diff --git a/par-core/src/main/java/com/mediabot/site/PluginContext.java b/par-core/src/main/java/com/mediabot/site/PluginContext.java
new file mode 100644
index 0000000..b08ebb0
--- /dev/null
+++ b/par-core/src/main/java/com/mediabot/site/PluginContext.java
@@ -0,0 +1,20 @@
+package com.mediabot.site;
+
+/**
+ * PluginContext 桩类（mediabot 命名空间），仅供 PAR Groovy 编译通过。
+ * 实际运行时由 mediabot 注入真实实现。
+ */
+@SuppressWarnings("unused")
+public class PluginContext {
+    public Site site;
+    public Object httpClient;
+
+    public Object httpGet(String path) { return null; }
+    public Object httpPost(String path, String body) { return null; }
+
+    public static class Site {
+        public String authorization;
+        public String auth;
+        public String siteUrl;
+    }
+}