Seed huggingface_hub.login at startup so spaces SDK picks up Pro tier

Extend diagnose_runtime: whoami + Pro tier check

Add diagnose_runtime endpoint to verify HF_TOKEN visibility in Space

Add Help tab to Gradio UI + source link

Upload-driven benchmark + CHANGELOG catch-up

run_benchmark_in_space: filter to *.input.* files (skip .expected.json snapshots)

Frontend: zip + multi-file uploads, progress with stage labels, chunk detail tab

TransformersClient stateless refactor + Smokes/Benchmark UI surfaces

Fix ZeroGPU state-loss in EmbeddingRetriever; add einops + smoke surfaces

Add agent-friendly docstring to parse_uploaded_document

Initial commit: zeroshotGPU MVP with full eval surface