v3.1.0

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1. feat: 键鼠模式快捷键支持鼠标左右键识别
2. feat: 输入框聚焦时高亮
3. feat: 新增 ⌘L 输入框聚焦快捷键
4. fix: 修复键鼠模式子状态保持问题
5. style: 优化侧边栏图标

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1. feat: Add left & right click recognition for shortcuts in keyboard-mouse mode.
2. feat: Highlight input box when focused.
3. feat: Add ⌘L shortcut for input focus.
4. fix: Fix child state retention issue in keyboard-mouse mode.
5. style: Refine sidebar icons.