feat: 默认脚本编辑弹窗+后端读写default脚本接口

par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java

@@ -43,6 +43,23 @@ public class GroovyScriptEngine {
         return null; // placeholder, 由 AdapterController 实现具体逻辑
     }
 
+    /**
+     * 保存站点类型默认脚本到 classpath
+     */
+    public static void saveDefaultScript(String siteType, String script) {
+        if (siteType == null || script == null) return;
+        String key = siteType.toLowerCase();
+        DEFAULT_SCRIPTS.put(key, script);
+        try {
+            var path = java.nio.file.Paths.get(
+                    GroovyScriptEngine.class.getClassLoader().getResource("scripts/default-" + key + ".groovy").toURI());
+            java.nio.file.Files.writeString(path, script, java.nio.charset.StandardCharsets.UTF_8);
+            log.info("Default script saved: default-{}.groovy", key);
+        } catch (Exception e) {
+            log.error("Failed to save default script: {}", key, e);
+        }
+    }
+
     /**
      * 从 classpath 加载默认脚本文件
      */