feat: 添加得分占比计算功能；优化时间格式化工具函数；更新考试记录和用户任务页面以显示得分占比；新增得分占比测试用例；修复时间解析逻辑

test/score-percentage.test.ts

@@ -0,0 +1,111 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { randomUUID } from 'node:crypto';
+
+process.env.NODE_ENV = 'test';
+process.env.DB_PATH = ':memory:';
+
+const jsonFetch = async (
+  baseUrl: string,
+  path: string,
+  options?: { method?: string; body?: unknown },
+) => {
+  const res = await fetch(`${baseUrl}${path}`, {
+    method: options?.method ?? 'GET',
+    headers: options?.body ? { 'Content-Type': 'application/json' } : undefined,
+    body: options?.body ? JSON.stringify(options.body) : undefined,
+  });
+
+  const text = await res.text();
+  let json: any = null;
+  try {
+    json = text ? JSON.parse(text) : null;
+  } catch {
+    json = null;
+  }
+  return { status: res.status, json, text };
+};
+
+test('得分占比=总得分/试卷总分；40%应判定为不及格', async () => {
+  const { initDatabase, run, get } = await import('../api/database');
+  await initDatabase();
+
+  const { app } = await import('../api/server');
+  const server = app.listen(0);
+
+  try {
+    const addr = server.address();
+    assert.ok(addr && typeof addr === 'object');
+    const baseUrl = `http://127.0.0.1:${addr.port}`;
+
+    const userId = randomUUID();
+
+    await run(`INSERT INTO users (id, name, phone, password) VALUES (?, ?, ?, ?)`, [
+      userId,
+      '测试用户',
+      '13900139001',
+      '',
+    ]);
+
+    // 5道单选题，每题5分，总分25；答对2题得10分，得分占比=40%
+    const questionIds: string[] = [];
+    for (let i = 0; i < 5; i++) {
+      const qid = randomUUID();
+      questionIds.push(qid);
+      await run(
+        `INSERT INTO questions (id, content, type, options, answer, analysis, score, category)
+         VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+        [
+          qid,
+          `题目${i + 1}`,
+          'single',
+          JSON.stringify(['A', 'B', 'C', 'D']),
+          'A',
+          '',
+          5,
+          '通用',
+        ],
+      );
+    }
+
+    const answers = questionIds.map((questionId, idx) => ({
+      questionId,
+      userAnswer: idx < 2 ? 'A' : 'B',
+      score: 0,
+      isCorrect: false,
+    }));
+
+    const submitRes = await jsonFetch(baseUrl, '/api/quiz/submit', {
+      method: 'POST',
+      body: { userId, answers },
+    });
+
+    assert.equal(submitRes.status, 200, submitRes.text);
+    assert.equal(submitRes.json?.success, true);
+    const recordId = submitRes.json?.data?.recordId;
+    assert.ok(recordId);
+
+    const detailRes = await jsonFetch(baseUrl, `/api/quiz/records/detail/${recordId}`);
+    assert.equal(detailRes.status, 200, detailRes.text);
+    assert.equal(detailRes.json?.success, true);
+
+    const record = detailRes.json?.data?.record;
+    assert.ok(record);
+    assert.equal(record.totalScore, 10);
+    assert.equal(record.correctCount, 2);
+    assert.equal(record.totalCount, 5);
+
+    assert.ok(typeof record.scorePercentage === 'number');
+    assert.ok(Math.abs(record.scorePercentage - 40) < 0.0001);
+    assert.equal(record.status, '不及格');
+
+    // 数据库里也应写入合理的score_percentage（避免旧逻辑200%）
+    const dbRow = await get(`SELECT score_percentage as scorePercentage, status FROM quiz_records WHERE id = ?`, [recordId]);
+    assert.ok(dbRow);
+    assert.ok(typeof dbRow.scorePercentage === 'number');
+    assert.ok(Math.abs(dbRow.scorePercentage - 40) < 0.0001);
+    assert.equal(dbRow.status, '不及格');
+  } finally {
+    server.close();
+  }
+});