Paste box goes live: fine-tuned spec parser fills the form from messy text

Speed predictions with receipts: bandwidth roofline, real-runs chart, honest provenance

Add einops for the Mamba hub kernel

Fix kernels version clash: pin to transformers' declared range

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

Deploy FitCheck: engine + Nemotron model brick on ZeroGPU

Deploy FitCheck UI brick