Restore a complete, clearly-labeled legacy path (setup-java gpg-private-key/ gpg-passphrase inputs) for maven-gpg-plugin < 3.2.0 or the gpg executable: full workflow YAML, the generated gpg.passphrase server, and the --pinentry-mode loopback pom.xml snippet. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 50be9bf4-3414-43f2-8454-03c2d9e61973