Function scan_inventory 

pub fn scan_inventory(
    package_path: &Path,
    install_root: &Path,
    package_name: &str,
    scope: InstallScope,
) -> Result<MsiInventorySnapshot>

Scan an MSI database and reconstruct the inventory snapshot WinBrew stores.

The scanner reads the standard MSI tables, resolves directory and file keys into concrete install paths rooted at install_root, and returns the data in the same snapshot shape used by storage.