mirror of
https://github.com/openai/codex.git
synced 2026-05-15 16:53:05 +00:00
34bb85519f
## Why Extensions can observe thread and turn lifecycle events today, but there was no single host-owned hook for changes to the effective thread configuration. That makes features that need to react to model, permission, or tool-suggest updates either depend on individual mutation paths or risk going stale after runtime config refreshes. This adds a typed config-change contributor so extension-owned state can stay synchronized with the effective thread config while the host remains responsible for deciding when config changed. ## What Changed - Added `ConfigContributor<C>` to `codex_extension_api`, with before/after immutable snapshots of the effective config plus session/thread extension stores. - Added registry builder/accessor support through `config_contributor` and `config_contributors`. - Emits config-change callbacks after committed updates from session settings, per-turn setting updates, and `refresh_runtime_config`. - Builds effective config snapshots only when config contributors are registered, and suppresses no-op callbacks when the before/after snapshots are equal. - Added a core session regression test that verifies contributors observe both model changes and user-layer runtime config changes, including access to session and thread extension stores. ## Validation Added `config_change_contributor_observes_effective_config_changes` in `codex-rs/core/src/session/tests.rs` to cover the new contributor path.