chore(examples): use restore

Author: Vexcited

examples/iut/signatures/extract.mts

@@ -1,7 +1,11 @@
 import { CAS } from "unilim/cas";
 import { Signatures } from "unilim/iut/signatures";
 
-const cas = await CAS.initialize(Bun.env.USERNAME!, Bun.env.PASSWORD!);
+const cas = await CAS.restore(
+  Bun.env.USERNAME!, Bun.env.PASSWORD!,
+  Bun.env.CONNECTION!, Bun.env.KEY!
+);
+
 const signatures = await Signatures.fromCAS(cas);
 
 console.log(signatures.session);