts[0], 1);
      final second = _take(parts[1], 1);
      return '$first$second'.toUpperCase();
    }

-    return _take(trimmed, 2).toUpperCase();
+    return _take(parts.first, 2).toUpperCase();
  }

  static String _take(String value, int count) {
--- a/lib/utils/contact_grouping.dart
+++ b/lib/utils/contact_grouping.dart
@@ -0,0 +1,116 @@
+import '../models/contact.dart';
+
+class InferredContactGroup {
+  final String key;
+  final String label;
+  final List<Contact> contacts;
+
+  const InferredContactGroup({
+    required this.key,
+    required this.label,
+    required this.contacts,
+  });
+
+  DateTime get latestSeen => contacts.first.lastSeenTime;
+}
+
+class ContactListItem {
+  final Contact? contact;
+  final InferredContactGroup? group;
+
+  const ContactListItem._({this.contact, this.group});
+
+  const ContactListItem.contact(Contact contact) : this._(contact: contact);
+
+  const ContactListItem.group(InferredContactGroup group)
+    : this._(group: group);
+
+  bool get isGroup => group != null;
+
+  DateTime get latestSeen => group?.latestSeen ?? contact!.lastSeenTime;
+}
+
+class ContactGrouping {
+  static final RegExp _prefixedNamePattern = RegExp(
+    r'^([A-Za-z0-9]{2,})([-_/:])',
+  );
+
+  static List<Contact> sortByLastSeen(List<Contact> contacts) {
+    return List<Contact>.from(contacts)
+      ..sort((a, b) => b.lastSeenTime.compareTo(a.lastSeenTime));
+  }
+
+  static List<ContactListItem> buildItems(
+    List<Contact> contacts, {
+    int minGroupSize = 4,
+  }) {
+    final sortedContacts = sortByLastSeen(contacts);
+    return buildItemsFromSorted(sortedContacts, minGroupSize: minGroupSize);
+  }
+
+  static List<ContactListItem> buildItemsFromSorted(
+    List<Contact> sortedContacts, {
+    int minGroupSize = 4,
+  }) {
+    final groupedContacts = <String, List<Contact>>{};
+    final groupLabels = <String, String>{};
+
+    for (final contact in sortedContacts) {
+      final prefix = _extractPrefix(contact.displayName);
+      if (prefix == null) continue;
+      groupedContacts.putIfAbsent(prefix.key, () => <Contact>[]).add(contact);
+      groupLabels.putIfAbsent(prefix.key, () => prefix.label);
+    }
+
+    final eligibleGroups = <String, InferredContactGroup>{};
+    for (final entry in groupedContacts.entries) {
+      if (entry.value.length < minGroupSize) continue;
+      eligibleGroups[entry.key] = InferredContactGroup(
+        key: entry.key,
+        label: groupLabels[entry.key] ?? entry.key,
+        contacts: entry.value,
+      );
+    }
+
+    final emittedGroups = <String>{};
+    final items = <ContactListItem>[];
+
+    for (final contact in sortedContacts) {
+      final prefix = _extractPrefix(contact.displayName);
+      final group = prefix == null ? null : eligibleGroups[prefix.key];
+      if (group == null) {
+        items.add(ContactListItem.contact(contact));
+        continue;
+      }
+      if (emittedGroups.add(group.key)) {
+        items.add(ContactListItem.group(group));
+      }
+    }
+
+    return items;
+  }
+
+  static _GroupPrefix? _extractPrefix(String name) {
+    final trimmed = name.trim();
+    if (trimmed.isEmpty) return null;
+
+    final match = _prefixedNamePattern.firstMatch(trimmed);
+    if (match == null) return null;
+
+    final rawPrefix = match.group(1);
+    final separator = match.group(2);
+    if (rawPrefix == null || separator == null) return null;
+
+    return _GroupPrefix(
+      key: rawPrefix.toUpperCase(),
+      label: '$rawPrefix$separator',
+    );
+  }
+}
+
+class _GroupPrefix {
+  final String key;
+  final String label;
+
+  const _GroupPrefix({required this.key, required this.label});
+}
--- a/lib/utils/log_rx_route_decoder.dart
+++ b/lib/utils/log_rx_route_decoder.dart
@@ -4,11 +4,13 @@ import '../models/contact.dart';

 class DecodedLogRxRoute {
  final int payloadType;
+  final int pathDescriptor;
  final List<int> pathBytes;
  final int hashSize;

  const DecodedLogRxRoute({
    required this.payloadType,
+    required this.pathDescriptor,
    required this.pathBytes,
    required this.hashSize,
  });
@@ -63,21 +65,49 @@ class LogRxRouteDecoder {
    }

    if (rawPacketData.length <= index) return null;
-    final pathLen = rawPacketData[index++];
-    if (rawPacketData.length < index + pathLen) return null;
-    final pathBytes = rawPacketData.sublist(index, index + pathLen);
-    final hashSize = inferHashSize(
-      pathBytes,
-      preferredHashSize: preferredHashSize,
-    );
+    final pathDescriptor = rawPacketData[index++];
+    final pathMode = (pathDescriptor & 0xFF) >> 6;
+    final pathByteLen = pathMode == 0
+        ? pathDescriptor
+        : descriptorByteLength(pathDescriptor);
+    if (pathByteLen == null || rawPacketData.length < index + pathByteLen) {
+      return null;
+    }
+    final pathBytes = rawPacketData.sublist(index, index + pathByteLen);
+    final hashSize = pathMode == 0
+        ? inferHashSize(pathBytes, preferredHashSize: preferredHashSize)
+        : (descriptorHashSize(pathDescriptor) ??
+              inferHashSize(pathBytes, preferredHashSize: preferredHashSize));

    return DecodedLogRxRoute(
      payloadType: payloadType,
+      pathDescriptor: pathDescriptor,
      pathBytes: pathBytes,
      hashSize: hashSize,
    );
  }

+  static int? descriptorHashSize(int pathDescriptor) {
+    final normalized = pathDescriptor & 0xFF;
+    final mode = normalized >> 6;
+    if (mode == 3) return null;
+    return mode + 1;
+  }
+
+  static int? descriptorHopCount(int pathDescriptor) {
+    final hashSize = descriptorHashSize(pathDescriptor);
+    if (hashSize == null) return null;
+    return (pathDescriptor & 0xFF) & 0x3F;
+  }
+
+  static int? descriptorByteLength(int pathDescriptor) {
+    final hashSize = descriptorHashSize(pathDescriptor);
+    final hopCount = descriptorHopCount(pathDescriptor);
+    if (hashSize == null || hopCount == null) return null;
+    final byteLen = hopCount * hashSize;
+    return byteLen <= 64 ? byteLen : null;
+  }
+
  static int inferHashSize(List<int> pathBytes, {int? preferredHashSize}) {
    if (pathBytes.isEmpty) return 1;

--- a/lib/widgets/common/contact_avatar.dart
+++ b/lib/widgets/common/contact_avatar.dart
@@ -22,7 +22,7 @@ class ContactAvatar extends StatelessWidget {
    final foregroundColor = _getForegroundColor(backgroundColor);
    final emoji = contact.roleEmoji;

-    if (emoji != null && emoji.isNotEmpty) {
+    if (_showsLeadingEmoji && emoji != null && emoji.isNotEmpty) {
      return _buildAvatarFrame(
        backgroundColor: backgroundColor,
        child: Text(emoji, style: TextStyle(fontSize: radius * 1.05)),
@@ -86,8 +86,16 @@ class ContactAvatar extends StatelessWidget {
  bool get _usesSquareShape =>
      contact.type == ContactType.channel || contact.type == ContactType.room;

+  bool get _showsLeadingEmoji {
+    final emoji = contact.roleEmoji;
+    if (emoji == null || emoji.isEmpty) return false;
+
+    final effectiveName = (displayName ?? contact.displayName).trimLeft();
+    return effectiveName.startsWith(emoji);
+  }
+
  Color _getBackgroundColor(BuildContext context) {
-    if (_shouldUseLabelFallback || (contact.roleEmoji?.isNotEmpty ?? false)) {
+    if (_shouldUseLabelFallback || _showsLeadingEmoji) {
      return TrailColorService.getTrailColor(contact);
    }

