* feat(openai): recognize GPT-Live realtime models and fail closed with guidance
OpenAI's gpt-live-1/gpt-live-1-mini full-duplex voice models are API
early-access only and use a WebRTC-only quicksilver session protocol with
handoff-based agent delegation that OpenClaw's realtime transports do not
implement yet. Configuring a gpt-live-* model now produces actionable
configuration errors on the realtime WebSocket bridge and Talk browser
sessions instead of opaque provider errors or audio-only sessions without
agent access. GA gpt-realtime behavior unchanged; default model stays
gpt-realtime-2.1.
Related: #104683
* test(openai): narrow browser session union before asserting offerUrl
a21a08c504