feat(WEB): Vercel 배포 대응 및 타입 안정성 개선

- puppeteer → puppeteer-core + @sparticuz/chromium 전환 (Vercel 서버리스 호환)
- PDF 생성 API 로컬/Vercel 환경 분기 처리
- next.config.ts: ignoreBuildErrors false로 전환
- WorkOrder items에 orderNodeId/orderNodeName 필드 추가
- 결재선 데이터에 name/dept 필드 추가
- OrderSalesDetailView 타입 캐스팅 안전하게 수정
- vercel.json 설정 추가

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

src/components/orders/OrderSalesDetailView.tsx

@@ -133,16 +133,16 @@ function OrderNodeCard({ node, depth = 0 }: { node: OrderNode; depth?: number })
           )}
           <MapPin className="h-4 w-4 text-blue-500" />
           <span className="font-semibold text-sm">{node.name}</span>
-          {options.product_name && (
+          {options.product_name ? (
             <span className="text-xs text-muted-foreground">
-              ({options.product_name as string})
+              ({String(options.product_name)})
             </span>
-          )}
-          {(options.open_width || options.open_height) && (
+          ) : null}
+          {(options.open_width || options.open_height) ? (
             <span className="text-xs text-muted-foreground">
-              {options.open_width as string}x{options.open_height as string}mm
+              {String(options.open_width ?? '')}x{String(options.open_height ?? '')}mm
             </span>
-          )}
+          ) : null}
         </div>
         <div className="flex items-center gap-3">
           <BadgeSm className={statusConfig.className}>