--- a/lib/widgets/connection_mode_selector.dart
+++ b/lib/widgets/connection_mode_selector.dart
@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:provider/provider.dart';
@@ -25,6 +26,10 @@ class _ConnectionModeSelectorState extends State<ConnectionModeSelector> {
  }

  Future<void> _loadLocalIPs() async {
+    if (kIsWeb) {
+      return;
+    }
+
    final Set<String> ipsSet = {};

    try {
--- a/lib/widgets/contacts/contact_tile.dart
+++ b/lib/widgets/contacts/contact_tile.dart
@@ -1,5 +1,6 @@
+import 'dart:typed_data';
+
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
 import 'package:provider/provider.dart';
 import 'package:geolocator/geolocator.dart';
 import 'package:latlong2/latlong.dart';
@@ -9,11 +10,11 @@ import '../../providers/connection_provider.dart';
 import '../../providers/contacts_provider.dart';
 import '../../providers/map_provider.dart';
 import '../../providers/messages_provider.dart';
+import '../../providers/sensors_provider.dart';
 import '../../services/message_destination_preferences.dart';
 import 'contact_route_dialog.dart';
 import 'room_login_sheet.dart';
 import '../common/contact_avatar.dart';
-import '../../utils/location_formats.dart';
 import '../../utils/toast_logger.dart';
 import '../../l10n/app_localizations.dart';

@@ -48,6 +49,7 @@ class ContactTile extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
+    final isChannel = contact.type == ContactType.channel;
    final location = contact.displayLocation;
    // Calculate distance if both positions are available
    String? distanceText;
@@ -114,33 +116,33 @@ class ContactTile extends StatelessWidget {
          : colorScheme.onSurfaceVariant,
      fontWeight: FontWeight.w600,
    );
-    final subtitleWidget = Column(
-      crossAxisAlignment: CrossAxisAlignment.start,
-      children: [
-        if (location != null) ...[
-          const SizedBox(height: 2),
-          _buildLocationLine(
-            context,
-            latitude: location.latitude,
-            longitude: location.longitude,
-            distanceText: distanceText,
-          ),
-          if (contact.type != ContactType.channel) ...[
-            const SizedBox(height: 6),
-            Row(children: [_buildRoutePill(context, contact)]),
-          ],
-        ] else
-          Padding(
-            padding: const EdgeInsets.only(top: 4),
-            child: Text(
-              AppLocalizations.of(context)!.noGpsData,
-              style: Theme.of(
-                context,
-              ).textTheme.labelSmall?.copyWith(color: Colors.grey),
-            ),
-          ),
-      ],
-    );
+    final Widget? subtitleWidget = isChannel
+        ? null
+        : Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              if (location != null) ...[
+                const SizedBox(height: 2),
+                _buildLocationLine(
+                  context,
+                  latitude: location.latitude,
+                  longitude: location.longitude,
+                  distanceText: distanceText,
+                ),
+                const SizedBox(height: 6),
+                Row(children: [_buildRoutePill(context, contact)]),
+              ] else
+                Padding(
+                  padding: const EdgeInsets.only(top: 4),
+                  child: Text(
+                    AppLocalizations.of(context)!.noGpsData,
+                    style: Theme.of(
+                      context,
+                    ).textTheme.labelSmall?.copyWith(color: Colors.grey),
+                  ),
+                ),
+            ],
+          );

    return Container(
      margin: const EdgeInsets.only(bottom: 8),
@@ -237,7 +239,8 @@ class ContactTile extends StatelessWidget {
                            ),
                          ),
                          const SizedBox(width: 8),
-                          Text(timeAgoText, style: timeAgoStyle),
+                          if (!isChannel)
+                            Text(timeAgoText, style: timeAgoStyle),
                          if (isPingInProgress) ...[
                            const SizedBox(width: 6),
                            SizedBox(
@@ -251,7 +254,7 @@ class ContactTile extends StatelessWidget {
                          ],
                        ],
                      ),
-                      subtitleWidget,
+                      ?subtitleWidget,
                    ],
                  ),
                ),
@@ -264,11 +267,6 @@ class ContactTile extends StatelessWidget {
  }

  void _handlePrimaryTap(BuildContext context, Contact contact) {
-    if (contact.type == ContactType.repeater) {
-      _showContactDetails(context, contact);
-      return;
-    }
-
    _showContactActionSheet(context, contact);
  }

@@ -280,6 +278,11 @@ class ContactTile extends StatelessWidget {
        contact.type == ContactType.channel;
    final canSetPath =
        contact.type == ContactType.chat || contact.type == ContactType.room;
+    final canAddToSensors =
+        contact.type == ContactType.chat ||
+        contact.type == ContactType.repeater;
+    final sensorsProvider = context.read<SensorsProvider>();
+    final isInSensors = sensorsProvider.isWatched(contact.publicKeyHex);

    showModalBottomSheet(
      context: context,
@@ -301,6 +304,46 @@ class ContactTile extends StatelessWidget {
                      await _openMessagesForContact(context, contact);
                    },
            ),
+            if (contact.displayLocation != null)
+              ListTile(
+                leading: const Icon(Icons.map_outlined),
+                title: Text(l10n.viewOnMap),
+                onTap: () {
+                  Navigator.pop(sheetContext);
+                  _showContactOnMap(context, contact);
+                },
+              ),
+            if (contact.type == ContactType.room && !contact.isPublicChannel)
+              ListTile(
+                leading: const Icon(Icons.login),
+                title: Text(
+                  context
+                              .read<ConnectionProvider>()
+                              .getRoomLoginState(contact.publicKeyPrefix)
+                              ?.isLoggedIn ==
+                          true
+                      ? AppLocalizations.of(context)!.reLoginToRoom
+                      : AppLocalizations.of(context)!.loginToRoom,
+                ),
+                onTap: () {
+                  Navigator.pop(sheetContext);
+                  _showRoomLoginDialog(context, contact);
+                },
+              ),
+            if (canAddToSensors)
+              ListTile(
+                leading: Icon(
+                  isInSensors ? Icons.sensors : Icons.sensors_outlined,
+                ),
+                title: Text(isInSensors ? 'In Sensors' : 'Add to Sensors'),
+                enabled: !isInSensors,
+                onTap: isInSensors
+                    ? null
+                    : () async {
+                        Navigator.pop(sheetContext);
+                        await _addContactToSensors(context, contact);
+                      },
+              ),
            if (canSetPath)
              ListTile(
                leading: const Icon(Icons.alt_route),
@@ -332,6 +375,32 @@ class ContactTile extends StatelessWidget {
    );
  }

+  void _showContactOnMap(BuildContext context, Contact contact) {
+    final location = contact.displayLocation;
+    if (location == null) {
+      return;
+    }
+
+    context.read<MapProvider>().navigateToLocation(
+      location: LatLng(location.latitude, location.longitude),
+    );
+    onNavigateToMap?.call();
+  }
+
+  Future<void> _addContactToSensors(
+    BuildContext context,
+    Contact contact,
+  ) async {
+    await context.read<SensorsProvider>().addSensor(contact);
+    if (!context.mounted) {
+      return;
+    }
+
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(content: Text('${contact.displayName} added to Sensors')),
+    );
+  }
+
  Future<void> _openMessagesForContact(
    BuildContext context,
    Contact contact,
@@ -422,505 +491,6 @@ class ContactTile extends StatelessWidget {
    }
  }

