feat(compact): Add --prune mode for standalone tombstone pruning (bd-c7y5)

Add a new --prune mode to `bd compact` that removes expired tombstones from
issues.jsonl without requiring AI compaction or deleting closed issues.

Features:
- `bd compact --prune` removes tombstones older than 30 days (default TTL)
- `bd compact --prune --older-than N` uses custom N-day TTL
- `bd compact --prune --dry-run` previews what would be pruned
- Supports --json output for programmatic use

This reduces sync overhead by eliminating accumulated tombstones that were
previously only pruned as a side effect of compaction or cleanup operations.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Steve Yegge
2025-12-23 23:50:15 -08:00
parent cdcb716cfc
commit 36feb15d83
3 changed files with 996 additions and 750 deletions

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