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When a process record is pruned from the database by another supervisor, the heartbeat rescues RecordNotFound and sets process to nil to trigger re-registration. But the heartbeat timer can fire again before re-registration completes, calling heartbeat on nil. Use safe navigation to make the heartbeat a no-op when process is nil. Fixes #693 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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When a process record is pruned from the database by another supervisor, the heartbeat rescues
RecordNotFoundand sets the process tonilto trigger re-registration. But the heartbeat timer can fire again before re-registration completes, calling heartbeat on nil.Use safe navigation to make the heartbeat a no-op when the process is nil.
Fixes #693