d2phap/ImageGlass ? reverse-engineered prompt

Build me a fast, modern image viewer called ImageGlass that works on Windows, macOS, and Linux.

I want it to open photos instantly, let me browse through folders smoothly, and handle a wide range of formats without extra setup, including WEBP, GIF, SVG, AVIF, JXL, HEIC, HDR, and raw images. It should feel clean and lightweight, but still be good for everyday use and for people who work with lots of images. Please make the experience focused on quick viewing, easy navigation, and reliable rendering, with a polished interface that feels native on each platform.

If you need to look up current docs or best practices for the platforms, go ahead and do that. Keep it open source friendly and make sure it’s ready to build and run from the repo with clear setup steps.