refactor: remove unused CustomEmpty and related code

clean up dead code by removing all CustomEmpty component imports, template usages and the associated detailEmptyText state variable

src/pages-aigc/detail/detail.vue

@@ -5,7 +5,6 @@
     <view class="aigc-detail-content">
       <template v-if="taskDetail">
         <ResultPreview v-if="result.cover" :result="result" />
-        <CustomEmpty v-else :statusText="result.resultLabel" />
         <ResultMeta :items="metaItems" />
         <ResultActions :saving="isSaving" @save="handleSave" />
 
@@ -15,7 +14,6 @@
           <view class="aigc-detail-text-action" @tap="handleOpenRecords">历史记录</view>
         </view>
       </template>
-      <CustomEmpty v-else :statusText="detailEmptyText" />
     </view>
   </view>
 </template>
@@ -23,7 +21,6 @@
 <script setup>
 import { computed, ref } from "vue";
 import { onLoad, onShareAppMessage, onShow } from "@dcloudio/uni-app";
-import CustomEmpty from "@/components/CustomEmpty/index.vue";
 import AigcTopBar from "@/pages-aigc/components/AigcTopBar/index.vue";
 import { useCurrentCredit } from "@/pages-aigc/hooks/useCurrentCredit.js";
 import { getAigcGeneratorTaskDetail } from "@/request/api/AigcApi.js";
@@ -34,7 +31,6 @@ import ResultPreview from "./components/ResultPreview/index.vue";
 const { pointBalance, fetchCurrentCredit } = useCurrentCredit();
 const taskId = ref("");
 const taskDetail = ref(null);
-const detailEmptyText = ref("加载中...");
 const isSaving = ref(false);
 
 const GENERATOR_TYPE_TEXT = {
@@ -114,7 +110,6 @@ const showPlaceholderToast = (title) => {
 };
 
 const fetchTaskDetail = async () => {
-  detailEmptyText.value = "加载中...";
   uni.showLoading({
     title: "加载中",
     mask: true,
@@ -128,12 +123,10 @@ const fetchTaskDetail = async () => {
     }
 
     taskDetail.value = null;
-    detailEmptyText.value = "未获取到生成结果";
     showPlaceholderToast("获取任务详情失败");
   } catch (error) {
     console.error("获取AIGC生成任务详情失败", error);
     taskDetail.value = null;
-    detailEmptyText.value = "未获取到生成结果";
     showPlaceholderToast("获取任务详情失败");
   } finally {
     uni.hideLoading();
@@ -143,7 +136,6 @@ const fetchTaskDetail = async () => {
 onLoad((query = {}) => {
   taskId.value = String(query.taskId || "").trim();
   if (!taskId.value) {
-    detailEmptyText.value = "缺少任务信息";
     showPlaceholderToast("缺少任务ID");
     return;
   }