ata-validator

Errors are put in schema declaration order by an integer computed when the schema is compiled, not by walking each error's schemaPath at read time. The rank of a path is its pre-order position in the schema tree, which is exactly the order the old array-of-indexes comparison produced; the code generator writes that position into each error literal (_o, an internal field), the reader compares integers, and a list that already arrives in order is returned without sorting or allocating.

The Standard Schema bridge caches parsed issue paths per instancePath string (bounded, entries frozen).

Measured on the schema-benchmarks harness locally, before and after on the same machine: standard invalid 3.57 to 2.83 µs (21 percent less); every other row within noise. Raw error list of that schema, 15 errors: 1.88 to 1.50 µs; through the Standard Schema bridge 3.30 to 1.99 µs. Verdict paths are untouched.

richErrors: false keeps the v0.14 key set: the ordering field is dropped from that shape.