A comprehensive guide for building VS Code extensions from zero to Marketplace publication. Covers scaffolding with Yeoman, manifest structure, command registration, TreeView and Webview patterns, and packaging with vsce. Includes specific guidance on extension host boundaries, managing generated sections with START/END markers, and centralizing notifications with configurable modes (sound, silent toast, status bar). The troubleshooting tables and done criteria are practical. References are organized by topic but written in mixed English and Japanese, which might slow you down if you're not bilingual. Best suited for developers building their first extension or debugging activation and packaging issues rather than those already deep in complex API work.
npx skills add https://github.com/aktsmm/agent-skills --skill vscode-extension-guide