Mirror the in-progress fix for in-review: a reviewer/merger runs
ephemerally with no assignedAgentId/checkedOutBy, so an in-review task
in an active review/merge status (reviewing, merging, merging-fix,
fixing) now reads as a live session without an assignment. A null-status
in-review row is awaiting human review, not actively worked, so it stays
assignment-gated and idle.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
b990872827