version: "1.0.2" name: audit-paper-book description: "Use when you need to detect drift between an existing paper-book companion and a revised version of its source paper, then sync the mechanical pieces (new bib entries, new/changed figures) and report the substantive drift (renamed sections, changed numbers, new theorems, new contributions) for the user to triage. Counterpart to /init-paper-book. Read-only by default; --apply flag opts in to mechanical fixes." allowed-tools: Read, Write, Edit, Bash, Glob, Grep argument-hint: "<slug> [--apply] [--dry-run]"

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.
5. Accessibility floor. The book must remain readable by someone with an undergraduate degree in a quantitative field (linear algebra, probability, basic optimisation/statistics — not necessarily Bayesian methods or domain-specific machinery). Concretely:

• Every acronym must be expanded at first use within each chapter (e.g. "expected hypervolume improvement (EHVI)").
• Every display equation gets a one-line plain reading within 2 sentences.
• No jargon-on-jargon sentences (≥3 specialised terms without inline definition).
• Intuition before formal definition.

The audit runs an accessibility check on every chapter (see Phase 2) and reports violations alongside other drift. Violations are reported in the accessibility drift bucket (see Phase 3), never auto-fixed. The user decides whether to revise prose or accept the violation.

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
• Before sharing the book URL externally — sanity check that it still matches the paper

When NOT to use

• The book doesn't exist yet (/init-paper-book)
• The paper hasn't actually changed (no point)
• You want a full re-write, not a sync (delete the book + /init-paper-book is faster)

Inputs accepted

/audit-paper-book <slug>              # report only, no writes (default)
/audit-paper-book <slug> --apply      # apply mechanical fixes (bib + figures); report substantive drift
/audit-paper-book <slug> --dry-run    # alias for default; explicit no-write

Pre-flight (block-on-fail)

SLUG="<resolved-slug>"
 
# 1. Book must exist in vault
[[ -d ~/Research-Vault/books/"$SLUG" ]] || die "No book at vault. Use /init-paper-book."
 
# 2. Registry entry must exist
grep -q "^${SLUG}:" ~/Research-Vault/books/index.yaml \
    || die "${SLUG} not in books/index.yaml. Add a registry entry first."
 
# 3. Atlas topic + project_path must resolve.
#    Hard Rule 4 (from /init-paper-book): book slug MUST equal atlas topic
#    filename. The registry's `atlas_topic:` field is the source of truth — its
#    leaf must match the book slug exactly. Drift here is an existential
#    failure; the book and atlas are no longer the same artefact.
ATLAS_TOPIC_REF=$(awk -v slug="$SLUG" '
    $0 ~ "^"slug":" {in_block=1; next}
    in_block && /^[a-z]/ {in_block=0}
    in_block && /^[[:space:]]+atlas_topic:/ {gsub(/[",'\'']/, ""); print $2; exit}
' ~/Research-Vault/books/index.yaml)
ATLAS_TOPIC_LEAF="${ATLAS_TOPIC_REF##*/}"
[[ "$ATLAS_TOPIC_LEAF" == "$SLUG" ]] \
    || die "SLUG DRIFT: book '${SLUG}' points at atlas topic '${ATLAS_TOPIC_LEAF}'. Rename one side so they match (Hard Rule 4). See /init-paper-book SKILL.md."
 
ATLAS_TOPIC=$(find ~/Research-Vault/atlas -name "${SLUG}.md" -type f | head -1)
[[ -n "$ATLAS_TOPIC" ]] \
    || die "No atlas topic file at ~/Research-Vault/atlas/*/${SLUG}.md. Either rename the book to match an existing atlas topic, or create the missing topic via /init-project-research."
PROJECT_PATH=$(grep -E "^project_path:" "$ATLAS_TOPIC" | cut -d' ' -f2- | tr -d "'\"")
RR=$(cat ~/.config/task-mgmt/research-root)
[[ -d "$RR/$PROJECT_PATH" ]] || die "project_path in atlas does not resolve."
 
# 3a. Project-path leaf should also match the slug (warn, don't block — some
#     projects have been renamed historically and only the book + atlas leaf
#     are required to match).
PROJECT_LEAF=$(basename "$PROJECT_PATH")
[[ "$PROJECT_LEAF" == "$SLUG" ]] \
    || warn "PROJECT-DIR DRIFT: project_path leaf '${PROJECT_LEAF}' differs from book slug '${SLUG}'. Not a hard violation but worth aligning if the book is being actively maintained."
 
# 4. Paper tex + bib must exist
PAPER_DIR=$(ls -d "$RR/$PROJECT_PATH"/paper-* 2>/dev/null | head -1)
PAPER_TEX="$PAPER_DIR/paper/main.tex"; [[ -f "$PAPER_TEX" ]] || PAPER_TEX="$PAPER_DIR/backup/main.tex"
PAPER_BIB=$(find "$PAPER_DIR" -maxdepth 3 -name "*.bib" | head -1)
[[ -f "$PAPER_TEX" ]] || die "No main.tex in paper dir."
[[ -f "$PAPER_BIB" ]] || warn "No bib in paper dir."

