Right-click sky → "🌐 feed a tab": getDisplayMedia({video:true, audio:{…}})
lets the user share another tab's audio (a YouTube tab, a stream). Wired via
createMediaStreamSource into preSat → the full FX chain + master, so it's
audible live, crush-able, and resampleable by GODSONIQ from one wiring. Video
track stopped immediately; a track 'ended' listener handles Stop-sharing.
Audio constraints (verified against MDN/W3C/Chrome docs): suppressLocalAudio
Playback so the tab isn't heard twice, and echoCancellation/noiseSuppression/
autoGainControl off so the WebRTC voice-DSP doesn't mangle music. Chromium-only
(feature-detected; graceful ticker hints for unsupported / no-audio-track);
macOS grabs a tab not all-system; DRM services capture silent, YouTube fine.
Grimoire (truth) + manual Appendix J updated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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