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>

routes/api/v1/finance.php

@@ -183,6 +183,7 @@
     Route::get('/note-receivables', [DailyReportController::class, 'noteReceivables'])->name('v1.daily-report.note-receivables');
     Route::get('/daily-accounts', [DailyReportController::class, 'dailyAccounts'])->name('v1.daily-report.daily-accounts');
     Route::get('/summary', [DailyReportController::class, 'summary'])->name('v1.daily-report.summary');
+    Route::get('/export', [DailyReportController::class, 'export'])->name('v1.daily-report.export');
 });
 
 // Comprehensive Analysis API (종합 분석 보고서)