fix(35-01): extend ItemWithCategory with image and currency fields (FIX-02)

- Add imageUrl, dominantColor, cropZoom, cropX, cropY, priceCurrency to interface
- Server already returns these fields via withImageUrls(); type was just incomplete

src/client/hooks/useItems.ts

@@ -40,6 +40,12 @@ interface ItemWithCategory {
 	updatedAt: string;
 	categoryName: string;
 	categoryIcon: string;
+	imageUrl: string | null;
+	dominantColor: string | null;
+	cropZoom: number | null;
+	cropX: number | null;
+	cropY: number | null;
+	priceCurrency: string | null;
 }
 
 export function useItems() {