Alex 2a25db8498 Add ILD-based distance estimation + proximity zones ...

Computes Interaural Level Difference (dB) from left/right ear energy.
Fuses with triangulated distance (70/30 weight) for more robust estimate.
Classifies into proximity zones: intimate (<0.5m), conversational (0.5-2m),
across_room (2-5m), far (>5m).

ILD→distance mapping is empirical and should be calibrated per install.
Gaze vertical component now responds to proximity (closer = eyes down).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-12 21:12:00 -05:00

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