feat: MCP streamable_http connection test + auto-test on import

backend/python/app/api/market.py

@@ -16,6 +16,7 @@ from ..models import (
 )
 from ..auth import get_current_user, get_current_user_id, get_current_user_id_optional
 from ..middleware.log_service import LogService
+from app.api.admin.mcp_admin import _test_mcp_server
 
 router = APIRouter()
 
@@ -417,6 +418,9 @@ def upload_app(
             db.add(server)
             db.commit()
 
+            # 导入后自动做一次连通性测试，状态会同步为 connected / error
+            _test_mcp_server(server, db)
+
     # 用户创建/导入的应用自动标记为已安装
     existing_install = db.query(AppInstallation).filter(
         AppInstallation.user_id == current_user.id,