Collector failures, service-API errors, WS connection lifecycle, and config reload/discovery events were previously invisible outside the browser (or, for a few config/discovery cases, logged with an inconsistent ad-hoc console.error). Add a small scoped logger (lib/logger.ts, level via LOG_LEVEL) and wire it through server.ts, the scheduler, service collector, config loader/effective store, and the WS server so operators can see failures via `docker logs`. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>