179d9e1a22
Stream audio to speaker as the agent generates tokens instead of waiting for the full response. First sentence plays within ~1-2s of agent starting to respond. - run_agent: add stream_callback to run_conversation/chat, streaming path in _interruptible_api_call accumulates chunks into mock ChatCompletion while forwarding content deltas to callback - tts_tool: add stream_tts_to_speaker() with sentence buffering, think block filtering, markdown stripping, ElevenLabs pcm_24000 streaming to sounddevice OutputStream - cli: wire up streaming TTS pipeline in chat(), detect elevenlabs provider + sounddevice availability, skip batch TTS when streaming is active, signal stop on interrupt Falls back to batch TTS for Edge/OpenAI providers or when elevenlabs/sounddevice are not available. Zero impact on non-voice mode (callback defaults to None).