[q] Use generateFooterWithMessages in add_comment to respect custom footer config

[github-actions]

Problem

The add_comment.cjs safe output handler was using a hardcoded footer instead of the generateFooterWithMessages function. This prevented custom footer configurations specified in workflow frontmatter from being applied to comments.

Investigation (from live data)

Workflow Run Analysis: #22037921224

• Workflow: smoke-temporary-id.md
• Issue: Comment on [smoke-temporary-id] Test Parent: Temporary ID Validation #15935 showed default footer instead of custom footer
• Root Cause: Line 491 in add_comment.cjs used hardcoded footer: > AI generated by [workflow](url)

Expected Footer (from workflow config):

messages:
  footer: "> 🧪 *Temporary ID smoke test by [{workflow_name}]({run_url})*"
````

**Actual Footer** (from live comment):
````
> AI generated by [Smoke Temporary ID](https://github.com/github/gh-aw/actions/runs/22037921224)

Changes Made

actions/setup/js/add_comment.cjs

• Before: Used hardcoded footer > AI generated by [workflow](url)
• After: Uses generateFooterWithMessages() to respect custom footer configuration
• Added workflow source and triggering context parameters
• Removed duplicate getMissingInfoSections() call (already included in generateFooterWithMessages)

actions/setup/js/add_comment.test.cjs

• Updated test assertions from "AI generated by" to "Generated by"
• Tests now reflect the default footer template used by generateFooterWithMessages

Expected Improvements

• ✅ Custom footer messages will now appear in comments
• ✅ Consistency between create_issue and add_comment footer behavior
• ✅ Missing tools/data sections still included via generateFooterWithMessages
• ✅ XML markers still added for traceability

Validation

All JavaScript files formatted successfully with make fmt-cjs.

References

• Log analysis: /tmp/gh-aw/aw-mcp/logs/run-22037921224/

• Run ID investigated: 22037921224

• Triggering issue: [smoke-temporary-id] Sub-Issue 2: Test Different ID Length #15936 (pelikhan's investigation request)

• Fixes [smoke-temporary-id] Sub-Issue 2: Test Different ID Length #15936

AI generated by Q

• expires on Feb 17, 2026, 5:39 PM UTC