feat(voice): batch STT via Yapper (Phase 1)#105
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MediaRecorder wrapper with runtime mimeType negotiation (WebM/Opus preferred, MP4 fallback for Safari), auto-stop timer, cancel support, and FormData helper for Yapper transcription endpoint. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Yapper health polling (30s interval), browser mic permission flow, MediaRecorder capture, and POST /v1/transcribe for batch transcription. Graceful degradation when Yapper is unavailable or mic is blocked. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Hold-to-record button with pointer events. States: hidden (unavailable), idle, recording (red pulse), transcribing (spinner), mic-blocked. Cancel on pointer leave. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
ChatInput accepts optional voice prop, renders MicButton in the input row. Transcript is inserted into the textarea on recording stop. ChatView owns useVoice hook and passes it down. Mic button CSS with recording pulse, transcribing spin, and blocked states. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Verifies mic button visibility, recording state, transcript insertion, mic-blocked display, and graceful absence when voice prop is omitted. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* docs(design): tts playback design doc (phase 2) Covers: useVoice TTS extension, text chunking with pipelining, AudioContext playback, VoiceSettings component, ChatView auto-speak on message_end, interruption rules, voice selection, and error handling. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * docs(design): address review feedback on tts design - AudioContext reuse: singleton with lazy creation and cleanup - AbortController on synthesize() for cancellable fetches - Track messageId instead of messages.length for TTS trigger - Simplify to sequential playback for MVP (no pipelining) - Lazy voice list fetch (on first TTS enable, not mount) - Dynamic default voice from /v1/voices response Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
audio.ts): MediaRecorder wrapper with runtime format negotiation (WebM/Opus preferred, MP4 fallback for Safari), auto-stop timer, cancel support, and FormData helper for Yapper's/v1/transcribeendpointuseVoice.ts): Yapper health polling (30s), browser mic permission flow withmicBlockedstate, recording state machine, and batch transcription via POSTvoiceprop on ChatInput, transcript inserted into textarea for user review before sending. Voice is purely opt-in — Mitzo works identically without YapperFrontend-only — server and v2 protocol are untouched. Follows the voice integration design doc.
Test plan
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