takoyune/NarrativeOS — reverse-engineered prompt

Build me a local desktop style web app for collecting and turning light novels into clean EPUB books. I want to run it on my own computer with Python, open it in the browser, and manage novels by folder, volume, and chapter.

The main flow should be simple. I can paste a chapter URL and have it scraped into clean Markdown, or paste raw HTML if a site makes normal scraping annoying. I also want batch importing for multiple chapter links. Give me a split view editor with Markdown on one side and a live styled preview on the other, plus easy chapter create, rename, delete, and auto save with a warning if I try to leave with unsaved changes.

I need metadata editing too, like title, author, artist, translator, genres, cover image, and preferred title language, with smart carry over from one volume to the next. Then one click should compile everything into a polished EPUB with proper table of contents, image handling, and special novel styling like scene breaks, thought boxes, status windows, and full page images. Look up current docs online if you need to.