jif-oai 569ff6a1c4 extension: move git attribution into an extension (#21738) ...

## Why

Git commit attribution is prompt policy, not session orchestration.
After #21737 adds the extension-registry seam, this moves that
prompt-only behavior out of `codex-core` so `Session` can consume
extension-contributed prompt fragments instead of owning a one-off
policy path itself.

Before this PR, `Session` injected the trailer instruction directly from
`codex-core` ([session
assembly](https://github.com/openai/codex/blob/a57a747eb667753118217b8bb47dfd1fff88cbde/codex-rs/core/src/session/mod.rs#L2733-L2739),
[helper
module](https://github.com/openai/codex/blob/a57a747eb667753118217b8bb47dfd1fff88cbde/codex-rs/core/src/commit_attribution.rs#L1-L33)).
This branch moves that same responsibility into
[`codex-git-attribution`](https://github.com/openai/codex/blob/b5029a67360fe5c948aa849d4cf65fd2597ebaae/codex-rs/ext/git-attribution/src/lib.rs#L14-L100).

## What changed

- Added the `codex-git-attribution` extension crate.
- Snapshot `CodexGitCommit` plus `commit_attribution` at thread start,
then contribute the developer-policy fragment through the extension
registry.
- Register the extension in app-server thread extensions.
- Remove the old `codex-core` helper module and direct `Session`
injection path.

This keeps the existing behavior intact: the prompt is only contributed
when `CodexGitCommit` is enabled, blank attribution still disables the
trailer, and the default remains `Codex <noreply@openai.com>`.

## Stack

- Stacked on #21737.

569ff6a1c4 · 2026-05-11 12:53:15 +02:00

History

..

extension-api

extension: add initial typed extension API (#21736)

2026-05-11 11:06:24 +02:00

git-attribution

extension: move git attribution into an extension (#21738)

2026-05-11 12:53:15 +02:00