vnotex/vnote ? reverse-engineered prompt

Build me a pleasant desktop note taking app in C++ with Qt that works on Windows, macOS, and Linux.

I want it to feel more like a full note platform than just a text editor, so make it easy to organize notes and write in Markdown with a really nice editing experience. The app should open fast, let me create and browse notes easily, and make writing and reading feel smooth and clean. I’d like the basics to be polished, with a simple modern interface, good keyboard shortcuts, and reliable file handling.

If it helps, look up current docs online for Qt or Markdown rendering details. Please set up the project so it can be built and run from the repo, and make sure it follows the existing codebase structure and style.