The readiness probe was crashing with 'res.status is not a function' because
asyncHandler(async (req, res) => {...}, 'health-ready') was called directly,
but asyncHandler's signature is (logError, fn, context) — first arg is the
logger, not the handler. The fix uses boundAsyncHandler like all other routes
in the file do.
Added 8 unit tests for both /health/live and /health/ready:
- live always 200 (liveness ≠ readiness)
- ready returns 503 when config/services/docker fail
- no 'res.status is not a function' crash when dependencies fail
- all 4 check keys present in response
Also added MONITORING_PUBLIC env var (defaults true) and the new health
endpoints to PUBLIC_ROUTES so k8s probes can hit them without auth.
