feat: restore source parity and harden agent runtime

backend-fastapi/zq_demo/router.py

@@ -0,0 +1,11 @@
+"""
+zq_demo模块统一路由
+"""
+from fastapi import APIRouter
+
+from zq_demo.api import router as demo_router
+
+router = APIRouter()
+
+# 注册子模块路由
+router.include_router(demo_router, prefix="", tags=["Demo"])