中文：

• 新增全界面字号调节，优化自适应布局、间距和滚动。
• 消息池新增编辑按钮和中英文变量提示。
• 编辑时显示颜色代码，浏览时显示实际颜色。
• 支持鼠标拖动选中文本，修复首行缺字、文本遮挡和部分字符显示异常。
• 优化界面刷新，减少重复绘制开销。

English:

• Added UI font-size controls and improved adaptive layouts, spacing, and scrolling.
• Added message-pool editing buttons and placeholder help.
• Color codes are shown while editing; colors are rendered when browsing.
• Added mouse-drag text selection and fixed missing characters, clipped text, and unsupported symbols.
• Optimized UI updates to reduce unnecessary redraws.