Tighten prompt_template_source.notes: explicit 5-tier classification per 2026-06-01 priority rules

metadata.json

@@ -47,7 +47,7 @@
       "prompt_template_source": {
         "origin": "official",
         "reference": "https://github.com/EvolvingLMMs-Lab/lmms-eval/blob/main/lmms_eval/tasks/mathvision/utils.py#L29-L42 (default mathvision query_prompt='Please first solve the problem step by step, then put your final answer or a single letter (if it is a multiple choice question) in one \\\\boxed{}.')",
-        "notes": "lmms-eval MathVision canonical eval prompt with chain-of-thought structure and boxed-answer formatting."
+        "notes": "Tier 4: lmms-eval MathVision canonical eval prompt with chain-of-thought structure and boxed-answer formatting."
       }
     }
   }