Adds an `agents/openai.yaml` beside each `SKILL.md` so the skills work in
Codex as well as Claude Code, without generated copies:
- `interface.display_name` + `interface.short_description` for the Codex
skill picker, hand-written for all 39 skills.
- `policy.allow_implicit_invocation: false` on the 22 user-invoked skills —
the Codex analog of `disable-model-invocation: true`, so Codex excludes
them from implicit invocation while explicit `$skill` still works.
- Document the dual-harness invocation model in `.agents/invocation.md`,
`CLAUDE.md`, and the promoted-bucket READMEs.
- Add `AGENTS.md` as a symlink to `CLAUDE.md` so Codex reads the same
instructions; note Codex as a `link-skills.sh` install target.
Slimmed-down rework of the approach prototyped in #522: keeps the essential
cross-harness metadata, drops the Ruby validator, the runtime-detector test,
per-skill `default_prompt`s, and the unrelated promotion changes.
Co-authored-by: gabimoncha <gabimoncha@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add a header note clarifying that link-skills.sh is a dev-only script for
maintainers, not a supported installer, and that modifications or requests
for modification will not be approved.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
