- Remove Python version matrix (3.10, 3.11, 3.12), run only on 3.11
- Add aitbc-crypto package installation
- Add coordinator dependencies (fastapi, uvicorn, sqlmodel, etc.)
- Add pytest-asyncio for async test support
- Remove conditional coverage steps (always run on 3.11 now)
- Add GPU fields (model, memory, count, CUDA version, price, region) to MarketplaceOffer model
- Create new marketplace_gpu router for GPU-specific operations
- Update offer sync to populate GPU fields from miner capabilities
- Move GPU attributes from generic attributes dict to dedicated fields
- Update MarketplaceOfferView schema with GPU fields
- Expand CLI README with comprehensive documentation and
