feat: [dashboard-ceo] CEO 대시보드 섹션별 API 및 일일보고서 엑셀 추가

- DashboardCeoController/Service: 6개 섹션 API 신규 (매출/매입/생산/미출고/시공/근태)
- DailyReportController/Service: 엑셀 다운로드 API 추가 (GET /daily-report/export)
- 라우트: dashboard 하위 6개 + daily-report/export 엔드포인트 추가

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Http/Controllers/Api/V1/DailyReportController.php

@@ -2,11 +2,14 @@
 
 namespace App\Http\Controllers\Api\V1;
 
+use App\Exports\DailyReportExport;
 use App\Helpers\ApiResponse;
 use App\Http\Controllers\Controller;
 use App\Services\DailyReportService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
+use Maatwebsite\Excel\Facades\Excel;
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
 
 /**
  * 일일 보고서 컨트롤러
@@ -58,4 +61,19 @@ public function summary(Request $request): JsonResponse
             return $this->service->summary($params);
         }, __('message.fetched'));
     }
+
+    /**
+     * 일일 보고서 엑셀 다운로드
+     */
+    public function export(Request $request): BinaryFileResponse
+    {
+        $params = $request->validate([
+            'date' => 'nullable|date',
+        ]);
+
+        $reportData = $this->service->exportData($params);
+        $filename = '일일일보_'.$reportData['date'].'.xlsx';
+
+        return Excel::download(new DailyReportExport($reportData), $filename);
+    }
 }