Consumers listen on BroadcastChannel('muse-bridge-v1').
Cross-origin: open CONDUCTOR from the consumer window, or append
?target=<origin> to use postMessage.
SOURCESGPU —
VOICEoff
FILTER1.00
DRIVE0.00
DELAY0.00
REVERB0.00
WET/DRY0.50
⚠ MONITOR routes the mic to your speakers. Use headphones —
without them this will feed back. Analysis and bridge broadcast work
with monitoring off.