- Delete old RuoYi scripts: bin/*.bat, ry.bat, ry.sh - Delete empty directories: controller/, service/impl/, static/, templates/ - Delete unused mybatis-config.xml (Spring Boot auto-configures MyBatis) - Remove unused Maven dependencies: fastjson2, poi-ooxml - Clean root pom.xml: remove bitwalker, kaptcha, oshi, velocity, poi, fastjson2 version management Build verified: mvn clean package passes.