feat: implement US-2 - create print route with barcode data fetching

- Add Next.js print route at /[locale]/print/[year]/[month]
- Implement fetchBarcodeDataForPrint function with user authentication
- Create PrintPreview component with basic table layout
- Add proper 404 handling with not-found.tsx
- Fix barcode image display with flexible data URL handling
- Filter and sort bills with barcode data for consistent display

🤖 Generated with [Claude Code](https://claude.ai/code)

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

app/[locale]/print/[year]/[month]/not-found.tsx

@@ -0,0 +1,6 @@
+import { NotFoundPage } from '@/app/ui/NotFoundPage';
+
+const PrintPageNotFound = () =>
+<NotFoundPage title="404 Print Page Not Found" description="Could not find the requested print preview page." />;
+
+export default PrintPageNotFound;

app/[locale]/print/[year]/[month]/page.tsx

@@ -0,0 +1,46 @@
+import { fetchBarcodeDataForPrint } from '@/app/lib/actions/printActions';
+import { notFound } from 'next/navigation';
+import { PrintPreview } from '@/app/ui/PrintPreview';
+
+interface PrintPageProps {
+  params: { 
+    year: string; 
+    month: string; 
+    locale: string;
+  };
+}
+
+export default async function PrintPage({ params }: PrintPageProps) {
+  const year = parseInt(params.year);
+  const month = parseInt(params.month);
+
+  // Validate year and month parameters
+  if (isNaN(year) || isNaN(month) || month < 1 || month > 12) {
+    notFound();
+  }
+
+  let printData;
+  
+  try {
+    printData = await fetchBarcodeDataForPrint(year, month);
+  } catch (error) {
+    console.error('Error fetching print data:', error);
+    notFound();
+  }
+
+  // If no barcode data found, show empty state
+  if (!printData || printData.length === 0) {
+    return (
+      <div className="min-h-screen flex items-center justify-center">
+        <div className="text-center">
+          <h1 className="text-2xl font-bold mb-4">No Barcode Data Found</h1>
+          <p className="text-gray-600">
+            No bills with 2D barcodes found for {year}-{month.toString().padStart(2, '0')}
+          </p>
+        </div>
+      </div>
+    );
+  }
+
+  return <PrintPreview data={printData} year={year} month={month} />;
+}