Markdown Diagram Renderer

This skill appears to do what it says: it finds diagram code blocks and renders them using local tools if available or by calling public rendering services. Before installing or running: (1) be aware that fallback rendering will send diagram source to third‑party services (mermaid.ink, plantuml.com) — do not include secrets or sensitive architecture details if you rely on online rendering; (2) if you want to avoid remote calls, install local renderers (mmdc, Graphviz, Java + plantuml.jar) and set PLANTUML_JAR appropriately; (3) the skill will execute local binaries (mmdc, java, graphviz) via subprocess — only use it in environments where you trust those binaries and the skill source; (4) there is no automated installer in the registry — run pip install -r script/requirements.txt yourself and consider testing on a copy of files (use -o) to avoid accidental overwrite. If you want extra assurance, review script/core.py and script/main.py locally or run the tool in an isolated environment first.