Function observe_github_release_assets 

pub fn observe_github_release_assets(
    ctx: &EffectCtx<'_>,
    version: &str,
    expected_assets: &[String],
) -> VerifyOutcome

Observe the GitHub Release asset set for a delegated or engine-owned binary target. Kept at the adapter seam so live cuts and post-hoc verification share one parser and one outcome discipline.