dj-nuo/nuo-stems — reverse-engineered prompt

Build me a documentation site for NUO STEMS, the tool that turns existing MP3 and WAV songs into STEM files for Traktor Pro. I want it to feel like a real product docs site, with a clear intro for new users, guides for how STEM files work, and simple explanations of the four parts, drums, bass, other, and vocals. Please include separate docs areas for version 3 and version 4, plus a blog section and changelog pages.

Keep the writing approachable for DJs and music creators, not just developers. Add pages that explain the basic workflow, what the AI part is doing at a high level, and how the final .stem.m4a file is bundled for Traktor. It should be easy to browse, search, and navigate, with a polished home page and version switching.

Use the existing docs content in the repo as the source of truth, and organize everything cleanly inside the docs site. If anything is missing, look up current docs online and fill in sensible gaps without inventing major features.