Allow `OPENAI_REALTIME_URL` env var to override the hardcoded
`wss://api.openai.com/v1/realtime?intent=transcription` endpoint, with
the current value as default. Pairs with the OpenAI SDK's existing
`OPENAI_BASE_URL` support that already makes HTTP audio endpoints
reroutable. Unblocks pointing the realtime session at any OpenAI
Realtime API protocol-compatible backend (Azure OpenAI, Alibaba
Bailian / DashScope, self-hosted compat layers) without further
changes.
Closes#569
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
