Audit remediation: XSS fix, pinned loaders, engine bug fixes, honest claims, head_dim KV, hackathon tags

Vision/diffusion compute-roofline speed (FPS + s/image); fine-tune VRAM validation+sweep; flag-gated eager model load

Multi-goal checks (union buying advice), fix vision/audio quality bars, honest niche fallback

Speed up explainer: prebuilt Mamba kernels (transformers 5.8 + kernels hub), tighter answer budget

Deploy FitCheck: engine + Nemotron model brick on ZeroGPU

Deploy FitCheck: engine + Nemotron model brick on ZeroGPU