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`.

app/Jobs/NodeUserSyncJob.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace App\Jobs;
+
+use App\Models\User;
+use App\Services\NodeSyncService;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Foundation\Bus\Dispatchable;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Queue\SerializesModels;
+
+class NodeUserSyncJob implements ShouldQueue
+{
+    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
+
+    public $tries = 2;
+    public $timeout = 10;
+
+    public function __construct(
+        private readonly int $userId,
+        private readonly string $action,
+        private readonly ?int $oldGroupId = null
+    ) {
+        $this->onQueue('notification');
+    }
+
+    public function handle(): void
+    {
+        $user = User::find($this->userId);
+
+        if ($this->action === 'updated' || $this->action === 'created') {
+            if ($this->oldGroupId) {
+                NodeSyncService::notifyUserRemovedFromGroup($this->userId, $this->oldGroupId);
+            }
+            if ($user) {
+                NodeSyncService::notifyUserChanged($user);
+            }
+        } elseif ($this->action === 'deleted') {
+            if ($this->oldGroupId) {
+                NodeSyncService::notifyUserRemovedFromGroup($this->userId, $this->oldGroupId);
+            }
+        }
+    }
+}