kman1898/LED-Raster-Designer ? reverse-engineered prompt

Build me a desktop style web app for designing LED video wall layouts for live events, concerts, and installations.

It should let me create a project with multiple canvases, each one acting like its own stage or processor setup, then place LED screen blocks on a workspace and move them around visually. I want views for the pixel map, cabinet numbering, show look, data routing, and power planning, with changes reflected across the right views. Let me add, duplicate, reorder, rename, lock, hide, and group screens, and also add text and image layers. It should support selecting panels in bulk, marking panels as blank or half tile, snapping things into place, zooming and panning, undo and redo, and simple keyboard shortcuts.

Please make it save and remember settings like panel sizes, colors, sidebar widths, and canvas layout. Also include a clean professional interface, local network access so it can be opened in a browser, and export production documentation from the finished layout. If you need to check current docs or best practices, look them up online.