docs: add friend links to readmes

Author: lius-new

README.md

@@ -120,6 +120,10 @@ Issues and pull requests are welcome. If you are interested in contributing on a
 
 Additional core components are also being prepared for broader collaboration over time, including the runtime process (`simprint-runtime`) and the browser-kernel layer (`simprint-browser-kernel`). The long-term goal is to build a maintainable open ecosystem around Simprint rather than keep contribution limited to the client surface.
 
+## Friend Links
+
+- [LINUX DO - 新的理想型社区](https://linux.do/)
+
 ## License
 
 This project is licensed under the GNU Affero General Public License v3.0 (AGPLv3).

README.zh-CN.md

@@ -119,6 +119,10 @@ Simprint 目前正处于持续推进的开源迁移阶段，我们希望逐步
 
 包括运行时进程（`simprint-runtime`）和浏览器内核层（`simprint-browser-kernel`）在内的更多核心组件，后续也会逐步为更广泛的协作做准备。我们的长期目标不是只开放客户端表层代码，而是逐步建设一个可持续维护的 Simprint 开源生态。
 
+## Friend Links
+
+- [LINUX DO - 新的理想型社区](https://linux.do/)
+
 ## License
 
 本项目采用 GNU Affero General Public License v3.0 (AGPLv3) 进行许可。