Seamless Carousel Photo Editor

100% browser-based — no backend, no server. Built with React 18, TypeScript, and Vite. The whole carousel is one wide "strip" of coordinates, so layouts span across slides. Deterministic seeded generation means any design reproduces exactly. Two renderers share one data model: live DOM preview and a Canvas exporter. Projects persist in IndexedDB (photos as blobs); designs share via a single URL.