Fixed
- 🔒 Improved config save reliability - API keys are now much safer from corruption and loss:
- Automatic backups before each save (keeps last 5 versions in
~/.free-coding-models.backups/) - Post-write verification confirms file was written correctly and data wasn't lost
- Explicit error handling instead of silent failures
- Auto-repair on startup if config is corrupted (restores from latest backup)
- Console notifications when backup is used or config is repaired
- Automatic backups before each save (keeps last 5 versions in