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Test scenarios cover: - Successful tombstone creation with actor/reason tracking - Original type preservation in tombstone - Audit trail recording - Issue deletion with dependency cleanup - Error handling for non-existent issues - Unsupported storage backend fallback Both functions achieve 100% test coverage. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>