Adds a standalone voice recording popup (voice.html) accessible via the
extension popup button or Ctrl+Shift+V hotkey. Records audio, uploads to
rNotes, and transcribes with a 3-tier cascade: server Whisper API, live
Web Speech API (real-time text while recording), and offline Parakeet.js
(NVIDIA 0.6B, ~634MB cached in IndexedDB). Saves as AUDIO notes with
editable transcript and notebook selection.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
