fix(ai-pick): cardData 变化时重建 Model，对齐 Vue setCardData

entry/src/main/ets/ai-pick/AiPick.ets

@@ -17,10 +17,21 @@ export struct AiPick {
     card_title: { value: '' },
     bury_point: '',
   };
+  // 初值用 placeholder cardData 占位（仅类型占位，实际值由 aboutToAppear 用真实 cardData 创建）
   @State vm: AiPickModel = new AiPickModel(this.cardData);
   @State tabIdx: number = 0;
 
   aboutToAppear(): void {
+    this.vm = new AiPickModel(this.cardData);
+    this.vm.loadData();
+  }
+
+  // 对应 Vue 端 watch(() => props.cardData, () => cardHandler.value.setCardData(...))
+  // 父组件传入不同卡片配置时，重新构造 Model 并重新加载数据
+  @Watch('cardData')
+  onCardDataChanged(): void {
+    this.vm = new AiPickModel(this.cardData);
+    this.tabIdx = 0;
     this.vm.loadData();
   }