feat: 饮食记录逻辑重构 + 通知管理分隔线修复 + 多页面 UI 调整

- 饮食: 新增 DietCommentaryPolicy + diet_record_logic, 饮食记录逻辑抽取复用
- 通知管理: 分隔线改为仿通知中心样式, 跳过图标区域只留文字下方
- 侧边栏: 对话记录操作栏浮层修复 + 常用功能间距收紧
- 智能体: 欢迎卡片去 400ms 延迟 + 胶囊去阴影
- 后端: AI 会话仓库新增方法 + 饮食评论策略 + 健康记录规则调整
- 其他: api_client IP 适配 + 多页面 UI 微调 + 新增测试

health_app/lib/core/api_client.dart

@@ -6,7 +6,7 @@ import 'local_database.dart';
 /// API 基础地址。可通过 --dart-define=API_BASE_URL=http://host:5000 覆盖。
 const String baseUrl = String.fromEnvironment(
   'API_BASE_URL',
-  defaultValue: 'http://10.4.221.78:5000',
+  defaultValue: 'http://10.4.251.10:5000',
 );
 
 class ApiException implements Exception {

health_app/lib/core/app_colors.dart

@@ -20,30 +20,30 @@ class AppColors {
   static const Color meadowAccent = Color(0xFFBAE6FD);
   static const Color sageAccent = Color(0xFFE9D5FF);
 
-  static const Color health = Color(0xFF3B82F6);
-  static const Color healthLight = Color(0xFFEFF6FF);
-  static const Color healthBorder = Color(0xFFBFDBFE);
-  static const Color medication = Color(0xFF8B5CF6);
-  static const Color medicationLight = Color(0xFFF5F3FF);
-  static const Color medicationBorder = Color(0xFFDDD6FE);
-  static const Color exercise = Color(0xFF10B981);
-  static const Color exerciseLight = Color(0xFFECFDF5);
-  static const Color exerciseBorder = Color(0xFFA7F3D0);
-  static const Color report = Color(0xFF2563EB);
-  static const Color reportLight = Color(0xFFEEF2FF);
-  static const Color reportBorder = Color(0xFFC7D2FE);
-  static const Color diet = Color(0xFFF97316);
-  static const Color dietLight = Color(0xFFFFF7ED);
-  static const Color dietBorder = Color(0xFFFED7AA);
-  static const Color device = Color(0xFF06B6D4);
-  static const Color deviceLight = Color(0xFFECFEFF);
-  static const Color deviceBorder = Color(0xFFA5F3FC);
+  static const Color health = Color(0xFF34D399);
+  static const Color healthLight = Color(0xFFF0FDF7);
+  static const Color healthBorder = Color(0xFFC8F7E1);
+  static const Color medication = Color(0xFF00B8D9);
+  static const Color medicationLight = Color(0xFFEAFBFF);
+  static const Color medicationBorder = Color(0xFFB8F0FA);
+  static const Color exercise = Color(0xFF8EC5FC);
+  static const Color exerciseLight = Color(0xFFF5F0FF);
+  static const Color exerciseBorder = Color(0xFFDCCBFE);
+  static const Color report = Color(0xFF6366F1);
+  static const Color reportLight = Color(0xFFEFFBFF);
+  static const Color reportBorder = Color(0xFFBAE6FD);
+  static const Color diet = Color(0xFFF7971E);
+  static const Color dietLight = Color(0xFFFFF8DB);
+  static const Color dietBorder = Color(0xFFFFE58A);
+  static const Color device = Color(0xFF2563EB);
+  static const Color deviceLight = Color(0xFFEFF6FF);
+  static const Color deviceBorder = Color(0xFFBFDBFE);
   static const Color notification = Color(0xFF7C5CFF);
   static const Color notificationLight = Color(0xFFF5F3FF);
   static const Color notificationBorder = Color(0xFFDDD6FE);
-  static const Color doctor = Color(0xFF0F766E);
-  static const Color doctorLight = Color(0xFFF0FDFA);
-  static const Color doctorBorder = Color(0xFF99F6E4);
+  static const Color doctor = Color(0xFFFFAFBD);
+  static const Color doctorLight = Color(0xFFFFF3EF);
+  static const Color doctorBorder = Color(0xFFFFD7CB);
   static const Color calendar = Color(0xFF6366F1);
   static const Color calendarLight = Color(0xFFEEF2FF);
   static const Color calendarBorder = Color(0xFFC7D2FE);
@@ -157,45 +157,45 @@ class AppColors {
   );
 
