feat(device): TX/RX 日志附加完整 JSON 字符串

lib/features/device/providers/device_info_provider.dart

@@ -1,6 +1,7 @@
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import '../models/device_state.dart';
+import '../services/device_log.dart';
 import '../services/device_message.dart';
 import '../services/device_message_service.dart';
 import 'serial_provider.dart';
@@ -27,18 +28,30 @@ class DeviceInfoNotifier extends StateNotifier<DeviceState> {
     final light = _parseLight(data['light_status']);
     final door = _parseDoor(data['door_status']);
     final task = _parseTask(data['task_status']);
+    final prev = state;
+    final changed = prev.lightStatus != light ||
+        prev.doorStatus != door ||
+        prev.taskStatus != task;
     state = state.copyWith(
       lightStatus: light,
       doorStatus: door,
       taskStatus: task,
       lastInfoAt: DateTime.now(),
     );
+    if (changed) {
+      DeviceLog.info(
+        'device_info updated: light=${light.name} door=${door.name} task=${task.name}',
+      );
+    }
   }
 
   /// 主动查询设备信息（发送 need_ack=true 的 create_task 之外的 device_info 请求，
   /// 具体取决于下位机协议约定；目前仅作占位）。
   Future<void> queryDeviceInfo() async {
-    if (!_msgService.canSend) return;
+    if (!_msgService.canSend) {
+      DeviceLog.warn('queryDeviceInfo skipped: serial disconnected');
+      return;
+    }
     final id = _msgService.nextId();
     await _msgService.send(DeviceMessage.request(
       messageId: id,
@@ -53,7 +66,10 @@ class DeviceInfoNotifier extends StateNotifier<DeviceState> {
   /// 主动切换后，下位机通常会通过 device_info 上报新的 light_status
   /// 覆盖本地状态。
   Future<bool> toggleLight() async {
-    if (!_msgService.canSend) return false;
+    if (!_msgService.canSend) {
+      DeviceLog.warn('toggleLight skipped: serial disconnected');
+      return false;
+    }
     final next = state.lightStatus == DeviceLightStatus.on ? 'off' : 'on';
     final id = _msgService.nextId();
     final ok = await _msgService.send(DeviceMessage.request(
@@ -67,13 +83,17 @@ class DeviceInfoNotifier extends StateNotifier<DeviceState> {
       state = state.copyWith(
         lightStatus: next == 'on' ? DeviceLightStatus.on : DeviceLightStatus.off,
       );
+      DeviceLog.info('toggleLight optimistic: -> $next');
     }
     return ok;
   }
 
   /// 显式设定灯光
   Future<bool> setLight(bool on) async {
-    if (!_msgService.canSend) return false;
+    if (!_msgService.canSend) {
+      DeviceLog.warn('setLight skipped: serial disconnected');
+      return false;
+    }
     if (on && state.lightStatus == DeviceLightStatus.on) return true;
     if (!on && state.lightStatus == DeviceLightStatus.off) return true;
     final id = _msgService.nextId();
@@ -87,6 +107,7 @@ class DeviceInfoNotifier extends StateNotifier<DeviceState> {
       state = state.copyWith(
         lightStatus: on ? DeviceLightStatus.on : DeviceLightStatus.off,
       );
+      DeviceLog.info('setLight optimistic: -> ${on ? "on" : "off"}');
     }
     return ok;
   }