Chromium's fake microphone never registers as a speaker at the SFU, and Firefox's steady tone does so in about two runs out of three, with or without the browser's audio processing. The test stays, out of the gate, until the dev SFU gets a lower speaker threshold or the harness a louder fake device.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Unit tests for tracks$ and trackBySource$, an end-to-end check of isActive$ through a mute cycle (skipped on Chromium, whose fake microphone the SFU never hears), the architecture document brought in line with the track list, and the changed behaviour recorded in the plan.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
