refactor: UniversalListPage externalIsLoading 지원 및 스켈레톤 개선

- UniversalListPage에 externalIsLoading prop 추가
- CardTransactionDetailClient DevFill 자동입력 기능 추가
- 여러 컴포넌트 로딩 상태 처리 개선
- skeleton 컴포넌트 확장

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/material/ReceivingManagement/InspectionCreate.tsx

@@ -15,7 +15,7 @@ import { useRouter } from 'next/navigation';
 import { Calendar } from 'lucide-react';
 import { IntegratedDetailTemplate } from '@/components/templates/IntegratedDetailTemplate';
 import { materialInspectionCreateConfig } from './inspectionConfig';
-import { ContentLoadingSpinner } from '@/components/ui/loading-spinner';
+import { ContentSkeleton } from '@/components/ui/skeleton';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
@@ -195,7 +195,7 @@ export function InspectionCreate({ id }: Props) {
             <Label className="text-sm font-medium">검사 대상 선택</Label>
             <div className="space-y-2 border rounded-lg p-2 bg-white min-h-[200px]">
               {isLoadingTargets ? (
-                <ContentLoadingSpinner text="검사 대상을 불러오는 중..." />
+                <ContentSkeleton type="list" rows={3} />
               ) : inspectionTargets.length === 0 ? (
                 <div className="text-center py-8 text-muted-foreground text-sm">
                   검사 대기 중인 입고 건이 없습니다.