The full-screen Nest stage's green speaking indicator had two issues:
1. **Cropping at the top.** The glow halo (drawBehind, up to MAX_GLOW_RADIUS
past the avatar) and detached outer ring rendered onto the avatar's own
draw layer, which only had the avatar's bounds (75dp circle). The
surrounding stage Surface (RoundedCornerShape(20dp)) clipped the topmost
pixels of the first row's glow. Wrap the avatar+badges in an outer Box
that reserves [ringPadding] (max of MAX_GLOW_RADIUS / OUTER_RING_GAP +
OUTER_RING_MAX_WIDTH) and move the drawBehind there, drawing relative to
the inner avatar circle. Badge corner-alignment stays on the inner Box
so role/hand/mic badges still anchor to the avatar.
2. **Lit up on mic-on, not on actual speech.** `onSpeakerActivity` was
called once per MoQ object received — i.e. every ~20 ms while the mic
was open, regardless of whether the frame contained voice, silence, or
room noise. That meant the green ring was effectively a "mic is on"
indicator. Split the heartbeat (kept in `onSpeakerActivity`, which
still drives the cliff detector and clears the connecting overlay)
from the speaking detector (now in `onAudioLevel`, gated on the
decoded peak amplitude clearing SPEAKING_LEVEL_THRESHOLD = 0.06,
~-24 dBFS). The existing 250 ms expiry job gives natural hysteresis
between syllables.
Claude
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