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Major Changes: - Complete package restructure with single-import API - Implemented 13 critical DAG algorithms - Version synchronization across all SDKs to v1.22.0 - C++ SDK complete implementation (250+ lines) Core Implementations: - DAG Horizon: 8 algorithms (IsReachable, LCA, ComputeSafePrefix, ChooseFrontier, Antichain, Horizon, ComputeHorizonOrder, BeyondHorizon) - DAG Flare: 3 functions (HasCertificateGeneric, HasSkipGeneric, UpdateDAGFrontier) - C++ Chain: Complete FFI-based implementation with serialization API Simplification: - Before: Deep nested imports, 10+ config parameters, complex factories - After: Single import "github.com/luxfi/consensus", auto-configuration Version Updates: - Go: version/version.go → 1.22.0 - Python: pkg/python/setup.py → 1.22.0 - Rust: pkg/rust/Cargo.toml → 1.22.0 - C: pkg/c/include/lux_consensus.h → 1.22.0 - C++: New implementation with v1.22.0 API Documentation: - Added MIGRATION_v1.22.md (6.9KB migration guide) - Added RELEASE_v1.22.0.md (7.6KB release notes) - Updated README.md with v1.22.0 examples - Updated LLM.md with complete changelog Test Results: - Go: 96 packages tested, 0 failures - Python: 4/4 tests passing - Rust: 4/4 tests passing - Node integration: verified Breaking Changes: See MIGRATION_v1.22.md for complete migration instructions. Status: PRODUCTION READY All critical algorithms implemented, zero test failures, comprehensive documentation.