v1.4.1

Changed

• The release script bumps both plugin manifests, the builder.md stamp, and the changelog in lockstep with the CLI. scripts/release.sh gained a --lockstep mode (skips the confirm prompt, tolerates an empty [Unreleased] for a CLI-only release) and now also stamps agents/builder.md. The normal entry point is the CLI repo's scripts/release.sh, which invokes this with --lockstep so both repos release at the same version.