CHW-5920 APIKeyStoreUnavailable

api keys store unavailable

Default message: api keys store unavailable
HTTP status: 503 (server)

Problem. The api_keys store pointer is nil. Cause. The server started without a database (commonly CHAINSAW_OFFLINE=1 or a misconfigured test harness). Fix. Operator must wire a Postgres backing store and restart, or take the api-keys surface off the load balancer until it is configured. HTTP 503.