Refactor price loading logic in RevenueSection and SaleSection components: Replace for-loops with Promise.all for concurrent API requests, improving performance and responsiveness. This change enhances the handling of loading states and ensures better management of price data retrieval.

frontend/src/components/falukant/SaleSection.vue

@@ -294,12 +294,11 @@
         }
       },
       async loadPricesForInventory() {
-        for (const item of this.inventory) {
+        const requests = this.inventory.map(async (item) => {
           const itemKey = `${item.region.id}-${item.product.id}-${item.quality}`;
-          if (this.loadingPrices.has(itemKey)) continue;
+          if (this.loadingPrices.has(itemKey)) return;
           this.loadingPrices.add(itemKey);
           try {
-            // Aktueller Preis basierend auf sellCost
             const currentPrice = item.product.sellCost || 0;
             const { data } = await apiClient.get('/api/falukant/products/prices-in-cities', {
               params: {
@@ -314,7 +313,8 @@
           } finally {
             this.loadingPrices.delete(itemKey);
           }
-        }
+        });
+        await Promise.all(requests);
       },
       getCityPriceClass(branchType) {
         if (branchType === 'store') return 'city-price-green';