Add GitHub repo link to info panel

iframe: show launch splash instead of running slow WebGL sim

Show WebGL banner with open-in-new-tab link for WebGPU

Throttle viz to every 4th frame on webgl; async backprop readback

CPU fallback: throttle to 20fps, show banner with direct link for GPU

Fix backend: probe GPU adapter before trying webgpu; explicitly fall through to webgl

Fix: fall back to WebGL (not CPU) when WebGPU is blocked in iframe

Default to CoFrNet; reorder info panel to lead with CoFrNet

Default to CoFrNet on startup

Deploy neuron-runner: RL platformer with live neural net visualization

initial commit