fix: 整合验证修复9个代码缺口 - 历史限制3条、证书公开端点、题库默认DRAFT状态、Admin硬编码

server/src/assessment/assessment.controller.ts

@@ -18,6 +18,7 @@ import { map } from 'rxjs/operators';
 import { AssessmentService } from './assessment.service';
 import { ExportService } from './services/export.service';
 import { CombinedAuthGuard } from '../auth/combined-auth.guard';
+import { Public } from '../auth/public.decorator';
 import { ApiTags, ApiOperation, ApiResponse } from '@nestjs/swagger';
 
 @ApiTags('Assessment')
@@ -134,7 +135,7 @@ export class AssessmentController {
 
   @Get('certificate/verify/:certificateId')
   @ApiOperation({ summary: 'Verify certificate by ID (public)' })
-  @UseGuards()
+  @Public()
   async verifyCertificate(
     @Param('certificateId') certificateId: string,
   ) {
@@ -143,6 +144,7 @@ export class AssessmentController {
 
   @Get('certificate/public/:sessionId')
   @ApiOperation({ summary: 'Get public certificate info for verification' })
+  @Public()
   async getPublicCertificate(
     @Param('sessionId') sessionId: string,
   ) {