feat: UI全面改造 + 后端多项修复

【后端修复】
- 删除diet/consultation agent假工具声明
- 修复DayOfWeek实体注释
- 修复Vision API content序列化
- cleanup_service级联删除修复
- 用药提醒时区偏差修复
- 统一DateTime处理(UtcNow+8)
- 新增UTC DateTime JSON转换器

【前端UI重构】
- 配色体系全面更新(#8B5CF6淡紫+#F0ECFF背景)
- 登录页重设计
- 首页重设计(透明顶栏、渐变背景、胶囊输入区)
- 聊天卡片加白蓝边框、渐变标题
- 侧边栏重构(渐变背景、合并顶部、删除底部设置)
- 确认卡片可编辑字段恢复
- 所有子页面加返回按钮
- catch异常加日志
- 删除后refresh provider缓存

health_app/lib/pages/settings/notification_prefs_page.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import '../../core/app_colors.dart';
 import '../../core/app_theme.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../core/navigation_provider.dart';
@@ -55,10 +56,10 @@ class NotificationPrefsPage extends ConsumerWidget {
         backgroundColor: Colors.transparent,
         elevation: 0,
         leading: IconButton(
-          icon: const Icon(Icons.arrow_back_ios_new, color: Color(0xFF1A1A1A)),
+          icon: const Icon(Icons.arrow_back_ios_new, color: AppColors.textPrimary),
           onPressed: () => popRoute(ref),
         ),
-        title: const Text('消息通知', style: TextStyle(fontSize: 21, fontWeight: FontWeight.w600, color: Color(0xFF1A1A1A))),
+        title: Text('消息通知', style: TextStyle(fontSize: 21, fontWeight: FontWeight.w600, color: AppColors.textPrimary)),
         centerTitle: true,
       ),
       body: SingleChildScrollView(
@@ -80,8 +81,8 @@ class NotificationPrefsPage extends ConsumerWidget {
             _SectionTitle(title: '通知类型'),
             _SwitchTile(
               icon: Icons.medication_rounded,
-              iconBg: const Color(0xFFFFF3E0),
-              iconColor: const Color(0xFFFF9800),
+              iconBg: AppColors.errorLight,
+              iconColor: AppColors.error,
               title: '用药提醒',
               subtitle: '服药时间到达时提醒您',
               value: prefs['medication'] ?? true,
@@ -89,7 +90,7 @@ class NotificationPrefsPage extends ConsumerWidget {
             ),
             _SwitchTile(
               icon: Icons.warning_amber_rounded,
-              iconBg: const Color(0xFFFFEBEE),
+              iconBg: AppColors.errorLight,
               iconColor: AppTheme.error,
               title: '健康异常提醒',
               subtitle: '检测到数据异常时及时通知',
@@ -98,8 +99,8 @@ class NotificationPrefsPage extends ConsumerWidget {
             ),
             _SwitchTile(
               icon: Icons.event_available_rounded,
-              iconBg: const Color(0xFFE8F5E9),
-              iconColor: const Color(0xFF4CAF50),
+              iconBg: AppColors.successLight,
+              iconColor: AppColors.success,
               title: '复查日期提醒',
               subtitle: '复查日前一天提醒您预约',
               value: prefs['followUp'] ?? true,
@@ -107,7 +108,7 @@ class NotificationPrefsPage extends ConsumerWidget {
             ),
             _SwitchTile(
               icon: Icons.smart_toy_outlined,
-              iconBg: const Color(0xFFF3E5F5),
+              iconBg: AppColors.iconBg,
               iconColor: AppTheme.primary,
               title: 'AI 回复通知',
               subtitle: 'AI 助手回复时发送通知',
@@ -128,13 +129,13 @@ class NotificationPrefsPage extends ConsumerWidget {
               Container(
                 margin: const EdgeInsets.symmetric(horizontal: 4),
                 padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
-                decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(12)),
+                decoration: BoxDecoration(color: AppTheme.surface, borderRadius: BorderRadius.circular(AppTheme.rMd)),
                 child: Row(children: [
                   Expanded(child: _TimeButton(label: '开始', time: '22:00', onTap: () async {
                     final picked = await showTimePicker(context: context, initialTime: const TimeOfDay(hour: 22, minute: 0));
                     if (picked != null && context.mounted) ref.read(notificationPrefsProvider.notifier).setDndStart(picked);
                   })),
-                  Padding(padding: const EdgeInsets.symmetric(horizontal: 12), child: Text('~', style: TextStyle(fontSize: 19, color: Colors.grey[400]))),
+                  Padding(padding: const EdgeInsets.symmetric(horizontal: 12), child: Text('~', style: TextStyle(fontSize: 19, color: AppTheme.textHint))),
                   Expanded(child: _TimeButton(label: '结束', time: '08:00', onTap: () async {
                     final picked = await showTimePicker(context: context, initialTime: const TimeOfDay(hour: 8, minute: 0));
                     if (picked != null && context.mounted) ref.read(notificationPrefsProvider.notifier).setDndEnd(picked);
@@ -158,7 +159,7 @@ class _SectionTitle extends StatelessWidget {
   const _SectionTitle({required this.title});
   @override
   Widget build(BuildContext context) {
-    return Padding(padding: const EdgeInsets.only(left: 4, bottom: 10), child: Text(title, style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w600, color: Color(0xFF999999))));
+    return Padding(padding: const EdgeInsets.only(left: 4, bottom: 10), child: Text(title, style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w600, color: AppColors.textSecondary)));
   }
 }
 
