feat: 包信息展示与扫描数据修正

- scanner: 版本数只统计实际存在的 .tgz（修复 playwright-core 5113 版本虚高），解析 description/homepage/repository/author/license 元数据字段
- 前端: 新增 PkgLogo 首字母徽标组件，详情抽屉展示包 logo（主页 favicon 加载失败自动回退）、介绍与主页/仓库/许可胶囊，优化抽屉头部布局
- 全量 UI 改进: 毛玻璃扫描遮罩与进度、头像菜单重新扫描、主题切换、移动端 Tabbar/StatMini/Top30Panel 响应式、列表瘦身与详情按需加载
- compose: TZ=Asia/Shanghai + 命名卷 vcm-data 解决 SQLite 权限
- 更新 amd64 镜像 tar

frontend/src/App.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { ref, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import { useRoute } from 'vue-router'
 import AppTopbar from './components/AppTopbar.vue'
 import MobileTabbar from './components/MobileTabbar.vue'
@@ -7,12 +7,33 @@ import SettingDrawer from './components/SettingDrawer.vue'
 import { useStore } from './store'
 
 const route = useRoute()
-const { refreshAll } = useStore()
+const { state, refreshAll, scanNow } = useStore()
 const settingsOpen = ref(false)
 
 const isLogin = () => route.path === '/login'
 const isMobile = () => window.matchMedia('(max-width: 767px)').matches
 
+// 数据基于何时扫描（后端扫描时间，缓存复用）
+const fmtScanTime = computed(() => {
+  const t = state.scannedAt
+  if (!t) return ''
+  const d = new Date(t)
+  const p = n => String(n).padStart(2, '0')
+  return `${d.getFullYear()}-${p(d.getMonth() + 1)}-${p(d.getDate())} ${p(d.getHours())}:${p(d.getMinutes())}`
+})
+
+async function doRescan() {
+  await scanNow()
+}
+
+// 扫描进度字节数 → 可读文本
+const fmtScanBytes = computed(() => {
+  const b = state.scanProgress.bytes || 0
+  const mb = b / 1024 / 1024
+  if (mb >= 1024) return `${(mb / 1024).toFixed(2)} GB`
+  return `${mb.toFixed(1)} MB`
+})
+
 onMounted(() => {
   if (!isLogin()) refreshAll()
 })
@@ -23,7 +44,7 @@ onMounted(() => {
 
   <div v-if="!isLogin()">
     <!-- 桌面/平板顶栏 -->
-    <AppTopbar class="desktop-topbar" @open-settings="settingsOpen = true" />
+    <AppTopbar class="desktop-topbar" @open-settings="settingsOpen = true" @rescan="doRescan" />
     <!-- 移动端顶栏：☰ + 品牌 -->
     <header class="m-topbar">
       <div class="m-brand">
@@ -32,6 +53,25 @@ onMounted(() => {
       </div>
       <div class="m-menu" @click="settingsOpen = true">☰</div>
     </header>
+
+    <!-- 导航栏下方：扫描信息条 -->
+    <div class="scan-banner" v-if="state.loading || state.scannedAt">
+      <span v-if="state.loading" class="scan-banner-loading">⏳ 正在扫描缓存目录，请稍候…</span>
+      <span v-else>🕐 数据基于 {{ fmtScanTime }} 扫描</span>
+    </div>
+
+    <!-- 扫描遮罩：毛玻璃 + loading + 实时进度 -->
+    <div v-if="state.loading" class="scan-mask">
+      <div class="scan-card">
+        <div class="scan-spinner"></div>
+        <div class="scan-title">正在扫描缓存目录…</div>
+        <div class="scan-info">
+          已扫描 <b>{{ state.scanProgress.packages.toLocaleString() }}</b> 个包
+          <span class="dot">·</span> <b>{{ fmtScanBytes }}</b>
+        </div>
+        <div class="scan-bar"><i></i></div>
+      </div>
+    </div>
   </div>
 
