Fab asset import

FabService supports two deliberately separate paths:

• Public free catalog: search exact zero-price listings and directly import eligible glTF/GLB downloads. This does not sign in, purchase, claim an entitlement, or add the listing to My Library.
• Owned library: use the editor/launcher Epic session to list and import assets already owned by the account, including migrated Unreal Marketplace items.

Public free flow (Quixel/Megascans and other sellers)