Move the scalar policy that selects the optimal parser for long-distance
matching into Rust. The C implementation continues to own match-state and
compressor dispatch, but the strategy threshold is now defined and tested at
the Rust seam.
Test Plan:
- ulimit -v 41943040; CARGO_BUILD_JOBS=1 cargo +nightly fmt --manifest-path rust/Cargo.toml -- --check
- ulimit -v 41943040; CARGO_BUILD_JOBS=1 cargo clippy --manifest-path rust/Cargo.toml --all-targets -- -D warnings
- ulimit -v 41943040; CARGO_BUILD_JOBS=1 cargo test --manifest-path rust/Cargo.toml --all-targets (775 passed)
- ulimit -v 41943040; CARGO_BUILD_JOBS=1 cargo clippy --manifest-path rust/cli/Cargo.toml --all-targets -- -D warnings
- ulimit -v 41943040; CARGO_BUILD_JOBS=1 cargo test --manifest-path rust/cli/Cargo.toml --all-targets (179 passed)
- ulimit -v 41943040; make -j1
- ulimit -v 41943040; make -j1 -C tests test (all tests completed successfully)