connect() intentionally returns True when Telegram polling starts in
degraded mode (or a reconnect's require_progress=False skips the strict
readiness gate), so background recovery can retry without failing
gateway startup. But _mark_connected() published platform_state
"connected" unconditionally, and the reconnect watcher in gateway/run.py
stamped "connected" again right after -- so gateway_state.json was
indistinguishable from a healthy adapter for as long as recovery took
(observed ~11h on one seat).
_send_path_degraded already tracks exactly this (set at polling
generation start, cleared on the first confirmed getUpdates round-trip),
so:
- BasePlatformAdapter._mark_connected() takes a `degraded` flag and
publishes "retrying" instead of "connected" when set.
- TelegramAdapter passes its current _send_path_degraded into
_mark_connected().
- The gateway/run.py reconnect watcher checks the same flag before
overwriting the adapter's own status write.
- _record_polling_progress() republishes "connected" the moment
polling actually proves progress, so the state does not stay wedged
at "retrying" until the next disconnect.
Fixes#101391
ce52ae21a7