## Summary
Adds an automated workflow that detects potential merge conflicts
between open PRs, helping contributors coordinate proactively.
**Example output:** [See comment on PR
#12057](https://github.com/Significant-Gravitas/AutoGPT/pull/12057#issuecomment-3897330632)
## How it works
1. **Triggered on PR events** — runs when a PR is opened, pushed to, or
reopened
2. **Compares against all open PRs** targeting the same base branch
3. **Detects overlaps** at multiple levels:
- File overlap (same files modified)
- Line overlap (same line ranges modified)
- Actual merge conflicts (attempts real merges)
4. **Posts a comment** on the PR with findings
## Features
- Full file paths with common prefix extraction for readability
- Conflict size (number of conflict regions + lines affected)
- Conflict types (content, added, deleted, modified/deleted, etc.)
- Last-updated timestamps for each PR
- Risk categorization (conflict, medium, low)
- Ignores noise files (openapi.json, lock files)
- Updates existing comment on subsequent pushes (no spam)
- Filters out PRs older than 14 days
- Clone-once optimization for fast merge testing (~48s for 19 PRs)
## Files
- `.github/scripts/detect_overlaps.py` — main detection script
- `.github/workflows/pr-overlap-check.yml` — workflow definition
