diff --git a/src/assets/style/main.css b/src/assets/style/main.css
index b76a860..648ad57 100644
--- a/src/assets/style/main.css
+++ b/src/assets/style/main.css
@@ -8,7 +8,20 @@
 }
 
 * {
-  font-family: 'DingTalk', sans-serif !important;
+  font-family: 'DingTalk', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
+  font-style: normal;
+}
+
+html {
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+}
+
+button,
+input,
+select,
+textarea {
+  font: inherit;
 }
 
 .native-date-input {
@@ -32,7 +45,7 @@
   background:
     linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(234, 243, 245, 0.9)),
     radial-gradient(circle at 14% 10%, rgba(122, 159, 171, 0.18), transparent 30%);
-  box-shadow: 0 14px 34px rgba(128, 151, 155, 0.22);
+  box-shadow: 0 10px 26px rgba(128, 151, 155, 0.18);
 }
 
 .theme-2026-card::before {
@@ -58,7 +71,7 @@
 
 .theme-2026-card-hover:hover {
   border-color: rgba(116, 153, 165, 0.86);
-  box-shadow: 0 20px 42px rgba(114, 143, 150, 0.32);
+  box-shadow: 0 16px 34px rgba(114, 143, 150, 0.26);
 }
 
 .dark .theme-2026-card {
diff --git a/src/components/common/BaseModal.vue b/src/components/common/BaseModal.vue
index 0e06628..701e0fe 100644
--- a/src/components/common/BaseModal.vue
+++ b/src/components/common/BaseModal.vue
@@ -16,7 +16,7 @@
         <div class="flex min-h-full items-center justify-center p-4">
           <div
             ref="modalRef"
-            class="relative transform overflow-hidden rounded-[30px] shadow-xl transition-all"
+            class="relative flex max-h-[calc(100vh-2rem)] transform flex-col overflow-hidden rounded-[30px] shadow-xl transition-all"
             :class="[
               sizeClasses,
               isDarkMode ? 'bg-gray-800' : 'bg-white'
@@ -26,7 +26,7 @@
             <!-- 头部 -->
             <div
               v-if="$slots.header || title"
-              class="flex items-center justify-between px-6 py-4 border-b"
+              class="flex shrink-0 items-center justify-between border-b px-4 py-3 sm:px-6 sm:py-4"
               :class="[isDarkMode ? 'border-gray-700' : 'border-gray-200']"
             >
               <slot name="header">
@@ -37,7 +37,7 @@
               <button
                 v-if="closable"
                 @click="$emit('close')"
-                class="rounded-md p-2 transition-colors"
+                class="flex h-11 w-11 shrink-0 items-center justify-center rounded-lg transition-colors"
                 :class="[
                   isDarkMode
                     ? 'text-gray-400 hover:text-gray-300 hover:bg-gray-700'
@@ -49,14 +49,14 @@
             </div>
             
             <!-- 内容 -->
-            <div class="px-6 py-4">
+            <div class="min-h-0 flex-1 overflow-y-auto px-4 py-4 sm:px-6">
               <slot></slot>
             </div>
             
