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/report/ai_analysis_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';
@@ -74,8 +75,8 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
   Widget _buildHeader(ReportAnalysis analysis) {
     return Container(
       width: double.infinity, padding: const EdgeInsets.all(16),
-      decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(16),
-        boxShadow: [BoxShadow(color: AppTheme.primary.withAlpha(10), blurRadius: 8)]),
+      decoration: BoxDecoration(color: AppTheme.surface, borderRadius: BorderRadius.circular(AppTheme.rLg),
+        boxShadow: [AppTheme.shadowCard]),
       child: Row(children: [
         Container(width: 48, height: 48, decoration: BoxDecoration(color: AppTheme.primaryLight, borderRadius: BorderRadius.circular(12)),
           child: const Icon(Icons.auto_awesome, size: 28, color: AppTheme.primary)),
@@ -83,7 +84,7 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
         Expanded(child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
           Text(analysis.reportType, style: const TextStyle(fontSize: 21, fontWeight: FontWeight.w700)),
           const SizedBox(height: 4),
-          const Text('AI 预解读结果 · 待医生确认', style: TextStyle(fontSize: 16, color: Color(0xFF999999))),
+          const Text('AI 预解读结果 · 待医生确认', style: TextStyle(fontSize: 16, color: AppColors.textSecondary)),
         ])),
       ]),
     );
@@ -94,16 +95,16 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
     return Container(
       width: double.infinity, padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
       decoration: BoxDecoration(
-        color: isReviewed ? const Color(0xFFDCFCE7) : const Color(0xFFFFF3E0),
+        color: isReviewed ? AppColors.successLight : AppColors.warningLight,
         borderRadius: BorderRadius.circular(10),
       ),
       child: Row(mainAxisSize: MainAxisSize.min, children: [
         Icon(isReviewed ? Icons.check_circle : Icons.hourglass_empty, size: 21,
-          color: isReviewed ? AppTheme.success : const Color(0xFFF59E0B)),
+          color: isReviewed ? AppTheme.success : AppColors.warning),
         const SizedBox(width: 8),
         Text(isReviewed ? '已通过医生审核' : '等待医生审核中',
           style: TextStyle(fontSize: 17, fontWeight: FontWeight.w500,
-            color: isReviewed ? AppTheme.success : const Color(0xFFF59E0B))),
+            color: isReviewed ? AppTheme.success : AppColors.warning)),
       ]),
     );
   }
@@ -111,7 +112,7 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
   Widget _buildIndicators(ReportAnalysis analysis) {
     return Container(
       width: double.infinity,
-      decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(16)),
+      decoration: BoxDecoration(color: AppTheme.surface, borderRadius: BorderRadius.circular(AppTheme.rLg)),
       child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
         const Padding(
           padding: EdgeInsets.fromLTRB(16, 16, 16, 8),
@@ -128,19 +129,19 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
     final IconData icon;
     switch (ind.status) {
       case 'high': color = AppTheme.error; icon = Icons.arrow_upward; break;
-      case 'low': color = const Color(0xFFF9A825); icon = Icons.arrow_downward; break;
+      case 'low': color = AppColors.warning; icon = Icons.arrow_downward; break;
       default: color = AppTheme.success; icon = Icons.check_circle;
     }
     return Container(
       margin: const EdgeInsets.symmetric(horizontal: 16),
       padding: const EdgeInsets.symmetric(vertical: 12),
-      decoration: const BoxDecoration(border: Border(bottom: BorderSide(color: Color(0xFFF0F0F0)))),
+      decoration: BoxDecoration(border: Border(bottom: BorderSide(color: AppColors.border))),
       child: Row(children: [
         Expanded(
           child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
             Text(ind.name, style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w500)),
             if (ind.referenceRange != null && ind.referenceRange!.isNotEmpty)
-              Text('参考值: ${ind.referenceRange}', style: const TextStyle(fontSize: 15, color: Color(0xFF999999))),
+              Text('参考值: ${ind.referenceRange}', style: TextStyle(fontSize: 15, color: AppColors.textHint)),
           ]),
         ),
         Column(crossAxisAlignment: CrossAxisAlignment.end, children: [
@@ -155,23 +156,23 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
   Widget _buildSummary(ReportAnalysis analysis) {
     return Container(
       width: double.infinity, padding: const EdgeInsets.all(16),
-      decoration: BoxDecoration(color: const Color(0xFFFEFCE8), borderRadius: BorderRadius.circular(16),
-        border: Border.all(color: const Color(0xFFFDE68A))),
+      decoration: BoxDecoration(color: AppColors.warningLight, borderRadius: BorderRadius.circular(AppTheme.rLg),
+        border: Border.all(color: AppColors.warning.withAlpha(80))),
       child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
-        const Row(children: [
-          Text('💡', style: TextStyle(fontSize: 21)),
-          SizedBox(width: 8),
-          Text('综合解读', style: TextStyle(fontSize: 19, fontWeight: FontWeight.w700, color: Color(0xFFD97706))),
+        Row(children: [
