feat(UI): 优化应用加载体验和界面样式

改进应用网格布局的边距设置
在App.vue中改为非阻塞方式加载数据
为侧边栏添加内边距
在HomeView中优化图片加载状态显示和条件渲染

src/App.vue

@@ -1068,8 +1068,12 @@ onMounted(async () => {
   await loadCategories();
 
   // 分类目录加载后，并行加载主页数据和所有应用列表
+  // 使用非阻塞方式加载，让UI先展示出来
   loading.value = true;
-  await Promise.all([
+  homeLoading.value = true;
+
+  // 启动加载任务，但不等待它们完成
+  Promise.all([
     loadHome(),
     new Promise<void>((resolve) => {
       loadApps(() => {
@@ -1077,7 +1081,10 @@ onMounted(async () => {
         resolve();
       });
     }),
-  ]);
+  ]).then(() => {
+    // 所有数据加载完成后的回调（可选）
+    logger.info("所有应用数据加载完成");
+  });
 
   // 设置键盘导航
   document.addEventListener("keydown", (e) => {

src/components/AppGrid.vue

@@ -1,7 +1,7 @@
 <template>
   <div
     v-if="!loading"
-    class="mt-6 grid gap-5 sm:grid-cols-2 xl:grid-cols-3 2xl:grid-cols-4"
+    class="grid gap-5 sm:grid-cols-2 xl:grid-cols-3 2xl:grid-cols-4"
   >
     <AppCard
       v-for="(app, index) in apps"
@@ -12,7 +12,7 @@
   </div>
   <div
     v-else
-    class="mt-6 grid gap-5 sm:grid-cols-2 xl:grid-cols-3 2xl:grid-cols-4"
+    class="grid gap-5 sm:grid-cols-2 xl:grid-cols-3 2xl:grid-cols-4"
   >
     <div
       v-for="n in 8"

src/components/AppSidebar.vue

@@ -32,7 +32,7 @@
 
     <StoreModeSwitcher />
 
-    <div class="flex-1 space-y-2 overflow-y-auto scrollbar-muted pr-2">
+    <div class="flex-1 space-y-2 overflow-y-auto scrollbar-muted px-2 py-1">
       <button
         type="button"
         class="flex w-full items-center gap-3 rounded-2xl border border-transparent px-4 py-3 text-left text-sm font-medium text-slate-600 transition hover:border-brand/30 hover:bg-brand/5 hover:text-brand focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand/40 dark:text-slate-300 dark:hover:bg-slate-800"

src/components/HomeView.vue

@@ -1,7 +1,8 @@
 <template>
   <div class="space-y-8">
+    <!-- 初始加载状态 - 只有在完全没有数据时显示 -->
     <div
-      v-if="loading"
+      v-if="loading && links.length === 0 && lists.length === 0"
       class="flex flex-col items-center justify-center py-12 text-slate-500 dark:text-slate-400"
     >
       <i class="fas fa-spinner fa-spin text-2xl mb-3"></i>
@@ -13,9 +14,10 @@
     >
       {{ error }}
     </div>
-    <div v-else-if="error" class="text-center text-rose-600">{{ error }}</div>
+    <!-- 有数据就立即展示，图片逐步加载 -->
     <div v-else>
-      <div class="grid gap-4 auto-fit-grid">
+      <!-- Links 区域 -->
+      <div v-if="links.length > 0" class="grid gap-4 auto-fit-grid">
         <a
           v-for="link in links"
           :key="link.url + link.name"
@@ -24,11 +26,23 @@
           class="flex flex-col items-start gap-2 rounded-2xl border border-slate-200/70 bg-white/90 p-4 shadow-sm transition hover:shadow-lg dark:border-slate-800/70 dark:bg-slate-900/90"
           :title="link.more as string"
         >
-          <img
-            :src="computedImgUrl(link)"
-            class="h-20 w-full object-contain"
-            loading="lazy"
-          />
+          <div class="h-20 w-full flex items-center justify-center bg-slate-100/50 dark:bg-slate-800/50 rounded-xl overflow-hidden">
+            <img
+              :src="computedImgUrl(link)"
+              class="h-full w-full object-contain"
+              loading="lazy"
+              @load="onImageLoad(link.url + link.name)"
+              @error="onImageError(link.url + link.name)"
+              :class="{ 'opacity-0': !imageLoaded[link.url + link.name], 'opacity-100 transition-opacity duration-300': imageLoaded[link.url + link.name] }"
+            />
+            <!-- 图片加载占位符 -->
+            <div
+              v-if="!imageLoaded[link.url + link.name]"
+              class="absolute inset-0 flex items-center justify-center"
+            >
+              <div class="h-8 w-8 animate-pulse rounded-full bg-slate-200 dark:bg-slate-700"></div>
+            </div>
+          </div>
           <div class="text-base font-semibold text-slate-900 dark:text-white">
             {{ link.name }}
           </div>
@@ -38,7 +52,8 @@
         </a>
       </div>
 
-      <div class="space-y-6 mt-6">
+      <!-- Lists 区域 -->
+      <div v-if="lists.length > 0" class="space-y-6 mt-6">
         <section v-for="section in lists" :key="section.title">
           <div class="flex items-center justify-between">
             <h3 class="text-lg font-semibold text-slate-900">
@@ -62,6 +77,7 @@
 <script setup lang="ts">
 import AppCard from "./AppCard.vue";
 import { APM_STORE_BASE_URL } from "../global/storeConfig";
+import { reactive } from "vue";
 import type { HomeLink, HomeList, App } from "../global/typedefinition";
 
 defineProps<{
@@ -75,6 +91,17 @@ defineEmits<{
   (e: "open-detail", app: App | Record<string, unknown>): void;
 }>();
 
+// 图片加载状态跟踪
+const imageLoaded = reactive<Record<string, boolean>>({});
+
+const onImageLoad = (key: string) => {
+  imageLoaded[key] = true;
+};
+
+const onImageError = (key: string) => {
+  imageLoaded[key] = true; // 即使加载失败也标记为完成，隐藏占位符
+};
+
 const computedImgUrl = (link: HomeLink) => {
   if (!link.imgUrl) return "";
   const arch = window.apm_store.arch || "amd64";