drawio

Create and edit draw.io diagrams in XML format. Use when the user wants to create flowcharts, architecture diagrams, sequence diagrams, or any visual diagrams. Handles XML structure, styling, fonts (Noto Sans JP), arrows, connectors, and PNG export.

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skills-repo-maintenance

Add or update skills in a skills repository for Codex and/or Claude Code. Use when creating new skills, packaging .skill files for Codex, or converting a skill into a Claude Code plugin (marketplace.json + plugin.json).

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