Function restore_from_code 

pub async fn restore_from_code(
    code: &str,
    synced_tables: &[SyncedTable],
    migrations: &[Migration],
    coven_migration_policy: CovenMigrationPolicy,
    exact_upload_verification: ExactUploadVerification,
    transfer_limits: TransferLimits,
    key_custody: KeyCustody,
    identity_custody: IdentityCustody,
    oauth_clients: OAuthClients,
    oauth_tokens: Option<OAuthTokens>,
    cloudkit_ops: Option<Arc<dyn CloudKitOps>>,
    layout: &StoreLayout,
    clock: Arc<dyn Clock>,
    ids: Arc<dyn IdProvider>,
    on_status: impl Fn(&str),
    cancel: &Receiver<bool>,
) -> Result<Config, BootstrapError>

Restore a store from a restore code string.

Decodes the restore code, fills a RestoreSource from its join info plus the caller-supplied OAuth tokens and CloudKit driver, imports the signing key, and delegates to restore_from_cloud with the caller’s Coven migration policy unchanged.