ColorTxt (彩读) is a cross-platform desktop ebook reader built with Electron, Vue 3, and Monaco Editor. It focuses on reading local text/ebook files (TXT, EPUB, PDF, MOBI, FB2, CHM) with an extensive feature set: AI-powered reading assistant (chat, RAG, mindmap, wordcloud, character card generation), multi-engine text-to-speech (Edge, MiniMax, DashScope, MiMo, Volcengine, Windows SAPI), dictionary lookup supporting multiple formats (StarDict, MDict, Babylon, DICT), a book source engine fully compatible with Legado (阅读) for searching and downloading web novels, WebDAV sync for cross-device backup, and deep customization of reading appearance (themes, fonts, line spacing, backgrounds, reading ruler, pomodoro timer). The architecture follows a standard Electron pattern: a main process handles I/O, AI, TTS, networking, and IPC, while separate renderer processes (main reader, find-book, stealth reader) are Vue 3 SPAs communicating via typed IPC through a preload bridge. The codebase is large and feature-rich, demonstrating solid engineering practices (composable patterns, shared type libraries, clean IPC design) but also carries maintenance complexity from the Legado compatibility layer, numerous third-party API integrations, and platform-specific hacks for stealth mode and native modules.