   <router-view v-slot="{ Component }">
@@ -47,6 +87,95 @@ onMounted(() => {
 <style scoped>
 .m-topbar { display: none; }
 
+/* —— 扫描信息条（顶栏下方） —— */
+.scan-banner {
+  display: flex;
+  align-items: center;
+  justify-content: flex-start; /* 靠左对齐 */
+  gap: 8px;
+  padding: 6px 20px;
+  font-size: 12px;
+  color: var(--ink-faint);
+  background: var(--panel-soft);
+  border-bottom: 1px solid var(--line-soft);
+  font-family: var(--num);
+}
+.scan-banner-loading {
+  color: var(--orange);
+  font-weight: 600;
+  animation: blink 1.2s ease-in-out infinite;
+}
+
+/* —— 扫描遮罩（玻璃拟态：半透明背景 + 卡片磨砂模糊 + 细边框/高光）
+   遮罩层只做半透明（避免全屏 blur 的性能开销与双倍模糊），
+   真正的毛玻璃效果做在卡片上：半透明背景 + backdrop-filter 模糊 + 细边框 + 高光 —— */
+.scan-mask {
+  position: fixed;
+  inset: 0;
+  z-index: 500;
+  display: grid;
+  place-items: center;
+  background: rgba(18, 16, 14, .38);
+}
+html[data-theme="bright"] .scan-mask { background: rgba(244, 242, 239, .45); }
+.scan-card {
+  position: relative;
+  background: rgba(28, 26, 24, .55);
+  backdrop-filter: blur(18px) saturate(1.35);
+  -webkit-backdrop-filter: blur(18px) saturate(1.35);
+  border: 1px solid rgba(255, 255, 255, .14);
+  border-radius: 20px;
+  box-shadow:
+    0 24px 60px -16px rgba(0, 0, 0, .35),
+    inset 0 1px 0 rgba(255, 255, 255, .18);
+  padding: 32px 44px;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 12px;
+  min-width: 300px;
+  max-width: 92vw;
+}
+html[data-theme="bright"] .scan-card {
+  background: rgba(255, 255, 255, .55);
+  border-color: rgba(255, 255, 255, .55);
+  box-shadow:
+    0 24px 60px -16px rgba(0, 0, 0, .22),
+    inset 0 1px 0 rgba(255, 255, 255, .85);
+}
+.scan-spinner {
+  width: 40px;
+  height: 40px;
+  border-radius: 50%;
+  border: 4px solid var(--line);
+  border-top-color: var(--orange);
+  animation: spin360 .8s linear infinite;
+}
+.scan-title { font-size: 15px; font-weight: 700; }
+.scan-info { font-family: var(--num); font-size: 12.5px; color: var(--ink-dim); }
+.scan-info b { color: var(--orange); font-weight: 700; }
+.scan-info .dot { margin: 0 4px; color: var(--ink-faint); }
+.scan-bar {
+  width: 100%;
+  height: 6px;
+  border-radius: 99px;
+  background: var(--num-bg);
+  overflow: hidden;
+  margin-top: 6px;
+}
+.scan-bar i {
+  display: block;
+  height: 100%;
+  width: 42%;
+  border-radius: 99px;
+  background: linear-gradient(90deg, transparent, var(--orange), transparent);
+  animation: scan-slide 1.1s ease-in-out infinite;
+}
+@keyframes scan-slide {
+  from { transform: translateX(-110%); }
+  to { transform: translateX(340%); }
+}
+
 @media (max-width: 767px) {
   .desktop-topbar { display: none; }
   .m-topbar {
@@ -60,6 +189,10 @@ onMounted(() => {
     top: 0;
     z-index: 100;
   }
+  .scan-banner {
+    padding: 5px 16px;
+    font-size: 11px;
+  }
   .m-brand { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 700; }
   .m-logo {
     width: 30px;