Submit customer identity proofs and show reviewed limits

docs/ux/kyc.md

@@ -2,6 +2,11 @@
 
 Task [#20](https://git.sendico.io/tech/sxchnge/issues/20). Plan recorded before implementation.
 
+> This original demo plan is retained as design history. Production identity
+> uploads, staff review and authoritative limits are implemented by task #48;
+> see [Customer identity verification](../identity-verification.md). Demo behavior
+> below applies only when the backend adapters are not selected.
+
 ## User outcome and scope
 
 Understand current access, decide whether higher limits are useful, and submit two