docs: document AUR install channel in README, site, and changelog

[kjanat]

Summary

Closes the gap left by #35 — the AUR packages are live but neither the
README, the landing site, nor the changelog mentioned them.

• README.md ## Install: yay -S runner-run-bin added to the
  top-tier list (alongside npm and cargo binstall). Source variant
  yay -S runner-run slotted into the collapsed Other install methods
  block, next to the cargo install entries.
• site/src/index.html: new arch · aur · primary copy-button
  between cargo · binstall · primary and cargo · build from source;
  same markup pattern as the existing buttons.
• CHANGELOG.md [Unreleased]: ### Added describes the two AUR
  packages, the four-shell completion install paths, the workflow, and the
  prepare script. ### Security documents the action-SHA pinning sweep
  and the persist-credentials hardening from
  feat(aur): publish runner-run + runner-run-bin with shell completions #35.

Test plan

• HTML well-formed: `` open/close balanced (7=7 across the file).
• README install section renders the three primary install options in order and the collapsed source-build alternatives.
• CHANGELOG follows the existing Keep-a-Changelog style (Added/Security under `[Unreleased]`, post-release checklist preserved at the bottom of the section).
• Site visual check — confirm the new button wraps cleanly on the existing layout (no local build attempted; user verification on `bun run dev` if desired).

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	runner	430841b	Commit Preview URL Branch Preview URL	Jun 03 2026, 06:11 PM

[coderabbitai]

📝 Walkthrough

Walkthrough

Arrr, this PR be a tidy wee patch that announces AUR package support for runner-run across three fronts! The changelog documents the new AUR packaging, shell completion installations, and security enhancements (GitHub Actions uses-pinning and credential handling). README gets updated with both binary (runner-run-bin) and source (runner-run) installation options via yay for Arch users. Finally, the website install button gets a matching AUR option so users can copy the yay command directly. All changes be consistent and focused on makin' AUR distribution transparent to users.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~4 minutes

Possibly related PRs

• kjanat/runner#35: Implements the aur-prepare.sh strict semver validation, pkgver/pkgrel rewriting, and per-arch sha256sums_* injection directly referenced in this PR's changelog entries.

Suggested labels

documentation

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✨ Shiny AUR packages now documented with care,
Binary and source builds floating everywhere,
Arch users be cheerin' from shore to sea,
A changelog, a README, and buttons so free~ 🏴‍☠️ ✨

🚥 Pre-merge checks | ✅ 8

✅ Passed checks (8 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title follows conventional commit guidelines with a lowercase verb prefix ('docs:') and clearly describes the main changes: documenting AUR install channels across README, site, and changelog.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Changelog Update	✅ Passed	No source code files were modified—only documentation (README, HTML template, changelog). These fall under the check exclusions, so the CHANGELOG requirement does not apply.
Semver Version Bump Validation	✅ Passed	PR #36 only modifies documentation and website markup (excluded by check). No source code files were modified, so version bump requirement does not apply.
Agents.Md Documentation Updated	✅ Passed	No AGENTS.md exists in repository; PR only documents AUR packages in README, CHANGELOG, HTML—no architecture, workflow, automation, CLI, or agent-logic changes.
Description check	✅ Passed	Pull request description is directly related to the changeset, detailing documentation updates for AUR packages across README, site, and changelog with clear implementation details.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch worktree-aur-readme-site

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