@@ -184,17 +185,17 @@ class _SwitchTile extends StatelessWidget {
     return Container(
       margin: const EdgeInsets.symmetric(horizontal: 4, vertical: 3),
       padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 12),
-      decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(12)),
+      decoration: BoxDecoration(color: AppTheme.surface, borderRadius: BorderRadius.circular(AppTheme.rMd)),
       child: Row(children: [
         if (icon != null) ...[
           Container(width: 38, height: 38, decoration: BoxDecoration(color: iconBg, borderRadius: BorderRadius.circular(10)), child: Icon(icon, size: 23, color: iconColor)),
           const SizedBox(width: 12),
         ],
         Expanded(child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
-          Text(title, style: const TextStyle(fontSize: 18, color: Color(0xFF1A1A1A), fontWeight: FontWeight.w500)),
-          if (subtitle != null && subtitle!.isNotEmpty) Text(subtitle!, style: TextStyle(fontSize: 15, color: Colors.grey[500])),
+          Text(title, style: const TextStyle(fontSize: 18, color: AppColors.textPrimary, fontWeight: FontWeight.w500)),
+          if (subtitle != null && subtitle!.isNotEmpty) Text(subtitle!, style: TextStyle(fontSize: 15, color: AppTheme.textSub)),
         ])),
-        Switch(value: value, onChanged: onChanged, activeThumbColor: AppTheme.primary, activeTrackColor: const Color(0xFFC5BFFF)),
+        Switch(value: value, onChanged: onChanged, activeThumbColor: AppTheme.primary, activeTrackColor: AppColors.primaryLight),
       ]),
     );
   }
@@ -210,8 +211,8 @@ class _TimeButton extends StatelessWidget {
   Widget build(BuildContext context) {
     return GestureDetector(onTap: onTap, child: Container(
       padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
-      decoration: BoxDecoration(border: Border.all(color: const Color(0xFFE0E0E0)), borderRadius: BorderRadius.circular(10)),
-      child: Column(children: [Text(label, style: TextStyle(fontSize: 14, color: Colors.grey[500])), Text(time, style: const TextStyle(fontSize: 19, fontWeight: FontWeight.w600, color: AppTheme.primary))]),
+      decoration: BoxDecoration(border: Border.all(color: AppColors.border), borderRadius: BorderRadius.circular(AppTheme.rSm)),
+      child: Column(children: [Text(label, style: TextStyle(fontSize: 14, color: AppTheme.textHint)), Text(time, style: const TextStyle(fontSize: 19, fontWeight: FontWeight.w600, color: AppTheme.primary))]),
     ));
   }
 }

health_app/lib/pages/settings/settings_pages.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:shadcn_ui/shadcn_ui.dart';
+import '../../core/app_colors.dart';
 import '../../core/app_theme.dart';
 import '../../core/navigation_provider.dart';
 import '../../providers/auth_provider.dart';
@@ -10,15 +11,12 @@ class SettingsPage extends ConsumerWidget {
   const SettingsPage({super.key});
 
