feat: Excel export of all projects for full-access admins

Co-authored-by: Cursor <cursoragent@cursor.com>

src/export/export.controller.ts

@@ -0,0 +1,25 @@
+import { Controller, Get, Res, UseGuards } from '@nestjs/common';
+import type { Response } from 'express';
+import { JwtAuthGuard } from '../auth/jwt-auth.guard';
+import { FullAccessGuard } from '../auth/full-access.guard';
+import { ExportService } from './export.service';
+
+@Controller('export')
+@UseGuards(JwtAuthGuard, FullAccessGuard)
+export class ExportController {
+  constructor(private readonly exportService: ExportService) {}
+
+  @Get('projects.xlsx')
+  async projectsXlsx(@Res() res: Response) {
+    const { buffer, filename } = await this.exportService.buildWorkbook();
+    res.setHeader(
+      'Content-Type',
+      'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+    );
+    res.setHeader(
+      'Content-Disposition',
+      `attachment; filename="${filename}"; filename*=UTF-8''${encodeURIComponent(filename)}`,
+    );
+    res.send(buffer);
+  }
+}