fix: format ROI display in person cards to use currency formatting

pages/person/cards/index.vue

@@ -72,7 +72,7 @@
                         </view>
                         <view class="visit_item">
                             <text class="visit_label">投产比</text>
-                            <text class="visit_value">{{ cardData.roi }}</text>
+                            <text class="visit_value">{{ formatMoney(cardData.roi) }}</text>
                         </view>
                     </view>
                 </view>