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/pages/medication/medication_checkin_page.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import '../../core/app_colors.dart';
+import '../../core/app_module_visuals.dart';
 import '../../core/app_theme.dart';
 import '../../core/navigation_provider.dart';
 import '../../providers/auth_provider.dart';
@@ -21,8 +22,7 @@ class MedicationCheckInPage extends ConsumerStatefulWidget {
 }
 
 class _MedicationCheckInPageState extends ConsumerState<MedicationCheckInPage> {
-  static const _medBlue = Color(0xFF60A5FA);
-  static const _medViolet = Color(0xFF8B5CF6);
+  static const _visual = AppModuleVisuals.medication;
   static const _softGreen = Color(0xFFEAF8EF);
 
   Future<List<Map<String, dynamic>>>? _future;
@@ -67,11 +67,7 @@ class _MedicationCheckInPageState extends ConsumerState<MedicationCheckInPage> {
     } catch (e) {
       debugPrint('[MedCheckIn] 打卡失败: $e');
       if (mounted) {
-        AppToast.show(
-          context,
-          '打卡失败，请稍后重试',
-          type: AppToastType.error,
-        );
+        AppToast.show(context, '打卡失败，请稍后重试', type: AppToastType.error);
       }
     } finally {
       if (mounted) setState(() => _busyDoses.remove(doseKey));
@@ -212,14 +208,7 @@ class _CheckInSummary extends StatelessWidget {
                 width: 42,
                 height: 42,
                 decoration: BoxDecoration(
-                  gradient: const LinearGradient(
-                    begin: Alignment.topLeft,
-                    end: Alignment.bottomRight,
-                    colors: [
-                      _MedicationCheckInPageState._medBlue,
-                      _MedicationCheckInPageState._medViolet,
-                    ],
-                  ),
+                  gradient: _MedicationCheckInPageState._visual.gradient,
                   borderRadius: BorderRadius.circular(14),
                 ),
                 child: const Icon(
@@ -254,10 +243,10 @@ class _CheckInSummary extends StatelessWidget {
               ),
               Text(
                 '${(progress * 100).round()}%',
-                style: const TextStyle(
+                style: TextStyle(
                   fontSize: 22,
                   fontWeight: FontWeight.w900,
-                  color: _MedicationCheckInPageState._medViolet,
+                  color: _MedicationCheckInPageState._visual.color,
                 ),
               ),
             ],
@@ -269,8 +258,8 @@ class _CheckInSummary extends StatelessWidget {
               minHeight: 9,
               value: progress,
               backgroundColor: AppColors.cardInner,
-              valueColor: const AlwaysStoppedAnimation<Color>(
-                _MedicationCheckInPageState._medBlue,
+              valueColor: AlwaysStoppedAnimation<Color>(
+                _MedicationCheckInPageState._visual.color,
               ),
             ),
           ),
@@ -300,7 +289,7 @@ class _CheckInSummary extends StatelessWidget {
                   label: '总次数',
                   value: '$total',
                   icon: Icons.format_list_numbered_outlined,
-                  color: _MedicationCheckInPageState._medViolet,
+                  color: _MedicationCheckInPageState._visual.color,
                 ),
               ),
             ],
@@ -415,7 +404,7 @@ class _MedicationDoseCard extends StatelessWidget {
                 decoration: BoxDecoration(
                   color: allTaken
                       ? _MedicationCheckInPageState._softGreen
-                      : AppColors.infoLight,
+                      : _MedicationCheckInPageState._visual.lightColor,
                   borderRadius: BorderRadius.circular(14),
                   border: Border.all(color: AppColors.borderLight),
                 ),
@@ -423,7 +412,7 @@ class _MedicationDoseCard extends StatelessWidget {
                   allTaken ? Icons.done_all_rounded : Icons.medication_liquid,
                   color: allTaken
                       ? AppTheme.success
-                      : _MedicationCheckInPageState._medBlue,
+                      : _MedicationCheckInPageState._visual.color,
                   size: 24,
                 ),
               ),
@@ -613,7 +602,7 @@ class _DoseRow extends StatelessWidget {
                         style: FilledButton.styleFrom(
                           backgroundColor: isTaken
                               ? Colors.white
-                              : _MedicationCheckInPageState._medBlue,
+                              : _MedicationCheckInPageState._visual.color,
                           foregroundColor: isTaken
                               ? AppTheme.success
                               : Colors.white,