             <!-- 底部 -->
             <div
               v-if="$slots.footer"
-              class="flex items-center justify-end space-x-3 px-6 py-4 border-t"
+              class="flex shrink-0 items-center justify-end space-x-3 border-t px-4 py-3 sm:px-6 sm:py-4"
               :class="[isDarkMode ? 'border-gray-700 bg-gray-900/50' : 'border-gray-200 bg-gray-50']"
             >
               <slot name="footer"></slot>
diff --git a/src/components/common/StatCard.vue b/src/components/common/StatCard.vue
index 0c97cd8..29ae39a 100644
--- a/src/components/common/StatCard.vue
+++ b/src/components/common/StatCard.vue
@@ -1,29 +1,29 @@
 <template>
   <div
-    class="theme-2026-card theme-2026-card-hover group rounded-[30px] p-6 shadow-md transition-all duration-300 hover:-translate-y-0.5 hover:shadow-lg"
+    class="theme-2026-card theme-2026-card-hover group rounded-[24px] p-4 shadow-md transition-all duration-300 hover:-translate-y-0.5 hover:shadow-lg sm:rounded-[30px] sm:p-6"
     :class="[
       isDarkMode
         ? 'hover:bg-gray-800 hover:shadow-black/20'
         : 'hover:shadow-gray-200/80'
     ]"
   >
-    <div class="flex items-center justify-between">
-      <div>
-        <p class="text-sm" :class="[isDarkMode ? 'text-gray-400' : 'text-gray-600']">
+    <div class="flex items-center justify-between gap-3">
+      <div class="min-w-0">
+        <p class="truncate text-xs sm:text-sm" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-600']">
           {{ title }}
         </p>
-        <h3 class="text-2xl font-bold mt-1" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
+        <h3 class="mt-1 truncate text-xl font-bold tabular-nums sm:text-2xl" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
           {{ value }}
         </h3>
       </div>
       <div
-        class="rounded-full p-3 transition-transform duration-300 group-hover:scale-105"
+        class="shrink-0 rounded-full p-2.5 transition-transform duration-300 group-hover:scale-105 sm:p-3"
         :class="iconBgClass"
       >
-        <component :is="icon" class="w-6 h-6" :class="iconClass" />
+        <component :is="icon" class="h-5 w-5 sm:h-6 sm:w-6" :class="iconClass" />
       </div>
     </div>
-    <p class="text-sm mt-2" :class="descriptionClass">
+    <p class="mt-2 line-clamp-1 text-xs sm:text-sm" :class="descriptionClass">
       <slot name="description"></slot>
     </p>
   </div>
diff --git a/src/composables/useAdminFiles.ts b/src/composables/useAdminFiles.ts
index d4e3f23..059c061 100644
--- a/src/composables/useAdminFiles.ts
+++ b/src/composables/useAdminFiles.ts
@@ -439,7 +439,9 @@ export function useAdminFiles() {
   ]
 
   const detailPolicyActionOptions = computed<DetailPolicyActionOption[]>(() =>
-    createPolicyActionOptions(Boolean(selectedFileDetail.value?.isPermanentFile))
+    createPolicyActionOptions(Boolean(selectedFileDetail.value?.isPermanentFile)).filter(
+      (option) => !option.disabled
+    )
   )
 
   const batchPolicyActionOptions = computed<BatchPolicyActionOption[]>(
diff --git a/src/i18n/locales/en-US.ts b/src/i18n/locales/en-US.ts
index ca3bce4..388229e 100644
--- a/src/i18n/locales/en-US.ts
+++ b/src/i18n/locales/en-US.ts
@@ -55,6 +55,7 @@ export default {
   admin: {
     logout: 'Logout',
     dashboard: {
+      adminLabel: 'FileCodeBox Admin',
       title: 'Dashboard',
       totalFiles: 'Total Files',
       storageSpace: 'Storage Space',
@@ -536,6 +537,8 @@ export default {
     statusInsight: 'Status Insight',
     nextAction: 'Next Action',
     lifecycle: 'Lifecycle',
+    expandLifecycle: 'Show all lifecycle records ({count})',
+    collapseLifecycle: 'Collapse lifecycle records',
     permanent: 'Permanent',
     createdAt: 'Created Time',
     remainingDownloads: 'Remaining Downloads',
diff --git a/src/i18n/locales/zh-CN.ts b/src/i18n/locales/zh-CN.ts
index f719c97..0dd5af9 100644
--- a/src/i18n/locales/zh-CN.ts
+++ b/src/i18n/locales/zh-CN.ts
@@ -55,6 +55,7 @@ export default {
   admin: {
     logout: '退出登录',
     dashboard: {
+      adminLabel: 'FileCodeBox 管理后台',
       title: '仪表盘',
       totalFiles: '总文件数',
       storageSpace: '存储空间',
@@ -533,6 +534,8 @@ export default {
     statusInsight: '状态洞察',
     nextAction: '建议动作',
     lifecycle: '生命周期',
+    expandLifecycle: '展开全部生命周期记录（共 {count} 条）',
+    collapseLifecycle: '收起生命周期记录',
     permanent: '永久有效',
     createdAt: '创建时间',
     remainingDownloads: '剩余次数',
diff --git a/src/utils/clipboard.ts b/src/utils/clipboard.ts
index 1f38d21..8ef5f8e 100644
--- a/src/utils/clipboard.ts
+++ b/src/utils/clipboard.ts
@@ -36,30 +36,47 @@ export const copyToClipboard = async (
     }
   }
 
