Ensure all comment-triggered workflows return meaningful completion comments

[Copilot]

Comment-triggered workflows should acknowledge invocation and report completion status. This PR ensures all seven comment-triggered workflows provide consistent acknowledgment and completion feedback.

Changes

1. Added completion comment to cmake-build workflow

• Added build-complete job to cmake-build.yaml that posts completion status when triggered by @phlexbot build
  • Only runs on issue_comment events (uses always() to run regardless of build outcome)
  • Reports success/failure with emoji indicators and links to workflow run

build-complete:
  needs: [pre-check, build]
  if: >
    always() &&
    github.event_name == 'issue_comment' &&
    needs.pre-check.result == 'success'
  steps:
    - name: Comment on build completion
      uses: thollander/actions-comment-pull-request@24bffb9b452ba05a4f3f77933840a6a841d1b32b
      with:
        message: |
          Build and test workflow completed.
          
          **Result:** ${{ needs.build.result == 'success' && '✅ All builds and tests passed.' || '❌ Some builds or tests failed.' }}
          
          See the [workflow run](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}) for detailed results.

2. Fixed markdown-fix workflow to ensure reliable completion comments

• Switched from using the DavidAnson/markdownlint-cli2-action to directly invoking markdownlint-cli2
• The third-party action was operating in a different directory context, preventing the handle-fix-commit action from properly detecting file changes via git status
• Now uses the same pattern as other fix workflows (direct tool invocation with explicit working-directory)

- name: Set up Node.js
  uses: actions/setup-node@42a6b3698c7ed2d0a0c63ba202543c60838be1e7
  with:
    node-version: '20'

- name: Install markdownlint-cli2
  run: npm install -g markdownlint-cli2

- name: Run markdownlint-cli2 fix
  working-directory: ${{ env.local_checkout_path }}
  run: |
    echo "Fixing Markdown format with markdownlint-cli2..."
    markdownlint-cli2 --fix "**/*.md" "!**/CHANGELOG.md" || true

Result

All seven comment-triggered workflows now provide consistent behavior:

• ✅ Acknowledge invocation with "eyes" emoji (via get-pr-info action)
• ✅ Post meaningful completion comments with clear status indicators
• ✅ Use consistent patterns (direct tool invocation with explicit working-directory for fix workflows)

Workflows verified:

• clang-format-fix - Uses handle-fix-commit for completion comments
• cmake-format-fix - Uses handle-fix-commit for completion comments
• jsonnet-format-fix - Uses handle-fix-commit for completion comments
• python-fix - Uses handle-fix-commit for completion comments
• markdown-fix - FIXED: Now runs markdownlint-cli2 directly to ensure reliable completion comments
• clang-tidy-fix - Uses handle-fix-commit for completion comments
• cmake-build - NEW: Now posts a completion comment with build/test results

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Ensure all comment-triggered workflows return meaningful results as comments</issue_title>
<issue_description></issue_description>

<agent_instructions>Please examine/enhance all workflows currently invocable by PR comment to ensure that they acknowledge invocation via "eyes" emoji, and give a meaningful comment upon completion. Aim for consistency in message form/detail provided across workflows in similar situations.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@greenc-FNAL I believe most comment-triggered workflows do this now where appropriate, with the possible exception of `@phlexbot markdown-fix`.

• Fixes Ensure all comment-triggered workflows return meaningful results as comments #66

---

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[greenc-FNAL]

@copilot Are you sure markdown-fix produces a comment on "no changes required?" I seem to remember running this on a recent PR and getting no comment after "eyes" acknowledgment.

[Copilot]

@copilot Are you sure markdown-fix produces a comment on "no changes required?" I seem to remember running this on a recent PR and getting no comment after "eyes" acknowledgment.

You're correct. I investigated and found that markdown-fix was using the DavidAnson/markdownlint-cli2-action which may have been operating in a different directory context, preventing the handle-fix-commit action from detecting changes properly via git status.

I've fixed this in commit 9cb3280 by switching to directly invoking markdownlint-cli2 (similar to how python-fix runs ruff), which ensures consistent behavior and reliable completion comments.

[greenc-FNAL]

@phlexbot format

[github-actions]

No automatic markdownlint fixes were necessary.

[github-actions]

No automatic cmake-format fixes were necessary.

[github-actions]

No automatic jsonnetfmt fixes were necessary.

[github-actions]

No automatic clang-format fixes were necessary.

[Copilot]

Pull request overview

This PR updates comment-triggered GitHub Actions workflows to provide clearer user feedback by ensuring markdown-fix reliably produces fix commits/comments and cmake-build posts an explicit completion comment for @phlexbot build.

Changes:

• Reworked markdown-fix to run markdownlint-cli2 directly in the checked-out PR directory to ensure handle-fix-commit can detect and commit changes reliably.
• Added a build-complete job to cmake-build to comment the overall build/test outcome back on the PR when triggered via PR comment.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
.github/workflows/markdown-fix.yaml	Replaces the markdownlint composite action with explicit Node setup + markdownlint-cli2 --fix run in the checkout directory.
.github/workflows/cmake-build.yaml	Adds a post-build job that comments success/failure (and links the run) back to the PR for comment-triggered builds.