MEO - Markdown editor for VS Code that doesn't feel like a hack

I built MEO because writing markdown in VS Code has always been painful. Raw syntax in one tab, broken preview in another, no toolbar, no way to just write. MEO adds a live/source toggle, floating formatting menu, toolbar for headings/tables/tasks/code/links, full-screen Mermaid diagrams, a contents sidebar, and optional auto-save. All inside VS Code. No context switching. Built for devs who write READMEs, docs, and PRDs alongside code and want the editor to stay out of the way.