Show the whole Rule on one review card, with quiet flags for missing cards and Continue once each question has one.

tests/components/MultiSelect.test.tsx

@@ -287,4 +287,18 @@ describe("MultiSelect – behaviour specifics", () => {
     );
     expect(screen.getByText("Pick one")).toBeInTheDocument();
   });
+
+  it("shows a flag after the add chip in the same row", () => {
+    render(
+      <MultiSelect
+        options={[]}
+        addButton
+        addButtonText="Add card"
+        flag="No card yet. Add one before you finish."
+      />,
+    );
+    expect(
+      screen.getByText("No card yet. Add one before you finish."),
+    ).toBeInTheDocument();
+  });
 });