Link the ExtractArena interactive explainer from the Space and README

Fit hosted-backend payloads under the HF router's ~5MiB body cap

Add ExtractArena tab to the Space app

Force sdpa attention on CUDA to stop hunyuan-ocr OOMs

Guard against oversized image uploads OOMing the council

Convert svlm_council into the ZeroGPU Space app (Gradio + MCP)

Initial commit