Investigating CI Failures

When a PR has failing CI checks, always start by running the investigation script. Do not manually query the GitHub API or download artifacts by hand — the script handles all of that automatically.

Step 1: Run the Script

# Investigate the current branch's PR (no argument needed)
python3 repo_support/investigate_ci.py

# Investigate a specific PR by number
python3 repo_support/investigate_ci.py 2946

# Or by run ID directly
python3 repo_support/investigate_ci.py 23017249697