- Add TTS service using AVSpeechSynthesizer for voice output
- Add STT service using SpeechAnalyzer (macOS 26) for transcription
- Add voice input (microphone) button in chat with recording level indicator
- Add speak button on assistant messages for TTS playback
- Add language toggle (EN-CA/FR-CA) for bilingual speech recognition
- Fix Swift 6 strict concurrency issues in audio callbacks
- Update proto schema with TTS/STT message types and RPCs
- Update gRPC provider with speech service endpoints
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
