- Fix bd-tnsq: executeDelete now sets closed_at=NULL when creating
tombstones, satisfying the CHECK constraint that requires
closed_at IS NULL when status != 'closed'
- Fix bd-08ea: cleanup command now also prunes expired tombstones
(older than 30 days) after converting closed issues to tombstones
- Add regression test for batch deletion of closed issues
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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