fix(流程图): 老提交重新评分后四项明细全显示「0 / 0」

老办法（四项打总分）的 prompt 只写了 "criteria_details":{}，模型换成 deepseek-flash
之后直接给 {"逻辑正确性": 32} 这样的裸数字，详情页读不到 score / max。prompt 里把
四项的形状写全，存之前按 { score, max, comment } 收好（缺满分按 40/30/20/10 补）；
0036 把线上已经存进去的 4 条改回来。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/api/src/db/0036_fix_flowchart_criteria_numbers.sql

@@ -0,0 +1,32 @@
+-- 流程图老办法（四项打总分）的明细，模型有时给成 {"逻辑正确性": 32, ...} 这样的裸数字，
+-- 提交详情读不到 score / max，四项全显示「0 / 0」。2026-10-19 重新评分老提交时线上撞上 4 条
+-- （模型换成 deepseek-flash 之后）。裸数字改成 { score, max, comment }，满分按 40 / 30 / 20 / 10；
+-- 本来就是对象的项原样不动。新评的由 flowchart/run.ts 的 normalizeCriteria 收好再存。
+UPDATE "flowchart_submission" AS target
+SET "ai_criteria_details" = fixed.details
+FROM (
+  SELECT f."id",
+    jsonb_object_agg(
+      e.key,
+      CASE
+        WHEN jsonb_typeof(e.value) = 'number' THEN jsonb_build_object(
+          'score', e.value,
+          'max', CASE e.key
+            WHEN '逻辑正确性' THEN 40
+            WHEN '完整性' THEN 30
+            WHEN '规范性' THEN 20
+            WHEN '清晰度' THEN 10
+            ELSE 100
+          END,
+          'comment', ''
+        )
+        ELSE e.value
+      END
+    ) AS details
+  FROM "flowchart_submission" f, jsonb_each(f."ai_criteria_details") e
+  WHERE NOT f."ai_criteria_details" ? 'version'
+    AND jsonb_typeof(f."ai_criteria_details") = 'object'
+  GROUP BY f."id"
+  HAVING bool_or(jsonb_typeof(e.value) = 'number')
+) AS fixed
+WHERE target."id" = fixed."id";

apps/api/src/db/meta/_journal.json

@@ -253,6 +253,13 @@
       "when": 1792130722120,
       "tag": "0035_recount_solved_metrics",
       "breakpoints": true
+    },
+    {
+      "idx": 36,
+      "version": "7",
+      "when": 1792415463343,
+      "tag": "0036_fix_flowchart_criteria_numbers",
+      "breakpoints": true
     }
   ]
 }

apps/api/src/flowchart/run.ts

@@ -163,11 +163,36 @@ function evaluationPrompt(problem: Problem) {
   return `你是专业的编程教学助手，负责评估学生的 Mermaid 流程图。
 评分：逻辑正确性40分、完整性30分、规范性20分、清晰度10分。
 不要评价系统生成的节点ID。feedback不超过100字；suggestions最多3条且只针对真实问题。
-返回纯 JSON：{"score":85,"grade":"A","feedback":"...","suggestions":"...","criteria_details":{}}。
+返回纯 JSON：{"score":85,"grade":"A","feedback":"...","suggestions":"...","criteria_details":{"逻辑正确性":{"score":34,"max":40,"comment":"..."},"完整性":{"score":26,"max":30,"comment":"..."},"规范性":{"score":17,"max":20,"comment":"..."},"清晰度":{"score":8,"max":10,"comment":"..."}}}。
 等级：S=90-100，A=80-89，B=70-79，C=0-69。
 题目：${problem.title}\n${problem.description.slice(0, 2000)}`
 }
 
+const CRITERIA_MAX: Record<string, number> = { 逻辑正确性: 40, 完整性: 30, 规范性: 20, 清晰度: 10 }
+
+/**
+ * 四项明细收成 `{ 项名: { score, max, comment } }`，提交详情和统计都按这个形状读。
+ * 原来 prompt 里只写了 `"criteria_details":{}`，模型有时直接给 `"逻辑正确性": 34`，
+ * 存进去页面上四项全是「0 / 0」（2026-10 重新评分老提交时撞上的）。缺 max 的按满分表补
+ */
+function normalizeCriteria(raw: unknown) {
+  return Object.fromEntries(
+    Object.entries(asRecord(raw)).map(([key, value]) => {
+      const item = asRecord(value)
+      const score = typeof value === "number" ? value : Number(item.score)
+      const max = Number(item.max)
+      return [
+        key,
+        {
+          score: Number.isFinite(score) ? score : 0,
+          max: Number.isFinite(max) && max > 0 ? max : (CRITERIA_MAX[key] ?? 100),
+          comment: typeof item.comment === "string" ? item.comment : "",
+        },
+      ]
+    }),
+  )
+}
+
 function parseEvaluation(value: string): Evaluation {
   const block = value.match(/```(?:json)?\s*([\s\S]*?)```/)?.[1]
   const json = block ?? value.match(/\{[\s\S]*\}/)?.[0]
@@ -181,7 +206,7 @@ function parseEvaluation(value: string): Evaluation {
     grade: gradeForScore(score),
     feedback: typeof data.feedback === "string" ? data.feedback : "",
     suggestions: typeof data.suggestions === "string" ? data.suggestions : "",
-    criteria: asRecord(data.criteria_details),
+    criteria: normalizeCriteria(data.criteria_details),
   }
 }