feat(frontend): 优化弹窗组件架构和用户体验

- 使用 BaseDialog 替代旧版 Modal 组件
- 添加平滑过渡动画和更好的可访问性支持
- 新增 ExportProgressDialog 导出进度弹窗
- 优化所有账号管理和使用记录相关弹窗
- 更新国际化文案，改进用户交互体验
- 精简依赖，减少 package.json 体积

frontend/src/views/user/UsageView.vue

@@ -219,6 +219,7 @@
           </template>
 
           <template #cell-tokens="{ row }">
+            <div class="flex items-center gap-1.5">
               <div class="space-y-1.5 text-sm">
                 <!-- Input / Output Tokens -->
                 <div class="flex items-center gap-2">
@@ -306,6 +307,29 @@
                   </div>
                 </div>
               </div>
+              <!-- Token Detail Tooltip -->
+              <div
+                class="group relative"
+                @mouseenter="showTokenTooltip($event, row)"
+                @mouseleave="hideTokenTooltip"
+              >
+                <div
+                  class="flex h-4 w-4 cursor-help items-center justify-center rounded-full bg-gray-100 transition-colors group-hover:bg-blue-100 dark:bg-gray-700 dark:group-hover:bg-blue-900/50"
+                >
+                  <svg
+                    class="h-3 w-3 text-gray-400 group-hover:text-blue-500 dark:text-gray-500 dark:group-hover:text-blue-400"
+                    fill="currentColor"
+                    viewBox="0 0 20 20"
+                  >
+                    <path
+                      fill-rule="evenodd"
+                      d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z"
+                      clip-rule="evenodd"
+                    />
+                  </svg>
+                </div>
+              </div>
+            </div>
           </template>
 
           <template #cell-cost="{ row }">
@@ -392,6 +416,54 @@
     </TablePageLayout>
   </AppLayout>
 
+  <!-- Token Tooltip Portal -->
+  <Teleport to="body">
+    <div
+      v-if="tokenTooltipVisible"
+      class="fixed z-[9999] pointer-events-none -translate-y-1/2"
+      :style="{
+        left: tokenTooltipPosition.x + 'px',
+        top: tokenTooltipPosition.y + 'px'
+      }"
+    >
+      <div
+        class="whitespace-nowrap rounded-lg border border-gray-700 bg-gray-900 px-3 py-2.5 text-xs text-white shadow-xl dark:border-gray-600 dark:bg-gray-800"
+      >
+        <div class="space-y-1.5">
+          <!-- Token Breakdown -->
+          <div class="mb-2 border-b border-gray-700 pb-1.5">
+            <div class="text-xs font-semibold text-gray-300 mb-1">Token 明细</div>
+            <div v-if="tokenTooltipData && tokenTooltipData.input_tokens > 0" class="flex items-center justify-between gap-4">
+              <span class="text-gray-400">{{ t('admin.usage.inputTokens') }}</span>
+              <span class="font-medium text-white">{{ tokenTooltipData.input_tokens.toLocaleString() }}</span>
+            </div>
+            <div v-if="tokenTooltipData && tokenTooltipData.output_tokens > 0" class="flex items-center justify-between gap-4">
+              <span class="text-gray-400">{{ t('admin.usage.outputTokens') }}</span>
+              <span class="font-medium text-white">{{ tokenTooltipData.output_tokens.toLocaleString() }}</span>
+            </div>
+            <div v-if="tokenTooltipData && tokenTooltipData.cache_creation_tokens > 0" class="flex items-center justify-between gap-4">
+              <span class="text-gray-400">{{ t('admin.usage.cacheCreationTokens') }}</span>
+              <span class="font-medium text-white">{{ tokenTooltipData.cache_creation_tokens.toLocaleString() }}</span>
+            </div>
+            <div v-if="tokenTooltipData && tokenTooltipData.cache_read_tokens > 0" class="flex items-center justify-between gap-4">
+              <span class="text-gray-400">{{ t('admin.usage.cacheReadTokens') }}</span>
+              <span class="font-medium text-white">{{ tokenTooltipData.cache_read_tokens.toLocaleString() }}</span>
+            </div>
+          </div>
+          <!-- Total -->
+          <div class="flex items-center justify-between gap-6 border-t border-gray-700 pt-1.5">
+            <span class="text-gray-400">{{ t('usage.totalTokens') }}</span>
+            <span class="font-semibold text-blue-400">{{ ((tokenTooltipData?.input_tokens || 0) + (tokenTooltipData?.output_tokens || 0) + (tokenTooltipData?.cache_creation_tokens || 0) + (tokenTooltipData?.cache_read_tokens || 0)).toLocaleString() }}</span>
+          </div>
+        </div>
+        <!-- Tooltip Arrow (left side) -->
+        <div
+          class="absolute right-full top-1/2 h-0 w-0 -translate-y-1/2 border-b-[6px] border-r-[6px] border-t-[6px] border-b-transparent border-r-gray-900 border-t-transparent dark:border-r-gray-800"
+        ></div>
+      </div>
+    </div>
+  </Teleport>
+
   <!-- Tooltip Portal -->
   <Teleport to="body">
     <div
@@ -458,6 +530,11 @@ const tooltipVisible = ref(false)
 const tooltipPosition = ref({ x: 0, y: 0 })
 const tooltipData = ref<UsageLog | null>(null)
 
+// Token tooltip state
+const tokenTooltipVisible = ref(false)
+const tokenTooltipPosition = ref({ x: 0, y: 0 })
+const tokenTooltipData = ref<UsageLog | null>(null)
+
 // Usage stats from API
 const usageStats = ref<UsageStatsResponse | null>(null)
 
@@ -778,6 +855,22 @@ const hideTooltip = () => {
   tooltipData.value = null
 }
 
+// Token tooltip functions
+const showTokenTooltip = (event: MouseEvent, row: UsageLog) => {
+  const target = event.currentTarget as HTMLElement
+  const rect = target.getBoundingClientRect()
+
+  tokenTooltipData.value = row
+  tokenTooltipPosition.value.x = rect.right + 8
+  tokenTooltipPosition.value.y = rect.top + rect.height / 2
+  tokenTooltipVisible.value = true
+}
+
+const hideTokenTooltip = () => {
+  tokenTooltipVisible.value = false
+  tokenTooltipData.value = null
+}
+
 onMounted(() => {
   loadApiKeys()
   loadUsageLogs()