-  void _showContactDetails(BuildContext context, Contact contact) {
-    final l10n = AppLocalizations.of(context)!;
-
-    // Get room login state
-    final connectionProvider = context.read<ConnectionProvider>();
-    final roomLoginState = contact.type == ContactType.room
-        ? connectionProvider.getRoomLoginState(contact.publicKeyPrefix)
-        : null;
-
-    showModalBottomSheet(
-      context: context,
-      isScrollControlled: true,
-      shape: const RoundedRectangleBorder(
-        borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
-      ),
-      builder: (context) => DraggableScrollableSheet(
-        initialChildSize: 0.6,
-        minChildSize: 0.4,
-        maxChildSize: 0.9,
-        expand: false,
-        builder: (context, scrollController) {
-          final contactsProvider = context.watch<ContactsProvider>();
-          final currentContact =
-              contactsProvider.findContactByKey(contact.publicKey) ?? contact;
-          final isPingInProgress = context
-              .watch<ConnectionProvider>()
-              .isPingInProgress(contact.publicKey);
-          return Column(
-            children: [
-              // Handle bar
-              Container(
-                margin: const EdgeInsets.only(top: 8, bottom: 16),
-                width: 40,
-                height: 4,
-                decoration: BoxDecoration(
-                  color: Colors.grey[300],
-                  borderRadius: BorderRadius.circular(2),
-                ),
-              ),
-              // Header
-              Padding(
-                padding: const EdgeInsets.symmetric(horizontal: 16),
-                child: Row(
-                  children: [
-                    ContactAvatar(contact: contact, radius: 20),
-                    const SizedBox(width: 12),
-                    Expanded(
-                      child: Text(
-                        contact.displayName,
-                        style: const TextStyle(
-                          fontSize: 20,
-                          fontWeight: FontWeight.bold,
-                        ),
-                      ),
-                    ),
-                    IconButton(
-                      icon: const Icon(Icons.close),
-                      onPressed: () => Navigator.pop(context),
-                    ),
-                  ],
-                ),
-              ),
-              const Divider(),
-              // Content
-              Expanded(
-                child: ListView(
-                  controller: scrollController,
-                  padding: const EdgeInsets.all(16),
-                  children: [
-                    _detailRow(l10n.type, contact.type.displayName),
-                    if (contact.isChannel) ...[
-                      _detailRow(
-                        l10n.channel,
-                        contact.getLocalizedDisplayName(context),
-                      ),
-                      if (!contact.isPublicChannel)
-                        _detailRow(
-                          'Slot',
-                          '${l10n.channel} ${contact.publicKey.length > 1 ? contact.publicKey[1] : '-'}',
-                        ),
-                    ] else
-                      // Public Key with copy button
-                      Padding(
-                        padding: const EdgeInsets.symmetric(vertical: 4),
-                        child: Row(
-                          crossAxisAlignment: CrossAxisAlignment.center,
-                          children: [
-                            SizedBox(
-                              width: 100,
-                              child: Text(
-                                '${l10n.publicKey}:',
-                                style: const TextStyle(
-                                  fontWeight: FontWeight.w500,
-                                ),
-                              ),
-                            ),
-                            Expanded(child: Text(contact.publicKeyShort)),
-                            const SizedBox(width: 8),
-                            InkWell(
-                              onTap: () {
-                                Clipboard.setData(
-                                  ClipboardData(text: contact.publicKeyHex),
-                                );
-                                ScaffoldMessenger.of(context).showSnackBar(
-                                  SnackBar(
-                                    content: Text(l10n.publicKeyCopied),
-                                    duration: const Duration(seconds: 2),
-                                  ),
-                                );
-                              },
-                              borderRadius: BorderRadius.circular(4),
-                              child: Padding(
-                                padding: const EdgeInsets.all(4),
-                                child: Icon(
-                                  Icons.copy,
-                                  size: 16,
-                                  color: Theme.of(context).colorScheme.primary,
-                                ),
-                              ),
-                            ),
-                          ],
-                        ),
-                      ),
-                    _detailRow(
-                      l10n.lastSeen,
-                      _getLocalizedTimeSinceLastSeen(context),
-                    ),
-                    const SizedBox(height: 16),
-                    // Room Login Status
-                    if (roomLoginState != null) ...[
-                      Text(
-                        '${AppLocalizations.of(context)!.roomStatus}:',
-                        style: const TextStyle(
-                          fontWeight: FontWeight.bold,
-                          fontSize: 16,
-                        ),
-                      ),
-                      const SizedBox(height: 8),
-                      _detailRow(
-                        AppLocalizations.of(context)!.loginStatus,
-                        roomLoginState.isLoggedIn
-                            ? AppLocalizations.of(context)!.loggedIn
-                            : AppLocalizations.of(context)!.notLoggedIn,
-                      ),
-                      if (roomLoginState.isLoggedIn) ...[
-                        _detailRow(
-                          AppLocalizations.of(context)!.adminAccess,
-                          roomLoginState.isAdmin
-                              ? AppLocalizations.of(context)!.yes
-                              : AppLocalizations.of(context)!.no,
-                        ),
-                        _detailRow(
-                          AppLocalizations.of(context)!.permissions,
-                          roomLoginState.permissions.toString(),
-                        ),
-                        if (roomLoginState.loginDurationFormatted != null)
-                          _detailRow(
-                            AppLocalizations.of(context)!.loggedIn,
-                            roomLoginState.loginDurationFormatted!,
-                          ),
-                      ],
-                      _detailRow(
-                        AppLocalizations.of(context)!.passwordSaved,
-                        roomLoginState.hasPassword
-                            ? AppLocalizations.of(context)!.yes
-                            : AppLocalizations.of(context)!.no,
-                      ),
-                      const SizedBox(height: 16),
-                    ],
-                    if (contact.displayLocation != null) ...[
-                      Row(
-                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                        children: [
-                          Text(
-                            AppLocalizations.of(context)!.locationColon,
-                            style: const TextStyle(
-                              fontWeight: FontWeight.bold,
-                              fontSize: 16,
-                            ),
-                          ),
-                          TextButton.icon(
-                            onPressed: () {
-                              // Navigate to map and close modal
-                              final mapProvider = context.read<MapProvider>();
-                              mapProvider.navigateToLocation(
-                                location: LatLng(
-                                  contact.displayLocation!.latitude,
-                                  contact.displayLocation!.longitude,
-                                ),
-                              );
-                              Navigator.pop(context);
-
-                              // Switch to map tab using callback
-                              onNavigateToMap?.call();
-                            },
-                            icon: const Icon(Icons.map, size: 18),
-                            label: Text(
-                              AppLocalizations.of(context)!.viewOnMap,
-                            ),
-                            style: TextButton.styleFrom(
-                              padding: const EdgeInsets.symmetric(
-                                horizontal: 8,
-                                vertical: 4,
-                              ),
-                            ),
-                          ),
-                        ],
-                      ),
-                      const SizedBox(height: 8),
-                      // Decimal Degrees (DD)
-                      _detailRowWithCopy(
-                        context,
-                        'DD',
-                        '${contact.displayLocation!.latitude.toStringAsFixed(6)}, ${contact.displayLocation!.longitude.toStringAsFixed(6)}',
-                      ),
-                      // Degrees Minutes Seconds (DMS)
-                      _detailRowWithCopy(
-                        context,
-                        'DMS',
-                        _convertToDMS(
-                          contact.displayLocation!.latitude,
-                          contact.displayLocation!.longitude,
-                        ),
-                      ),
-                      // Degrees Decimal Minutes (DDM)
-                      _detailRowWithCopy(
-                        context,
-                        'DDM',
-                        _convertToDDM(
-                          contact.displayLocation!.latitude,
-                          contact.displayLocation!.longitude,
-                        ),
-                      ),
-                      // MGRS (Military Grid Reference System)
-                      _detailRowWithCopy(
-                        context,
-                        'MGRS',
-                        _convertToMGRS(
-                          contact.displayLocation!.latitude,
-                          contact.displayLocation!.longitude,
-                        ),
-                      ),
-                      // Google Plus Code
-                      _detailRowWithCopy(
-                        context,
-                        'Plus Code',
-                        formatPlusCode(
-                          contact.displayLocation!.latitude,
-                          contact.displayLocation!.longitude,
-                        ),
-                      ),
-                      const SizedBox(height: 16),
-                    ],
-                    if (contact.telemetry != null) ...[
-                      Row(
-                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                        children: [
-                          Text(
-                            '${AppLocalizations.of(context)!.telemetry}:',
-                            style: const TextStyle(
-                              fontWeight: FontWeight.bold,
-                              fontSize: 16,
-                            ),
-                          ),
-                          TextButton.icon(
-                            onPressed: isPingInProgress
-                                ? null
-                                : () async {
-                                    final connectionProvider = context
-                                        .read<ConnectionProvider>();
-                                    final result = await connectionProvider
-                                        .smartPing(
-                                          contactPublicKey: contact.publicKey,
-                                          hasPath: contact.routeHasPath,
-                                        );
-
-                                    if (!context.mounted || result.success) {
-                                      return;
-                                    }
-
-                                    ToastLogger.error(
-                                      context,
-                                      AppLocalizations.of(
-                                        context,
-                                      )!.pingFailed(contact.displayName),
-                                    );
-                                  },
-                            icon: isPingInProgress
-                                ? const SizedBox(
-                                    width: 16,
-                                    height: 16,
-                                    child: CircularProgressIndicator(
-                                      strokeWidth: 2,
-                                    ),
-                                  )
-                                : const Icon(Icons.refresh, size: 18),
-                            label: Text(AppLocalizations.of(context)!.refresh),
-                            style: TextButton.styleFrom(
-                              padding: const EdgeInsets.symmetric(
-                                horizontal: 8,
-                                vertical: 4,
-                              ),
-                            ),
-                          ),
-                        ],
-                      ),
-                      const SizedBox(height: 8),
-                      if (contact.telemetry!.batteryMilliVolts != null)
-                        _detailRow(
-                          AppLocalizations.of(context)!.voltage,
-                          '${(contact.telemetry!.batteryMilliVolts! / 1000).toStringAsFixed(3)}V'
-                          '${contact.telemetry!.batteryPercentage != null ? ' (${contact.telemetry!.batteryPercentage!.toStringAsFixed(1)}%)' : ''}',
-                        )
-                      else if (contact.telemetry!.batteryPercentage != null)
-                        _detailRow(
-                          AppLocalizations.of(context)!.battery,
-                          '${contact.telemetry!.batteryPercentage!.toStringAsFixed(1)}%',
-                        ),
-                      if (contact.telemetry!.temperature != null)
-                        _detailRow(
-                          AppLocalizations.of(context)!.temperature,
-                          '${contact.telemetry!.temperature!.toStringAsFixed(1)}°C',
-                        ),
-                      if (contact.telemetry!.humidity != null)
-                        _detailRow(
-                          AppLocalizations.of(context)!.humidity,
-                          '${contact.telemetry!.humidity!.toStringAsFixed(1)}%',
-                        ),
-                      if (contact.telemetry!.pressure != null)
-                        _detailRow(
-                          AppLocalizations.of(context)!.pressure,
-                          '${contact.telemetry!.pressure!.toStringAsFixed(1)} hPa',
-                        ),
-                      if (contact.telemetry!.gpsLocation != null)
-                        _detailRow(
-                          AppLocalizations.of(context)!.gpsTelemetry,
-                          '${contact.telemetry!.gpsLocation!.latitude.toStringAsFixed(6)}, ${contact.telemetry!.gpsLocation!.longitude.toStringAsFixed(6)}',
-                        ),
-                      _detailRow(
-                        AppLocalizations.of(context)!.updated,
-                        '${_formatTimestamp(contact.telemetry!.timestamp)} (${_formatTimeAgo(contact.telemetry!.timestamp)})',
-                      ),
-                    ],
-                    if (!currentContact.isChannel) ...[
-                      const SizedBox(height: 16),
-                      Text(
-                        'Route',
-                        style: const TextStyle(
-                          fontWeight: FontWeight.bold,
-                          fontSize: 16,
-                        ),
-                      ),
-                      const SizedBox(height: 8),
-                      _detailRow('Mode', currentContact.routeSummary),
-                      if (currentContact.routeHopCount > 0)
-                        _detailRow('Route', currentContact.routeCanonicalText),
-                      if (currentContact.routeHopCount > 0)
-                        _detailRow(
-                          'Descriptor',
-                          '0x${currentContact.routeEncodedPathLen.toRadixString(16).padLeft(2, '0').toUpperCase()}',
-                        ),
-                      const SizedBox(height: 8),
-                      Row(
-                        children: [
-                          Expanded(
-                            child: OutlinedButton.icon(
-                              onPressed: () =>
-                                  _showSetRouteDialog(context, currentContact),
-                              icon: const Icon(Icons.route),
-                              label: const Text('Set Route'),
-                            ),
-                          ),
-                          const SizedBox(width: 12),
-                          Expanded(
-                            child: OutlinedButton.icon(
-                              onPressed: currentContact.isPublicChannel
-                                  ? null
-                                  : () async {
-                                      contactsProvider.resetContactRouteLocal(
-                                        currentContact.publicKey,
-                                      );
-                                      try {
-                                        await connectionProvider.resetPath(
-                                          currentContact.publicKey,
-                                        );
-                                        if (context.mounted) {
-                                          ScaffoldMessenger.of(
-                                            context,
-                                          ).showSnackBar(
-                                            SnackBar(
-                                              content: Text(
-                                                AppLocalizations.of(
-                                                  context,
-                                                )!.pathResetInfo(
-                                                  currentContact.displayName,
-                                                ),
-                                              ),
-                                            ),
-                                          );
-                                        }
-                                      } catch (_) {
-                                        contactsProvider.setContactRouteLocal(
-                                          currentContact.publicKey,
-                                          signedEncodedPathLen:
-                                              currentContact.routeSignedPathLen,
-                                          paddedPathBytes:
-                                              currentContact.outPath,
-                                        );
-                                        if (context.mounted) {
-                                          ToastLogger.error(
-                                            context,
-                                            'Failed to reset route.',
-                                          );
-                                        }
-                                      }
-                                    },
-                              icon: const Icon(Icons.refresh),
-                              label: Text(
-                                AppLocalizations.of(context)!.resetPath,
-                              ),
-                            ),
-                          ),
-                        ],
-                      ),
-                    ],
-                    // Room Login button for room contacts (except Public Channel)
-                    if (contact.type == ContactType.room &&
-                        !contact.isPublicChannel) ...[
-                      const SizedBox(height: 24),
-                      SizedBox(
-                        width: double.infinity,
-                        child: ElevatedButton.icon(
-                          onPressed: () {
-                            Navigator.pop(context); // Close details first
-                            _showRoomLoginDialog(context, contact);
-                          },
-                          icon: const Icon(Icons.login),
-                          label: Text(
-                            roomLoginState?.isLoggedIn == true
-                                ? AppLocalizations.of(context)!.reLoginToRoom
-                                : AppLocalizations.of(context)!.loginToRoom,
-                          ),
-                          style: ElevatedButton.styleFrom(
-                            padding: const EdgeInsets.symmetric(vertical: 14),
-                            backgroundColor: _getTypeColor(
-                              contact.type,
-                              context,
-                            ),
-                            foregroundColor: Colors.white,
-                          ),
-                        ),
-                      ),
-                    ],
-                    // Delete Contact button (for all contact types except Public Channel)
-                    if (!contact.isPublicChannel) ...[
-                      const SizedBox(height: 12),
-                      SizedBox(
-                        width: double.infinity,
-                        child: OutlinedButton.icon(
-                          onPressed: () {
-                            if (contact.isChannel) {
-                              _showDeleteChannelDialog(
-                                context,
-                                contact,
-                                closeDetailsSheetOnDelete: true,
-                              );
-                              return;
-                            }
-
-                            _showDeleteConfirmation(
-                              context,
-                              contact,
-                              closeDetailsSheetOnDelete: true,
-                            );
-                          },
-                          icon: const Icon(Icons.delete_outline),
-                          label: Text(
-                            contact.isChannel
-                                ? AppLocalizations.of(context)!.deleteChannel
-                                : AppLocalizations.of(context)!.deleteContact,
-                          ),
-                          style: OutlinedButton.styleFrom(
-                            padding: const EdgeInsets.symmetric(vertical: 14),
-                            side: const BorderSide(color: Colors.red),
-                            foregroundColor: Colors.red,
-                          ),
-                        ),
-                      ),
-                    ],
-                  ],
-                ),
-              ),
-            ],
-          );
-        },
-      ),
-    );
-  }
-
  Future<void> _showSetRouteDialog(
    BuildContext context,
    Contact contact,
@@ -996,67 +566,6 @@ class ContactTile extends StatelessWidget {
    }
  }

