guinness-oai cc8325f181 Stop mirroring Codex user input into realtime (#27116) ...

## Why

The realtime frontend model and the backing Codex thread should present
one coherent assistant. Raw typed messages, steers, and worker reports
belong to the orchestrator; the frontend model should receive the
orchestrator's user-facing result rather than a second copy of those
inputs.

Today normal `turn/start` input is automatically inserted into the
realtime conversation, while `turn/steer` is not. Besides creating
inconsistent context, this can make the frontend model react
independently before Codex has produced the response it should speak.

## What changed

- Remove automatic accepted-user-input mirroring into realtime
- Remove the mirror-only echo-suppression flag and dead V2 prefix helper
- Preserve explicit app-to-realtime text injection and FEM-to-Codex
delegation
- Replace the positive mirror tests and obsolete snapshots with a
negative routing regression test

## Test plan

- `cargo test -p codex-core
conversation_user_text_turn_is_not_sent_to_realtime`
- `cargo test -p codex-core
conversation_startup_context_is_truncated_and_sent_once_per_start`
- `cargo test -p codex-core inbound_handoff_request_starts_turn`

cc8325f181 · 2026-06-09 15:20:01 -07:00

History

..

common

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

suite

Stop mirroring Codex user input into realtime (#27116)

2026-06-09 15:20:01 -07:00

all.rs

remove temporary ownership re-exports (#16626)

2026-04-03 00:33:34 -07:00

responses_headers.rs

Add HTTP window ID to Responses client metadata (#26923)

2026-06-08 10:49:59 -07:00