🚀 Features

• HTML file preview: Added direct preview support for .html and .htm files, including common static document content such as headings, paragraphs, links, images, details sections, and tables. ✨ Improvements
• Workspace file handling: HTML files now appear in the workspace and can be opened through the file picker or drag-and-drop while still respecting the normal workspace filter. 🐛 Bug Fixes
• Markdown-only tools stay scoped: HTML files are no longer treated as Markdown for diagnostics, formatting, or document export actions, reducing misleading messages for preview-only documents. 🔧 System
• Preview stability: Expanded automated coverage around document previews and renderer behavior to improve release stability.