- 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
- Replace absolute aitbc.bubuit.net URLs with relative paths in documentation pages
- Update markdown documentation links from /main/ to /master/ branch
- Add system flow diagram references to component documentation pages
- Remove redundant "Also available in Markdown" notices from HTML docs
- Update Font Awesome CDN link in index.html
- Simplify quick links section and remove unused tutorial/video guide plac
- Add Prometheus metrics for marketplace API throughput and error rates with new dashboard panels
- Implement confidential transaction models with encryption support and access control
- Add key management system with registration, rotation, and audit logging
- Create services and registry routers for service discovery and management
- Integrate ZK proof generation for privacy-preserving receipts
- Add metrics instru
