Function exportable_supporter 

fn exportable_supporter(supporter_path: &Path) -> Option<String>

Filter what the export writes for the supporter file.

LemonSqueezy records are bound to an instance_id tied to the host they were activated on — restoring them on a different machine silently grants up to 30 days of offline grace before the background revalidator deactivates them server-side. To avoid users sharing licence files across devices and getting cut off later, strip LemonSqueezy records on export and only carry the manual (Ed25519) source through, which verifies locally with no machine binding.

Routes the read through supporter::load() so a tampered or unsigned on-disk record (signature mismatch, oversized file) is dropped at the source — otherwise we’d carry a forged record into the bundle that load() would then reject on import, silently losing the user’s supporter status.