CHW-5801 ClientStoreUnavailable

client credential store is unavailable; the server started without a database — check the operator dashboard

Default message: client credential store is unavailable; the server started without a database — check the operator dashboard
HTTP status: 503 (server)

Problem. A client-credentials endpoint refused because the credential store pointer is nil. Cause. The process started without a database — typical only in tests or misconfigured local dev. Fix. Configure CHAINSAW_DATABASE_URL and restart. HTTP 503.