chore(root): write iyarc-prune agent report to job summary

[rashadjnizar]

Summary

The agent prompt instructs it to report results — including the "Still blocked" breakdown — in the job summary, but the workflow never wrote to $GITHUB_STEP_SUMMARY. The report was only visible by expanding the final step's logs, and disappears with log retention. This adds a Write agent report to job summary step that renders the agent's report as markdown, so tables (removed exclusions, "Still blocked") display properly, with run metadata in a collapsed <details>.

Ticket: HSM-429

[zahin-mohammad]

@claude

[github-actions]

Claude finished @zahin-mohammad's task —— View job

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Code Review Progress

• Analyze PR context and changes
• Review workflow file modifications
• Check job summary implementation
• Provide comprehensive feedback

Code Review

This PR adds a valuable improvement to the iyarc-prune workflow by implementing GitHub job summary output. The changes look solid overall with good attention to error handling and security practices.

✅ Positive Aspects

1. Addresses Real Need: Solves the issue of agent reports being buried in logs that disappear with retention
2. Robust Error Handling: Uses set -uo pipefail instead of set -e to ensure reporting failures don't break the job
3. Security Conscious:
   • Uses allowlist approach for metadata fields rather than del(.result)
   • Handles potential upstream schema changes gracefully
4. Good UX: Collapsible metadata section keeps the summary clean while providing debugging info
5. Proper Conditional Logic: Handles missing execution files and empty reports gracefully

🔍 Technical Implementation Review

JSON Processing (.github/workflows/iyarc-prune.yml:104-116):

• The jq pipeline correctly normalizes arrays and extracts text content
• Metadata extraction uses safe navigation with // empty
• Good use of with_entries(select(.value != null)) to clean up null values

Output Generation (.github/workflows/iyarc-prune.yml:118-138):

• Clear markdown structure with proper heading hierarchy
• Fallback messages provide helpful guidance when content is missing
• Metadata is appropriately hidden in collapsible section

Error Resilience (.github/workflows/iyarc-prune.yml:100-101):

• Comment explicitly explains why set -e is avoided
• 2>/dev/null redirects prevent jq errors from cluttering output

📝 Minor Suggestions

1. Line 119: Consider making the heading dynamic to reflect actual workflow name:

   echo "## ${{ github.workflow }} report"

2. Line 112-116: The jq command is quite complex. Consider adding a comment explaining the allowlist approach:

   # Extract only audited metadata fields (allowlist approach for security)
   META="$(printf '%s' "$EVENTS" | jq -S 'map(select(.type=="result"))[-1] // empty

✅ Security & Best Practices

• ✅ No secrets exposed in job summary
• ✅ Proper error handling prevents workflow failures
• ✅ Uses if: always() to ensure reporting happens even on failure
• ✅ Allowlist approach for metadata extraction is security-conscious

🎯 Overall Assessment

This is a well-implemented feature that significantly improves the visibility and auditability of the iyarc-prune agent reports. The code demonstrates good understanding of GitHub Actions, bash scripting best practices, and security considerations.

Recommendation: ✅ Approve - Ready to merge as-is. The minor suggestions above are optional enhancements, not blockers.

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Job run | Branch: iyarc-prune-job-summary