chore(release): bump version to 3.0.x.20260630

Author: loong10k

pom.xml

@@ -8,7 +8,7 @@
     <name>${project.groupId}:${project.artifactId}</name>
     <url>https://github.com/easy-4-java/${project.artifactId}</url>
     <description>Codex CLI Java SDK — subprocess integration for OpenAI Codex agent</description>
-    <version>3.0.x.20260630-SNAPSHOT</version>
+    <version>3.0.x.20260630</version>
     <packaging>jar</packaging>
     <licenses>
         <license>