Function install_batch 

pub async fn install_batch(
    target_dir: &Path,
    cache_base: &Path,
    eco: &Ecosystem,
    index: &PackageIndex,
    client: &ThunderstoreClient,
    game: &str,
    batch: &InstallBatch,
    installed_at_time: u64,
) -> Result<BatchOutcome>

Installs every identifier in batch, restoring protected disabled state afterwards, and reports per-item outcomes.

Failures do not abort the batch: each item is attempted and its reason recorded, because an operation that already installed earlier items has to say which ones. The disabled-state restore runs regardless, since items installed before a failure are already enabled. A requested enable that fails is recorded the same way.