Refactor SaleSection component: Introduce methods section to organize component logic, enhancing readability and maintainability. This change improves the structure of the component by clearly separating computed properties and methods.

frontend/src/components/falukant/SaleSection.vue

@@ -251,6 +251,8 @@
           return new Date(a.eta).getTime() - new Date(b.eta).getTime();
         });
       },
+    },
+    methods: {
         speedLabel(value) {
           if (value == null) return this.$t('falukant.branch.transport.speed.unknown') || '—';
           if (typeof value === 'object') {
@@ -264,7 +266,6 @@
           const translated = this.$t(tKey);
           return (!translated || translated === tKey) ? key : translated;
         },
-    },
     async mounted() {
       await this.loadInventory();
       await this.loadTransports();