refactor(xumu): 重构耳标选择器组件

- 新增计算属性 api，用于生成请求 URL
- 将 watch 目标从 action 改为 api
- 优化 getEartag 方法，使用计算属性 api 替代手动构建 URL

project/xumu/components/AiEartagPicker.vue

@@ -18,8 +18,17 @@ export default {
       selected: []
     }
   },
+  computed: {
+    api: v => {
+      let url = v.action
+      if (v.penId) {
+        url += `?penId=${v.penId}`
+      }
+      return url
+    }
+  },
   watch: {
-    action: {
+    api: {
       immediate: true,
       handler() {
         this.getEartag()
@@ -28,11 +37,7 @@ export default {
   },
   methods: {
     getEartag() {
-      let url = this.action
-      if (this.penId) {
-        url += `?penId=${this.penId}`
-      }
-      !/undefined/.test(url) && this.instance.post(url).then(res => {
+      !/undefined/.test(this.api) && this.instance.post(this.api).then(res => {
         if (res?.data) {
           this.list = res.data
         }