feat: 更新 API 地址，添加分类组件，优化市场页面布局和功能

src/views/issue/issuing-apply/index.vue

@@ -17,7 +17,7 @@ const initialData: RwaIssuanceProductBody = {
   product: {
     name: "",
     code: "",
-    categoryId: categories.value!.length > 0 ? categories.value![0].id : "",
+    categoryId: categories.value?.data && categories.value?.data!.length > 0 ? categories.value?.data![0].id : "",
   },
   editions: [
     {
@@ -55,7 +55,7 @@ async function handleSubmit(editions: RwaIssuanceProductBody["editions"]) {
       </ion-toolbar>
     </ion-header>
     <IonContent :fullscreen="true" class="ion-padding">
-      <Base v-if="step === 1" :initial-data="form.product" :categories="categories || []" @next="handleNext" />
+      <Base v-if="step === 1" :initial-data="form.product" :categories="categories" @next="handleNext" />
       <IssuePeriod v-else-if="step === 2" :initial-data="form.editions" @submit="handleSubmit" />
       <Done v-else />
     </IonContent>