Based on the git diff showing extensive package-lock.json changes and modifications to the agent system prompt and configuration, here's the commit message:

```
feat: add AI SDK dependencies and refine agent voice interaction config

- Add @ai-sdk packages for enhanced AI capabilities
- Install Deepgram SDK, livekit-client, and werift for voice/WebRTC
- Expand agent system prompt with multi-tool workflows and Claude Code interaction patterns
- Adjust VAD timing (1.2s silence threshold) and turn detection for better voice UX
- Switch TTS to inworld/inworld-tts-1 with Olivia voice
- Configure interruption timing (0.2s detection, no word requirement)
- Add comprehensive guidelines for conversational responses vs structured output
- Document plan mode triggers and Claude response type handling

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
```

packages/voice-assistant/.env.example

@@ -0,0 +1,12 @@
+# OpenAI API Key (for GPT-4, Whisper STT, and TTS)
+OPENAI_API_KEY=sk-...
+
+# TTS Configuration (optional - defaults shown)
+TTS_VOICE=alloy
+# Available voices: alloy, echo, fable, onyx, nova, shimmer
+TTS_MODEL=tts-1
+# Available models: tts-1 (faster), tts-1-hd (higher quality)
+
+# Server Configuration
+PORT=3000
+NODE_ENV=development