feat: support daily practice exports

scripts/api-integration-test.js

@@ -2814,6 +2814,41 @@ async function testTenantContentAdmin() {
   const exportedQuestionWithAnswer = paperExport.export?.questions?.find(item => item.id === question.item.id);
   assert.equal(exportedQuestionWithAnswer?.answerText, '4', 'paper export should include answers when requested');
 
+  const dailyPracticeExport = await request('/api/tenant-content/exports/questions', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: {
+      scopeType: 'collection',
+      scopeId: collection.item.id,
+      format: 'json',
+      exportType: 'daily_practice',
+      includeAnswers: true,
+      includeExplanations: false,
+      limit: 99,
+      options: {
+        title: '第 1 期每日一练',
+        issue: '每日一练 第 1 期',
+        date: '2026-06-29',
+        theme: 'ink',
+        cardFormat: '1:1',
+        brand: {
+          name: '恭学教育',
+          english: 'GONGXUE EDU',
+          slogan: '专注高职升本',
+          ctaLine: '每日一练 · 稳步上岸',
+        },
+      },
+    },
+  });
+  assert.equal(dailyPracticeExport.export?.exportType, 'daily_practice', 'daily practice export should use daily_practice type');
+  assert.equal(dailyPracticeExport.export?.summary?.issue, '每日一练 第 1 期', 'daily practice export should expose issue metadata');
+  assert.equal(dailyPracticeExport.export?.summary?.cardCount, 1, 'daily practice export should expose card count');
+  assert.equal(dailyPracticeExport.export?.dailyPractice?.slots?.some(item => item.slot === 4 && item.kind === 'center'), true, 'daily practice export should include center slot metadata');
+  assert.ok(
+    dailyPracticeExport.export?.questions?.length <= 8,
+    'daily practice export should cap question count for nine-grid material',
+  );
+
   const pdfExportJob = await request('/api/tenant-content/exports/questions', {
     userId: TENANT_ADMIN_USER_ID,
     method: 'POST',