chore: 全面规范化代码，遵循 CLAUDE.md 编码规范

- C# 文件命名改为 snake_case（28 个文件重命名）
- C# 类转换为主构造函数（8 个类）
- 空 catch 添加异常类型（2 处）
- 新建 GlobalUsings.cs（Health.Infrastructure、Health.WebApi）
- Flutter 移除 go_router，改用 Riverpod 路由栈
- Flutter 移除 flutter_secure_storage，改用 sqflite 持久化
- 修复 Flutter 构建路径（Flutter SDK 迁至 D 盘）
- 后端端口改为 0.0.0.0:5000，支持局域网访问

health_app/lib/widgets/health_drawer.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:go_router/go_router.dart';
+import '../core/navigation_provider.dart';
 import '../providers/auth_provider.dart';
 import '../providers/data_providers.dart';
 
@@ -26,7 +26,7 @@ class HealthDrawer extends ConsumerWidget {
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: [
                   GestureDetector(
-                    onTap: () => context.push('/profile'),
+                    onTap: () => pushRoute(ref, 'profile'),
                     child: CircleAvatar(
                       radius: 28,
                       backgroundColor: const Color(0xFFEDEBFF),
@@ -40,7 +40,7 @@ class HealthDrawer extends ConsumerWidget {
                 ],
               ),
             ),
-            _DrawerItem(icon: Icons.settings, label: '设置', onTap: () => context.push('/settings')),
+            _DrawerItem(icon: Icons.settings, label: '设置', onTap: () => pushRoute(ref, 'settings')),
             const Divider(),
 
             // 健康概览——接真实数据
@@ -50,10 +50,10 @@ class HealthDrawer extends ConsumerWidget {
             ),
             latestHealth.when(
               data: (data) => Column(children: [
-                _HealthMetric(icon: Icons.favorite, label: '血压', value: _bpText(data['BloodPressure']), onTap: () => context.push('/trend/blood_pressure')),
-                _HealthMetric(icon: Icons.monitor_heart, label: '心率', value: _metricText(data['HeartRate'], '次/分'), onTap: () => context.push('/trend/heart_rate')),
-                _HealthMetric(icon: Icons.bloodtype, label: '血糖', value: _metricText(data['Glucose'], 'mmol/L'), onTap: () => context.push('/trend/glucose')),
-                _HealthMetric(icon: Icons.air, label: '血氧', value: _metricText(data['SpO2'], '%'), onTap: () => context.push('/trend/spo2')),
+                _HealthMetric(icon: Icons.favorite, label: '血压', value: _bpText(data['BloodPressure']), onTap: () => pushRoute(ref, 'trend', params: {'type': 'blood_pressure'})),
+                _HealthMetric(icon: Icons.monitor_heart, label: '心率', value: _metricText(data['HeartRate'], '次/分'), onTap: () => pushRoute(ref, 'trend', params: {'type': 'heart_rate'})),
+                _HealthMetric(icon: Icons.bloodtype, label: '血糖', value: _metricText(data['Glucose'], 'mmol/L'), onTap: () => pushRoute(ref, 'trend', params: {'type': 'glucose'})),
+                _HealthMetric(icon: Icons.air, label: '血氧', value: _metricText(data['SpO2'], '%'), onTap: () => pushRoute(ref, 'trend', params: {'type': 'spo2'})),
               ]),
               loading: () => const Padding(padding: EdgeInsets.all(16), child: Center(child: SizedBox(width: 20, height: 20, child: CircularProgressIndicator(strokeWidth: 2)))),
               error: (_, _) => Column(children: [
@@ -76,7 +76,7 @@ class HealthDrawer extends ConsumerWidget {
               final ok = await showDialog<bool>(context: context, builder: (ctx) => AlertDialog(
                 title: const Text('退出登录'), content: const Text('确定退出？'),
                 actions: [TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text('取消')), TextButton(onPressed: () => Navigator.pop(ctx, true), child: const Text('确定'))]));
-              if (ok == true) { await ref.read(authProvider.notifier).logout(); if (context.mounted) context.go('/login'); }
+              if (ok == true) { await ref.read(authProvider.notifier).logout(); goRoute(ref, 'login'); }
             }),
           ],
         ),