+  const showManualCopyDialog = () => {
+    window.prompt('复制下面内容', text)
+  }
+
   try {
-    // 优先使用 Clipboard API
-    if (document.hasFocus() && navigator.clipboard && navigator.clipboard.writeText) {
-      await navigator.clipboard.writeText(text)
-      showCopyMessage(successMsg, 'success')
-      return true
+    if (navigator.clipboard && window.isSecureContext) {
+      try {
+        await navigator.clipboard.writeText(text)
+        showCopyMessage(successMsg, 'success')
+        return true
+      } catch {
+        // Continue to the DOM fallback.
+      }
     }
-    // 后备方案：使用传统的复制方法
+
     const textarea = document.createElement('textarea')
     textarea.value = text
-    textarea.style.position = 'fixed'
-    textarea.style.opacity = '0'
+    textarea.setAttribute('readonly', '')
+    textarea.style.cssText =
+      'position:fixed;left:0;top:0;width:1px;height:1px;opacity:0;z-index:-1;'
     document.body.appendChild(textarea)
+    textarea.focus()
     textarea.select()
-    const success = document.execCommand('copy')
-    document.body.removeChild(textarea)
+    textarea.setSelectionRange(0, textarea.value.length)
+    let success = false
+    try {
+      success = document.execCommand('copy')
+    } finally {
+      document.body.removeChild(textarea)
+    }
     if (success) {
       showCopyMessage(successMsg, 'success')
       return true
-    } else {
-      throw new Error('execCommand copy failed')
     }
+
+    showManualCopyDialog()
+    showCopyMessage('已打开手动复制窗口', 'error')
+    return false
   } catch (err) {
     console.error('复制失败:', err)
+    showManualCopyDialog()
     showCopyMessage(errorMsg, 'error')
     return false
   }
diff --git a/src/views/manage/DashboardView.vue b/src/views/manage/DashboardView.vue
index 4b2b5b9..e15b16f 100644
--- a/src/views/manage/DashboardView.vue
+++ b/src/views/manage/DashboardView.vue
@@ -1,8 +1,8 @@
 <template>
-  <div class="p-6">
+  <div class="p-4 sm:p-6">
     <div class="mb-6 flex flex-col gap-2 sm:flex-row sm:items-end sm:justify-between">
       <div>
-        <p class="text-sm" :class="[mutedTextClass]">FileCodeBox Admin</p>
+        <p class="text-sm" :class="[mutedTextClass]">{{ t('admin.dashboard.adminLabel') }}</p>
         <h2 class="text-2xl font-bold" :class="[primaryTextClass]">
           {{ t('admin.dashboard.title') }}
         </h2>
@@ -32,7 +32,7 @@
       {{ errorMessage }}
     </div>
 
-    <div class="grid grid-cols-1 gap-4 md:grid-cols-2 xl:grid-cols-4">
+    <div class="grid grid-cols-2 gap-3 sm:gap-4 xl:grid-cols-4">
       <StatCard
         :title="t('admin.dashboard.totalFiles')"
         :value="dashboardData.totalFiles"
@@ -78,9 +78,9 @@
       </StatCard>
     </div>
 
-    <div v-if="dashboardData.hasExtendedStats" class="mt-6 grid grid-cols-1 gap-6 xl:grid-cols-3">
+    <div v-if="dashboardData.hasExtendedStats" class="mt-6 grid grid-cols-1 gap-6 2xl:grid-cols-3">
       <section
-        class="theme-2026-card theme-2026-card-hover rounded-[30px] p-5 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg xl:col-span-2"
+        class="theme-2026-card theme-2026-card-hover rounded-[30px] p-5 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg 2xl:col-span-2"
         :class="[panelClass, cardHoverClass]"
       >
         <div class="mb-5 flex items-center justify-between">
@@ -119,12 +119,12 @@
           />
         </div>
 
-        <div class="mt-6 grid grid-cols-1 gap-3 md:grid-cols-2 xl:grid-cols-5">
+        <div class="mt-6 grid grid-cols-1 gap-3 sm:grid-cols-2 xl:grid-cols-3 2xl:grid-cols-5">
           <button
             v-for="action in healthActions"
             :key="action.key"
             type="button"
-            class="theme-2026-card-hover group flex min-h-28 flex-col justify-between rounded-[30px] border p-4 text-left shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg"
+            class="theme-2026-card-hover group flex min-h-24 flex-col justify-between rounded-[24px] border p-4 text-left shadow-sm transition-all duration-200 hover:-translate-y-0.5 hover:shadow-md sm:rounded-[30px]"
             :class="getHealthActionClass(action.tone)"
             @click="openHealthQueue(action.health)"
           >
diff --git a/src/views/manage/FileManageView.vue b/src/views/manage/FileManageView.vue
index 9a09a5b..ee17de3 100644
--- a/src/views/manage/FileManageView.vue
+++ b/src/views/manage/FileManageView.vue
@@ -1,5 +1,5 @@
 <template>
-  <div class="p-6">
+  <div class="p-4 sm:p-6">
     <div class="mb-6 flex flex-col gap-3 lg:flex-row lg:items-end lg:justify-between">
       <div>
         <h2 class="text-2xl font-bold" :class="[primaryTextClass]">
@@ -11,22 +11,22 @@
       </div>
     </div>
 
