This repository implements an AI-agent skill that converts images, PDFs, and image-based PPT/PPTX files into fully editable PowerPoint (.pptx) documents. The system uses a deterministic CLI state machine (`editppt`) with a four-phase workflow: normalize input into per-page jobs, dispatch to subagents for page reconstruction, record page manifests, and finalize by rebuilding the PPTX from manifests. It integrates OCR (PaddleOCR or offline detector) for text bounding boxes, image generation/editing backends (built-in, OpenAI-compatible, or Codex OAuth), and LaTeX rendering for formulas. The output preserves native text boxes, shapes (including custom paths and polygons), tables, images, and speaker notes, with strict provenance tracking for all assets. The codebase is well-structured with clear separation of concerns, a manifest-driven assembly pattern, and comprehensive tests. However, the last commit date is anomalously in the future (2026-09-16), suggesting the repository may be abandoned or the timestamp is erroneous; combined with only 1 open issue and no recent activity, it is classified as stale. The technical drift is low as the code uses modern Python and standard libraries, but external dependencies (OCR, image APIs, LaTeX) may become incompatible over time.