- Prefix command now falls back to local SQLite database when API is unavailable
- Queries repeater_contacts table for repeaters matching prefix pattern
- Uses public_key LIKE 'prefix%' to find repeaters by first two characters
- Only returns active repeaters (is_active = 1)
- Adds device type indicators: (Repeater) or (Room Server)
- Response indicates data source: 'API cache' vs 'local database (offline mode)'
- Updated help text to mention database fallback capability
- Tested with sample data: correctly finds repeaters by prefix
- Provides offline functionality when API is down or network unavailable
- Maintains API-first approach with intelligent fallback
agessaman