   @override Widget build(BuildContext context, WidgetRef ref) {
-    final theme = ShadTheme.of(context);
-
     return Scaffold(
-      backgroundColor: theme.colorScheme.background,
+      backgroundColor: AppColors.background,
       appBar: AppBar(
-        backgroundColor: theme.colorScheme.card,
-        elevation: 0,
-        leading: IconButton(icon: Icon(LucideIcons.chevronLeft, color: theme.colorScheme.foreground), onPressed: () => popRoute(ref)),
-        title: Text('设置', style: TextStyle(fontSize: 21, fontWeight: FontWeight.w600, color: theme.colorScheme.foreground)),
+        backgroundColor: AppColors.cardBackground,
+        leading: IconButton(icon: const Icon(LucideIcons.chevronLeft, color: AppColors.textPrimary), onPressed: () => popRoute(ref)),
+        title: const Text('设置', style: TextStyle(fontSize: 21, fontWeight: FontWeight.w600, color: AppColors.textPrimary)),
         centerTitle: true,
       ),
       body: SafeArea(child: SingleChildScrollView(
@@ -26,10 +24,8 @@ class SettingsPage extends ConsumerWidget {
         child: Column(children: [
           const SizedBox(height: AppTheme.sMd),
           AppMenuItem(icon: LucideIcons.bell, title: '消息通知', onTap: () => pushRoute(ref, 'notificationPrefs')),
-          AppMenuItem(icon: LucideIcons.pill, title: '用药提醒', subtitle: 'mmHg / mmol/L', onTap: () => pushRoute(ref, 'medications')),
-          AppMenuItem(icon: LucideIcons.database, title: '数据导出', onTap: () {}),
-          AppMenuItem(icon: LucideIcons.type, title: '字体大小', trailing: 'v1.0.0', onTap: () {}),
-          AppMenuItem(icon: LucideIcons.sprayCan, title: '清除缓存', subtitle: '73.2 MB', onTap: () {}),
+          AppMenuItem(icon: LucideIcons.type, title: '字体大小', subtitle: '老年版', onTap: () {}),
+          AppMenuItem(icon: LucideIcons.sprayCan, title: '清除缓存', onTap: () {}),
           AppMenuItem(icon: LucideIcons.info, title: '关于健康管家', onTap: () => pushRoute(ref, 'staticText', params: {'type': 'about'})),
           AppMenuItem(icon: LucideIcons.shield, title: '隐私协议', onTap: () => pushRoute(ref, 'staticText', params: {'type': 'privacy'})),
           const SizedBox(height: 30),
@@ -40,10 +36,10 @@ class SettingsPage extends ConsumerWidget {
               height: 50,
               alignment: Alignment.center,
               decoration: BoxDecoration(
-                border: Border.all(color: theme.colorScheme.destructive.withAlpha(80)),
+                border: Border.all(color: AppColors.error.withAlpha(80)),
                 borderRadius: BorderRadius.circular(AppTheme.rPill),
               ),
-              child: Text('退出登录', style: TextStyle(fontSize: 19, color: theme.colorScheme.destructive, fontWeight: FontWeight.w500)),
+              child: const Text('退出登录', style: TextStyle(fontSize: 19, color: AppColors.error, fontWeight: FontWeight.w500)),
             ),
           ),
         ]),
@@ -52,16 +48,15 @@ class SettingsPage extends ConsumerWidget {
   }
 
   Future<void> _logout(BuildContext context, WidgetRef ref) async {
-    final theme = ShadTheme.of(context);
     final ok = await showDialog<bool>(
       context: context,
       builder: (ctx) => AlertDialog(
         shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(AppTheme.rXl)),
-        title: Text('退出登录', style: TextStyle(color: theme.colorScheme.foreground)),
-        content: Text('确定退出？', style: TextStyle(color: theme.colorScheme.mutedForeground)),
+        title: const Text('退出登录'),
+        content: const Text('确定退出？'),
         actions: [
-          TextButton(onPressed: () => Navigator.pop(ctx, false), child: Text('取消', style: TextStyle(color: theme.colorScheme.mutedForeground))),
-          TextButton(onPressed: () => Navigator.pop(ctx, true), child: Text('确定', style: TextStyle(color: theme.colorScheme.destructive))),
+          TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text('取消')),
+          TextButton(onPressed: () => Navigator.pop(ctx, true), child: const Text('确定', style: TextStyle(color: AppColors.error))),
         ],
       ),
     );