   static const LinearGradient doctorGradient = LinearGradient(
-    begin: Alignment.topLeft,
-    end: Alignment.bottomRight,
-    colors: [Color(0xFF60A5FA), Color(0xFF8B5CF6)],
+    begin: Alignment.centerLeft,
+    end: Alignment.centerRight,
+    colors: [Color(0xFFFFC3A0), Color(0xFFFFAFBD)],
   );
 
   static const LinearGradient healthGradient = LinearGradient(
-    begin: Alignment.topLeft,
-    end: Alignment.bottomRight,
-    colors: [Color(0xFF60A5FA), Color(0xFF2563EB)],
+    begin: Alignment.centerLeft,
+    end: Alignment.centerRight,
+    colors: [Color(0xFF6EE7B7), Color(0xFF67E8F9)],
   );
 
   static const LinearGradient medicationGradient = LinearGradient(
     begin: Alignment.topLeft,
     end: Alignment.bottomRight,
-    colors: [Color(0xFFA78BFA), Color(0xFF7C3AED)],
+    colors: [Color(0xFF4FACFE), Color(0xFF00F2FE)],
   );
 
   static const LinearGradient exerciseGradient = LinearGradient(
     begin: Alignment.topLeft,
     end: Alignment.bottomRight,
-    colors: [Color(0xFF34D399), Color(0xFF059669)],
+    colors: [Color(0xFFE0C3FC), Color(0xFF8EC5FC)],
   );
 
   static const LinearGradient reportGradient = LinearGradient(
     begin: Alignment.topLeft,
     end: Alignment.bottomRight,
-    colors: [Color(0xFF60A5FA), Color(0xFF2563EB)],
+    colors: [Color(0xFF38BDF8), Color(0xFF818CF8)],
   );
 
   static const LinearGradient dietGradient = LinearGradient(
     begin: Alignment.topLeft,
     end: Alignment.bottomRight,
-    colors: [Color(0xFFFB923C), Color(0xFFF97316)],
+    colors: [Color(0xFFF7971E), Color(0xFFFFD200)],
   );
 
   static const LinearGradient deviceGradient = LinearGradient(
     begin: Alignment.topLeft,
     end: Alignment.bottomRight,
-    colors: [Color(0xFF22D3EE), Color(0xFF0891B2)],
+    colors: [Color(0xFF60A5FA), Color(0xFF2563EB)],
   );
 
   static const LinearGradient notificationGradient = LinearGradient(

health_app/lib/core/navigation_provider.dart

@@ -32,7 +32,9 @@ class RouteStackNotifier extends Notifier<List<RouteInfo>> {
 
 /// 路由栈 Provider
 final routeStackProvider =
-    NotifierProvider<RouteStackNotifier, List<RouteInfo>>(RouteStackNotifier.new);
+    NotifierProvider<RouteStackNotifier, List<RouteInfo>>(
+      RouteStackNotifier.new,
+    );
 
 /// 当前路由
 final currentRouteProvider = Provider<RouteInfo>((ref) {
@@ -46,13 +48,21 @@ void _dismissKeyboard() {
 }
 
 /// 跳转（替换整个栈）
-void goRoute(WidgetRef ref, String name, {Map<String, String> params = const {}}) {
+void goRoute(
+  WidgetRef ref,
+  String name, {
+  Map<String, String> params = const {},
+}) {
   _dismissKeyboard();
   ref.read(routeStackProvider.notifier).replace(name, params: params);
 }
 
 /// 推入新页面
-void pushRoute(WidgetRef ref, String name, {Map<String, String> params = const {}}) {
+void pushRoute(
+  WidgetRef ref,
+  String name, {
+  Map<String, String> params = const {},
+}) {
   _dismissKeyboard();
   ref.read(routeStackProvider.notifier).push(name, params: params);
 }