feat: differentiate core and plugin classes by ClassLoader to avoid shadowing

改用 StackWalker(RETAIN_CLASS_REFERENCE) 在判定时获取栈帧真实 Class 的 ClassLoader，仅 PluginClassLoader 加载的类才可能判为可疑；伪造官方包名的插件被拦截，官方同名类不再被连坐。编译目标升至 Java 11。

pom.xml

@@ -6,11 +6,11 @@
 
     <groupId>com.novitechie</groupId>
     <artifactId>plugin-privacy</artifactId>
-    <version>1.1.0</version>
+    <version>1.2.0</version>
 
     <properties>
-        <maven.compiler.source>8</maven.compiler.source>
-        <maven.compiler.target>8</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
     <build>
@@ -20,8 +20,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.7.0</version>
                 <configuration>
-                    <source>8</source>
-                    <target>8</target>
+                    <source>11</source>
+                    <target>11</target>
                     <encoding>UTF-8</encoding>
                     <compilerArgument>-XDignore.symbol.file</compilerArgument>
                     <fork>true</fork>
@@ -65,7 +65,13 @@
             <artifactId>ja-netfilter</artifactId>
             <version>2025.3.0</version>
             <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>com.sun</groupId>
+                    <artifactId>tools</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
     </dependencies>
 
-</project>
+</project>