fix(vendor-portal): align locked banner with comments-only actions

src/app/v/[token]/dispatch/_components/dispatch-snapshot-details.tsx

@@ -149,9 +149,8 @@ export function DispatchSnapshotDetails({ data, locked }: DispatchSnapshotDetail
       <DispatcherContactDetails data={data} />
       {locked && (
         <Text variant="feedback" className="vp-muted" sx={{ marginTop: 2 }}>
-          {data.status === "Refused"
-            ? "This dispatch is refused and locked to further changes. Comments remain open."
-            : `This dispatch is ${data.status.toLowerCase()} and locked to further status changes. Sign-off actions may still be available.`}
+          This dispatch is {data.status.toLowerCase()} and locked to further changes. Comments
+          remain open.
         </Text>
       )}
       {Boolean(description) && (

src/test/app/v/dispatch-snapshot-details.test.tsx

@@ -0,0 +1,52 @@
+import { screen } from "@testing-library/react";
+import { describe, expect, it } from "vitest";
+import { DispatchSnapshotDetails } from "@/app/v/[token]/dispatch/_components/dispatch-snapshot-details";
+import type { VendorPortalDispatchDetail } from "@/domain/vendor-portal/types/vendor-portal";
+import { renderWithProviders } from "@/test/test-utils";
+
+function buildData(
+  overrides: Partial<VendorPortalDispatchDetail> = {},
+): VendorPortalDispatchDetail {
+  return {
+    id: 9,
+    dispatchNumber: "DSP-9",
+    status: "Verified",
+    nteAmount: 500,
+    checklist: [],
+    comments: [],
+    upliftRequests: [],
+    signoffs: [],
+    documents: [],
+    ...overrides,
+  };
+}
+
+describe("DispatchSnapshotDetails locked banner", () => {
+  it.each(["Verified", "Cancelled", "Refused"])(
+    "states that comments remain open when status is %s",
+    (status) => {
+      renderWithProviders(<DispatchSnapshotDetails data={buildData({ status })} locked />, {
+        withAuth: false,
+      });
+
+      expect(
+        screen.getByText(
+          new RegExp(
+            `This dispatch is ${status.toLowerCase()} and locked to further changes\\. Comments remain open\\.`,
+            "i",
+          ),
+        ),
+      ).toBeInTheDocument();
+      expect(screen.queryByText(/sign-off/i)).not.toBeInTheDocument();
+    },
+  );
+
+  it("hides the locked banner when the dispatch is not locked", () => {
+    renderWithProviders(
+      <DispatchSnapshotDetails data={buildData({ status: "In Progress" })} locked={false} />,
+      { withAuth: false },
+    );
+
+    expect(screen.queryByText(/locked to further changes/i)).not.toBeInTheDocument();
+  });
+});