feat: 通知推送/免打扰偏好 + 饮食记录侧滑删除修复 + 聊天交互优化

- 通知: 新增推送开关/免打扰时段偏好持久化 + EF 迁移; 通知管线支持免打扰过滤
- 饮食: 侧滑删除 confirmDismiss 按方向放行(修复删不掉); 新增 diet_nutrition_widgets; 饮食录入页重构
- 聊天: 智能体胶囊点击锁防误触; 流式状态 select 优化; 卡片入场动画
- 主页: 消息列表提取 _HomeMessages + 侧滑手势打开抽屉
- 其他: api_client IP 适配; 通知/用药/饮食端点微调; 测试更新

health_app/lib/pages/home/home_page.dart

@@ -30,7 +30,6 @@ class _HomePageState extends ConsumerState<HomePage>
   final _scaffoldKey = GlobalKey<ScaffoldState>();
   double? _drawerDragStartX;
   String? _pickedImagePath;
-  int _lastMsgCount = 0;
   Timer? _notificationTimer;
 
   @override
@@ -53,16 +52,6 @@ class _HomePageState extends ConsumerState<HomePage>
     }
   }
 
-  @override
-  void didChangeMetrics() {
-    // 键盘动画期间每帧都会回调，让列表底部始终贴住输入区上沿
-    if (!_focusNode.hasFocus) return;
-    WidgetsBinding.instance.addPostFrameCallback((_) {
-      if (!mounted || !_scrollCtrl.hasClients) return;
-      _scrollCtrl.jumpTo(_scrollCtrl.position.maxScrollExtent);
-    });
-  }
-
   @override
   void dispose() {
     WidgetsBinding.instance.removeObserver(this);
@@ -89,7 +78,6 @@ class _HomePageState extends ConsumerState<HomePage>
 
   @override
   Widget build(BuildContext context) {
-    final chatState = ref.watch(chatProvider);
     final auth = ref.watch(authProvider);
     final user = auth.user;
 
@@ -112,15 +100,17 @@ class _HomePageState extends ConsumerState<HomePage>
       }
     });
 
-    final currentCount = chatState.messages.length;
-    if (currentCount > _lastMsgCount) {
+    ref.listen<int>(chatProvider.select((state) => state.messages.length), (
+      previous,
+      current,
+    ) {
+      if (current <= (previous ?? 0)) return;
       WidgetsBinding.instance.addPostFrameCallback((_) {
-        if (_scrollCtrl.hasClients) {
+        if (mounted && _scrollCtrl.hasClients) {
           _scrollCtrl.jumpTo(_scrollCtrl.position.maxScrollExtent);
         }
       });
-    }
-    _lastMsgCount = currentCount;
+    });
 
     return Scaffold(
       key: _scaffoldKey,
@@ -136,10 +126,7 @@ class _HomePageState extends ConsumerState<HomePage>
               child: Stack(
                 children: [
                   RepaintBoundary(
-                    child: ChatMessagesView(
-                      scrollCtrl: _scrollCtrl,
-                      messages: chatState.messages,
-                    ),
+                    child: _HomeMessages(scrollCtrl: _scrollCtrl),
                   ),
                   Positioned(
                     left: 0,
@@ -592,6 +579,18 @@ class _HomePageState extends ConsumerState<HomePage>
   }
 }
 
+class _HomeMessages extends ConsumerWidget {
+  final ScrollController scrollCtrl;
+
+  const _HomeMessages({required this.scrollCtrl});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final messages = ref.watch(chatProvider.select((state) => state.messages));
+    return ChatMessagesView(scrollCtrl: scrollCtrl, messages: messages);
+  }
+}
+
 class _HeaderIconButton extends StatelessWidget {
   final IconData icon;
   final VoidCallback onTap;