docs: remove Star History chart from README

README.md

@@ -185,13 +185,3 @@ make dev
 `make dev` auto-detects your environment (main checkout or worktree), creates the env file, installs dependencies, sets up the database, runs migrations, and starts all services.
 
 See [CONTRIBUTING.md](CONTRIBUTING.md) for the full development workflow, worktree support, testing, and troubleshooting.
-
-## Star History
-
-<a href="https://www.star-history.com/?repos=multica-ai%2Fmultica&type=date&legend=bottom-right">
-  <picture>
-    <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/chart?repos=multica-ai/multica&type=date&legend=top-left" />
-    <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/chart?repos=multica-ai/multica&type=date&legend=top-left" />
-    <img alt="Star History Chart" src="https://api.star-history.com/chart?repos=multica-ai/multica&type=date&legend=top-left" />
-  </picture>
-</a>

README.zh-CN.md

@@ -172,13 +172,3 @@ make start
 ## 开源协议
 
 [Apache 2.0](LICENSE)
-
-## Star History
-
-<a href="https://www.star-history.com/?repos=multica-ai%2Fmultica&type=date&legend=bottom-right">
-  <picture>
-    <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/chart?repos=multica-ai/multica&type=date&legend=top-left" />
-    <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/chart?repos=multica-ai/multica&type=date&legend=top-left" />
-    <img alt="Star History Chart" src="https://api.star-history.com/chart?repos=multica-ai/multica&type=date&legend=top-left" />
-  </picture>
-</a>