Active-goal threshold compaction can pre-empt the normal post-turn tail
and return once it schedules a deferred handoff or auto-continue. When
that turn is the successful response from an auto-retry, returning there
skips the later retry-gate cleanup and leaves isRetrying stuck.
Resolve the completed retry gate before the compaction-continuation
return, and cover the retry-success-over-threshold path so future
changes cannot strand prompt()/waitForIdle() behind a stale retry state.
Refs #3174
roboomp
eef2f7b7e9