Standardize store exports to named useXxxStore convention

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/Compare/SidebarStates.vue

@@ -147,13 +147,13 @@
   </Sidebar>
 </template>
 <script>
-import CompareStore from '@/stores/compare.js';
+import { useCompareStore } from '@/stores/compare.js';
 import { getTimeLabel } from '@/module/timeLabel.js';
 import getMoment from 'moment';
 
 export default {
   setup() {
-    const compareStore = CompareStore();
+    const compareStore = useCompareStore();
 
     return { compareStore };
   },