fix: show full student summaries

app/scripts/smoke_test.js

@@ -119,6 +119,38 @@ assertEqual("纠错后排序仍使用显示记录", value("currentRecordOrder.jo
 vm.runInContext("updateCorrectionToolbar('测试提交按钮')", context);
 assertEqual("提交审核按钮文案", value("submitCorrectionsBtn.textContent"), "提交审核 1 条");
 
+vm.runInContext(
+  `
+const longSummaryBody = "完整课程小结内容".repeat(20);
+currentRecords = [
+  {
+    date: "2026.06.14",
+    weekday: "星期日",
+    time: "10:00-11:00",
+    student: "甲",
+    duration: "1小时0分",
+    duration_hours: 1,
+    teacher: "王老师",
+    subject: "英语",
+    _recordIndex: 0,
+    _recordKey: "summary-test",
+    summary_count: 1,
+    summaries: [{ title: "课程小结", body: longSummaryBody, teacher: "王老师", subject: "英语" }],
+  },
+];
+expandedSummaryRecords = new Set(["summary-test"]);
+collapsedTeacherGroups = new Set();
+const summaryHtml = renderGroupedRecords(currentRecords);
+if (!summaryHtml.includes(longSummaryBody)) {
+  throw new Error("课程小结展开后应直接显示完整正文");
+}
+if (summaryHtml.includes("展开全文") || summaryHtml.includes("summary-toggle") || summaryHtml.includes("summary-preview")) {
+  throw new Error("课程小结展开后不应再渲染展开全文按钮或预览裁切");
+}
+`,
+  context,
+);
+
 const adminElements = new Map();
 function adminElement(id) {
   if (!adminElements.has(id)) {