-    <div class="mb-6 grid grid-cols-1 gap-4 md:grid-cols-2 xl:grid-cols-4">
+    <div class="mb-5 grid grid-cols-2 gap-3 sm:mb-6 sm:gap-4 xl:grid-cols-4">
       <div
         v-for="card in summaryCards"
         :key="card.label"
-        class="theme-2026-card theme-2026-card-hover group rounded-[30px] border p-4 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg"
+        class="theme-2026-card theme-2026-card-hover group rounded-[24px] border p-3.5 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg sm:rounded-[30px] sm:p-4"
         :class="[panelClass, cardHoverClass]"
       >
         <div class="flex items-start justify-between gap-3">
           <div>
-            <p class="text-sm" :class="[mutedTextClass]">{{ card.label }}</p>
-            <p class="mt-2 text-2xl font-semibold" :class="[primaryTextClass]">
+            <p class="text-xs sm:text-sm" :class="[mutedTextClass]">{{ card.label }}</p>
+            <p class="mt-1.5 truncate text-xl font-semibold tabular-nums sm:mt-2 sm:text-2xl" :class="[primaryTextClass]">
               {{ card.value }}
             </p>
           </div>
           <div
-            class="rounded-lg p-2 transition-transform duration-200 group-hover:scale-105"
+            class="rounded-lg p-2 transition-transform duration-200 group-hover:scale-105 max-sm:p-1.5"
             :class="[card.iconClass]"
           >
             <component :is="card.icon" class="h-5 w-5" />
@@ -39,14 +39,14 @@
       class="theme-2026-card theme-2026-card-hover mb-6 rounded-[30px] border p-4 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg"
       :class="[panelClass, cardHoverClass]"
     >
-      <div class="flex items-center justify-between gap-3">
+      <div class="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
         <div>
           <h3 class="text-base font-semibold" :class="[primaryTextClass]">条件筛选</h3>
           <p class="mt-1 text-xs" :class="[mutedTextClass]">
             {{ hasActiveFilters ? '已应用筛选条件' : '默认收起，需要时展开' }}
           </p>
         </div>
-        <div class="flex flex-wrap items-center justify-end gap-2">
+        <div class="flex flex-wrap items-center gap-2 sm:justify-end">
           <BaseButton
             v-if="hasActiveFilters"
             variant="outline"
@@ -269,10 +269,10 @@
           v-if="tableData.length > 0"
           class="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between"
         >
-          <label class="inline-flex items-center gap-2 text-sm" :class="[primaryTextClass]">
+          <label class="inline-flex min-h-11 cursor-pointer items-center gap-2 text-sm sm:min-h-0" :class="[primaryTextClass]">
             <input
               type="checkbox"
-              class="h-4 w-4 rounded border-gray-300 text-indigo-600 focus:ring-indigo-500"
+              class="h-5 w-5 rounded border-gray-300 text-indigo-600 focus:ring-indigo-500"
               :checked="isAllCurrentPageSelected"
               :disabled="isBatchActionRunning"
               :indeterminate="isCurrentPagePartiallySelected"
@@ -287,7 +287,7 @@
             </span>
           </label>
 
-          <div class="flex flex-wrap items-center gap-2">
+          <div v-if="hasSelectedFiles" class="flex flex-wrap items-center gap-2">
             <BaseButton
               v-if="hasSelectedFiles"
               variant="outline"
@@ -407,7 +407,7 @@
             <td class="px-6 py-4 whitespace-nowrap">
               <input
                 type="checkbox"
-                class="h-4 w-4 rounded border-gray-300 text-indigo-600 focus:ring-indigo-500"
+                class="h-5 w-5 rounded border-gray-300 text-indigo-600 focus:ring-indigo-500"
                 :checked="selectedFileIds.has(file.id)"
                 :disabled="isBatchActionRunning"
                 :aria-label="t('fileManage.selectFile', { name: file.displayName })"
@@ -873,70 +873,6 @@
           </button>
         </div>
 
