Fix: Use HF_TOKEN secret for dataset contributions

Add community dataset contribution feature

Fix dataloader for small datasets - no drop_last, handle empty val

Fix mask type (convert to bool) and handle CPU fallback

Lower default to 100 players (70 legit + 30 cheaters)

Fix gradio version compatibility - upgrade to 5.x

Update for ZeroGPU with @spaces.GPU decorator

Initial MANIFOLD upload - CS2 cheat detection training

initial commit