fix: 禁用路段方向选择器，确保用户无法修改方向设置

src/components/card/route-edit-card.vue

@@ -74,7 +74,11 @@ const route = computed<MapRouteInfo | null>(() => {
           <a-typography-text>{{ $t('路段方向') }}:</a-typography-text>
         </a-col>
         <a-col flex="auto">
-          <a-select :value="route.direction || 1" @change="editor.updateRoute(id, { direction: <-1 | 1>$event })">
+          <a-select
+            :value="route.direction || 1"
+            @change="editor.updateRoute(id, { direction: <-1 | 1>$event })"
+            disabled
+          >
             <a-select-option :value="1">{{ editor.getRouteLabel(id, 1) }}</a-select-option>
             <a-select-option :value="-1">{{ editor.getRouteLabel(id, -1) }}</a-select-option>
           </a-select>