Fix self-repository uses: syntax (resolves code scanning findings) - #4
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Resolves the three zizmor/self-repository code scanning findings (https://github.com/rubyatscale/rubyfmt-action/security/code-scanning/1,2,3) by switching 'uses: ./' to 'uses: $/' for the three composite-action references in this repo's own test jobs, per: https://github.blog/changelog/2026-07-30-reference-same-repository-actions-with-self-repository-syntax/ actionlint (rhysd/actionlint#711) doesn't understand this syntax yet, so its step now ignores that specific known-false-positive message.
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Summary
Resolves the three open code scanning findings (
zizmor/self-repository) at https://github.com/rubyatscale/rubyfmt-action/security/code-scanning..github/workflows/ci.ymlreferencing this repo's own composite action via the older workspace-relativeuses: ./syntax. GitHub added a dedicated "self-repository" syntax (uses: $/...) for this, which zizmor now recommends since it isn't subject to runtime filesystem state.test-formatted,test-unformatted,test-macosjobs) fromuses: ./touses: $/.actionlintdoesn't understand this syntax yet (rhysd/actionlint#711, still open) and misparses it as an incomplete repository reference. Added a scoped-ignorefor that specific message so actionlint keeps checking everything else; left a comment pointing at the upstream issue so it's easy to remove later.Test plan
zizmor --persona=regular .(v1.30.0, the version that introduced this audit) reports no findings.actionlintpasses locally with the added-ignore.uses: $/actually resolves this repo's composite action at runtime (this is a very new GitHub Actions feature, so this PR's own CI run is the real-world check).main's nextzizmorscan doesn't find them again.