examples/openai_realtime_brain/ -- the canonical foreign-language OpenAI
Realtime brain (Python, ~150 lines, websockets lib only). Not in CI
(zero-non-Rust-dev-deps dev loop per AGENTS.md). Mirrors the slice-2
echo_brain pattern and proves the protocol is language-agnostic.
Hand-rolled against the spec §4.2 mapping rather than using the openai
Python SDK: the SDK is unused by the wire-shape (both sides are plain
WSS), so dropping it removes a dep that the plan skeleton imported but
never called. session.update is sent with turn_detection=null (S4)
matching the Rust brain.
LEARNING.md gains 5 new pointers under a Slice 3 heading: async-trait
in trait objects, the translator pure-function layer, additive protocol
extension via #[serde(other)], the FOB-boundary side-channel mpsc, and
the WS subprotocol handshake (openai_client.rs).
README.md gains the Slice 3 dev loop section (mock mode without an
OpenAI key, real-OpenAI mode, and the Python brain alternative).
.gitignore learns about __pycache__/*.pyc (the Python brains aren't in
CI but byte-compiled artifacts should never be tracked).
