pnpm deploy's final temp-dir rename hits EPERM on the orca-managed Windows workspace mount and litters deeply-nested deploy_tmp_* dirs. Let local Windows installer builds redirect the staged closure to an external plain-NTFS path via FUSION_DESKTOP_DEPLOY_DIR; CI and the default in-tree path are unchanged. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>