Nexus Region Manager

Fixed:

• prevent NoClassDefFoundError when VaultUnlocked is missing

• lazy-load optional economy providers in NRMRuntime

• add guarded class presence checks + safe provider init fallbacks

• keep AUTO flow resilient: CoinsEngine -> VaultUnlocked/Vault -> Disabled

• Please Copy database and Region Detection Groups, and delte config, restart after adding new jar, and paste copied selection back.