Summary

z.iso.time().toJSONSchema() was not including the format field in its output, contrary to the documentation which states:

z.iso.time(); // => { type: "string", format: "time" }

Changes

Removed the special-case logic in json-schema-processors.ts that was explicitly deleting the format field for time schemas. The original code had this comment:

// JSON Schema format: "time" requires a full time with offset or Z
// z.iso.time() does not include timezone information, so format: "time" should never be used

While technically JSON Schema's time format expects timezone info, the pattern regex already ensures correct validation for Zod's local time format. The format field serves as a hint for tooling and should match the documented behavior.

Before

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "string",
  "pattern": "^(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?$"
}

After

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "string",
  "format": "time",
  "pattern": "^(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?$"
}

Closes #5673

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