CHUD connection check

Lightweight test for flaky mobile / 5G paths. Auto-retries if a probe fails.

This host…
StatusChecking…
Round-trip—
Probes0 ok / 0 fail
If this page eventually loads but the main site aborts:
  1. Try the alternate link below (same site, different hostname).
  2. Switch Wi‑Fi ↔ mobile data once.
  3. Turn off VPN and Private DNS for a minute.
  4. Open login after a green “online” status here.
Open login Try www alternate