jif d46a98d31a Bridge host-loaded skills into the skills extension (#26172) ...

## Why

The skills extension needs to become the path that exposes local host
skills without losing the behavior already owned by core skill loading.
Host skill discovery is not just `$CODEX_HOME/skills`: it also includes
config layers, bundled-skill settings, plugin roots, runtime extra
roots, and the filesystem for the selected primary environment.

Rather than making the extension reload host skills and risk drifting
from that authoritative load, this PR bridges the already-loaded
per-turn skills outcome into the extension. That lets the extension
advertise host skills and inject explicit `$skill` prompts while
preserving the same roots, disabled/hidden state, rendered paths, and
environment-backed file reads that the legacy path uses.

## What Changed

- Adds `HostLoadedSkills` in `core-skills` to wrap the turn's
`SkillLoadOutcome` and read `SKILL.md` through the filesystem that
loaded that skill.
- Stores `HostLoadedSkills` in turn extension data for normal turns and
review turns, so the skills extension can consume the loaded host
catalog without reloading it.
- Adds `HostSkillProvider` under `ext/skills/src/provider/host.rs`,
mapping host-loaded skill metadata into the skills-extension
catalog/read contract.
- Registers the host provider by default from
`codex_skills_extension::install()`.
- Preserves host skill metadata such as dependencies, disabled state,
hidden-from-prompt policy, and slash-normalized display paths.
- Passes host-loaded skills through `SkillListQuery` and
`SkillReadRequest` so explicit skill invocation reads only resources
from the loaded host catalog.
- Adds integration coverage for a real legacy
`$CODEX_HOME/skills/.../SKILL.md` skill being listed and injected
through the installed extension.

## Testing

- Added `installed_extension_loads_host_skills_from_legacy_roots` in
`ext/skills/tests/skills_extension.rs`.
- `just test -p codex-skills-extension`

d46a98d31a · 2026-06-04 15:28:06 +02:00

History

..

examples

Make context contributors async (#22491)

2026-05-13 16:43:28 +02:00

src

Bridge host-loaded skills into the skills extension (#26172)

2026-06-04 15:28:06 +02:00

BUILD.bazel

extension: add initial typed extension API (#21736)

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

Cargo.toml

skills: resolve per-turn catalogs from turn input context (#26106)

2026-06-03 13:32:55 +02:00

notes.md

extension: add initial typed extension API (#21736)

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