Simplify pass on top of the canary fix:
- Drop the three CP commit SHAs from comments — issue #2090 covers
the audit trail, SHAs would rot.
- Pull the inline `900` into TLS_TIMEOUT_SEC=$((15 * 60)) so the
bash mirrors the TS side (15 min) at a glance.
- TENANT_HOST extraction now strips http(s) AND any port suffix, so
getent doesn't silently fail on a ws://host:443 style URL.
- sed-redact Authorization/Cookie out of the curl -v dump, defensive
against future callers adding an auth header to this probe.
Pure cleanup; no behaviour change to the happy path.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>