Comprehensive documentation for the speech services module:
- docs/SPEECH.md: Architecture, API reference, WebSocket protocol,
environment variables, provider configuration, Docker setup,
GPU VRAM budget, and frontend integration examples
- apps/api/src/speech/AGENTS.md: Module structure, provider pattern,
how to add new providers, gotchas, and test patterns
- README.md: Speech capabilities section with quick start
Fixes#406
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
