Strip the large project spec from HF Space tree

smoke_embedding: drop eager probe (incompatible with ZeroGPU CUDA emulation)

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

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

Add ZeroGPU integration

Initial commit: zeroshotGPU MVP with full eval surface