docs(protocol): clarify timeout and on_error behavior for entry node

[Craun718]

神秘 feature +1

Summary by Sourcery

澄清关于流水线节点配置的文档说明，尤其是入口节点的超时和错误处理行为。

文档更新内容：

• 说明在流水线定义中，节点名称作为全局唯一标识符使用。
• 澄清对于入口节点而言，timeout 设置同时控制其自身的识别等待时间。
• 澄清对于入口节点而言，识别失败会触发其自身的 on_error 列表执行。

Original summary in English

Summary by Sourcery

Clarify documentation for pipeline node configuration, particularly timeout and error handling behavior for entry nodes.

Documentation:

• Document that node names act as globally unique identifiers in pipeline definitions.
• Clarify that for entry nodes, the timeout setting also controls their own recognition wait time.
• Clarify that for entry nodes, failed recognition leads to their own on_error list being executed.

[sourcery-ai]

嗨，我已经查看了你的更改，看起来非常棒！

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Original comment in English

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

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