feat: introduce WebSocket sync for XBoard nodes

- Implement Workerman-based `xboard:ws-server` for real-time node synchronization.
- Support custom routes, outbounds, and certificate configurations via JSON.
- Optimize scheduled tasks with `lazyById` to minimize memory footprint.
- Enhance reactivity using Observers for `Plan`, `Server`, and `ServerRoute`.
- Expand protocol support for `httpupgrade`, `h2`, and `mieru`.

docs/en/installation/aapanel.md

@@ -172,4 +172,38 @@ sh update.sh
 1. Changes to admin path require service restart to take effect
 2. Any code changes after enabling Octane require restart to take effect
 3. When PHP extension installation fails, check if PHP version is correct
-4. For database connection failures, check database configuration and permissions 
+4. For database connection failures, check database configuration and permissions
+
+## Enable WebSocket Real-time Sync (Optional)
+
+WebSocket enables real-time synchronization of configurations and user changes to nodes.
+
+### 1. Start WS Server
+
+Add a WebSocket daemon process in aaPanel Supervisor:
+- Name: `Xboard-WS`
+- Run User: `www`
+- Running Directory: Site directory
+- Start Command: `php artisan xboard:ws-server start`
+- Process Count: 1
+
+### 2. Configure Nginx
+
+Add the WebSocket location **before** the main `location ^~ /` block in your site's Nginx configuration:
+```nginx
+location /ws/ {
+    proxy_pass http://127.0.0.1:8076;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_read_timeout 60s;
+}
+```
+
+### 3. Restart Services
+
+Restart the Octane and WS Server processes in Supervisor.
+
+> The node will automatically detect WebSocket availability during handshake. No extra configuration is needed on the node side.