Revert "Refactor DirectorInfo and SaleSection components to unify speedLabel logic and remove unnecessary watch properties"

This reverts commit 8c40144734.

frontend/src/components/falukant/SaleSection.vue

@@ -251,13 +251,6 @@
           return new Date(a.eta).getTime() - new Date(b.eta).getTime();
         });
       },
-        speedLabel(value) {
-          const key = value == null ? 'unknown' : String(value);
-          const tKey = `falukant.branch.transport.speed.${key}`;
-          const translated = this.$t(tKey);
-          if (!translated || translated === tKey) return value;
-          return translated;
-        },
     },
     async mounted() {
       await this.loadInventory();
@@ -274,6 +267,19 @@
       }
     },
     methods: {
+      speedLabel(value) {
+        if (value == null) return this.$t('falukant.branch.transport.speed.unknown') || '—';
+        if (typeof value === 'object') {
+          const k = value.tr ?? value.id ?? 'unknown';
+          const tKey = `falukant.branch.transport.speed.${k}`;
+          const t = this.$t(tKey);
+          return (t && t !== tKey) ? t : String(k);
+        }
+        const key = String(value);
+        const tKey = `falukant.branch.transport.speed.${key}`;
+        const translated = this.$t(tKey);
+        return (!translated || translated === tKey) ? key : translated;
+      },
       async loadInventory() {
         try {
           const response = await apiClient.get(`/api/falukant/inventory/${this.branchId}`);
@@ -287,25 +293,24 @@
         }
       },
       async loadPricesForInventory() {
-        for (const item of this.inventory) {
-          const itemKey = `${item.region.id}-${item.product.id}-${item.quality}`;
-          if (this.loadingPrices.has(itemKey)) continue;
-          this.loadingPrices.add(itemKey);
-          try {
-            // Aktueller Preis basierend auf sellCost
-            const currentPrice = item.product.sellCost || 0;
-            const { data } = await apiClient.get('/api/falukant/products/prices-in-cities', {
-              params: {
-                productId: item.product.id,
-                currentPrice: currentPrice
-              }
-            });
-            this.$set(item, 'betterPrices', data || []);
-          } catch (error) {
-            console.error(`Error loading prices for item ${itemKey}:`, error);
-            this.$set(item, 'betterPrices', []);
-          } finally {
-            this.loadingPrices.delete(itemKey);
+        if (this.inventory.length === 0) return;
+        const currentRegionId = this.inventory[0]?.region?.id ?? null;
+        const items = this.inventory.map(item => ({
+          productId: item.product.id,
+          currentPrice: item.product.sellCost || 0
+        }));
+        try {
+          const { data } = await apiClient.post('/api/falukant/products/prices-in-cities-batch', {
+            currentRegionId,
+            items
+          });
+          for (const item of this.inventory) {
+            item.betterPrices = data && data[item.product.id] ? data[item.product.id] : [];
+          }
+        } catch (error) {
+          console.error('Error loading prices for inventory:', error);
+          for (const item of this.inventory) {
+            item.betterPrices = [];
           }
         }
       },