feat: 新增多项功能并添加新工具

- 私人剪贴板新增限时直通URL生成功能
- doc_cloud_keeper新增标题复制按钮
- 新增贪蛇出动游戏工具
- 新增OSS中转直链工具
- 添加批量抽帧测试脚本

public/tools/private_clipboard/clipboard.css

@@ -640,21 +640,35 @@ body {
 
 .pc-image-thumb {
   width: 100%;
-  height: 180px;
   border-radius: 10px;
   border: 1px solid rgba(63, 70, 89, 0.4);
   background: rgba(18, 20, 28, 0.7);
   overflow: hidden;
   cursor: zoom-in;
+  display: flex;
+  flex-direction: column;
 }
 
 .pc-image-thumb img {
   width: 100%;
-  height: 100%;
+  height: 180px;
   object-fit: cover;
   display: block;
 }
 
+.pc-image-thumb-actions {
+  display: flex;
+  gap: 8px;
+  padding: 8px;
+  border-top: 1px solid rgba(63, 70, 89, 0.35);
+  background: rgba(14, 16, 22, 0.7);
+}
+
+.pc-image-thumb-actions .btn {
+  font-size: 12px;
+  padding: 5px 10px;
+}
+
 .pc-image-grid {
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));