PR Implement Skill Fork-based implementation for open source contributions with mandatory isolation check. Overview Execute a contribution plan with fork isolation. Ensures PRs are clean and focused by running isolation checks before and during implementation. Input : Plan artifact from (after ) or repo URL When to Use : - Implementing a planned OSS contribution - Need isolation enforcement for clean PRs - After completing and When NOT to Use : - Internal project work (use ) - Haven't planned yet (run then first) --- Workflow --- Phase -1: Prior Work Check (BLOCKING) | Finding | Action | |---…