docs: rendering notes; tune heavy_ball example

speed up software rendering: no MSAA/shadows, 25fps, thread-capped llvmpipe

real app: import torch before mujoco (OSMesa/LLVM segfault fix)

diagnostic v3: import order + real rollout

diagnostic v2

diagnostic app

Upload folder using huggingface_hub

Upload folder using huggingface_hub

Clarify cookie offset metric in report

Fix Gradio 6 theme/css location, cookie push+HUD logic, tighten ZeroGPU duration

Mr. Balance ZeroGPU demo

initial commit