Add reusable spool price notice above table

app/page.tsx

@@ -205,6 +205,18 @@ export default function Home() {
           })()}
         />
 
+        {/* Reusable Spool Price Notice */}
+        <div className="mb-6 p-4 bg-blue-50 dark:bg-blue-900/20 border border-blue-200 dark:border-blue-800 rounded-lg">
+          <div className="flex items-center justify-center gap-2">
+            <svg className="w-5 h-5 text-blue-600 dark:text-blue-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
+            </svg>
+            <span className="text-blue-800 dark:text-blue-200 font-medium">
+              Cena višekratne špulne: 499 RSD
+            </span>
+          </div>
+        </div>
+
         <FilamentTableV2 
           key={resetKey}
           filaments={filaments}