code-mode standalone: extract protocol and add host crate (#27724)

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This is phase 1 of a 4 phase stack:
1. **Add protocol and host crates for new IPC code mode implementation**
2. Create the new standalone binary
3. Create a new IPC `CodeModeSessionProvider` to use new binary
4. Remove v8 from core and only use IPC provider


## Add protocol and host crates for new IPC code mode implementation
Establish a clean process boundary without changing the existing
in-process behavior.

- Add the codex-code-mode-protocol crate for shared session, runtime,
response, and tool-definition types.
- Move protocol-facing code out of the V8-backed implementation.
- Add a buildable codex-code-mode-host crate as the foundation for the
standalone process.
- Keep the existing in-process runtime as the active implementation.

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This commit is contained in:

Channing Conger

2026-06-11 22:37:26 -07:00

committed by GitHub

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parent 216ce03031

commit aa46f2debf

19 changed files with 407 additions and 282 deletions

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codex-rs/code-mode-protocol/src/description.rs

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