feat(api): standardize REST contracts and auth

app/api/v1/endpoints/meta.py

@@ -25,7 +25,7 @@ router = APIRouter()
 logger = logging.getLogger(__name__)
 
 
-@router.get("/meta/project", summary="获取项目元数据", description="获取当前项目的元数据和配置信息", response_model=ProjectMetaResponse)
+@router.get("/projects/current/metadata", summary="获取项目元数据", description="获取当前项目的元数据和配置信息", response_model=ProjectMetaResponse)
 async def get_project_metadata(
     ctx: ProjectContext = Depends(get_project_context),
     metadata_repo: MetadataRepository = Depends(get_metadata_repository),
@@ -52,7 +52,7 @@ async def get_project_metadata(
     )
 
 
-@router.get("/meta/projects", summary="列出用户项目", description="获取当前用户有权限的所有项目列表", response_model=list[ProjectSummaryResponse])
+@router.get("/projects", summary="列出用户项目", description="获取当前用户有权限的所有项目列表", response_model=list[ProjectSummaryResponse])
 async def list_user_projects(
     current_user=Depends(get_current_metadata_user),
     metadata_repo: MetadataRepository = Depends(get_metadata_repository),
@@ -88,7 +88,7 @@ async def list_user_projects(
     ]
 
 
-@router.get("/meta/db/health", summary="检查数据库健康状态", description="检查项目数据库连接的健康状况")
+@router.get("/projects/current/database-health", summary="检查数据库健康状态", description="检查项目数据库连接的健康状况")
 async def project_db_health(
     pg_session: AsyncSession = Depends(get_project_pg_session),
     ts_conn: AsyncConnection = Depends(get_project_timescale_connection),