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* feat(voice): add dedicated voice assistance module for STT/TTS Extracts speech-to-text (whisper.cpp) and text-to-speech (piper) into a dedicated `src/openhuman/voice/` domain module with its own RPC namespace (`openhuman.voice_*`). Adds proactive availability checking via `voice_status` so the UI can show clear errors when binaries/models are missing instead of failing silently at transcription time. - New module: voice/types.rs, voice/ops.rs, voice/schemas.rs, voice/mod.rs - 4 RPC endpoints: voice_status, voice_transcribe, voice_transcribe_bytes, voice_tts - 21 unit tests + 1 integration test (json_rpc_e2e) - Frontend updated to use voice_* endpoints with status check on mode switch Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * style: fix cargo fmt in voice/ops.rs Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * test(e2e): add voice mode integration spec Tests switching to voice input mode, verifying status check fires, recording button renders, and switching back to text mode restores text input. Also checks reply mode toggle visibility. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: remove unused waitForText import in voice-mode e2e spec Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat(voice): in-process whisper engine and LLM post-processing - Add whisper-rs (0.16) for in-process whisper.cpp inference, eliminating cold-start latency from subprocess-per-call (~1-3s) to warm inference (~50ms). Model is loaded once during bootstrap and reused across calls. Falls back to whisper-cli subprocess if in-process loading fails. - Add LLM post-processing layer that passes raw transcription through Ollama to fix grammar, punctuation, and filler words. Accepts optional conversation context to disambiguate names and technical terms. Gracefully degrades to raw whisper output if Ollama is unavailable. - Update voice RPC endpoints with new optional params (context, skip_cleanup) and return both cleaned text and raw_text. - Update frontend to pass conversation history as context for voice transcription cleanup, and update TypeScript interfaces to match. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * style: apply cargo fmt formatting fixes Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(build): make whisper-rs optional behind `whisper` feature flag The whisper-rs crate requires cmake to compile whisper.cpp from source, which is not available in the CI environment. Move it behind an optional cargo feature so CI builds succeed without cmake. The whisper_engine module now compiles as a no-op stub when the feature is disabled, returning "whisper feature not compiled in" errors. Desktop builds can opt in with `--features whisper`. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * style: cargo fmt whisper_engine.rs Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(ci): make whisper-rs mandatory and install cmake in CI Revert whisper-rs from optional to mandatory dependency. Add cmake installation to all CI workflows (build, typecheck, test, release) and the CI Docker image so whisper-rs can compile whisper.cpp from source. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * style: cargo fmt whisper_engine.rs Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: address code review findings across voice module - whisper_engine: validate WAV sample rate (must be 16kHz) and channel count (1 or 2) before feeding audio to whisper - speech: offload load_engine and transcribe_in_process to tokio::task::spawn_blocking to avoid blocking the Tokio runtime - ops: use RAII guard for WHISPER_BIN env var in test to prevent races and ensure restore on panic; log temp file cleanup failures instead of silently ignoring; sanitize paths in debug logs to basenames only - postprocess: add test for disabled cleanup config returning raw text - voice-mode.spec: assert failure when neither voice CTA nor unavailable message appears; make reply mode test runnable in isolation with auth/nav setup Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * style: apply cargo fmt Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>