RegisterManager

Registers the manager with the current Activity and Context, and renders the scan UI. The scope is cancelled when the composable leaves composition entirely. The NFC adapter reference is refreshed on Activity recreation (e.g. configuration change).

A Composable function that registers the manager within the Compose UI hierarchy. This is typically used to handle lifecycle events and show scanning-related UI components.

Registers the manager (no-op on iOS — the system owns the scanning UI).