- Boundary-aware ID replacement (prevents wy-1 corrupting wy-10)
- Sort IDs by length descending before replacement
- Validate configured prefix is not empty
- Validate ID format before renaming (numeric suffix required)
- All critical issues from oracle review addressed
- Detects prefix mismatches during import
- Shows warning with mismatched prefixes and counts
- Added --rename-on-import flag to automatically fix prefixes
- Auto-import is lenient about prefixes (doesn't enforce)
- All tests passing
- Implements bd stale command to show issues with execution_state where executor is dead/stopped
- Adds --release flag to automatically release orphaned issues
- Adds --threshold flag to customize heartbeat staleness threshold (default: 300s/5min)
- Handles missing executor instances (LEFT JOIN) for cases where executor was deleted
- Adds QueryContext and BeginTx helper methods to SQLiteStorage for advanced queries
- Fixes ExternalRef comparison bug in import_shared.go (pointer vs string)
- Removes unused imports in import.go
Resolves vc-124
