fix: 任务卡片移入对话流 + 综合信息卡片分组修复

- 新增 taskCard 消息类型，作为对话第一条消息
- 今日任务卡片从独立区域移至聊天流内
- AgentWelcomeCard 从 metadata 读 agent 不再全局共享
- 切换胶囊不会影响已发过的卡片

health_app/lib/pages/home/widgets/chat_messages_view.dart

@@ -63,7 +63,10 @@ class ChatMessagesView extends ConsumerWidget {
 
     switch (msg.type) {
       case MessageType.agentWelcome:
-        return _buildAgentWelcomeCard(context, ref, msg, chatState.activeAgent);
+        final storedAgent = _parseAgentFromName(msg.metadata?['agent'] as String?);
+        return _buildAgentWelcomeCard(context, ref, msg, storedAgent);
+      case MessageType.taskCard:
+        return _buildTaskCardInChat(context, ref);
       case MessageType.dataConfirm:
         return _buildDataConfirmCard(context, msg);
       case MessageType.medicationConfirm:
@@ -1254,4 +1257,69 @@ class _ExpandableAdviceState extends State<_ExpandableAdvice> {
       ),
     );
   }
+
+  static ActiveAgent _parseAgentFromName(String? name) {
+    switch (name) {
+      case 'consultation': return ActiveAgent.consultation;
+      case 'health': return ActiveAgent.health;
+      case 'diet': return ActiveAgent.diet;
+      case 'medication': return ActiveAgent.medication;
+      case 'report': return ActiveAgent.report;
+      case 'exercise': return ActiveAgent.exercise;
+      default: return ActiveAgent.default_;
+    }
+  }
+
+  Widget _buildTaskCardInChat(BuildContext context, WidgetRef ref) {
+    final health = ref.watch(latestHealthProvider);
+    return health.when(
+      data: (data) => _taskCardBubble(context, ref, data),
+      loading: () => _taskCardBubble(context, ref, {}),
+      error: (_, __) => _taskCardBubble(context, ref, {}),
+    );
+  }
+
+  Widget _taskCardBubble(BuildContext context, WidgetRef ref, Map<String, dynamic> data) {
+    final bp = data['BloodPressure'];
+    final bpText = bp is Map ? '${bp['systolic'] ?? '--'}/${bp['diastolic'] ?? '--'}' : '--';
+    final hr = data['HeartRate'];
+    final hrText = hr is Map && hr['value'] != null ? '${hr['value']}' : '--';
+    final gl = data['Glucose'];
+    final glText = gl is Map && gl['value'] != null ? '${gl['value']}' : '--';
+    final sp = data['SpO2'];
+    final spText = sp is Map && sp['value'] != null ? '${sp['value']}' : '--';
+
+    return Container(
+      margin: const EdgeInsets.only(bottom: 12),
+      padding: const EdgeInsets.all(14),
+      decoration: BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.circular(16),
+        boxShadow: [BoxShadow(color: const Color(0xFF635BFF).withAlpha(10), blurRadius: 8, offset: const Offset(0, 2))],
+      ),
+      child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
+        Row(children: [
+          Icon(Icons.today, size: 18, color: const Color(0xFF635BFF)),
+          const SizedBox(width: 8),
+          const Text('今日任务', style: TextStyle(fontSize: 15, fontWeight: FontWeight.w600, color: Color(0xFF1A1A1A))),
+        ]),
+        const SizedBox(height: 10),
+        Row(mainAxisAlignment: MainAxisAlignment.spaceAround, children: [
+          _miniMetric('血压', bpText, Icons.favorite, ref),
+          _miniMetric('心率', hrText, Icons.monitor_heart, ref),
+          _miniMetric('血糖', glText, Icons.bloodtype, ref),
+          _miniMetric('血氧', spText, Icons.air, ref),
+        ]),
+      ]),
+    );
+  }
+
+  Widget _miniMetric(String label, String value, IconData icon, WidgetRef ref) {
+    return Column(children: [
+      Icon(icon, size: 20, color: const Color(0xFF635BFF)),
+      const SizedBox(height: 4),
+      Text(value, style: const TextStyle(fontSize: 14, fontWeight: FontWeight.bold, color: Color(0xFF1A1A1A))),
+      Text(label, style: const TextStyle(fontSize: 10, color: Color(0xFF999999))),
+    ]);
+  }
 }