feat: import podkladov - jednotkova cena v tvare 'jednotkova cena 8,56 EUR/l', gramaz oddelena z nazvu

Mnozstvo sa odoberie z konca nazvu v letaku (aj 'od 225 g do 250 g',
'3 x 50 g 1 bal.'); co je pred mnozstvom zo stlpca Mnozstvo, ostava v nazve.
Overene na 432 riadkoch podkladov.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/components/editor/ProductImportModal.tsx

@@ -306,7 +306,10 @@ export const ProductImportModal: React.FC<ImportModalProps> = ({
                         )}
                       </span>
                       <div className="flex-1 min-w-0">
-                        <p className="text-xs font-bold text-gray-900 truncate">{p.title}</p>
+                        <p className="text-xs text-gray-900 truncate">
+                          <span className="font-bold">{p.title}</span>
+                          {p.quantity && <span className="ml-1 rounded bg-gray-100 px-1 text-gray-600">{p.quantity}</span>}
+                        </p>
                         <p className="text-[11px] text-gray-500 truncate">
                           EAN {p.ean}
                           {p.unitPrice && ` · ${p.unitPrice}`}