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/connector/meshcore_protocol.dart

@@ -209,6 +209,8 @@ const int cmdSetCustomVar = 41;
 const int cmdSendBinaryReq = 50;
 const int cmdSetAutoAddConfig = 58;
 const int cmdGetAutoAddConfig = 59;
+const int cmdSetPathHashMode = 61;
+const int cmdGetStats = 56;
 
 // Text message types
 const int txtTypePlain = 0;
@@ -245,6 +247,11 @@ const int respCodeChannelMsgRecvV3 = 17;
 const int respCodeChannelInfo = 18;
 const int respCodeCustomVars = 21;
 const int respCodeAutoAddConfig = 25;
+const int respCodeStats = 24;
+
+const int statsTypeCore = 0;
+const int statsTypeRadio = 1;
+const int statsTypePackets = 2;
 
 // Push codes (async from device)
 const int pushCodeAdvert = 0x80;
@@ -554,6 +561,17 @@ Uint8List buildGetBattAndStorageFrame() {
   return Uint8List.fromList([cmdGetBattAndStorage]);
 }
 
+/// Companion radio stats: [56][statsType] where statsType is statsTypeCore/Radio/Packets.
+Uint8List buildGetStatsFrame(int statsType) {
+  return Uint8List.fromList([cmdGetStats, statsType & 0xFF]);
+}
+
+/// Path hash width on air: [61][0][mode], mode 0..2 → (mode+1) bytes per hop hash.
+Uint8List buildSetPathHashModeFrame(int mode) {
+  final m = mode.clamp(0, 2);
+  return Uint8List.fromList([cmdSetPathHashMode, 0, m]);
+}
+
 // Build CMD_SET_DEVICE_TIME frame
 Uint8List buildSetDeviceTimeFrame(int timestamp) {
   final writer = BufferWriter();