feat(sample): 添加示例应用的核心功能模块

- 集成依赖管理配置文件 libs.versions.toml，统一管理项目依赖版本
- 实现演示 API 接口定义，包含登录、注册、用户管理等 RESTful 端点
- 创建认证仓库 AuthRepository，处理用户会话管理和加密存储
- 开发登录和注册界面，实现用户身份验证流程
- 构建聊天界面 ChatScreen，支持消息收发和历史记录显示
- 实现联系人管理功能，包含好友搜索和添加删除操作
- 添加会话列表界面，展示最近聊天记录和未读消息提示

file-service/src/main/java/com/xuqm/file/service/FileStorageService.java

@@ -37,7 +37,7 @@ public class FileStorageService {
     @Value("${file.upload-dir:/tmp/xuqm-file-upload}")
     private String uploadDir;
 
-    @Value("${file.base-url:https://sentry.xuqinmin.com}")
+    @Value("${file.base-url:https://dev.xuqinmin.com}")
     private String baseUrl;
 
     private final FileRepository fileRepository;

file-service/src/main/resources/application.yml

@@ -41,7 +41,7 @@ jwt:
 
 file:
   upload-dir: ${FILE_UPLOAD_DIR:/tmp/xuqm-file-upload}
-  base-url: ${FILE_BASE_URL:https://sentry.xuqinmin.com}
+  base-url: ${FILE_BASE_URL:https://dev.xuqinmin.com}
 
 logging:
   level:

tenant-service/src/main/java/com/xuqm/tenant/controller/SdkConfigController.java

@@ -21,13 +21,13 @@ public class SdkConfigController {
     private final AppRepository appRepository;
     private final FeatureServiceRepository featureServiceRepository;
 
-    @Value("${sdk.im-ws-url:wss://sentry.xuqinmin.com/ws/im}")
+    @Value("${sdk.im-ws-url:wss://dev.xuqinmin.com/ws/im}")
     private String imWsUrl;
 
-    @Value("${sdk.file-service-url:https://sentry.xuqinmin.com}")
+    @Value("${sdk.file-service-url:https://dev.xuqinmin.com}")
     private String fileServiceUrl;
 
-    @Value("${sdk.im-api-url:https://sentry.xuqinmin.com}")
+    @Value("${sdk.im-api-url:https://dev.xuqinmin.com}")
     private String imApiUrl;
 
     public SdkConfigController(AppRepository appRepository,

tenant-service/src/main/resources/application.yml

@@ -80,6 +80,6 @@ management:
         include: health,info
 
 sdk:
-  im-ws-url: ${SDK_IM_WS_URL:wss://sentry.xuqinmin.com/ws/im}
+  im-ws-url: ${SDK_IM_WS_URL:wss://dev.xuqinmin.com/ws/im}
-  file-service-url: ${SDK_FILE_SERVICE_URL:https://sentry.xuqinmin.com}
+  file-service-url: ${SDK_FILE_SERVICE_URL:https://dev.xuqinmin.com}
-  im-api-url: ${SDK_IM_API_URL:https://sentry.xuqinmin.com}
+  im-api-url: ${SDK_IM_API_URL:https://dev.xuqinmin.com}