-        <section
-          class="theme-2026-card-hover space-y-3 rounded-[30px] border px-4 py-4 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg"
-          :class="[subtleSectionClass, cardHoverClass]"
-        >
-          <div class="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
-            <div>
-              <h4 class="text-sm font-semibold" :class="[primaryTextClass]">
-                {{ t('fileManage.metadataInfo') }}
-              </h4>
-              <p class="mt-1 text-xs" :class="[mutedTextClass]">
-                {{ t('fileManage.metadataHint') }}
-              </p>
-            </div>
-            <BaseButton
-              size="sm"
-              :loading="isDetailMetadataSaving"
-              :disabled="isDetailLoading"
-              @click="updateDetailMetadata"
-            >
-              <template #icon>
-                <CheckIcon class="mr-2 h-4 w-4" />
-              </template>
-              {{ t('fileManage.saveMetadata') }}
-            </BaseButton>
-          </div>
-
-          <div class="grid gap-3 lg:grid-cols-[minmax(0,1fr)_minmax(220px,0.55fr)]">
-            <label class="space-y-1">
-              <span class="text-xs font-medium" :class="[mutedTextClass]">
-                {{ t('fileManage.metadataNote') }}
-              </span>
-              <textarea
-                v-model="detailMetadataForm.note"
-                rows="4"
-                maxlength="2000"
-                class="w-full resize-y rounded-lg border px-3 py-2 text-sm focus:border-transparent focus:ring-2 focus:ring-indigo-500"
-                :class="[fieldClass]"
-                :placeholder="t('fileManage.metadataNotePlaceholder')"
-              ></textarea>
-            </label>
-            <label class="space-y-1">
-              <span class="text-xs font-medium" :class="[mutedTextClass]">
-                {{ t('fileManage.metadataTags') }}
-              </span>
-              <input
-                v-model="detailMetadataForm.tagsText"
-                type="text"
-                class="w-full rounded-lg border px-3 py-2 text-sm focus:border-transparent focus:ring-2 focus:ring-indigo-500"
-                :class="[fieldClass]"
-                :placeholder="t('fileManage.metadataTagsPlaceholder')"
-              />
-              <span class="block text-xs" :class="[mutedTextClass]">
-                {{
-                  selectedFileDetail.metadataUpdatedAt
-                    ? t('fileManage.metadataUpdatedAt', {
-                        time: formatMetadataUpdatedAt(selectedFileDetail.metadataUpdatedAt)
-                      })
-                    : t('fileManage.metadataNeverUpdated')
-                }}
-              </span>
-            </label>
-          </div>
-        </section>
-
         <section
           class="theme-2026-card-hover rounded-[30px] border px-4 py-4 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg"
           :class="getInsightPanelClass(selectedFileDetail.statusInsightSeverity)"
@@ -1046,15 +982,32 @@
         </section>
 
         <section v-if="selectedFileDetail.detailTimeline.length > 0" class="space-y-3">
-          <h4 class="text-sm font-semibold" :class="[primaryTextClass]">
-            {{ t('fileManage.lifecycle') }}
-          </h4>
+          <div class="flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between">
+            <h4 class="text-sm font-semibold" :class="[primaryTextClass]">
+              {{ t('fileManage.lifecycle') }}
+            </h4>
+            <button
+              v-if="selectedFileDetail.detailTimeline.length > 3"
+              type="button"
+              class="inline-flex min-h-11 items-center self-start rounded-lg border px-3 py-2 text-sm font-medium transition-colors sm:min-h-0 sm:self-auto"
+              :class="detailActionClass"
+              @click="isLifecycleExpanded = !isLifecycleExpanded"
+            >
+              {{
+                isLifecycleExpanded
+                  ? t('fileManage.collapseLifecycle')
+                  : t('fileManage.expandLifecycle', {
+                      count: selectedFileDetail.detailTimeline.length
+                    })
+              }}
+            </button>
+          </div>
           <div
             class="rounded-[30px] border px-4 py-4 shadow-md"
             :class="[isDarkMode ? 'border-gray-700 bg-gray-700/30' : 'border-gray-200 bg-white']"
           >
             <div
-              v-for="(item, index) in selectedFileDetail.detailTimeline"
+              v-for="(item, index) in visibleDetailTimeline"
               :key="`${item.key}-${index}`"
               class="grid grid-cols-[auto_minmax(0,1fr)] gap-3"
             >
@@ -1064,7 +1017,7 @@
                   :class="getTimelineDotClass(item.severity)"
                 />
                 <span
-                  v-if="index < selectedFileDetail.detailTimeline.length - 1"
+                  v-if="index < visibleDetailTimeline.length - 1"
                   class="my-1 w-px flex-1"
                   :class="[isDarkMode ? 'bg-gray-600' : 'bg-gray-200']"
                 />
@@ -1091,6 +1044,70 @@
           </div>
         </section>
 
