fix: Command Mode state not accounting for focus state

[HellowVirgil]

Description

Please include a summary of the changes and the motivation behind them. Also, include any relevant context or links to related issues.

Type of Change

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• Bug fix
• New feature
• Documentation update
• Code refactoring
• Other (please describe):

Related Issues

Please list any issues related to this pull request (e.g., Fixes #123, Closes #456).

Testing

Please describe the tests that were performed to verify your changes. Include details about the testing framework, if applicable.

• Unit tests
• Integration tests
• Manual testing

Checklist

• My code follows the project’s coding style.
• I have updated the documentation as necessary.
• I have added tests to cover my changes.
• All new and existing tests pass.
• My changes require a change to the documentation.

Additional Notes

确保命令模式的启用和状态更新都检查了libroService.focus状态，避免在无焦点时错误启用命令模式