Wrapper-builders treat vaults like single contracts. They're not. A real vault is an accounting engine, a risk surface, a policy enforcer, a custody bridge, a reporting pipeline, a governance interface, a compliance gate, and a lifecycle manager — all interacting under conditions where capital cannot be lost and policies cannot be bypassed.
VaultOS factors these into eleven explicit layers so wrapper-builders can configure what's unique to their product (Layers 1–3) and inherit what should never be rebuilt (Layers 4–11).