Address review on #1487: - Scope the marker write to runtime === 'claude' && isGlobal, matching issue #1477. The Claude global skills layout is the only install path that ships the skills layout without a commands/gsd source tree; every other runtime/scope deploys commands/gsd, so walk-up already resolves. - Add the trailing (#1487) reference to the changeset body per PRED.k329.body. Claude-Session: https://claude.ai/code/session_01XNT3SWgzjmEycNuweURDme