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/Utils/CacheKey.php

@@ -26,6 +26,8 @@ class CacheKey
         'SERVER_*_LAST_PUSH_AT',       // 节点最后推送时间
         'SERVER_*_LOAD_STATUS',        // 节点负载状态
         'SERVER_*_LAST_LOAD_AT',       // 节点最后负载提交时间
+        'SERVER_*_METRICS',            // 节点指标数据
+        'USER_ONLINE_CONN_*_*',        // 用户在线连接数 (特定节点类型_ID)
     ];
 
     /**
@@ -57,7 +59,7 @@ class CacheKey
     private static function matchesPattern(string $key): bool
     {
         foreach (self::ALLOWED_PATTERNS as $pattern) {
-            $regex = '/^' . str_replace('*', '[A-Z_]+', $pattern) . '$/';
+            $regex = '/^' . str_replace('*', '[A-Za-z0-9_]+', $pattern) . '$/';
             if (preg_match($regex, $key)) {
                 return true;
             }