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/pages/auth/login_page.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';
 
 /// 登录页——手机号 + 验证码
@@ -71,7 +71,7 @@ class _LoginPageState extends ConsumerState<LoginPage> {
       setState(() => _error = err);
       return;
     }
-    if (mounted) context.go('/home');
+    goRoute(ref, 'home');
   }
 
   @override
@@ -80,7 +80,7 @@ class _LoginPageState extends ConsumerState<LoginPage> {
 
     // 已登录直接跳转
     if (authState.isLoggedIn && !authState.isLoading) {
-      WidgetsBinding.instance.addPostFrameCallback((_) => context.go('/home'));
+      WidgetsBinding.instance.addPostFrameCallback((_) => goRoute(ref, 'home'));
     }
 
     return Scaffold(

health_app/lib/pages/medication/medication_list_page.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/data_providers.dart';
 
 /// 用药列表页
@@ -37,7 +37,7 @@ class MedicationListPage extends ConsumerWidget {
         error: (_, _) => _empty(context),
       ),
       floatingActionButton: FloatingActionButton.extended(
-        onPressed: () => context.push('/medications/add').then((_) => ref.invalidate(medicationListProvider)),
+        onPressed: () { pushRoute(ref, 'medicationAdd'); ref.invalidate(medicationListProvider); },
         icon: const Icon(Icons.add), label: const Text('添加药品'),
       ),
     );
@@ -65,7 +65,7 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
       'frequency': 'Daily', 'timeOfDay': [if (_timeCtrl.text.isNotEmpty) _timeCtrl.text],
       'source': 'Manual', 'startDate': DateTime.now().toIso8601String().substring(0, 10),
     });
-    if (mounted) context.pop();
+    popRoute(ref);
   }
 
   @override Widget build(BuildContext context) => Scaffold(

health_app/lib/pages/profile/profile_page.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';
 
 /// 个人中心页面
@@ -38,12 +38,12 @@ class ProfilePage extends ConsumerWidget {
             ),
           ),
           const SizedBox(height: 8),
-          _MenuItem(icon: Icons.person, title: '编辑资料', onTap: () => context.push('/profile/edit')),
-          _MenuItem(icon: Icons.folder, title: '健康档案', onTap: () => context.push('/health-archive')),
+          _MenuItem(icon: Icons.person, title: '编辑资料', onTap: () => pushRoute(ref, 'profileEdit')),
+          _MenuItem(icon: Icons.folder, title: '健康档案', onTap: () => pushRoute(ref, 'healthArchive')),
           _MenuItem(icon: Icons.devices, title: '设备管理', onTap: () {}),
           const Divider(),
-          _MenuItem(icon: Icons.settings, title: '设置', onTap: () => context.push('/settings')),
-          _MenuItem(icon: Icons.info, title: '关于', onTap: () => context.push('/page/about')),
+          _MenuItem(icon: Icons.settings, title: '设置', onTap: () => pushRoute(ref, 'settings')),
+          _MenuItem(icon: Icons.info, title: '关于', onTap: () => pushRoute(ref, 'staticText', params: {'type': 'about'})),
           const Divider(),
           _MenuItem(
             icon: Icons.logout, title: '退出登录', textColor: const Color(0xFFE53935),
@@ -52,7 +52,7 @@ class ProfilePage extends ConsumerWidget {
                 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'); }
             },
           ),
         ],

health_app/lib/pages/settings/settings_pages.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';
 
 /// 设置页
@@ -10,17 +10,17 @@ class SettingsPage extends ConsumerWidget {
   Widget build(BuildContext context, WidgetRef ref) => Scaffold(
     appBar: AppBar(title: const Text('设置')),
     body: ListView(children: [
-      _SetItem(icon: Icons.shield, title: '隐私保护中心', onTap: () => context.push('/page/privacy')),
-      _SetItem(icon: Icons.notifications, title: '通知偏好', onTap: () => context.push('/settings/notifications')),
+      _SetItem(icon: Icons.shield, title: '隐私保护中心', onTap: () => pushRoute(ref, 'staticText', params: {'type': 'privacy'})),
+      _SetItem(icon: Icons.notifications, title: '通知偏好', onTap: () => pushRoute(ref, 'notificationPrefs')),
       _SetItem(icon: Icons.text_fields, title: '字体大小', trailing: _FontSlider()),
-      _SetItem(icon: Icons.article, title: '协议与公告', onTap: () => context.push('/page/terms')),
-      _SetItem(icon: Icons.info, title: '关于', onTap: () => context.push('/page/about')),
+      _SetItem(icon: Icons.article, title: '协议与公告', onTap: () => pushRoute(ref, 'staticText', params: {'type': 'terms'})),
+      _SetItem(icon: Icons.info, title: '关于', onTap: () => pushRoute(ref, 'staticText', params: {'type': 'about'})),
       const Divider(),
       _SetItem(icon: Icons.logout, title: '退出登录', textColor: const Color(0xFFE53935), onTap: () async {
         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'); }
       }),
     ]),
   );