What problem does it solve? Reading unfamiliar code, PRs, or concepts is slow and error-prone, and PR descriptions are often outdated. This Skill reads the actual implementation to verify claims, then explains what the code does and why it is structured that way, so you gain an accurate mental model instead of a stale summary. ## Core Features & Use Cases - Verified Explanations: Reads real code via gh pr diff, git show, and Grep before asserting anything, so explanations reflect the current implementation rather than the PR description. - Two Granularity Modes: Defaults to a high-level overview using Mermaid diagrams and tables, and switches to line-by-line walkthroughs with code excerpts when requested. - Concrete Anchors: Points to key locations with file:line references and, for large targets like full PRs, provides a reading order and a question-to-location index. - Use Case: Ask it to explain PR #3002, and it fetches the diff, reads the surrounding code, and returns a structured explanation with sequence diagrams, a summary table, and pointers to the exact lines that matter. ## Quick Start Ask the assistant to explain what PR 3002 does and why it is implemented that way.