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- Add Hamming variant to DistanceMetric, parser, and lance_vector_search - Add hamming_distance/similarity UDFs for FixedSizeBinary(2048) columns - Add binary vector extraction (FixedSizeBinaryArray) to vector_ops - Create ndarray_bridge.rs: BitVec↔Fingerprint zero-copy bridges with 4-tier SIMD dispatch (VPOPCNTDQ → AVX-512BW → AVX2 → scalar) - Create columnar.rs: Lance Arrow schemas for nodes (3 planes), edges (NARS truth), and stroke-packed fingerprints for cascade - Create cascade_ops.rs: CascadeScanConfig, hamming predicate → cascade translation, selectivity estimation - Wire semiring HammingMin/SimilarityMax to SIMD-dispatched popcount - Add BitVec::as_bytes/from_bytes for Arrow FixedSizeBinary interop - Produce .claude/FALKORDB_ANALYSIS.md: comprehensive FalkorDB architecture analysis (GraphBLAS pipeline, delta matrices, property storage) - All 720 tests pass, clippy clean https://claude.ai/code/session_01Dg6MsYU71FitYV2bB59bE3
…e pushdown - VersionedGraph: commit_encounter_round, at_version, diff, tag, graph_seal_check backed by three Lance datasets (nodes, edges, fingerprints) with ACID snapshots - GraphSealStatus: Wisdom (stable) vs Staunen (diverged) across versions - GraphDiff: new_nodes, modified_nodes, new_edges between version pairs - Storage backends: local/s3/azure/gcs via URI-based constructors - Cost estimation: band-based selectivity (Foveal 0.1% → Reject 100%) - Predicate pushdown: HammingPredicate detection, PushdownAnalysis with cascade vs full-scan strategy selection - ScanStrategy: automatic cascade selection when selectivity < 5% and rows > 1000 - Fix Python bindings for Hamming DistanceMetric variant 757 tests passing, clippy clean. https://claude.ai/code/session_01Dg6MsYU71FitYV2bB59bE3
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