v1.9.2 - File Backup & Cleanup

Critical Safety Improvements

Features

• File-level backup before pull: Automatic tar.gz backup of entire /config directory before any git pull operation
• Automatic backup cleanup: Keeps only the most recent backup after successful pull + config reload
• Merge conflict detection: Proper detection using git ls-files --unmerged
• Stash restoration on conflict: Local changes preserved when merge conflicts occur

Fixes

• Fixed merge conflict detection using unreliable git diff --diff-filter=U
• Stashed changes are now properly restored when conflicts occur
• Backups retained on any failure (config validation, reload) for emergency recovery
• Prevents filesystem bloat by cleaning up old backups

Safety Guarantees

• Before pull: Always creates file backup first (mandatory, pull fails if backup creation fails)
• On pull failure: All backups retained for potential restoration
• After reload: Only cleans up old backups after successful config reload
• Fallback recovery: If git becomes unusable, can restore from file backup

Test Coverage

• 56 unit tests (all passing)
• Merge conflict detection and notification tests
• Backup cleanup on success tests
• Backup retention on failure tests
• Stash restoration tests

Breaking Changes

None - fully backward compatible