fix(pom): normalize pom.xml per java-component-patterns

- Remove source/target, use release only
- Fix maven.version per branch
- Fix enforcer requireMavenVersion for Maven 4 (3.0.x)
- Fix java.version values
- Fix maven-wrapper.properties
- Add properties 3-part comments

Author: loong10k

.mvn/wrapper/maven-wrapper.properties

@@ -1 +1,3 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip
+wrapperVersion=3.3.4
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.16/apache-maven-3.9.16-bin.zip

pom.xml

@@ -86,10 +86,6 @@
                     <artifactId>maven-compiler-plugin</artifactId>
                     <version>${maven-compiler-plugin.version}</version>
                     <configuration>
-                        <!-- 源代码编译版本 -->
-                        <source>${java.version}</source>
-                        <!-- 目标平台编译版本 -->
-                        <target>${java.version}</target>
                         <!-- 字符集编码 -->
                         <encoding>${project.build.sourceEncoding}</encoding>
                         <!-- 编译最大内存 -->
@@ -338,8 +334,6 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>${maven-compiler-plugin.version}</version>
                 <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
                     <!-- 保留方法参数名，支持 Spring MVC 按参数名绑定 -->
                     <parameters>true</parameters>
                     <encoding>${project.build.sourceEncoding}</encoding>
@@ -507,11 +501,10 @@
 
     <!-- 版本属性定义：Java 版本、依赖版本与 Maven 插件版本统一管理 -->
     <properties>
-        <java.version>8</java.version>
+        <!-- ═══ 第一段: 基础属性（自然排序）═══ -->
+        <java.version>1.8</java.version>
         <maven.compiler.release>${java.version}</maven.compiler.release>
-        <maven.compiler.source>${java.version}</maven.compiler.source>
-        <maven.compiler.target>${java.version}</maven.compiler.target>
-        <maven.version>3.0</maven.version>
+        <maven.version>3.9.16</maven.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <!-- Dependency versions -->
         <antlr4.version>4.7.1</antlr4.version>