ftnilsson

- Use shadertype canvasitem for 2D sprites, UI, and screen-space effects - Use shadertype spatial for 3D surface materials - Use shadertype particles for custom GPU particle behavior - Add rendermode unshaded to spatial shaders that implement custom lighting — default is PBR

Always measure before optimising. Use Lighthouse for lab data and the web-vitals library or Chrome UX Report for real-user field data.