refactor(repo): consolidate openflare-server to root and move subprojects to internal/apps

- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.

frontend/lib/services/admin/index.ts

@@ -0,0 +1,43 @@
+export { AdminSystemConfigService } from './system-config.service';
+export { AdminAuthSourceService } from './auth-source.service';
+export { AdminTaskService } from './task.service';
+export { AdminUserService } from './user.service';
+export { AdminStatusService } from './status.service';
+export { AdminLogService } from './log.service';
+export { AdminTemplateService } from './template.service';
+export { AdminCacheService } from './cache.service';
+
+export type {
+  SystemConfig,
+  CreateSystemConfigRequest,
+  CreateUserRequest,
+  UpdateSystemConfigRequest,
+  AuthSource,
+  AuthSourceRequest,
+  ToggleAuthSourceRequest,
+  TaskMeta,
+  TaskParam,
+  TaskParamType,
+  TaskExecution,
+  TaskExecutionStatus,
+  ListTaskExecutionsRequest,
+  ListTaskExecutionsResponse,
+  DispatchTaskRequest,
+  AdminUser,
+  ListUsersRequest,
+  ListUsersResponse,
+  UpdateUserStatusRequest,
+  SystemStatus,
+  AppUpdateStatus,
+  Schedule,
+  CreateScheduleRequest,
+  UpdateScheduleRequest,
+  CacheStatus,
+  CacheConfig,
+  Template,
+  CreateTemplateRequest,
+  UpdateTemplateRequest,
+  StorageDriver,
+  StorageConfig,
+  ObjectStorageConfig,
+} from './types';