fix(schema): change InfraIPAddress.address from IPNetwork to IPHost — refs #52

IPNetwork with strict=True rejects host addresses like 10.0.1.1/31
(host bits set). Interface IP assignments are host addresses with a
prefix length, which is exactly what IPHost accepts.

schemas/base.yml

@@ -320,7 +320,7 @@ nodes:
     display_label: "{{ address__value }}"
     attributes:
       - name: address
-        kind: IPNetwork
+        kind: IPHost
         description: IP address with prefix (e.g., 10.0.1.1/31)
       - name: description
         kind: Text