docs: add UAYOR disclaimer for proxy-based provider access

Some providers (notably Anthropic/Claude) may suspend accounts that
route API traffic through third-party proxies. Add a clear disclaimer
to all three READMEs and the docs-site landing page.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: lidge-jun

README.ko.md

@@ -210,6 +210,12 @@ bun x tsc --noEmit   # 타입 체크
 
 **[기여하기](https://lidge-jun.github.io/opencodex/ko/contributing/)** 를 참고하세요.
 
+## 면책 조항
+
+opencodex는 독립적인 커뮤니티 프로젝트이며, **OpenAI, Anthropic 등 어떤 제공업체와도 제휴하거나 보증을 받지 않습니다.**
+
+일부 제공업체 — 특히 Anthropic (Claude) — 는 서드파티 프록시를 통한 API 트래픽 라우팅 시 계정을 정지하거나 제한할 수 있습니다. **사용에 따른 책임은 본인에게 있습니다 (UAYOR).** 제공업체를 연결하기 전에 해당 서비스 약관에서 프록시 기반 접근이 허용되는지 확인하세요. opencodex 유지보수자는 업스트림 제공업체의 계정 조치에 대해 책임을 지지 않습니다.
+
 ## 라이선스
 
 MIT

README.md

@@ -244,6 +244,12 @@ bun x tsc --noEmit   # typecheck
 
 See **[Contributing](https://lidge-jun.github.io/opencodex/contributing/)**.
 
+## Disclaimer
+
+opencodex is an independent, community-maintained project and is **not affiliated with or endorsed by OpenAI, Anthropic, or any other provider**.
+
+Some providers — notably Anthropic (Claude) — may suspend or restrict accounts that route API traffic through third-party proxies. **Use at your own risk (UAYOR).** Before connecting a provider, review its Terms of Service to confirm that proxy-based access is permitted. The opencodex maintainers are not responsible for any account actions taken by upstream providers.
+
 ## License
 
 MIT

README.zh-CN.md

@@ -214,6 +214,12 @@ bun x tsc --noEmit   # 类型检查
 
 参阅 **[贡献指南](https://lidge-jun.github.io/opencodex/zh-cn/contributing/)**。
 
+## 免责声明
+
+opencodex 是一个独立的社区维护项目，**与 OpenAI、Anthropic 或任何其他提供商无关，也未获得其认可。**
+
+某些提供商——尤其是 Anthropic (Claude)——可能会对通过第三方代理路由 API 流量的账户进行暂停或限制。**使用风险自负 (UAYOR)。** 在连接提供商之前，请查阅其服务条款以确认是否允许基于代理的访问。opencodex 维护者不对上游提供商采取的任何账户操作承担责任。
+
 ## 许可证
 
 MIT

docs-site/src/content/docs/index.mdx

@@ -80,6 +80,10 @@ ocx start
 codex "Write a hello world in Rust"
 ```
 
+:::caution[Disclaimer — Use at your own risk]
+opencodex is an independent community project, **not affiliated with or endorsed by OpenAI, Anthropic, or any other provider**. Some providers — notably Anthropic (Claude) — may suspend or restrict accounts that route API traffic through third-party proxies. Review each provider's Terms of Service before connecting. The opencodex maintainers are not responsible for any account actions taken by upstream providers.
+:::
+
 ## Where to next
 
 <CardGrid>