The streaming mic button only began recording on the SECOND click. The VAD
library creates its AudioContext inside vad.start() and never resumes it; on the
first click the lazy model load (import + MicVAD.new) ran first, so the context
was created after the user-gesture window expired and started suspended — the
audio worklet never ran, so nothing happened. The second click was fast (model
cached) so the context landed inside the gesture and worked.
Create and resume our own AudioContext synchronously at the top of start()
(inside the click gesture, before the model load) and inject it into MicVAD,
which then does not take ownership of it; it is reused across start/stop and
closed only on unmount. Add a "loading" status so the first click is shown as a
spinner (disabled) while the model loads, which also blocks a confusing second
click.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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