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tiennm99
933adf70c9
Comments across the tree justified the code by pointing at a Rust implementation that is no longer in the repository, citing files and line numbers (config.rs:132, schema.rs:26-54, reader.rs:42) that cannot be opened, plus crates and datasets that are equally gone. A reader could not check any of it. Every invariant those comments carried is kept and restated so it stands on its own: the bytewise sort that decides which row survives a duplicate exam number, the literal U+0300..U+036F range that must match the site's toAscii, the trailing space in "SINH ", the BIFF and shared-string corrections, the VACUUM-after-COMMIT rule, the deploy-from-main guard. The reader's contract is now anchored to the frozen oracle in parser/testdata, which still exists and is still checked, rather than to the tool that originally produced it. TestDDLMatchesRust becomes TestDDLIsFrozen: it compares against a copy of the DDL inside the test and never read schema.rs, so both the name and the failure message were misleading. ToAscii no longer claims the d-replacement must precede lowercasing. Both cases map to 'd' and ToLower runs last, so the order has no effect.