docs: switch community section to ultraworkers discord

README.md

@@ -168,12 +168,12 @@ The restructuring and documentation work on this repository was AI-assisted and
 ## Community
 
 <p align="center">
-  <a href="https://instruct.kr/"><img src="assets/instructkr.png" alt="instructkr" width="400" /></a>
+  <a href="https://discord.gg/6ztZB9jvWq"><img src="https://img.shields.io/badge/UltraWorkers-Discord-5865F2?logo=discord&style=for-the-badge" alt="UltraWorkers Discord" /></a>
 </p>
 
-Join the [**instructkr Discord**](https://instruct.kr/) — the best Korean language model community. Come chat about LLMs, harness engineering, agent workflows, and everything in between.
+Join the [**UltraWorkers Discord**](https://discord.gg/6ztZB9jvWq) — the community around clawhip, oh-my-openagent, oh-my-claudecode, oh-my-codex, and claw-code. Come chat about LLMs, harness engineering, agent workflows, and autonomous software development.
 
-[![Discord](https://img.shields.io/badge/Join%20Discord-instruct.kr-5865F2?logo=discord&style=for-the-badge)](https://instruct.kr/)
+[![Discord](https://img.shields.io/badge/Join%20Discord-UltraWorkers-5865F2?logo=discord&style=for-the-badge)](https://discord.gg/6ztZB9jvWq)
 
 ## Star History