Tab Thumbnails

用途
- 把所有标签页以“缩略图网格”展示在当前页面之上，快速总览与定位。
- 支持一键扫描当前窗口并生成最新缩略图，便于对比与筛选。
- 提供快捷关闭、键盘导航等操作，减少来回切换的时间。

核心功能
- 视觉网格总览：当前窗口的所有标签以卡片形式展示。
- 一键扫描更新：确保缩略图与页面最新状态一致。
- 快速关闭标签：卡片左上角关闭按钮或中键点击关闭。

Purpose
• Display all open tabs in a thumbnail grid overlay, allowing quick overview and easy navigation.
• Support one-click scanning of the current window to generate up-to-date thumbnails for comparison and filtering.
• Provide quick close actions and keyboard navigation to reduce time spent switching between tabs.

Key Features
• Visual Grid Overview: All tabs in the current window are presented as cards in a clean grid layout.
• One-Click Refresh Scan: Keeps thumbnails synchronized with the latest page content.
• Fast Tab Closing: Close tabs instantly via the top-left close button on each card or by middle-clicking.