docs(selfhost): correct WebSocket guidance for LAN access

The previous note claimed the frontend's auto-derived WebSocket URL
worked on LAN without extra configuration. It does not: Next.js
`rewrites()` only proxy HTTP requests, so the `Upgrade` handshake
required for WebSocket never reaches the Go backend, and real-time
features (chat streaming, live issue updates, notifications) silently
fail when accessing the app via a non-localhost host.

Replace the incorrect sentence with a dedicated subsection that points
users at the reverse-proxy recipe (already documented above, includes
the correct /ws Upgrade headers) and, for setups without a proxy,
documents the build-time NEXT_PUBLIC_WS_URL + selfhost.build.yml
override path.

Refs: GH #1522

README.md

@@ -185,3 +185,13 @@ 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

@@ -172,3 +172,13 @@ 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>