Add a centralized FileWatcher in codex-core (using notify) that watches skill roots from the config layer stack (recursive) Send `SkillsChanged` events when relevant file system changes are detected On `SkillsChanged`: * Invalidate the skills cache immediately in ThreadManager * Emit EventMsg::SkillsUpdateAvailable to active sessions ~~* Broadcast a new app-server notification: SkillsListUpdatedNotification~~ This change does not inject new items into the event stream. That means the agent will not know about new skills, so it won't be able to implicitly invoke new skills. It also won't know about changes to existing skills, so if it has already read the contents of a modified skill, it will not honor the new behavior. This change also does not detect modifications to AGENTS.md. I plan to address these limitations in a follow-on PR modeled after #9985. Injection of new skills and AGENTS was deemed to risky, hence the need to split the feature into two stages. The changes in this PR were designed to easily accommodate the second stage once we have some other foundational changes in place. Testing: In addition to automated tests, I did manual testing to confirm that newly-created skills, deleted skills, and renamed skills are reflected in the TUI skill picker menu. Also confirmed that modifications to behaviors for explicitly-invoked skills are honored. --------- Co-authored-by: Xin Lin <xl@openai.com>
codex-core
This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.
Dependencies
Note that codex-core makes some assumptions about certain helper utilities being available in the environment. Currently, this support matrix is:
macOS
Expects /usr/bin/sandbox-exec to be present.
When using the workspace-write sandbox policy, the Seatbelt profile allows
writes under the configured writable roots while keeping .git (directory or
pointer file), the resolved gitdir: target, and .codex read-only.
Linux
Expects the binary containing codex-core to run the equivalent of codex sandbox linux (legacy alias: codex debug landlock) when arg0 is codex-linux-sandbox. See the codex-arg0 crate for details.
All Platforms
Expects the binary containing codex-core to simulate the virtual apply_patch CLI when arg1 is --codex-run-as-apply-patch. See the codex-arg0 crate for details.