Audit Paper Book

A book companion goes stale the moment its source paper revises. This skill walks the gap between the paper and the book, classifies each drift item by mechanical-vs-substantive, and produces a single report. With --apply, the mechanical drift (new bib entries, new figures) is fixed in place; substantive drift always requires user judgement.

For NEW books, use /init-paper-book. This skill never creates a book that doesn't already exist.

Hard rules

1. Never edit chapter prose without explicit user approval. Mechanical fixes touch references.bib and figures/* only. Section content drift is reported, not fixed.
2. Numeric changes always block. If the paper changed a result number (mean gap, accuracy, theorem constant), the book reports it but does NOT auto-update. The user verifies the new number is intentional.
3. Atlas slug match. The book's slug must equal the atlas topic filename. Drift in either is a /init-project-research-level concern, not this skill's job.
4. Read-only is the default. --apply is opt-in; without it, this skill produces a report and changes nothing.

When to use

• Camera-ready version of a submitted paper (post-acceptance revisions)
• After a major revision in response to reviewer comments
• When you've added or removed figures from the paper
• When you've added or replaced bib entries