This boots the real gpui renderer (the same one the native deos cockpit
draws with) on the gpui_web backend — wasm32 + a WebGPU canvas —
driving the same in-browser verified executor. Every affordance you click
fires a real cap-gated turn through the verified executor, in this tab, no server.
If you see this text and no cockpit, your browser may lack WebGPU (needed by gpui's wgpu renderer). Try a recent Chrome/Edge, or Firefox/Safari with WebGPU enabled. The canvas replaces this once it paints.