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

- Simplified speedLabel method in DirectorInfo.vue and SaleSection.vue to handle null values and translations more efficiently.
- Removed the watch property for branchId in DirectorInfo.vue as it was not needed.
- Cleaned up the code by eliminating redundant checks and improving readability.

Update translations in falukant.json files

- Removed unused keys and cleaned up the structure in both German and English translation files.
- Ensured that all necessary translations are still present while removing obsolete entries.

Refactor BranchView and PoliticsView components for improved performance and clarity

- Removed caching logic for product prices in BranchView.vue to simplify the loading process.
- Streamlined the loadCurrentPositions method in PoliticsView.vue by eliminating unnecessary character ID checks and logging.
- Enhanced the user experience by ensuring that the application submission process is clearer and more efficient.

Clean up MoneyHistoryView and FamilyView components

- Removed the graph section from MoneyHistoryView.vue to simplify the UI.
- Adjusted the mood display logic in FamilyView.vue to ensure proper translation handling.

frontend/src/components/falukant/SaleSection.vue

@@ -251,6 +251,13 @@
           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();
@@ -267,19 +274,6 @@
       }
     },
     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}`);
@@ -293,24 +287,25 @@
         }
       },
       async loadPricesForInventory() {
-        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 = [];
+        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);
           }
         }
       },