Six of eight workloads had no readinessProbe, so a pod turned Ready the
moment its process started. The verify job relies on `rollout status`, so
it passed for images that crash-looped or served errors, which left the
rollback safety net inert.
Each probe targets the path the service is actually reached on:
- homepages: / (verified 200)
- error-pages: /404.html, the path Traefik's errorPages middleware
requests. / returns 403 by design and would never pass.
- webinar-checker: /health (verified 200). /metrics also answers, but it
is a Prometheus endpoint, not a readiness signal.
The two userbot deployments stay without probes: they expose no port and
no session file, and the panel reaches Telegram through its own client. A
truthful signal there needs a health endpoint in the app itself.