pptx-reference-deck-analysis

# PPTX Reference Deck Analysis Inspect a reference deck as design evidence. This skill never copies, clones, or mutates a source deck. ## Contract Implement required extraction on demand with a small task-local `python-pptx` script. Capture only the information required for the new deck: - compact prompt context: slide count and size, text summaries, shape counts, styles, brand signals, template use, and layout rhythm; - full extraction: `summary`, slides, and read-only `layout_tree` evidence; - folder diagnostics: one result per deck plus a manifest; - style-master analysis: colors, fonts, size distribution, master/layout use, and flow patterns; - derived template catalog: zero-based source indices, layout roles, usable regions, placeholders, visual structures, and constraints. ## Rules - Keep the source deck read-only and independently author every target-slide coordinate. - Use the bundled OOXML utilities only for raw themes, relationships, notes, comments, animations, media, masters, or layouts that high-level extraction cannot expose. - Record inspected parts and parsing exceptions in the analysis manifest. - Do not use extracted content, fonts, images, or proprietary assets in a generated deck without explicit permission and license evidence. ## OOXML package inspection Install `defusedxml` from `requirements.txt` before using the bundled utilities. 1. Run `scripts/inspect.py <deck.pptx>` for a compact JSON report of slide order, text, theme tokens, relationships, notes, comments, animations, and media. 2. Run `scripts/validate_package.py <deck.pptx> --output <report.json>` for malformed XML, broken internal relationships, content-type gaps, duplicate layout links, and orphaned parts. 3. Run `scripts/unpack.py <deck.pptx> <output-dir>` only when raw-package evidence is necessary. 4. Resolve relationship targets relative to the `.rels` owner; never infer slide order from filenames. ### Safety - Never modify a supplied deck or blindly copy package parts into a new deck. - Run the scripts from a trusted workspace; they reject path traversal, symlinks, oversized members, and archive bombs. - Parse untrusted XML with `defusedxml`; do not enable entity expansion, DTD loading, or network access. - Treat theme colors as tokens unless fully resolved against the color scheme. See `references/reference-deck-analysis.md` for output shapes, `references/reference-deck-analysis-patterns.md` for documentation-only patterns, and `references/ooxml-parsing.md` for package part maps.