Phases

Phase 1: Diff inventory    (compare paper assets to book vault)
Phase 2: Accessibility     (acronyms, equation-prose pairing, jargon density)
Phase 3: Classify          (mechanical / numeric / structural / accessibility / new-content)
Phase 4: Apply or report   (--apply: mechanical fixes; otherwise report-only)
Phase 5: Verify            (atlas reload + chapter smoke test if --apply ran)
Phase 6: Rebuild PDF       (mystmd → patched xelatex; soft-fail, --apply only)

Phase 1: Diff inventory

See `references/phase-1-diff-inventory.md` for detailed diff protocols (bibliography, figures, numeric drift, section structure, Overleaf-link transitions, masthead format drift, citation-URL drift).

Phase 2: Accessibility check

See `references/phase-2-accessibility.md` for detailed accessibility floor checks (acronym expansion, equation-prose pairing, jargon density, sentence length). This phase always runs (regardless of --apply).

Deterministic implementation — scripts/batch_audit.py

Phase 1 + Phase 2's deterministic checks are implemented in scripts/batch_audit.py. It reads the book registry, resolves each book's paper_tex via the atlas topic's project_path, and produces a per-book report at ~/Research-Vault/books/<slug>/.audit-report-<date>.md.

# Audit all 9 books
~/Task-Management/packages/atlas-workspace/.venv/bin/python \
    ~/.claude/skills/audit-paper-book/scripts/batch_audit.py
 
# Audit one book
~/Task-Management/packages/atlas-workspace/.venv/bin/python \
    ~/.claude/skills/audit-paper-book/scripts/batch_audit.py <slug>

What the script gets right:

• Bib drift is computed from \cite{} keys in main.tex (and any \input{}-expanded section files), not from a guessed .bib filename. Avoids the common "wrong scratch bib" false positive.
• Numeric drift normalises Unicode ± ↔ LaTeX \pm, % ↔ \%, leading-zero variants (.91 ↔ 0.91), and whitespace around ± before declaring a mismatch. Also skips tokens preceded by §, Section, Eq., Fig., Table (those are cross-references, not numeric claims).
• Structural drift parses paper section numbering by walking \section{} / \subsection{} linearly (handles \appendix reset). Extracts §X.Y refs from book chapters and flags any that don't resolve.
• Accessibility accepts both Full Form (ACRONYM) and ACRONYM (Full Form) expansion forms, and skips all-caps tokens that only appear inside markdown table rows (column headers).

What still needs human judgement:

• Numeric drift hits may still include formatting edge cases (e.g. paper uses $\mathbf{2.82 \pm 1.4}$ vs book bare-text version).
• Accessibility allow-list is global; per-domain acronyms (e.g. MOO, MOEA, RVEA, SBX for evolutionary-algorithm books) may need extension. Edit ACRONYM_ALLOW at the top of the script.
• Semantic claim-scope check (paper §X.Y says something the book misstates) is not implemented here — that's a Phase 3.5-style LLM sub-agent call, not a regex pass.

Phase 3: Classify

Each drift item lands in one of six buckets:

Overleaf-link is mechanical because the rule is deterministic: status ∈ accepted-set → remove; status in-flight + link in atlas → ensure present; URL changed → propagate. No editorial judgement.

Format-convention items are mechanical because the transformations are deterministic: blockquote masthead → definition-list (preserving field values), body H1 → strip the line. They never touch claims or numbers, only structural markup.

Phase 4: Apply (only with --apply) or report

See `references/phase-4-apply-logic.md` for apply logic (bib copy, figure replacement, masthead updates, format-convention migrations). Write the audit report to ~/Research-Vault/books/<slug>/.audit-report-YYYY-MM-DD.md so the user has a record of what was applied + what's still pending.

Phase 5: Verify (if --apply ran OR --visual-check passed in)

See `references/phase-5-verify-smoke-tests.md` for HTTP smoke-test and mandatory Playwright visual verification logic.

Phase 6: Rebuild PDF companion (soft-fail; --apply only)

See `references/phase-6-pdf-rebuild.md`. Runs bash ~/.claude/skills/init-paper-book/scripts/build-book-pdf.sh <slug> if --apply was passed and Phase 4 actually changed chapter files. Skips silently if mystmd is not on PATH or myst.yml is missing (no audit-time file creation beyond the build pipeline's own bootstrap). Warns on build error.

Report format

See `references/report-format-template.md` for canonical audit report structure (summary table, mechanical fixes, drift buckets, next actions).

Anti-patterns

• Auto-applying numeric changes. If a number changed, the user must decide whether the book's old explanation still applies. Auto-update silently corrupts the book.
• Auto-renaming chapters. Chapter renames cascade through the registry, atlas, and any external links. Always user-triaged.
• Skipping the report when applying. Even if --apply succeeds, the report logs what was changed (audit trail).

Logging

Append outcome to ~/.claude/ecc/skill-outcomes.jsonl:

mkdir -p ~/.claude/ecc && echo '{"skill":"audit-paper-book","timestamp":"'"$(date -u +%Y-%m-%dT%H:%M:%SZ)"'","outcome":"success","session":"'"${CLAUDE_SESSION_ID:-}"'","project":"'"$(basename "$PWD")"'","note":""}' >> ~/.claude/ecc/skill-outcomes.jsonl