Show GN: Marksmith - VS Code/Windsurf용 마크다운 생산성 확장

Marksmith brings productivity-focused features to markdown editing in VS Code and Windsurf, solving tangible pain points like content conversion from web/spreadsheets and editor-preview synchronization. The extension exemplifies thoughtful architectural design, with incremental DOM updates and smart message batching ensuring performance on large documents. For technical writers, developers, and markdown-heavy workflows, this open-source tool meaningfully reduces context-switching and dependency on external conversion services.