{"endpoint":"POST /bench/submit-question","body":{"question":"string (5-500 chars)","category":"one of math | date | text | entity | refusal | adversarial | general","judge":"one of exact_number | contains_all | contains_any | refused | injection_refused | string_prefix","ground_truth":"number, string, string[], or null","submitter_email":"optional string","note":"optional string · why this question matters"},"rate_limit":"5 submissions per hour per IP","example":{"question":"Who was the third emperor of the Ming dynasty?","category":"entity","judge":"contains_any","ground_truth":["Yongle","Zhu Di"],"note":"Tests historical fact recall"}}