Research findings and a concrete split of work: web-side items for this
repo (pre-warm camera, torch toggle, continuous focus, keep-stream-
alive) and a native handover list for the companion dev (pre-warmed
CameraX + ML Kit, QR-only format, 720p keep-latest analysis, torch,
zoom nudge, haptic dismiss) with acceptance criteria and how to
measure. Quick win landed now: live scan runs at 10 scans/sec when the
platform has a native BarcodeDetector, keeping 4/s only for the
JS-worker fallback.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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