What problem does it solve? When reviewing a branch before merge, it is hard to know exactly which files a specific author touched, especially when files were renamed by other contributors. This Skill audits authorship by comparing a branch against its upstream and producing a clear table of each author's contributions. ## Core Features & Use Cases - Exact Author Matching: Resolves the author's exact git identity from commit history before searching, avoiding false matches on similar names. - Rename Tracing: Builds a rename map across all branch commits and walks it transitively, so contributions survive multi-hop file moves. - Merge-Diff Classification: Labels each file as DIRECT or VIA_RENAME and reports line stats, covering only files that will actually land in the merge. - Use Case: Before merging a long-lived feature branch, run this to audit what a specific contributor changed and generate a review-ready markdown table with per-file +/- stats. ## Quick Start Ask the agent to find every file that a named author contributed to on your current branch compared to main, tracing renames, and return a markdown table with status, file path, and line changes.