Update Unicode data to 18.0 - #477
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dfrg
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Sep 17, 2026
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Update the built-in Unicode data to 18.0 and add Jurchen, Proto-Cuneiform, and Seal script constants to the Rust and C APIs. Route the new scripts through USE, regenerate the Unicode and shaping tables and C headers, and adapt the shared-generator wrapper to HarfRust's current module layout.
Add regression coverage for the new scripts' Unicode properties and C API tag round trips.
Validation passed:
cargo fmt --all -- --checkcargo test --workspace --quietcargo test --workspace --features icu --quietcargo clippy --all-features --all-targets --quiet -- -D warningscargo build -p harfrust --no-default-features --features libm --quietcargo +1.85 build --quiet