chore: 移除所有 emoji 及对标文案

- 删除全部文件中的 emoji 字符（29 个文件）
- 移除 tui.py 中「对标 Claude Code」表述
- 保持代码缩进和格式不变

skills/file-manager/SKILL.md

@@ -148,7 +148,7 @@ del filename.txt
 rmdir /s /q directory_name
 ```
 
-⚠️ **Warning**: Deletion is permanent. Always confirm before deleting.
+ **Warning**: Deletion is permanent. Always confirm before deleting.
 
 ### Copy File or Directory