PR Research Skill Systematic exploration of upstream repositories before contributing. Overview Research an external codebase to understand how to contribute effectively. This is the FIRST step before planning or implementing an open source contribution. When to Use : - Before contributing to an external repository - Starting a new open source contribution - Evaluating whether to contribute to a project When NOT to Use : - Researching your own codebase (use ) - Already familiar with the project's guidelines --- Workflow --- Phase -1: Prior Work Check (BLOCKING) CRITICAL : Before ANY research,…