ah damn, sorry about that- hopefully you were able to play it here.
to answer your Q- its in Tauri (a Rust based desktop wrapper) and Vite (frontend bundler), with the game itself written in TypeScript. Tauri uses the OS's native WebView instead of bundling Chromium...
i should make a Linux build using WebKitGTK instead of WebView2.
and once more just to be upfront as above in the description, AI wrote this i am like architect and ringmaster of the vibe coding circus!