Function apply_with_surface 

pub async fn apply_with_surface(
    submission: BuilderSubmission,
    config: &mut Config,
    surface: Surface,
) -> Result<QuickstartApplyOutcome, Vec<QuickstartError>>

One-shot quickstart application for callers that own a private Config with no supervised publication domain (the CLI). Persists the staged config and installs the personality files; there is no live publication to make, so a post-commit side-effect failure is reported without any publication semantics.