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/doc_cloud_keeper/doc_cloud_keeper.css

@@ -889,6 +889,24 @@
   background: #bfdbfe;
 }
 
+.dck-copy-title-btn {
+  display: inline-block;
+  min-width: 24px;
+  padding: 1px 5px;
+  border: none;
+  border-radius: 999px;
+  background: #dbeafe;
+  color: #111827;
+  font-size: 13px;
+  line-height: 1.4;
+  cursor: pointer;
+  vertical-align: middle;
+}
+
+.dck-copy-title-btn:hover {
+  background: #bfdbfe;
+}
+
 .dck-preview-body {
   padding: 0;
   border-radius: 0;

public/tools/doc_cloud_keeper/doc_cloud_keeper.js

@@ -733,6 +733,7 @@ const dck = (() => {
           ${parentFolderName ? `<span class="dck-doc-parent-tag" title="直属父目录：${esc(parentFolderName)}">${esc(parentFolderName)}</span>` : ''}
           <button type="button" class="dck-preview-btn" data-doc-id="${r.id}" title="快速查看 ${esc(r.filename)}">👁</button>
           <button type="button" class="dck-version-count-tag" data-doc-id="${r.id}" title="查看 ${esc(r.filename)} 的历史版本">${versionCount}</button>
+          <button type="button" class="dck-copy-title-btn" data-doc-id="${r.id}" title="复制标题">📋</button>
         </span>
       `
       tr.innerHTML = `
@@ -797,6 +798,23 @@ const dck = (() => {
         await openPreview(doc)
       }
     })
+    Array.from(tb.querySelectorAll('.dck-copy-title-btn')).forEach(btn => {
+      btn.onclick = async e => {
+        e.stopPropagation()
+        const docId = Number(btn.dataset.docId || 0)
+        if (!docId) return
+        const doc = docs.find(item => Number(item.id) === docId)
+        if (!doc) return
+        try {
+          await copyText(doc.filename || '')
+          btn.textContent = '✅'
+          setTimeout(() => { btn.textContent = '📋' }, 1200)
+        } catch (err) {
+          btn.textContent = '⚠️'
+          setTimeout(() => { btn.textContent = '📋' }, 1200)
+        }
+      }
+    })
     renderBanner()
     updateActionButtonsState()
   }