restrict ops endpoints to admin-only access block operator and viewer keys from admin maintenance routes cover destructive pricing cleanup in smoke execution, not only preview extend orchestration without regressing existing smoke stages
- add backend README and refresh API map and smoke regression docs - add full backend smoke regression script - add admin pricing cleanup preview and dry-run endpoints - add helper script for test pricing cleanup - verify typed error contracts, draft flow, publish readiness and preview flows - verify publish preview retention and clean backend startup behavior