fix(gate): buildArtifactGate emits approve/reject options so the gate renders a forward button

harness/.pi/extensions/gate/builders.js

@@ -112,6 +112,14 @@ function buildArtifactGate({ id, phase, title, artifact, action }) {
       `builders: artifact-gate action.kind must be one of ${[...VALID_ACTION_KINDS].join(", ")}`,
     );
   }
+  const ACTION_OPTIONS = {
+    approve_reject: [
+      { id: "approve", label: "Conferma e prosegui", recommended: true },
+      { id: "reject", label: "Rifiuta" },
+    ],
+    confirm: [{ id: "approve", label: "Conferma e prosegui", recommended: true }],
+    view_only: [],
+  };
   return {
     type: "ui_request",
     id,
@@ -121,6 +129,7 @@ function buildArtifactGate({ id, phase, title, artifact, action }) {
     title,
     artifact,
     action,
+    options: ACTION_OPTIONS[action.kind],
     reserved: RESERVED,
   };
 }