+          const Text('💡', style: TextStyle(fontSize: 21)),
+          const SizedBox(width: 8),
+          Text('综合解读', style: TextStyle(fontSize: 19, fontWeight: FontWeight.w700, color: AppColors.warning)),
         ]),
         const SizedBox(height: 10),
         Text(analysis.summary.isNotEmpty ? analysis.summary : '暂无 AI 解读结果',
-          style: const TextStyle(fontSize: 17, color: Color(0xFF92400E), height: 1.6)),
+          style: TextStyle(fontSize: 17, color: AppColors.warning, height: 1.6)),
         const SizedBox(height: 10),
         Container(
           width: double.infinity, padding: const EdgeInsets.all(10),
-          decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(10)),
-          child: const Text('⚠️ AI 解读仅供参考，请以医生诊断为准',
-            style: TextStyle(fontSize: 15, color: Color(0xFFD97706))),
+          decoration: BoxDecoration(color: AppTheme.surface, borderRadius: BorderRadius.circular(AppTheme.rSm)),
+          child: Text('⚠️ AI 解读仅供参考，请以医生诊断为准',
+            style: TextStyle(fontSize: 15, color: AppColors.warning)),
         ),
       ]),
     );
@@ -180,22 +181,22 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
   Widget _buildDoctorReview(ReportItem report) {
     return Container(
       width: double.infinity, padding: const EdgeInsets.all(16),
-      decoration: BoxDecoration(color: const Color(0xFFDCFCE7), borderRadius: BorderRadius.circular(16),
-        border: Border.all(color: const Color(0xFF86EFAC))),
+      decoration: BoxDecoration(color: AppColors.successLight, borderRadius: BorderRadius.circular(AppTheme.rLg),
+        border: Border.all(color: AppColors.success.withAlpha(80))),
       child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
-        const Row(children: [
-          Text('✅', style: TextStyle(fontSize: 21)),
-          SizedBox(width: 8),
-          Text('医生审核意见', style: TextStyle(fontSize: 19, fontWeight: FontWeight.w700, color: Color(0xFF2E7D32))),
+        Row(children: [
+          const Text('✅', style: TextStyle(fontSize: 21)),
+          const SizedBox(width: 8),
+          Text('医生审核意见', style: TextStyle(fontSize: 19, fontWeight: FontWeight.w700, color: AppColors.success)),
         ]),
         if (report.doctorName != null) ...[
           const SizedBox(height: 4),
-          Text('审核医生：${report.doctorName}', style: const TextStyle(fontSize: 16, color: Color(0xFF4CAF50))),
+          Text('审核医生：${report.doctorName}', style: TextStyle(fontSize: 16, color: AppColors.success)),
         ],
         if (report.reviewedAt != null) ...[
           const SizedBox(height: 2),
           Text('审核时间：${report.reviewedAt!.toLocal().toString().substring(0, 16)}',
-            style: const TextStyle(fontSize: 15, color: Color(0xFF81C784))),
+            style: TextStyle(fontSize: 15, color: AppColors.success.withAlpha(180))),
         ],
         if (report.severity != null) ...[
           const SizedBox(height: 8),
@@ -205,18 +206,18 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
           const SizedBox(height: 10),
           Container(
             width: double.infinity, padding: const EdgeInsets.all(12),
-            decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(10)),
+            decoration: BoxDecoration(color: AppTheme.surface, borderRadius: BorderRadius.circular(AppTheme.rSm)),
             child: Text('💬 ${report.doctorComment!}',
-              style: const TextStyle(fontSize: 18, color: Color(0xFF1A1A1A), height: 1.5)),
+              style: TextStyle(fontSize: 18, color: AppColors.textPrimary, height: 1.5)),
           ),
         ],
         if (report.doctorRecommendation != null && report.doctorRecommendation!.isNotEmpty) ...[
           const SizedBox(height: 8),
           Container(
             width: double.infinity, padding: const EdgeInsets.all(12),
-            decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(10)),
+            decoration: BoxDecoration(color: AppTheme.surface, borderRadius: BorderRadius.circular(AppTheme.rSm)),
             child: Text('📝 ${report.doctorRecommendation!}',
-              style: const TextStyle(fontSize: 17, color: Color(0xFF333333), height: 1.5)),
+              style: TextStyle(fontSize: 17, color: AppColors.textPrimary, height: 1.5)),
           ),
         ],
       ]),
@@ -225,11 +226,11 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
 
   Widget _severityBadge(String severity) {
     final (label, color, bg) = switch (severity) {
-      'Normal' => ('🟢 正常', AppTheme.success, const Color(0xFFDCFCE7)),
-      'Abnormal' => ('🟡 轻度异常', const Color(0xFFF59E0B), const Color(0xFFFFF3E0)),
-      'Severe' => ('🟠 中度异常', const Color(0xFFFF7043), const Color(0xFFFEE2E2)),
-      'Critical' => ('🔴 重度异常', const Color(0xFFDC2626), const Color(0xFFFEE2E2)),
-      _ => (severity, Colors.grey, Colors.grey.withAlpha(30)),
+      'Normal' => ('🟢 正常', AppTheme.success, AppColors.successLight),
+      'Abnormal' => ('🟡 轻度异常', AppColors.warning, AppColors.warningLight),
+      'Severe' => ('🟠 中度异常', AppColors.error, AppColors.errorLight),
+      'Critical' => ('🔴 重度异常', AppColors.error, AppColors.errorLight),
+      _ => (severity, AppColors.textHint, AppColors.borderLight),
     };
     return Container(
       padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),