v1.1.0 - Security hardening release

Critical security fixes:
- Command injection prevention
- Resource exhaustion protection
- Memory leak prevention
- Race condition fixes

Improved stability and error handling throughout.

Network Scanner v1.0.0

First stable release of Network Scanner - a beautiful macOS app for local network device discovery.

Key Features:
✓ Swiss/Teenage Engineering aesthetic
✓ Quick & Full network scanning
✓ Device vendor detection (500+ manufacturers)
✓ Bambu Labs printer detection
✓ Click-to-copy IP/MAC addresses
✓ Auto-refresh (10s/30s/1m/5m intervals)
✓ Filters & sorting
✓ Bonjour/mDNS discovery
✓ Custom network icon
✓ Single-instance protection

Tech Stack:
- Node.js/Express backend
- React 18 frontend
- Electron 27 wrapper
- Bonjour & SSDP discovery