-  Widget _detailRow(String label, String value) {
-    return Padding(
-      padding: const EdgeInsets.symmetric(vertical: 4),
-      child: Row(
-        crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
-          SizedBox(
-            width: 100,
-            child: Text(
-              '$label:',
-              style: const TextStyle(fontWeight: FontWeight.w500),
-            ),
-          ),
-          Expanded(child: Text(value)),
-        ],
-      ),
-    );
-  }
-
-  Widget _detailRowWithCopy(BuildContext context, String label, String value) {
-    return Padding(
-      padding: const EdgeInsets.symmetric(vertical: 4),
-      child: Row(
-        crossAxisAlignment: CrossAxisAlignment.center,
-        children: [
-          SizedBox(
-            width: 100,
-            child: Text(
-              '$label:',
-              style: const TextStyle(fontWeight: FontWeight.w500),
-            ),
-          ),
-          Expanded(child: Text(value)),
-          const SizedBox(width: 8),
-          InkWell(
-            onTap: () {
-              Clipboard.setData(ClipboardData(text: value));
-              ScaffoldMessenger.of(context).showSnackBar(
-                SnackBar(
-                  content: Text(
-                    AppLocalizations.of(context)!.copiedToClipboard(label),
-                  ),
-                  duration: const Duration(seconds: 2),
-                ),
-              );
-            },
-            borderRadius: BorderRadius.circular(4),
-            child: Padding(
-              padding: const EdgeInsets.all(4),
-              child: Icon(
-                Icons.copy,
-                size: 16,
-                color: Theme.of(context).colorScheme.primary,
-              ),
-            ),
-          ),
-        ],
-      ),
-    );
-  }
-
  Widget _buildLocationMeta(
    BuildContext context,
    double latitude,
@@ -1124,75 +633,6 @@ class ContactTile extends StatelessWidget {
    );
  }

