feat: update TopNavBar and shared work page navigation

Add leftAction prop to TopNavBar to support back or home left navigation actions, update left icon accordingly. Add optional chaining to shareDetail.templateName to prevent errors. Modify sharedWork page to use home left action and update back handler to use direct home reLaunch.

src/components/TopNavBar/index.vue

@@ -8,9 +8,9 @@
       class="flex flex-items-center flex-justify-between border-box pl-8 pr-8"
       :style="navContentStyle"
     >
-      <!-- 左侧返回按钮 -->
+      <!-- 左侧导航按钮 -->
       <view class="nav-bar-left flex flex-items-center flex-justify-center" v-if="showBack" @click="handleBack">
-        <uni-icons type="left" size="20" :color="backIconColor" />
+        <uni-icons :type="leftIconType" size="20" :color="backIconColor" />
       </view>
 
       <!-- 中间标题区域 -->
@@ -53,6 +53,12 @@ const props = defineProps({
     type: Boolean,
     default: true,
   },
+  // 左侧按钮行为
+  leftAction: {
+    type: String,
+    default: "back",
+    validator: (value) => ["back", "home"].includes(value),
+  },
   // 背景颜色
   background: {
     type: String,
@@ -148,6 +154,8 @@ const navContentStyle = computed(() => {
   };
 });
 
+const leftIconType = computed(() => (props.leftAction === "home" ? "home-filled" : "left"));
+
 const hasBackListener = computed(() => {
   const vnodeProps = instance?.vnode?.props || {};
   return Boolean(vnodeProps.onBack);
@@ -159,6 +167,14 @@ const handleBack = () => {
     emit("back");
     return;
   }
+
+  if (props.leftAction === "home") {
+    uni.reLaunch({
+      url: "/pages/index/index",
+    });
+    return;
+  }
+
   // 如果没有监听back事件，默认执行返回上一页
   uni.navigateBack({
     delta: 1,

src/pages-aigc/sharedWork/sharedWork.vue

@@ -1,8 +1,9 @@
 <template>
   <view class="shared-work-page">
     <view class="shared-work-nav">
-      <TopNavBar :title="shareDetail.templateName || '旅行作品'" background="#fff" title-color="#173a5f"
-        back-icon-color="#173a5f" :align-with-menu-button="true" :z-index="3" @back="handleBack" />
+      <TopNavBar :title="shareDetail?.templateName || '旅行作品'" background="#fff" title-color="#173a5f"
+        back-icon-color="#173a5f" left-action="home" :align-with-menu-button="true" :z-index="3"
+        @back="openAppHome" />
     </view>
 
     <view class="shared-work-scroll">
@@ -106,14 +107,11 @@ const openAigcHome = () => {
   });
 };
 
-const handleBack = () => {
-  const pages = getCurrentPages();
-  if (pages.length > 1) {
-    uni.navigateBack();
-    return;
-  }
-
-  openAigcHome();
+const openAppHome = () => {
+  uni.reLaunch({
+    url: "/pages/index/index",
+    fail: () => showToast("打开首页失败"),
+  });
 };
 
 const handleCreateOwn = async () => {