docs: sync core references in README with detailed documentation

- Match the core reference lists in  and  with the newly updated  and .
- Replace older extended references with the new core articles from LangChain, Martin Fowler, and Cursor.

Author: sanbuphy

README-CN.md

@@ -484,11 +484,10 @@ npm run docs:preview    # 预览构建结果
 - [Anthropic: Effective harnesses for long-running agents](https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents)
 - [Anthropic: Harness design for long-running application development](https://www.anthropic.com/engineering/harness-design-long-running-apps)
 - [OpenAI: Unrolling the Codex agent loop](https://openai.com/index/unrolling-the-codex-agent-loop/)
-- [OpenAI: Unlocking the Codex harness: how we built the App Server](https://openai.com/index/unlocking-the-codex-harness/)
 - [Anthropic: Demystifying evals for AI agents](https://www.anthropic.com/engineering/demystifying-evals-for-ai-agents)
-- [Anthropic: Building a C compiler with a team of parallel Claudes](https://www.anthropic.com/engineering/building-c-compiler)
-- [Anthropic: Scaling Managed Agents: Decoupling the brain from the hands](https://www.anthropic.com/engineering/managed-agents)
-- [OpenAI: An open-source spec for Codex orchestration: Symphony](https://openai.com/index/open-source-codex-orchestration-symphony/)
+- [LangChain: Improving Deep Agents with harness engineering](https://www.langchain.com/blog/improving-deep-agents-with-harness-engineering)
+- [Thoughtworks / Martin Fowler: Harness engineering for coding agent users](https://martinfowler.com/articles/harness-engineering.html)
+- [Cursor: Continually improving our agent harness](https://cursor.com/blog/continually-improving-agent-harness)
 
 完整分层参考列表见 [`docs/zh/resources/reference/`](./docs/zh/resources/reference/index.md)。
 

README.md

@@ -483,11 +483,10 @@ Primary:
 - [Anthropic: Effective harnesses for long-running agents](https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents)
 - [Anthropic: Harness design for long-running application development](https://www.anthropic.com/engineering/harness-design-long-running-apps)
 - [OpenAI: Unrolling the Codex agent loop](https://openai.com/index/unrolling-the-codex-agent-loop/)
-- [OpenAI: Unlocking the Codex harness: how we built the App Server](https://openai.com/index/unlocking-the-codex-harness/)
 - [Anthropic: Demystifying evals for AI agents](https://www.anthropic.com/engineering/demystifying-evals-for-ai-agents)
-- [Anthropic: Building a C compiler with a team of parallel Claudes](https://www.anthropic.com/engineering/building-c-compiler)
-- [Anthropic: Scaling Managed Agents: Decoupling the brain from the hands](https://www.anthropic.com/engineering/managed-agents)
-- [OpenAI: An open-source spec for Codex orchestration: Symphony](https://openai.com/index/open-source-codex-orchestration-symphony/)
+- [LangChain: Improving Deep Agents with harness engineering](https://www.langchain.com/blog/improving-deep-agents-with-harness-engineering)
+- [Thoughtworks / Martin Fowler: Harness engineering for coding agent users](https://martinfowler.com/articles/harness-engineering.html)
+- [Cursor: Continually improving our agent harness](https://cursor.com/blog/continually-improving-agent-harness)
 
 See the full layered reference list in [`docs/en/resources/reference/`](./docs/en/resources/reference/index.md).