-  /// Convert to Degrees Minutes Seconds (DMS) format
-  String _convertToDMS(double lat, double lon) {
-    String latDir = lat >= 0 ? 'N' : 'S';
-    String lonDir = lon >= 0 ? 'E' : 'W';
-
-    lat = lat.abs();
-    lon = lon.abs();
-
-    int latDeg = lat.floor();
-    double latMinDec = (lat - latDeg) * 60;
-    int latMin = latMinDec.floor();
-    double latSec = (latMinDec - latMin) * 60;
-
-    int lonDeg = lon.floor();
-    double lonMinDec = (lon - lonDeg) * 60;
-    int lonMin = lonMinDec.floor();
-    double lonSec = (lonMinDec - lonMin) * 60;
-
-    return '$latDeg°$latMin\'${latSec.toStringAsFixed(2)}"$latDir, $lonDeg°$lonMin\'${lonSec.toStringAsFixed(2)}"$lonDir';
-  }
-
-  /// Convert to Degrees Decimal Minutes (DDM) format
-  String _convertToDDM(double lat, double lon) {
-    String latDir = lat >= 0 ? 'N' : 'S';
-    String lonDir = lon >= 0 ? 'E' : 'W';
-
-    lat = lat.abs();
-    lon = lon.abs();
-
-    int latDeg = lat.floor();
-    double latMin = (lat - latDeg) * 60;
-
-    int lonDeg = lon.floor();
-    double lonMin = (lon - lonDeg) * 60;
-
-    return '$latDeg° ${latMin.toStringAsFixed(4)}\'$latDir, $lonDeg° ${lonMin.toStringAsFixed(4)}\'$lonDir';
-  }
-
-  /// Convert to MGRS (Military Grid Reference System) format
-  /// Simplified implementation - returns approximate grid zone
-  String _convertToMGRS(double lat, double lon) {
-    // Zone number (1-60)
-    int zone = ((lon + 180) / 6).floor() + 1;
-
-    // Zone letter (C-X, excluding I and O)
-    const letters = 'CDEFGHJKLMNPQRSTUVWX';
-    int letterIndex = ((lat + 80) / 8).floor();
-    if (letterIndex < 0) letterIndex = 0;
-    if (letterIndex >= letters.length) letterIndex = letters.length - 1;
-    String letter = letters[letterIndex];
-
-    // Simplified - just show zone designation
-    // Full MGRS would require UTM conversion library
-    return '$zone$letter (approximate)';
-  }
-
-  Color _getTypeColor(ContactType type, BuildContext context) {
-    switch (type) {
-      case ContactType.chat:
-        return Theme.of(context).colorScheme.primary;
-      case ContactType.repeater:
-        return Colors.green;
-      case ContactType.room:
-        return Colors.orange;
-      default:
-        return Colors.grey;
-    }
-  }
-
  /// Get room login status color
  Color _getRoomStatusColor(RoomLoginState state) {
    if (!state.isLoggedIn) {
@@ -1215,41 +655,6 @@ class ContactTile extends StatelessWidget {
    return Icons.check; // Check for logged in (non-admin)
  }

-  String _formatTimestamp(DateTime timestamp) {
-    final now = DateTime.now();
-    final today = DateTime(now.year, now.month, now.day);
-    final timestampDate = DateTime(
-      timestamp.year,
-      timestamp.month,
-      timestamp.day,
-    );
-
-    if (timestampDate == today) {
-      // Today - show time only
-      return '${timestamp.hour.toString().padLeft(2, '0')}:${timestamp.minute.toString().padLeft(2, '0')}:${timestamp.second.toString().padLeft(2, '0')}';
-    } else {
-      // Another day - show date and time
-      return '${timestamp.year}-${timestamp.month.toString().padLeft(2, '0')}-${timestamp.day.toString().padLeft(2, '0')} ${timestamp.hour.toString().padLeft(2, '0')}:${timestamp.minute.toString().padLeft(2, '0')}';
-    }
-  }
-
-  String _formatTimeAgo(DateTime timestamp) {
-    final now = DateTime.now();
-    final diff = now.difference(timestamp);
-
-    if (diff.inSeconds < 60) {
-      return '${diff.inSeconds}s ago';
-    } else if (diff.inMinutes < 60) {
-      return '${diff.inMinutes}m ago';
-    } else if (diff.inHours < 24) {
-      return '${diff.inHours}h ago';
-    } else if (diff.inDays == 1) {
-      return 'yesterday';
-    } else {
-      return '${diff.inDays}d ago';
-    }
-  }
-
  /// Show delete channel confirmation dialog
  void _showDeleteChannelDialog(
    BuildContext context,
--- a/lib/widgets/messages/image_message_bubble.dart
+++ b/lib/widgets/messages/image_message_bubble.dart
@@ -403,15 +403,6 @@ class _ImageMessageBubbleState extends State<ImageMessageBubble> {
      }
    }

-    if (!sender.routeSupportsLegacyRawTransport) {
-      _clearRequestState();
-      await _showBlockingAlert(
-        'Cannot fetch image',
-        'Sender route uses 3-byte hashes. Raw media fetch is not supported in this client yet.',
-      );
-      return;
-    }
-
    if (sender.routeHopCount >= 2) {
      _showToast(
        'Image fetch over ${sender.routeHopCount} hops may take a while.',
@@ -462,7 +453,7 @@ class _ImageMessageBubbleState extends State<ImageMessageBubble> {
      );
      await conn.sendRawVoicePacket(
        contactPath: sender.outPath,
-        contactPathLen: sender.routeSignedPathLen,
+        contactPathLen: sender.routeEncodedPathLen,
        payload: payload,
      );
    } catch (_) {
--- a/lib/widgets/messages/message_bubble.dart
+++ b/lib/widgets/messages/message_bubble.dart
@@ -27,6 +27,7 @@ import '../../utils/tictactoe_message_parser.dart';
 import '../../utils/location_formats.dart';
 import '../../l10n/app_localizations.dart';
 import '../../utils/message_extensions.dart';
+import '../../utils/log_rx_route_decoder.dart';
 import '../../models/message_transfer_details.dart';
 import 'voice_message_bubble.dart';
 import 'image_message_bubble.dart';
@@ -1269,12 +1270,10 @@ class _MessageBubbleState extends State<MessageBubble> {

