feat: 医生端完整实现 + 双角色登录 + 健康日历 + 饮食记录重做 + 配色系统重构

后端:
- User表加Role字段 + DoctorProfile表 + 废弃旧Doctor数据
- JWT加Role claim + 注册/登录拆分(/api/auth/register + /api/auth/login)
- 医生端点全量加JWT鉴权+Role校验(15个端点)
- 日历端点改造(用药/运动/随访按日期+星期匹配)
- 饮食记录PUT端点 + 健康记录DELETE端点
- 用户Profile端点返回Role

前端:
- 登录页重做(角色选择卡片 用户紫/医生蓝 + 审核码6666 + 注册返登录)
- App路由分流(userRole→患者端/医生端)
- 医生端: 工作台Dashboard + 患者管理(搜索分页) + 问诊/报告/随访CRUD
- 报告审核: AI预分析+指标表格+严重程度4级+模板多选+评语
- 随访编辑: 患者选择器+日期时间+打通患者端
- 健康日历: 可点击日历+当日安排列表+用药/运动/随访颜色标记
- 饮食记录: 热量趋势7/30天+日历(一周)+当日胶囊详情+侧滑编辑删除
- 健康档案: 日期选择器+手术可添加多条+白底渐变保存按钮
- 配色系统: 清理25个未使用色+新增doctorBlue/drawerGradient/pageGrey
- 患者端侧边栏: 新渐变+白底按钮+紫色汉堡图标
- AI对话: 用户气泡白底黑字+药管家改蓝色
- App启动闪屏: 防登录页闪烁

文档: color_design_system.md(20页面完整配色设计+图标底色对照表)

health_app/lib/providers/auth_provider.dart

@@ -3,17 +3,16 @@ import 'package:dio/dio.dart';
 import '../core/api_client.dart';
 import '../core/local_database.dart';
 
-/// 用户简要信息
 class UserInfo {
   final String id;
   final String phone;
+  final String role;
   final String? name;
   final String? avatarUrl;
 
-  UserInfo({required this.id, required this.phone, this.name, this.avatarUrl});
+  UserInfo({required this.id, required this.phone, this.role = 'User', this.name, this.avatarUrl});
 }
 
-/// 认证状态
 class AuthState {
   final UserInfo? user;
   final bool isLoggedIn;
@@ -22,7 +21,6 @@ class AuthState {
   const AuthState({this.user, this.isLoggedIn = false, this.isLoading = true});
 }
 
-/// 认证 Provider
 final authProvider = NotifierProvider<AuthNotifier, AuthState>(AuthNotifier.new);
 
 final localDbProvider = Provider<LocalDatabase>((ref) => LocalDatabase.instance);
@@ -53,10 +51,9 @@ class AuthNotifier extends Notifier<AuthState> {
       if (data != null) {
         await db.write('access_token', data['accessToken']);
         await db.write('refresh_token', data['refreshToken']);
-        state = AuthState(
-          isLoggedIn: true,
-          isLoading: false,
-          user: UserInfo(id: '', phone: '', name: data['user']?['name']),
+        final u = data['user'] as Map<String, dynamic>?;
+        state = AuthState(isLoggedIn: true, isLoading: false,
+          user: UserInfo(id: '', phone: '', role: u?['role'] ?? 'User'),
         );
         _loadProfile();
       } else {
@@ -73,35 +70,53 @@ class AuthNotifier extends Notifier<AuthState> {
       final response = await api.get('/api/user/profile');
       final user = response.data['data'];
       if (user != null) {
-        state = AuthState(
-          isLoggedIn: true,
-          isLoading: false,
+        state = AuthState(isLoggedIn: true, isLoading: false,
           user: UserInfo(
-            id: user['id'] ?? '',
-            phone: user['phone'] ?? '',
-            name: user['name'],
-            avatarUrl: user['avatarUrl'],
+            id: user['id'] ?? '', phone: user['phone'] ?? '',
+            role: user['role'] ?? state.user?.role ?? 'User',
+            name: user['name'], avatarUrl: user['avatarUrl'],
           ),
         );
       }
     } catch (e) {
-      print('[Auth]加载个人信息失败: $e');
+      print('[Auth] loadProfile: $e');
     }
   }
 
-  /// 发送验证码，返回 (error, devCode)
+  /// 发送验证码
   Future<({String? error, String? devCode})> sendSms(String phone) async {
     try {
       final api = ref.read(apiClientProvider);
       final response = await api.post('/api/auth/send-sms', data: {'phone': phone});
-      final devCode = response.data['data']?['devCode'] as String?;
-      return (error: null, devCode: devCode);
+      return (error: null, devCode: response.data['data']?['devCode'] as String?);
     } catch (e) {
       return (error: '发送失败: $e', devCode: null);
     }
   }
 
-  /// 验证码登录
+  /// 注册（新用户，需选身份）
+  Future<String?> register(String phone, String code, String role, {String? inviteCode}) 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,
+      });
+      final data = response.data['data'];
+      if (data == null) return response.data['message'] ?? '注册失败';
+
+      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),
+      );
+      return null;
+    } catch (e) {
+      return '注册失败: $e';
+    }
+  }
+
+  /// 登录（已有账号）
   Future<String?> login(String phone, String code) async {
     try {
       final api = ref.read(apiClientProvider);
@@ -111,13 +126,10 @@ class AuthNotifier extends Notifier<AuthState> {
 
       await api.saveTokens(data['accessToken'], data['refreshToken']);
       final user = data['user'];
-      state = AuthState(
-        isLoggedIn: true,
-        isLoading: false,
+      state = AuthState(isLoggedIn: true, isLoading: false,
         user: UserInfo(
-          id: user['id'] ?? '',
-          phone: user['phone'] ?? '',
-          name: user['name'],
+          id: user['id'] ?? '', phone: user['phone'] ?? '',
+          role: user['role'] ?? 'User', name: user['name'],
           avatarUrl: user['avatarUrl'],
         ),
       );
@@ -133,9 +145,14 @@ class AuthNotifier extends Notifier<AuthState> {
     final db = ref.read(localDbProvider);
     final refresh = await db.read('refresh_token');
     if (refresh != null) {
-      try { await api.post('/api/auth/logout', data: {'refreshToken': refresh}); } catch (e) { print('[Auth]登出请求失败: $e'); }
+      try { await api.post('/api/auth/logout', data: {'refreshToken': refresh}); } catch (e) { print('[Auth] logout: $e'); }
     }
     await api.clearTokens();
     state = const AuthState(isLoggedIn: false, isLoading: false);
   }
 }
+
+/// 便捷：当前用户角色
+final userRoleProvider = Provider<String>((ref) {
+  return ref.watch(authProvider).user?.role ?? 'User';
+});