P0-1/P0-2/P1-1: dimensions form + E2E tests + PDF export

P0-1 Backend: dimensions column on template entity + validation
P0-1 Frontend: dimensions edit UI in TemplateManager
P0-2: routeAfterGrading unit tests (10 cases), service spec fix + certificate tests, jest-e2e.json
P1-1: proper PDF generation with embedded CJK font via pdf-lib low-level API

server/src/assessment/services/export.service.ts

@@ -6,6 +6,7 @@ import { AssessmentSession } from '../entities/assessment-session.entity';
 import { AssessmentQuestion } from '../entities/assessment-question.entity';
 import { AssessmentAnswer } from '../entities/assessment-answer.entity';
 import { AssessmentCertificate } from '../entities/assessment-certificate.entity';
+import { generateAssessmentPdf } from './pdf-generator';
 
 @Injectable()
 export class ExportService {
@@ -155,73 +156,55 @@ export class ExportService {
       where: { questionId: In(questions.map((q) => q.id)) },
     });
 
-    const content = this.generatePdfContent(session, questions, answers, certificate);
-    return Buffer.from(content, 'utf-8');
-  }
-
-  private generatePdfContent(
-    session: AssessmentSession,
-    questions: AssessmentQuestion[],
-    answers: AssessmentAnswer[],
-    certificate: AssessmentCertificate | null,
-  ): string {
-    const lines: string[] = [];
-
-    lines.push('='.repeat(60));
-    lines.push('              人才评估报告');
-    lines.push('='.repeat(60));
-    lines.push('');
-
-    lines.push(`评估ID: ${session.id}`);
-    lines.push(`用户: ${session.user?.displayName || session.user?.username || session.userId}`);
-    lines.push(`状态: ${session.status === 'COMPLETED' ? '已完成' : '进行中'}`);
-    lines.push(`最终分数: ${session.finalScore || '-'}`);
-    lines.push(`评估模板: ${session.template?.name || session.templateJson?.name || '-'}`);
-    lines.push(`评估时间: ${session.startedAt ? new Date(session.startedAt).toLocaleString() : '-'}`);
-    lines.push('');
-
-    if (certificate) {
-      lines.push('-'.repeat(60));
-      lines.push('证书信息');
-      lines.push('-'.repeat(60));
-      lines.push(`等级: ${certificate.level}`);
-      lines.push(`总分: ${certificate.totalScore}`);
-      lines.push(`是否通过: ${certificate.passed ? '是' : '否'}`);
-      lines.push(`颁发时间: ${certificate.issuedAt ? new Date(certificate.issuedAt).toLocaleString() : '-'}`);
-      lines.push('');
-    }
-
-    lines.push('-'.repeat(60));
-    lines.push('题目详情');
-    lines.push('-'.repeat(60));
-
     const answerMap = new Map(answers.map((a) => [a.questionId, a]));
 
+    const detailLines: string[] = [];
     for (let i = 0; i < questions.length; i++) {
       const q = questions[i];
       const a = answerMap.get(q.id);
-      lines.push('');
-      lines.push(`第${i + 1}题:`);
-      lines.push(`  题目: ${q.questionText || '-'}`);
-      lines.push(`  用户回答: ${a?.userAnswer || '-'}`);
-      lines.push(`  得分: ${a?.score ?? '-'}`);
-      lines.push(`  反馈: ${a?.feedback || '-'}`);
-      lines.push(`  追问: ${a?.isFollowUp ? '是' : '否'}`);
+      detailLines.push(`Q${i + 1}: ${q.questionText || '-'}`);
+      detailLines.push(`  A: ${a?.userAnswer || '-'}`);
+      detailLines.push(`  Score: ${a?.score ?? '-'}`);
+      detailLines.push(`  Feedback: ${a?.feedback || '-'}`);
     }
 
-    if (session.finalReport) {
-      lines.push('');
-      lines.push('-'.repeat(60));
-      lines.push('综合评估报告');
-      lines.push('-'.repeat(60));
-      lines.push(session.finalReport);
+    const certificateLines: string[] = [];
+    if (certificate) {
+      certificateLines.push(`Level: ${certificate.level}`);
+      certificateLines.push(`Total Score: ${certificate.totalScore}`);
+      certificateLines.push(`Passed: ${certificate.passed ? 'Yes' : 'No'}`);
+      certificateLines.push(`Issued: ${certificate.issuedAt ? new Date(certificate.issuedAt).toLocaleString() : '-'}`);
     }
 
-    lines.push('');
-    lines.push('='.repeat(60));
-    lines.push('                    报告结束');
-    lines.push('='.repeat(60));
+    const userName = session.user?.displayName || session.user?.username || session.userId;
 
-    return lines.join('\n');
+    return generateAssessmentPdf({
+      title: 'Assessment Report',
+      subtitle: `${userName} — ${new Date(session.createdAt).toLocaleDateString()}`,
+      sections: [
+        {
+          title: 'Summary',
+          lines: [
+            `Session: ${session.id}`,
+            `User: ${userName}`,
+            `Status: ${session.status}`,
+            `Score: ${session.finalScore ?? '-'}`,
+            `Template: ${session.template?.name || session.templateJson?.name || '-'}`,
+          ],
+        },
+        ...(certificate ? [{
+          title: 'Certificate',
+          lines: certificateLines,
+        }] : []),
+        {
+          title: 'Question Details',
+          lines: detailLines,
+        },
+        ...(session.finalReport ? [{
+          title: 'Final Report',
+          lines: [session.finalReport],
+        }] : []),
+      ],
+    });
   }
 }