      // Logged frame format:
      // [0]=response code 0x88, [1]=snrRaw, [2]=rssi, [3]=packet header, [4]=pathLen
-      final raw = log.rawData;
-      final payloadType = (raw[3] >> 2) & 0x0F;
-      final pathLen = raw[4];
-      if (payloadType != expectedPayloadType) continue;
-      if (pathLen != message.pathLen) continue;
-      if (raw.length < 5 + pathLen) continue;
+      final decoded = LogRxRouteDecoder.decode(log.rawData);
+      if (decoded == null) continue;
+      if (decoded.payloadType != expectedPayloadType) continue;
+      if (decoded.hopCount != message.pathLen) continue;

      final deltaMs =
          (log.timestamp.difference(message.receivedAt).inMilliseconds).abs();
@@ -1290,11 +1289,9 @@ class _MessageBubbleState extends State<MessageBubble> {

  List<int>? _extractPathBytesFromLog(BlePacketLog? log) {
    if (log == null) return null;
-    final raw = log.rawData;
-    if (raw.length < 6) return null;
-    final pathLen = raw[4];
-    if (pathLen <= 0 || raw.length < 5 + pathLen) return null;
-    return raw.sublist(5, 5 + pathLen);
+    final decoded = LogRxRouteDecoder.decode(log.rawData);
+    if (decoded == null || decoded.pathBytes.isEmpty) return null;
+    return decoded.pathBytes;
  }

  void _showDeleteConfirmation(BuildContext context) {
--- a/lib/widgets/messages/message_trace_sheet.dart
+++ b/lib/widgets/messages/message_trace_sheet.dart
@@ -1,6 +1,7 @@
 // ignore_for_file: use_null_aware_elements

 import 'dart:math' as math;
+import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart' as flutter_map;
 import 'package:latlong2/latlong.dart';
@@ -60,7 +61,13 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
      return trace;
    }

-    final remoteNodes = await MeshMapNodesService.fetchNodes(
+    unawaited(
+      MeshMapNodesService.syncInBackgroundIfStale(
+        cacheTtl: MeshMapNodesService.traceCacheTtl,
+      ),
+    );
+
+    final remoteNodes = await MeshMapNodesService.loadCachedNodes(
      cacheTtl: MeshMapNodesService.traceCacheTtl,
    );
    trace = _buildTraceResult(
@@ -516,13 +523,10 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
    for (final log in logs) {
      if (log.responseCode != 0x88) continue; // pushLogRxData
      if (log.rawData.length < 6) continue;
-      final raw = log.rawData;
-      final header = raw[3];
-      final payloadType = (header >> 2) & 0x0F;
-      final pathLen = raw[4];
-      if (payloadType != expectedPayloadType) continue;
-      if (pathLen != message.pathLen) continue;
-      if (raw.length < 5 + pathLen) continue;
+      final decoded = LogRxRouteDecoder.decode(log.rawData);
+      if (decoded == null) continue;
+      if (decoded.payloadType != expectedPayloadType) continue;
+      if (decoded.hopCount != message.pathLen) continue;

      final deltaMs =
          (log.timestamp.difference(message.receivedAt).inMilliseconds).abs();
@@ -533,9 +537,11 @@ class _MessageTraceSheetState extends State<MessageTraceSheet> {
    }

    if (bestLog == null || bestDeltaMs > 30000) return null;
-    final raw = bestLog.rawData;
-    final pathLen = raw[4];
-    return raw.sublist(5, 5 + pathLen);
+    final decoded = LogRxRouteDecoder.decode(bestLog.rawData);
+    if (decoded == null || decoded.pathBytes.isEmpty) {
+      return null;
+    }
+    return decoded.pathBytes;
  }

  List<MeshMapNode?> _matchNodesFromPathHashes({
--- a/lib/widgets/messages/voice_message_bubble.dart
+++ b/lib/widgets/messages/voice_message_bubble.dart
@@ -366,15 +366,6 @@ class _VoiceMessageBubbleState extends State<VoiceMessageBubble> {
      }
    }

-    if (!sender.routeSupportsLegacyRawTransport) {
-      _clearRequestState();
-      await _showBlockingAlert(
-        'Cannot fetch voice',
-        'Sender route uses 3-byte hashes. Raw media fetch is not supported in this client yet.',
-      );
-      return;
-    }
-
    if (sender.routeHopCount >= 2) {
      _showToast(
        'Voice fetch over ${sender.routeHopCount} hops may take a while.',
@@ -415,10 +406,7 @@ class _VoiceMessageBubbleState extends State<VoiceMessageBubble> {
            missingIndices: missing,
            requesterKey6: requesterKey6,
          )
-        : VoiceFetchRequest(
-            sessionId: sessionId,
-            requesterKey6: requesterKey6,
-          );
+        : VoiceFetchRequest(sessionId: sessionId, requesterKey6: requesterKey6);

    try {
      debugPrint(
@@ -426,7 +414,7 @@ class _VoiceMessageBubbleState extends State<VoiceMessageBubble> {
      );
      await connectionProvider.sendRawVoicePacket(
        contactPath: sender.outPath,
-        contactPathLen: sender.routeSignedPathLen,
+        contactPathLen: sender.routeEncodedPathLen,
        payload: request.encodeBinary(),
      );
    } catch (_) {
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -796,7 +796,7 @@ packages:
    description:
      path: "."
      ref: main
-      resolved-ref: cea66b5251135c7f9b84f15c0878d4c8af6e88e9
+      resolved-ref: bd3744ee21376b81be5f852cd0c1a82c0df40460
      url: "https://github.com/dz0ny/meshcore_client.git"
    source: git
    version: "0.1.0"
@@ -1265,10 +1265,10 @@ packages:
    dependency: transitive
    description:
      name: sqflite_android
-      sha256: ecd684501ebc2ae9a83536e8b15731642b9570dc8623e0073d227d0ee2bfea88
+      sha256: "881e28efdcc9950fd8e9bb42713dcf1103e62a2e7168f23c9338d82db13dec40"
      url: "https://pub.dev"
    source: hosted
-    version: "2.4.2+2"
+    version: "2.4.2+3"
  sqflite_common:
    dependency: transitive
    description:
--- a/test/models/contact_route_codec_test.dart
+++ b/test/models/contact_route_codec_test.dart
@@ -104,7 +104,7 @@ void main() {
      expect(contact.routeHashSize, 3);
      expect(contact.routeHopCount, 2);
      expect(contact.routeCanonicalText, 'AABBCC,DDEEFF');
-      expect(contact.routeSupportsLegacyRawTransport, isFalse);
+      expect(contact.routeSupportsLegacyRawTransport, isTrue);
    });

    test('treats -1 as unknown route', () {
--- a/test/providers/helpers/raw_session_retransmit_test.dart
+++ b/test/providers/helpers/raw_session_retransmit_test.dart
@@ -47,6 +47,63 @@ void main() {
      expect(ok, isFalse);
    });

