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Support layered widths 3 through 9 in the opt-in lazy Full pipeline (LANCE_RQ_LAZY_FULL=1): stage sign-plane bounds, gather only the ex-plane rows the native heap can still need, and score survivors in probe order. Preserve native ordered results, distances, ties and pruning; introduce no fp32 refinement. Include task-based staging/gather progress, eager routing for predicted-dense probes, and whole-probe threshold publication.
Dependencies
Stacked directly on #9490.
Integrated Lance main
b3c8619886b9and the updated 3–9-bit layered prerequisites. Standalone benchmark/POC tools remain excluded.The lazy caller uses main's shared sub-index reader and retains query timing, including result materialization.
Validation
This PR tree passed formatting and full-workspace clippy (--all --tests --benches -- -D warnings, Rust 1.98.1, Linux x86_64). The integrated composition passed 670 BQ tests and 22 layered integration tests on x86_64, plus 22 layered and 111 lazy/resident integration tests on macOS arm64. Production and Rust test source equality was verified after the final dependency refresh; the only later source change adds Java test coverage.
No new performance measurement is claimed. CI is not awaited.
Tracking
OSS-2561