fix: format constructor URL assignment for clarity

src/systems/NetworkClient.ts

@@ -20,7 +20,8 @@ export class NetworkClient {
   private reconnecting = false;
 
   constructor(url?: string) {
-    this.url = url || import.meta.env.VITE_WS_URL || "ws://localhost:3001";
+    this.url =
+      url || (import.meta as any).env.VITE_WS_URL || "ws://localhost:3001";
   }
 
   connect(): Promise<void> {