fix: register n8n_desc_router in server.py

backend/server.py

@@ -36,6 +36,7 @@ from api.roadmap.roadmap_flow_route import router as roadmap_flow_router
 from api.experiment_log.experiment_log_route import router as experiment_log_router
 from api.common.auth_route import router as auth_router
 from api.product_desc.product_desc_route import router as product_desc_router
+from api.product_desc.n8n_desc import router as n8n_desc_router
 from api.fashion_matches.router import router as fashion_matches_router
 from api.fashion_matches.simulator import router as fashion_matches_simulator_router
 from api.product_desc.bulk_ops_route import router as bulk_ops_router
@@ -199,6 +200,7 @@ app.include_router(roadmap_flow_router)  # Roadmap & Flow
 app.include_router(experiment_log_router)  # Experiment Log
 app.include_router(auth_router)  # Auth (login/me/logout)
 app.include_router(product_desc_router)  # Ultra Description Manager
+app.include_router(n8n_desc_router)  # n8n Ultra Description API
 app.include_router(fashion_matches_router)  # Fashion Matches (AI Stylist Engine)
 app.include_router(fashion_matches_simulator_router)  # Realtime Fashion Simulator
 app.include_router(bulk_ops_router)  # Bulk Search & Edit