distilling-prs

Use when triaging, categorizing, or summarizing PR changes to decide where human attention should go. Triggers: 'summarize this PR', 'what changed in PR #X', 'triage PR', 'which files need review', 'PR overview', 'categorize changes', or pasting a PR URL. NOT for: judging code quality or producing findings on a branch — unspecified-scope branch review such as 'review this branch' or 'code review' DEFAULTS to…