fix(pool): reject task promises on unexpected worker exit (#3343)

fix(pool): reject task promises on unexpected worker exit (#3343)

* fix(pool): reject task promises on unexpected worker exit

* fix(pool): finalize exited workers before settling tasks

* docs(api): scope worker response guarantees by transport

* fix(pool): preserve affinity and normalize worker failures

* fix(pool): settle exited worker tasks when replacement fails

* fix(pool): complete exit callbacks and thread termination

* fix(pool): preserve aborts during queue redistribution

* fix(pool): defer dequeue notifications until redistribution completes

* [autofix.ci] apply automated fixes

* fix(pool): redistribute tasks after worker reindexing

* fix(pool): isolate synchronous task send failures

* fix(pool): preserve detached queue recovery and cancellation

* docs(api): clarify worker failure guarantees

* fix(pool): defer dequeue notifications across worker removal

* fix(pool): preserve affinity while survivors initialize

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Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>