A deferred backlog (queued while the connector's dws login was not yet the
bot owner) now drains by itself once the owner's identity is back, instead of
requiring the owner to manually reply 重试.
- startAutoRetry runs a 2-minute background ticker (text mode) that calls
autoFlushDeferred until the connector context is cancelled
- autoFlushDeferred replays the backlog but messages the owner ONLY when
something actually completed — a tick while the identity is still wrong is
silent (no spam); each completed requester is still notified
- flushDeferred (manual 重试) and the auto path share flushDeferredOnce
- the deferred notice now tells the owner it will auto-recover after login,
with 重试 as an optional 'do it now'
Tests: auto-retry stays silent while stuck, drains + notifies on recovery.
修雨
b75f07547f