新增获取和更新当前用户信息的API接口，并在设置页面中更新用户信息的调用逻辑，提升用户体验和代码可维护性。

client/mobile/api.ts

@@ -222,6 +222,26 @@ export const UserAPI = {
     } catch (error) {
       throw error;
     }
+  },
+  
+  // 获取当前用户信息
+  getCurrentUser: async (): Promise<UserResponse> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/users/me`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  },
+  
+  // 更新当前用户信息
+  updateCurrentUser: async (userData: Partial<User>): Promise<UserUpdateResponse> => {
+    try {
+      const response = await axios.put(`${API_BASE_URL}/users/me`, userData);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
   }
 };
 

client/mobile/pages_settings.tsx

@@ -19,9 +19,7 @@ export default function SettingsPage() {
       phone?: string
       password?: string
     }) => {
-      const res = await UserAPI.getUsers({ limit: 1 })
-      if (!res.data?.[0]?.id) throw new Error('用户ID不存在')
-      return UserAPI.updateUser(res.data[0].id, {
+      return UserAPI.updateCurrentUser({
         nickname: data.nickname,
         email: data.email,
         phone: data.phone,