+    test('returns false when requester has no learned path', () async {
+      final ok = await serveCachedSessionFragments<_Fragment>(
+        providerLabel: 'TestProvider',
+        sessionId: 'deadbeef',
+        requester: _buildContact(outPathLen: -1),
+        fragments: [
+          _Fragment(0, Uint8List.fromList([1])),
+        ],
+        maxDirectPayloadHops: 3,
+        indexOf: (f) => f.index,
+        encodeBinary: (f) => f.payload,
+        sendRawPacket:
+            ({
+              required contactPath,
+              required contactPathLen,
+              required payload,
+            }) async {},
+      );
+
+      expect(ok, isFalse);
+    });
+
+    test('returns false when requester path payload is empty', () async {
+      final requester = Contact(
+        publicKey: Uint8List.fromList(List<int>.generate(32, (i) => i)),
+        type: ContactType.chat,
+        flags: 0,
+        outPathLen: 1,
+        outPath: Uint8List(0),
+        advName: 'Requester',
+        lastAdvert: DateTime.now().millisecondsSinceEpoch ~/ 1000,
+        advLat: 0,
+        advLon: 0,
+        lastMod: DateTime.now().millisecondsSinceEpoch ~/ 1000,
+      );
+
+      final ok = await serveCachedSessionFragments<_Fragment>(
+        providerLabel: 'TestProvider',
+        sessionId: 'deadbeef',
+        requester: requester,
+        fragments: [
+          _Fragment(0, Uint8List.fromList([1])),
+        ],
+        maxDirectPayloadHops: 3,
+        indexOf: (f) => f.index,
+        encodeBinary: (f) => f.payload,
+        sendRawPacket:
+            ({
+              required contactPath,
+              required contactPathLen,
+              required payload,
+            }) async {},
+      );
+
+      expect(ok, isFalse);
+    });
+
    test('sends only requested indices', () async {
      final sent = <Uint8List>[];
      final ok = await serveCachedSessionFragments<_Fragment>(
--- a/test/providers/messages_provider_voice_test.dart
+++ b/test/providers/messages_provider_voice_test.dart
@@ -1,5 +1,6 @@
 import 'dart:typed_data';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:meshcore_sar_app/models/contact.dart';
 import 'package:meshcore_sar_app/models/message.dart';
 import 'package:meshcore_sar_app/models/message_contact_location.dart';
 import 'package:meshcore_sar_app/providers/messages_provider.dart';
@@ -11,6 +12,30 @@ import 'package:shared_preferences/shared_preferences.dart';
 void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

+  Contact _buildContact({
+    required List<int> prefix,
+    required ContactType type,
+    String name = 'Test Contact',
+  }) {
+    final key = Uint8List.fromList([
+      ...prefix,
+      ...List<int>.generate(26, (index) => index),
+    ]);
+
+    return Contact(
+      publicKey: key,
+      type: type,
+      flags: 0,
+      outPathLen: 0,
+      outPath: Uint8List(64),
+      advName: name,
+      lastAdvert: DateTime.now().millisecondsSinceEpoch ~/ 1000,
+      advLat: 0,
+      advLon: 0,
+      lastMod: DateTime.now().millisecondsSinceEpoch ~/ 1000,
+    );
+  }
+
  group('MessagesProvider voice detection', () {
    setUp(() {
      SharedPreferences.setMockInitialValues({});
@@ -190,5 +215,60 @@ void main() {
      expect(restoredVoice?.downloaders.single.requesterKey6, '112233445566');
      expect(restoredImage?.downloaders.single.requesterName, equals('Bob'));
    });
+
+    test('marks only the selected contact destination as read', () {
+      final provider = MessagesProvider();
+      final alice = _buildContact(
+        prefix: [0x10, 0x11, 0x12, 0x13, 0x14, 0x15],
+        type: ContactType.chat,
+        name: 'Alice',
+      );
+      final bob = _buildContact(
+        prefix: [0x20, 0x21, 0x22, 0x23, 0x24, 0x25],
+        type: ContactType.chat,
+        name: 'Bob',
+      );
+
+      provider.addMessage(
+        Message(
+          id: 'alice-incoming',
+          messageType: MessageType.contact,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000100,
+          text: 'Alice unread',
+          receivedAt: DateTime.now(),
+          senderPublicKeyPrefix: alice.publicKey.sublist(0, 6),
+        ),
+      );
+      provider.addMessage(
+        Message(
+          id: 'bob-incoming',
+          messageType: MessageType.contact,
+          pathLen: 1,
+          textType: MessageTextType.plain,
+          senderTimestamp: 1700000101,
+          text: 'Bob unread',
+          receivedAt: DateTime.now(),
+          senderPublicKeyPrefix: bob.publicKey.sublist(0, 6),
+        ),
+      );
+
+      provider.markDestinationAsRead(
+        destinationType: 'contact',
+        contact: alice,
+      );
+
+      final aliceMessage = provider.messages.firstWhere(
+        (message) => message.id == 'alice-incoming',
+      );
+      final bobMessage = provider.messages.firstWhere(
+        (message) => message.id == 'bob-incoming',
+      );
+
+      expect(aliceMessage.isRead, isTrue);
+      expect(bobMessage.isRead, isFalse);
+      expect(provider.unreadCount, equals(1));
+    });
  });
 }
--- a/test/services/mesh_map_nodes_service_test.dart
+++ b/test/services/mesh_map_nodes_service_test.dart
@@ -0,0 +1,97 @@
+import 'dart:convert';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:http/http.dart' as http;
+import 'package:http/testing.dart';
+import 'package:meshcore_sar_app/services/mesh_map_nodes_service.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  setUp(() async {
+    SharedPreferences.setMockInitialValues({});
+    await MeshMapNodesService.clearCache();
+  });
+
+  test('fetchNodes persists nodes and cached lookup works offline', () async {
+    final client = MockClient((request) async {
+      expect(
+        request.url.toString(),
+        'https://api.meshcore.nz/api/v1/map/nodes',
+      );
+      return http.Response(
+        jsonEncode({
+          'nodes': [
+            {
+              'type': 1,
+              'name': 'Alpha',
+              'public_key': 'aa11bb22',
+              'latitude': 46.05,
+              'longitude': 14.50,
+              'updated_at': 123456,
+            },
+          ],
+        }),
+        200,
+      );
+    });
+
+    final nodes = await MeshMapNodesService.fetchNodes(client: client);
+    final cached = await MeshMapNodesService.fetchNodes(allowNetwork: false);
+
+    expect(nodes, hasLength(1));
+    expect(cached, hasLength(1));
+    expect(cached.first.name, 'Alpha');
+    expect(await MeshMapNodesService.hasFreshCache(), isTrue);
+  });
+
+  test('loadCachedNodes ignores stale persisted cache', () async {
+    SharedPreferences.setMockInitialValues({
+      'mesh_map_nodes_cache_v1': jsonEncode([
+        {
+          'type': 1,
+          'name': 'Old node',
+          'public_key': 'bb22cc33',
+          'latitude': 46.05,
+          'longitude': 14.50,
+          'updated_at': 123456,
+        },
+      ]),
+      'mesh_map_nodes_cache_timestamp_v1': DateTime.now()
+          .subtract(const Duration(hours: 25))
+          .millisecondsSinceEpoch,
+    });
+
+    final nodes = await MeshMapNodesService.loadCachedNodes();
+
+    expect(nodes, isEmpty);
+    expect(await MeshMapNodesService.hasFreshCache(), isFalse);
+  });
+
+  test('clearCache removes persisted online trace database', () async {
+    final client = MockClient(
+      (_) async => http.Response(
+        jsonEncode({
+          'nodes': [
+            {
+              'type': 1,
+              'name': 'Alpha',
+              'public_key': 'aa11bb22',
+              'latitude': 46.05,
+              'longitude': 14.50,
+              'updated_at': 123456,
+            },
+          ],
+        }),
+        200,
+      ),
+    );
+
+    await MeshMapNodesService.fetchNodes(client: client);
+    await MeshMapNodesService.clearCache();
+
+    expect(await MeshMapNodesService.loadCachedNodes(), isEmpty);
+    expect(await MeshMapNodesService.cachedAt(), isNull);
+  });
+}
--- a/test/utils/avatar_label_helper_test.dart
+++ b/test/utils/avatar_label_helper_test.dart
@@ -22,5 +22,13 @@ void main() {
    test('keeps non-hash labels at two characters', () {
      expect(AvatarLabelHelper.buildLabel('abc'), 'AB');
    });
+
+    test('strips emoji when building fallback initials', () {
+      expect(AvatarLabelHelper.buildLabel('Charlie 🙂 Delta'), 'CD');
+    });
+
+    test('strips leading emoji when building fallback initials', () {
+      expect(AvatarLabelHelper.buildLabel('🙂 Charlie'), 'CH');
+    });
  });
 }
--- a/test/utils/contact_grouping_test.dart
+++ b/test/utils/contact_grouping_test.dart
@@ -0,0 +1,120 @@
+import 'dart:typed_data';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:meshcore_sar_app/models/contact.dart';
+import 'package:meshcore_sar_app/utils/contact_grouping.dart';
+
+void main() {
+  Contact buildContact({
+    required int seed,
+    required String name,
+    required DateTime lastSeen,
+  }) {
+    return Contact(
+      publicKey: Uint8List.fromList(
+        List<int>.generate(32, (index) => (seed + index) % 255),
+      ),
+      type: ContactType.chat,
+      flags: 0,
+      outPathLen: 0,
+      outPath: Uint8List(64),
+      advName: name,
+      lastAdvert: lastSeen.millisecondsSinceEpoch ~/ 1000,
+      advLat: 0,
+      advLon: 0,
+      lastMod: lastSeen.millisecondsSinceEpoch ~/ 1000,
+    );
+  }
+
+  group('ContactGrouping.buildItems', () {
+    test(
+      'groups prefixed contacts only when at least four share the prefix',
+      () {
+        final now = DateTime(2026, 3, 10, 12);
+        final items = ContactGrouping.buildItems([
+          buildContact(seed: 1, name: 'SI-1', lastSeen: now),
+          buildContact(
+            seed: 2,
+            name: 'SI-2',
+            lastSeen: now.subtract(const Duration(minutes: 1)),
+          ),
+          buildContact(
+            seed: 3,
+            name: 'SI-3',
+            lastSeen: now.subtract(const Duration(minutes: 2)),
+          ),
+          buildContact(
+            seed: 4,
+            name: 'SI-4',
+            lastSeen: now.subtract(const Duration(minutes: 3)),
+          ),
+          buildContact(
+            seed: 5,
+            name: 'OTHER',
+            lastSeen: now.subtract(const Duration(minutes: 4)),
+          ),
+        ]);
+
+        expect(items, hasLength(2));
+        expect(items.first.isGroup, isTrue);
+        expect(items.first.group!.label, 'SI-');
+        expect(
+          items.first.group!.contacts.map((contact) => contact.displayName),
+          ['SI-1', 'SI-2', 'SI-3', 'SI-4'],
+        );
+        expect(items.last.contact!.displayName, 'OTHER');
+      },
+    );
+
+    test('does not group when only three contacts share a prefix', () {
+      final now = DateTime(2026, 3, 10, 12);
+      final items = ContactGrouping.buildItems([
+        buildContact(seed: 1, name: 'SI-1', lastSeen: now),
+        buildContact(
+          seed: 2,
+          name: 'SI-2',
+          lastSeen: now.subtract(const Duration(minutes: 1)),
+        ),
+        buildContact(
+          seed: 3,
+          name: 'SI-3',
+          lastSeen: now.subtract(const Duration(minutes: 2)),
+        ),
+      ]);
+
+      expect(items, hasLength(3));
+      expect(items.every((item) => !item.isGroup), isTrue);
+    });
+
+    test('orders groups and ungrouped contacts by latest last seen', () {
+      final now = DateTime(2026, 3, 10, 12);
+      final items = ContactGrouping.buildItems([
+        buildContact(
+          seed: 1,
+          name: 'Lone',
+          lastSeen: now.subtract(const Duration(minutes: 1)),
+        ),
+        buildContact(seed: 2, name: 'SI-1', lastSeen: now),
+        buildContact(
+          seed: 3,
+          name: 'SI-2',
+          lastSeen: now.subtract(const Duration(minutes: 2)),
+        ),
+        buildContact(
+          seed: 4,
+          name: 'SI-3',
+          lastSeen: now.subtract(const Duration(minutes: 3)),
+        ),
+        buildContact(
+          seed: 5,
+          name: 'SI-4',
+          lastSeen: now.subtract(const Duration(minutes: 4)),
+        ),
+      ]);
+
+      expect(items, hasLength(2));
+      expect(items.first.isGroup, isTrue);
+      expect(items.last.contact!.displayName, 'Lone');
+    });
+  });
+}
--- a/test/utils/log_rx_route_decoder_test.dart
+++ b/test/utils/log_rx_route_decoder_test.dart
@@ -24,12 +24,37 @@ void main() {

