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Vance Ingalls
952401d12a
The three audio canaries (`audio-fx-rack`, `audio-track-mute`, `audio-groups`) sat at 0% while the stack was in review. Open them to 100% by deleting them rather than raising the percentage — a canary that gates nothing is a branch every future reader has to evaluate. Removed: - the three `CANARIES` registry entries; - every `isCanaryEnabled` branch in the studio (FX button, group pointer, rack section, track-mute affordances) — the features now render on their own preconditions; - the runtime's `canaries` record and its `__hf.setCanaries` handler, plus the `setCanaries` type surface; - `syncRuntimeMedia`'s `silenceHiddenAudio` option. Its only caller always passed `true`, so hidden audio is now unconditionally silent in preview, matching what `audioMixer` already renders. Tests assert the unconditional behaviour instead of the enrolment transition: the FX button is present on any audio track and absent on a visual one, the group pointer follows clip count rather than enrolment, and the hidden-clip zero is paired with a visible-clip control so the assertion can still fail.