ci: replace actionlint with jactionlint

[viceice]

Changes

• Replaces actionlint with jactionlint, its actively maintained fork, in the lint-actions job, using its official image ghcr.io/jdx/jactionlint pinned by digest.
• Adds jactionlint to mise.toml, so mise install makes it available locally, and mentions it in AGENTS.md.

Context

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• This closes an existing Issue, Closes: #
• This doesn't close an Issue, but I accept the risk that this PR may be closed if maintainers disagree with its opening or implementation

AI assistance disclosure

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• Yes — substantive assistance (AI-generated non‑trivial portions of code, tests, or documentation).
• Yes — other (please describe):

Claude Opus 5.5 (Claude Code) made the switch and ran jactionlint locally, both from the image and through mise.

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📥 Commits

Reviewing files that changed from the base of the PR and between d1a4211 and 9d26062.

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📒 Files selected for processing (3)

• .github/workflows/build.yml
• AGENTS.md
• mise.toml

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[qodo-code-review]

PR Summary by Qodo

ci: replace actionlint with jactionlint in CI and local tooling

⚙️ Configuration changes 📝 Documentation 🕐 10-20 Minutes

AI Description

• Replace actionlint with digest-pinned jactionlint for GitHub workflow and local action checks.
• Pin the same jactionlint version for local use through mise and document its command.

Diagram

graph TD
  CI["CI lint job"] --> J["jactionlint"] --> F["Workflows and actions"]
  M["mise local CLI"] --> J

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High-Level Assessment

Keep the existing lint job and replace its pinned image, with mise supplying the same version locally. A separate binary installation in CI would add setup without a clear benefit for this contained tool swap.

Files changed (3) +4 / -2

Documentation (1) +1 / -0

AGENTS.mdDocument the local jactionlint command +1/-0

Document the local jactionlint command

• Adds 'mise exec -- jactionlint' to the documented commands for checking GitHub workflows and local actions.

AGENTS.md

Other (2) +3 / -2

build.ymlRun jactionlint in the CI lint-actions job +2/-2

Run jactionlint in the CI lint-actions job

• Replaces the actionlint Docker image with the digest-pinned jactionlint 1.8.2 image. The existing lint arguments and sparse checkout remain in place, and the checkout comment names the new tool.

.github/workflows/build.yml

mise.tomlPin jactionlint for local use +1/-0

Pin jactionlint for local use

• Adds jactionlint 1.8.2 to mise, matching the version used by the CI image.

mise.toml

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