Fix getters mutating state on repeated access

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

src/stores/allMapData.ts

@@ -124,23 +124,22 @@ export const useAllMapDataStore = defineStore('allMapDataStore', {
     },
     filterAttrs: state => {
       if(state.allFilterAttrs !== null){
-        state.allFilterAttrs.forEach(att => {
-          switch (att.type) {
+        return state.allFilterAttrs.map(att => {
+          const copy = { ...att };
+          switch (copy.type) {
             case 'date':
-              att.min = att.min !== null ? moment(att.min).format('YYYY/MM/DD HH:mm') : null;
-              att.max = att.max !== null ? moment(att.max).format('YYYY/MM/DD HH:mm') : null;
+              copy.min = copy.min !== null ? moment(copy.min).format('YYYY/MM/DD HH:mm') : null;
+              copy.max = copy.max !== null ? moment(copy.max).format('YYYY/MM/DD HH:mm') : null;
               break;
             case 'float':
-              // Decimal.ROUND_UP|0: 無條件進位； Decimal.ROUND_DOWN|1: 無條件捨去。
-              att.min = att.min !== null ? Number(new Decimal(att.min).toFixed(2, 1)) : null;
-              att.max = att.max !== null ? Number(new Decimal(att.max).toFixed(2, 0)) : null;
+              copy.min = copy.min !== null ? Number(new Decimal(copy.min).toFixed(2, 1)) : null;
+              copy.max = copy.max !== null ? Number(new Decimal(copy.max).toFixed(2, 0)) : null;
               break
             default:
               break;
           }
-          return att;
+          return copy;
         });
-        return state.allFilterAttrs;
       }
     },
     allFunnels: state => {