Emit events for instance status changes #3477
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- Emit an event on every instance status change - To make events more informative, set termination reasons whenever terminating instances - Add `terminated_by_user` termination reason - Remove redundant logging now covered by events - Refactor runtime-only status changes that were not persisted and did not affect logic - For event readability, only include the busy blocks count in job assigned/unassigned events, which is the only place where the count can change
un-def
approved these changes
Jan 20, 2026
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terminated_by_usertermination reason#3290