feat(ci): validate checklist is updated

[Molter73]

Description

This is a small CI check that verifies a few fields in the checklist section of the PR description is updated. If this is not too disruptive, we can probably make the check required in the near future.

Checklist

• Patch has a change log entry OR does not need one
• Investigated and inspected CI test results
• Updated documentation accordingly

Automated testing

• Added unit tests
• Added integration tests
• Added regression tests

If any of these don't apply, please comment below.

Testing Performed

• Check is skipped for draft PRs: CI run.
• Change log check fails when not set: CI run.
• CI check fails when not set: CI run
• Job passes when both entries are set: CI run
• Marking the PR as ready for review triggers the check: CI run

[Stringy]

LGTM! might need to rebase though, since this has changes from #635

[Molter73]

@CodeRabbit review

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✅ Actions performed

Review triggered.

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📝 Walkthrough

Walkthrough

This PR introduces a GitHub Actions workflow that enforces required PR checklist items on pull requests. The workflow validates that PRs contain checked entries for changelog updates and CI test result inspection, with exemption logic for the red-hat-konflux[bot] actor.

Changes

PR Checklist Enforcement

Layer / File(s)	Summary
Workflow Trigger .github/workflows/pr-checklist.yml	Workflow triggers on PR open, edit, synchronize, and reopen events.
Job Configuration .github/workflows/pr-checklist.yml	Job runs on ubuntu-24.04 and is gated to non-draft pull requests.
Checklist Validation .github/workflows/pr-checklist.yml	Grep-based validation checks PR body for two required - [x] ... entries: changelog requirement and CI inspection requirement; workflow fails if either is missing.
Bot Exemption .github/workflows/pr-checklist.yml	Conditional step exempts red-hat-konflux[bot] from enforcement and logs exemption message.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: adding a CI validation check for PR checklist fields.
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.
Description check	✅ Passed	The PR description is well-structured and comprehensive, following the template with all required sections filled out appropriately.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch mauro/ci/validate-checklist

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/pr-checklist.yml:
- Around line 5-9: The pull_request event types list is missing the
ready_for_review transition so marking a draft PR as ready bypasses the
workflow; update the pull_request.types array in
.github/workflows/pr-checklist.yml (the block where types: includes opened,
edited, synchronize, reopened) to also include ready_for_review so the workflow
triggers when a draft is marked ready_for_review.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Central YAML (base), Organization UI (inherited)

Review profile: CHILL

Plan: Enterprise

Run ID: 6f7dfcb7-6a46-4234-a680-ef35bc3fa63b

📥 Commits

Reviewing files that changed from the base of the PR and between c8ffcd5 and 7ce78ec.

📒 Files selected for processing (1)

• .github/workflows/pr-checklist.yml

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