Add radio statistics and localization updates

- Implemented radio statistics features in multiple screens including chat, channels, and settings.
- Added localization for new strings in Swedish, Ukrainian, and Chinese.
- Introduced a setting to jump to the oldest unread message in chat and channels.
- Enhanced path management and display for contacts and messages.
- Updated app settings to include new boolean for jumping to the oldest unread message.
- Improved battery indicator and radio stats display in the app bar.
- Removed unused wakelock_plus dependency and updated plugin registrations.

lib/screens/channel_chat_screen.dart

@@ -26,6 +26,7 @@ import '../widgets/gif_message.dart';
 import '../widgets/jump_to_bottom_button.dart';
 import '../widgets/gif_picker.dart';
 import '../widgets/message_status_icon.dart';
+import '../widgets/radio_stats_entry.dart';
 import 'channel_message_path_screen.dart';
 import 'map_screen.dart';
 
@@ -47,6 +48,8 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
   bool _isLoadingOlder = false;
 
   MeshCoreConnector? _connector;
+  DateTime? _lastChannelSendAt;
+  bool _channelSkipNextBottomSnap = false;
 
   @override
   void initState() {
@@ -55,11 +58,45 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     _scrollController.onScrollNearTop = _loadOlderMessages;
     SchedulerBinding.instance.addPostFrameCallback((_) {
       if (!mounted) return;
-      _connector = context.read<MeshCoreConnector>();
-      _connector?.setActiveChannel(widget.channel.index);
+      final connector = context.read<MeshCoreConnector>();
+      final settings = context.read<AppSettingsService>().settings;
+      final idx = widget.channel.index;
+      final unread = connector.getUnreadCountForChannelIndex(idx);
+      ChannelMessage? anchor;
+      if (settings.jumpToOldestUnread && unread > 0) {
+        anchor = _findOldestUnreadChannelAnchor(
+          connector.getChannelMessages(widget.channel),
+          unread,
+        );
+      }
+      connector.setActiveChannel(idx);
+      _connector = connector;
+      if (anchor != null) {
+        _channelSkipNextBottomSnap = true;
+        WidgetsBinding.instance.addPostFrameCallback((_) {
+          if (!mounted) return;
+          _scrollToMessage(anchor!.messageId);
+        });
+      }
     });
   }
 
+  ChannelMessage? _findOldestUnreadChannelAnchor(
+    List<ChannelMessage> messages,
+    int unreadCount,
+  ) {
+    if (unreadCount <= 0 || messages.isEmpty) return null;
+    var n = 0;
+    ChannelMessage? oldest;
+    for (final m in messages.reversed) {
+      if (m.isOutgoing) continue;
+      n++;
+      oldest = m;
+      if (n >= unreadCount) break;
+    }
+    return oldest;
+  }
+
   void _onTextFieldFocusChange() {
     if (_textFieldFocusNode.hasFocus && mounted) {
       _scrollController.handleKeyboardOpen();
@@ -167,6 +204,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
         ),
         centerTitle: false,
         actions: [
+          const RadioStatsIconButton(),
           PopupMenuButton<String>(
             icon: const Icon(Icons.more_vert),
             onSelected: (value) {
@@ -243,6 +281,10 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
 
                   // Auto-scroll to bottom if user is already at bottom
                   WidgetsBinding.instance.addPostFrameCallback((_) {
+                    if (_channelSkipNextBottomSnap) {
+                      _channelSkipNextBottomSnap = false;
+                      return;
+                    }
                     _scrollController.scrollToBottomIfAtBottom();
                   });
 
@@ -468,11 +510,6 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                                 style: TextStyle(
                                   fontSize: bodyFontSize * textScale,
                                 ),
-                                linkStyle: TextStyle(
-                                  fontSize: bodyFontSize * textScale,
-                                  color: Colors.green,
-                                  decoration: TextDecoration.underline,
-                                ),
                               ),
                             ),
                             if (!enableTracing && isOutgoing) ...[
@@ -1079,6 +1116,16 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     final text = _textController.text.trim();
     if (text.isEmpty) return;
 
+    final now = DateTime.now();
+    if (_lastChannelSendAt != null &&
+        now.difference(_lastChannelSendAt!) < const Duration(seconds: 1)) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(context.l10n.chat_sendCooldown)),
+      );
+      return;
+    }
+    _lastChannelSendAt = now;
+
     final connector = context.read<MeshCoreConnector>();
 
     String messageText = text;