fix: 管理员系统 + 注册流程重构 + UI改版 + 全链路修复

- 新增管理员角色(手机号12345678910)，管理员可增删医生、查看患者
- 注册页重构：去掉角色选择+审核码，改为选医生+填姓名
- 医生端点按DoctorId过滤患者，Patient↔Doctor关系建立
- Doctor/DoctorProfile/User实体新增关联字段
- JSON循环引用修复(IgnoreCycles)
- /api/doctors改为公开接口
- 登录闪屏修复+原生Android启动页
- 输入框全局白底+灰框
- 蓝牙重连同步修复
- Web端(doctor_web+health_app/web)全部删除
- 全局UI改版：白底企业风，新配色和组件系统
- 新品牌图标和启动图

health_app/lib/providers/auth_provider.dart

@@ -33,17 +33,15 @@ class AuthNotifier extends Notifier<AuthState> {
   @override
   AuthState build() {
     _checkAuth();
-    return const AuthState(isLoading: true);
+    return const AuthState(isLoggedIn: false, isLoading: false);
   }
 
   Future<void> _checkAuth() async {
     final db = ref.read(localDbProvider);
     final refresh = await db.read('refresh_token');
-    if (refresh == null) {
-      state = const AuthState(isLoggedIn: false, isLoading: false);
-      return;
-    }
+    if (refresh == null) return; // 无token，保持 isLoggedIn: false
 
+    state = const AuthState(isLoading: true);
     try {
       final response = await Dio(BaseOptions(baseUrl: baseUrl))
           .post('/api/auth/refresh', data: {'refreshToken': refresh});
@@ -65,6 +63,8 @@ class AuthNotifier extends Notifier<AuthState> {
   }
 
   Future<void> _loadProfile() async {
+    // Admin 不查 profile（无 User 记录）
+    if (state.user?.role == 'Admin') return;
     try {
       final api = ref.read(apiClientProvider);
       final response = await api.get('/api/user/profile');
@@ -95,12 +95,11 @@ class AuthNotifier extends Notifier<AuthState> {
   }
 
   /// 注册（新用户，需选身份）
-  Future<String?> register(String phone, String code, String role, {String? inviteCode}) async {
+  Future<String?> register(String phone, String code, String name, String doctorId) async {
     try {
       final api = ref.read(apiClientProvider);
       final response = await api.post('/api/auth/register', data: {
-        'phone': phone, 'smsCode': code, 'role': role,
-        if (inviteCode != null) 'inviteCode': inviteCode,
+        'phone': phone, 'smsCode': code, 'name': name, 'doctorId': doctorId,
       });
       final data = response.data['data'];
       if (data == null) return response.data['message'] ?? '注册失败';
@@ -108,7 +107,7 @@ class AuthNotifier extends Notifier<AuthState> {
       await api.saveTokens(data['accessToken'], data['refreshToken']);
       final user = data['user'];
       state = AuthState(isLoggedIn: true, isLoading: false,
-        user: UserInfo(id: user['id'] ?? '', phone: user['phone'] ?? '', role: role),
+        user: UserInfo(id: user['id'] ?? '', phone: user['phone'] ?? '', role: user['role'] ?? 'User'),
       );
       return null;
     } catch (e) {