* Add first-run onboarding wizard for recording mechanics
Introduce a minimal, skippable first-run wizard that teaches the record
key. On first authenticated launch it renders as a full-screen takeover
(gated above PusherProvider) so the stream/compose keyboard handlers are
not mounted to compete for the same keys.
Steps: welcome, hold ` to record, tap V to switch audio/video, tap ` to
toggle recording, mic/camera permission priming, and a recap. The lessons
detect the real gestures and never block — Esc or the Skip control
dismisses at any point.
Reuses existing pieces: VideoAudioToggle, useMediaDevices().requestLabels
for permission priming, KeyHint, and isTypingTarget. Extracts the shared
HOLD_THRESHOLD_MS into lib/constants and reuses it in the compose overlay.
Resolves#259
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01A9AHySdLb1zfZAEm6SuaQP
* nits
* light mode support for onboarding
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Co-authored-by: Claude <noreply@anthropic.com>
Arjun Patel
fec7f5d6d8