      expect(decoded, isNotNull);
      expect(decoded!.payloadType, 0x01);
+      expect(decoded.pathDescriptor, 0x04);
      expect(decoded.pathBytes, [0xc2, 0xba, 0x5f, 0xde]);
      expect(decoded.hashSize, 2);
      expect(decoded.hopHashes, ['c2ba', '5fde']);
      expect(decoded.originalSenderHashHex, 'c2ba');
    });

+    test('parses encoded descriptor with 2-byte hashes', () {
+      final packet = Uint8List.fromList([
+        0x88,
+        0x37,
+        0xae,
+        0x05,
+        0x42,
+        0xc2,
+        0xba,
+        0x5f,
+        0xde,
+        0x5c,
+      ]);
+
+      final decoded = LogRxRouteDecoder.decode(packet);
+
+      expect(decoded, isNotNull);
+      expect(decoded!.pathDescriptor, 0x42);
+      expect(decoded.pathBytes, [0xc2, 0xba, 0x5f, 0xde]);
+      expect(decoded.hashSize, 2);
+      expect(decoded.hopCount, 2);
+      expect(decoded.hopHashes, ['c2ba', '5fde']);
+    });
+
    test('uses preferred hash size when packet length is ambiguous', () {
      final packet = Uint8List.fromList([
        0x88,
--- a/test/widgets/recipient_selector_sheet_test.dart
+++ b/test/widgets/recipient_selector_sheet_test.dart
@@ -52,7 +52,7 @@ void main() {
              contact.publicKeyHex: 3,
            },
            currentDestinationType: 'all',
-            onSelect: (_, __) {},
+            onSelect: (selectedContact, destinationType) {},
          ),
        ),
      ),
Author	SHA1	Message	Date
Janez T	9deb563c05	Align and compact channel cards	2026-03-10 09:45:16 +01:00
Janez T	15ac3e2798	Align channel avatars and compact	2026-03-10 09:13:24 +01:00
Janez T	97addf7ba6	Hide last seen and tweak channels	2026-03-10 09:06:30 +01:00
Janez T	025bd737e7	Group contacts by last seen	2026-03-10 08:54:55 +01:00
Janez T	07b675dec6	Align repeater tile behavior	2026-03-10 08:48:04 +01:00
Janez T	d675ce18dd	Use LogRxRouteDecoder in AppProvider	2026-03-10 08:43:58 +01:00
Janez T	a8e31bb2e8	Investigate DEVICE_QUERY timeout	2026-03-09 19:59:29 +01:00
Janez T	3cd96ba961	Fix scan command timeout	2026-03-09 19:53:36 +01:00
Janez T	a98fc6314e	Analyze BLE MeshCore scan log	2026-03-09 19:45:17 +01:00
Janez T	ae1ea71f58	Analyze MeshCore BLE scan logs	2026-03-09 19:39:14 +01:00
Janez T	4dff79cd7b	Update client ref and deps	2026-03-09 19:33:42 +01:00
Janez T	cbcb329c70	Fix NotificationService platform	2026-03-09 19:23:35 +01:00
Janez T	7abf96abf2	Point web build to meshcore-sar	2026-03-09 19:17:26 +01:00
Janez T	13bf74178c	Update iOS TestFlight link	2026-03-09 16:31:42 +01:00
Janez T	66a00c9569	Remove sender name from notification	2026-03-08 21:12:08 +01:00
Janez T	b60fa008eb	Fix ios notifications	2026-03-08 21:07:59 +01:00