Expose only the exact model used by Codex realtime V3: gpt-live-1-codex.
- no public or compatibility realtime aliases
- translates the bridge JSON adapter to the Frameless Bidi session shape
- forwards
openai-alpha: quicksilver=v2 - preserves real API-key providers as independent owners of their own public models
Validated with typecheck and 162/162 tests.