docs: annotate payment, host operations and shared components

app/components/ListSegments.vue

@@ -1,4 +1,5 @@
 <script>
+/** 列表分段筛选器：options 使用 label/value，点击只更新 v-model，由父级决定何时请求数据。 */
 import { toDisplayString } from "vue";
 import { renderList } from "vue";
 import { normalizeClass } from "vue";