feat: add MCP support (#20716)

Co-authored-by: QuantumGhost <obelisk.reg+git@gmail.com>

api/tasks/remove_app_and_related_data_task.py

@@ -13,6 +13,7 @@ from models import (
     AppAnnotationHitHistory,
     AppAnnotationSetting,
     AppDatasetJoin,
+    AppMCPServer,
     AppModelConfig,
     Conversation,
     EndUser,
@@ -41,6 +42,7 @@ def remove_app_and_related_data_task(self, tenant_id: str, app_id: str):
         # Delete related data
         _delete_app_model_configs(tenant_id, app_id)
         _delete_app_site(tenant_id, app_id)
+        _delete_app_mcp_servers(tenant_id, app_id)
         _delete_app_api_tokens(tenant_id, app_id)
         _delete_installed_apps(tenant_id, app_id)
         _delete_recommended_apps(tenant_id, app_id)
@@ -89,6 +91,18 @@ def _delete_app_site(tenant_id: str, app_id: str):
     _delete_records("""select id from sites where app_id=:app_id limit 1000""", {"app_id": app_id}, del_site, "site")
 
 
+def _delete_app_mcp_servers(tenant_id: str, app_id: str):
+    def del_mcp_server(mcp_server_id: str):
+        db.session.query(AppMCPServer).filter(AppMCPServer.id == mcp_server_id).delete(synchronize_session=False)
+
+    _delete_records(
+        """select id from app_mcp_servers where app_id=:app_id limit 1000""",
+        {"app_id": app_id},
+        del_mcp_server,
+        "app mcp server",
+    )
+
+
 def _delete_app_api_tokens(tenant_id: str, app_id: str):
     def del_api_token(api_token_id: str):
         db.session.query(ApiToken).filter(ApiToken.id == api_token_id).delete(synchronize_session=False)