+        <section
+          class="theme-2026-card-hover space-y-3 rounded-[30px] border px-4 py-4 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg"
+          :class="[subtleSectionClass, cardHoverClass]"
+        >
+          <div class="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
+            <div>
+              <h4 class="text-sm font-semibold" :class="[primaryTextClass]">
+                {{ t('fileManage.metadataInfo') }}
+              </h4>
+              <p class="mt-1 text-xs" :class="[mutedTextClass]">
+                {{ t('fileManage.metadataHint') }}
+              </p>
+            </div>
+            <BaseButton
+              size="sm"
+              :loading="isDetailMetadataSaving"
+              :disabled="isDetailLoading"
+              @click="updateDetailMetadata"
+            >
+              <template #icon>
+                <CheckIcon class="mr-2 h-4 w-4" />
+              </template>
+              {{ t('fileManage.saveMetadata') }}
+            </BaseButton>
+          </div>
+
+          <div class="grid gap-3 lg:grid-cols-[minmax(0,1fr)_minmax(220px,0.55fr)]">
+            <label class="space-y-1">
+              <span class="text-xs font-medium" :class="[mutedTextClass]">
+                {{ t('fileManage.metadataNote') }}
+              </span>
+              <textarea
+                v-model="detailMetadataForm.note"
+                rows="3"
+                maxlength="2000"
+                class="w-full resize-y rounded-lg border px-3 py-2 text-sm focus:border-transparent focus:ring-2 focus:ring-indigo-500"
+                :class="[fieldClass]"
+                :placeholder="t('fileManage.metadataNotePlaceholder')"
+              ></textarea>
+            </label>
+            <label class="space-y-1">
+              <span class="text-xs font-medium" :class="[mutedTextClass]">
+                {{ t('fileManage.metadataTags') }}
+              </span>
+              <input
+                v-model="detailMetadataForm.tagsText"
+                type="text"
+                class="w-full rounded-lg border px-3 py-2 text-sm focus:border-transparent focus:ring-2 focus:ring-indigo-500"
+                :class="[fieldClass]"
+                :placeholder="t('fileManage.metadataTagsPlaceholder')"
+              />
+              <span class="block text-xs" :class="[mutedTextClass]">
+                {{
+                  selectedFileDetail.metadataUpdatedAt
+                    ? t('fileManage.metadataUpdatedAt', {
+                        time: formatMetadataUpdatedAt(selectedFileDetail.metadataUpdatedAt)
+                      })
+                    : t('fileManage.metadataNeverUpdated')
+                }}
+              </span>
+            </label>
+          </div>
+        </section>
+
         <section class="space-y-3">
           <h4 class="text-sm font-semibold" :class="[primaryTextClass]">
             {{ t('fileManage.storageInfo') }}
@@ -1572,6 +1589,11 @@ const {
 } = useAdminFiles()
 
 const isFilterPanelOpen = ref(false)
+const isLifecycleExpanded = ref(false)
+const visibleDetailTimeline = computed(() => {
+  const rows = selectedFileDetail.value?.detailTimeline || []
+  return isLifecycleExpanded.value ? rows : rows.slice(0, 3)
+})
 const filterBodyVisible = computed(() => isFilterPanelOpen.value || hasActiveFilters.value)
 const isHistoryLoading = ref(false)
 const historyRows = ref<AnalyticsFileRow[]>([])
@@ -2051,6 +2073,13 @@ const getTimelineDotClass = (severity: AdminFileInsightSeverity) => {
   return classes[severity]
 }
 
+watch(
+  () => selectedFileDetail.value?.id,
+  () => {
+    isLifecycleExpanded.value = false
+  }
+)
+
 watch(
   () => route.query.health,
   async () => {