The per-platform reconnect watcher auto-paused a platform after 10
consecutive reconnect failures, setting next_retry=inf and requiring a
manual /platform resume to recover. But both pause sites only ever fire
on *retryable* failures — non-retryable errors (bad auth) already drop
out of the retry queue earlier. So a transient DNS outage that spanned
the watcher's backoff window would silently park the bot forever, even
after connectivity returned.
The watcher's own docstring already promised 'retryable failures keep
retrying at the backoff cap indefinitely' — the code contradicted it.
Remove the auto-pause from both reconnect-failure branches. Retryable
failures now retry at the 5-min backoff cap forever and self-heal once
the network recovers. The circuit breaker (_pause_failed_platform /
_resume_paused_platform) stays for manual /platform pause|resume.
Fixes#35284.
45465b0d5d