- Add bd migrate-tombstones command (bd-8f9) to convert legacy
deletions.jsonl entries to inline tombstones in issues.jsonl
- Supports --dry-run to preview changes
- Supports --verbose for detailed progress
- Archives deletions.jsonl with .migrated suffix after migration
- Update bd compact to prune expired tombstones (bd-okh)
- All compact modes now prune tombstones older than 30-day TTL
- Reports count of pruned tombstones in output
- Add resurrection merge test (bd-bob)
- Tests scenario where base is tombstone but both left/right resurrect
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>