fix: 修复注册指令组指令时的 Pyright 类型检查提示

[Soulter]

fixes #XYZ

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Motivation / 动机

修复注册指令组指令时的 Pyright 类型检查提示

Modifications / 改动点

Verification Steps / 验证步骤

Screenshots or Test Results / 运行截图或测试结果

Compatibility & Breaking Changes / 兼容性与破坏性变更

• 这是一个破坏性变更 (Breaking Change)。/ This is a breaking change.
• 这不是一个破坏性变更。/ This is NOT a breaking change.

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Checklist / 检查清单

• 😊 如果 PR 中有新加入的功能，已经通过 Issue / 邮件等方式和作者讨论过。/ If there are new features added in the PR, I have discussed it with the authors through issues/emails, etc.
• 👀 我的更改经过了良好的测试，并已在上方提供了“验证步骤”和“运行截图”。/ My changes have been well-tested, and "Verification Steps" and "Screenshots" have been provided above.
• 🤓 我确保没有引入新依赖库，或者引入了新依赖库的同时将其添加到了 requirements.txt 和 pyproject.toml 文件相应位置。/ I have ensured that no new dependencies are introduced, OR if new dependencies are introduced, they have been added to the appropriate locations in requirements.txt and pyproject.toml.
• 😮 我的更改没有引入恶意代码。/ My changes do not introduce malicious code.

Sourcery 摘要

通过添加显式类型注解和错误处理，修复命令组注册中的 Pyright 类型检查问题

错误修复：

• 当命令组注册失败时，抛出 ValueError 而不是静默返回

改进：

• 为 RegisteringCommandable 类属性添加显式 Callable 类型注解以满足 Pyright 类型检查

Original summary in English

Summary by Sourcery

Fix Pyright type checking issues in command group registration by adding explicit type annotations and error handling

Bug Fixes:

• Raise ValueError when command group registration fails instead of silently returning

Enhancements:

• Add explicit Callable type annotations for RegisteringCommandable class attributes to satisfy Pyright type checks

[sourcery-ai]

你好，我已经审阅了你的修改，它们看起来很棒！

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Original comment in English

Hey there - I've reviewed your changes and they look great!

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