refactor: 优化智能分页检测和密钥复制交互

- 智能分页统一使用防抖检测避免与 ResizeObserver 双重触发
- 密钥名称仅在非空时启用复制功能
- 移除 API Key 不必要的危险字符校验

frontend/src/composables/useSmartPagination.ts

@@ -127,13 +127,13 @@ export function useSmartPagination<T>(
   function requestDetect() {
     pendingDetect = true
 
-    // 先尝试立即检测
+    // 先尝试立即检测（快路径），统一走防抖避免与 ResizeObserver 双重触发
     nextTick(() => {
       const el = listRef.value
       if (el && el.scrollHeight > 0) {
-        // DOM 已就绪，直接检测
+        // DOM 已就绪，通过防抖检测
         pendingDetect = false
-        detect()
+        debouncedDetect()
       }
       // 否则等待 ResizeObserver 回调
     })

frontend/src/features/providers/components/ProviderDetailDrawer.vue

@@ -235,9 +235,10 @@
                         <div class="flex flex-col min-w-0">
                           <div class="flex items-center gap-1.5">
                             <span
-                              class="text-sm font-medium truncate cursor-pointer hover:text-primary transition-colors"
-                              title="点击复制"
-                              @click.stop="copyToClipboard(key.name || '未命名密钥')"
+                              class="text-sm font-medium truncate"
+                              :class="key.name ? 'cursor-pointer hover:text-primary transition-colors' : ''"
+                              :title="key.name ? '点击复制' : ''"
+                              @click.stop="key.name && copyToClipboard(key.name)"
                             >{{ key.name || '未命名密钥' }}</span>
                             <!-- OAuth 订阅类型标签 (Codex) -->
                             <Badge