BREAKING CHANGE: Package paths have been reorganized for clarity
## Major Changes
### Package Structure
- Collapsed engine/core → engine (removed unnecessary nesting)
- Moved core/types → types (top-level types package)
- Added root facade for single-import experience
- Removed redundant factory.go
### SDK Improvements
All SDKs now provide single-import interfaces:
- Go: import "github.com/luxfi/consensus"
- Python: import lux_consensus as consensus
- Rust: use lux_consensus::*
### Documentation
- Added comprehensive introduction and architecture docs
- Created AI/ML integration guide for researchers
- Added research section with papers and experiments
- Improved sidebar organization and discoverability
### Benefits
- Shallow, obvious import paths
- One responsibility per package
- DRY, composable, orthogonal design
- Idiomatic patterns for each language
- Consistent API across all SDKs
This refactor provides a clean, intuitive developer experience where
one import is enough and things work one way only.
