fix(parser): harden runtime resource handling

parser/src/main/java/cn/qaiu/WebClientVertxInit.java

@@ -7,12 +7,15 @@ import org.slf4j.LoggerFactory;
 import cn.qaiu.parser.custom.CustomParserRegistry;
 
 public class WebClientVertxInit {
-    private Vertx vertx = null;
+    private volatile Vertx vertx = null;
     private static final WebClientVertxInit INSTANCE = new WebClientVertxInit();
 
     private static final Logger log = LoggerFactory.getLogger(WebClientVertxInit.class);
 
-    public static void init(Vertx vx) {
+    public static synchronized void init(Vertx vx) {
+        if (vx == null) {
+            throw new IllegalArgumentException("Vertx instance must not be null");
+        }
         INSTANCE.vertx = vx;
         
         // 自动加载JavaScript解析器脚本
@@ -23,18 +26,10 @@ public class WebClientVertxInit {
         }
     }
 
-    public static Vertx get() {
+    public static synchronized Vertx get() {
         if (INSTANCE.vertx == null) {
-            log.info("getVertx: Vertx实例不存在, 创建Vertx实例.");
-            INSTANCE.vertx = Vertx.vertx();
-            
-            // 如果Vertx实例是新创建的，也尝试加载JavaScript脚本
-            try {
-                CustomParserRegistry.autoLoadJsScripts();
-            } catch (Exception e) {
-                log.warn("自动加载JavaScript解析器脚本失败", e);
-            }
+            throw new IllegalStateException("Vertx实例未初始化，请先调用 WebClientVertxInit.init(vertx)");
         }
         return INSTANCE.vertx;
     }
-}
+}