refactor: add connection health checks and cleanup

refactor: remove ioGame prefix from code examples

feat: add ParallelPublisher with virtual thread support

refactor: add final/volatile modifiers and null-check optimizations

refactor: optimize collections and modernize string formatting

refactor: use thread-safe collections and volatile fields

refactor: replace Objects.isNull/nonNull with direct null checks

refactor(common-kit): optimize ClassScanner with local classSet

feat(common-kit,core-framework): replace jansi with internal ANSI utility and add ClassVisitor

feat(doc,protobuf): replace QDox with JDK source parser

build: add Lombok delombok support for Javadoc

refactor(common-kit): improve ClassScanner robustness

docs(package-info)

docs: net-common,net-server,net-logic-server,net-center,extension-domain-event,extension-room,extension-client,extension-jprotobuf,extension-codegen,extension-spring,run-one

docs: common-kit, core-framework, external-core, external-netty comment pass