docs: Correct translation of 'agent' to 'intelligent agent' for AI context

[fluteink]

Summary

This PR updates the translation of agent from “代理” (proxy/agent) to “智能体” (intelligent agent) to align with standard terminology in the context of Artificial Intelligence (AI) and machine learning.

Reasoning for Change

In the fields of AI and computer science, the term agent specifically refers to an entity that can autonomously perceive its environment, make decisions, and take actions to achieve goals. The standard and most accurate translation for this concept is “智能体” (intelligent agent).

The previous translation, “代理” (dàilǐ), is more commonly associated with concepts like a network proxy or a legal representative in a Chinese technical context, which can cause confusion.

This change ensures the documentation is both precise and professional for its intended audience.

[vercel]

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