Boundary design is the work of deciding who or what may support, what may decide, what must be reviewed, and what should move upward or outward when conditions change.
This matters because useful support is not the same thing as decision authority, and a local action path is not the same thing as a safe escalation path. When those get blurred, speed may increase while accountability weakens.
In Fragment Practice, boundary design is not only a compliance question. It is an operating design question: what should be allowed, what should remain human, what needs review, and what happens when the normal path is no longer enough.