✅ Server Flask/Waitress attivo
TXT: C:\MBStudio\OnAir.txt
JPG: C:\MBStudio\OnAir.jpg
Endpoints:
 - /read/onair
 - /nowplaying.txt
 - /cover.jpg
 - /covers/<filename>
 - /api/now
 - /api/history?limit=10
 - /health