fix: use Zod 4 native toJSONSchema for schema conversion#56
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zod-to-json-schema returns empty schemas with Zod 4.x, causing standardSchemaToFormSchema and inferFormSchemaFromConfig tests to fail. Zod 4 exposes toJSONSchema() on schema objects; prefer that when available, falling back to zod-to-json-schema for Zod 3.
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Dependabot bumped zod from 3.25.76 to 4.4.3 (#37). The
zod-to-json-schemalibrary returns empty schemas with Zod 4, causing 2 test failures on main:standard-schema.test.ts-standardSchemaToFormSchemareturns empty fieldsinfer-from-config.test.ts-inferFormSchemaFromConfigreturns empty fields for Zod schemasZod 4 exposes a native
toJSONSchema()method on schema objects. This PR uses that when available, falling back tozod-to-json-schemafor Zod 3 compatibility.All 311 tests pass locally.