add company stamp upload functionality for contract signing

- Introduced StampUpload component for uploading company stamp images.
- Integrated stamp upload in contract signing modal, supporting PNG and JPG formats.
- Implemented validation for file type and size (max 5 MB).
- Added visual feedback for drag-and-drop functionality.
- Updated contract-related pages to handle duplicate contract alerts and pricing notices.
- Enhanced contract expiry management with a nightly sweep service.
- Added unit tests for new features and updated existing tests for contract handling.

apps/edr-freight-web/backoffice/src/components/layout/FreightDashboardHeader.tsx

@@ -23,6 +23,7 @@ import {
 import { type ReactNode } from "react";
 import { useNavigate } from "react-router-dom";
 
+import DocReviewAlertButton from "@/features/bookingWindows/DocReviewAlertButton";
 import NotificationBellContainer from "@/features/notifications/NotificationBellContainer";
 
 import type { PageMeta } from "./types";
@@ -114,8 +115,12 @@ const FreightDashboardHeader = ({
           </Group>
         </Group>
 
-        {/* Right: actions + avatar */}
+        {/* Right: actions + avatar. The doc-review alarm leads the group — it
+            only renders in the last half of a review phase that still has
+            undecided requests, so it never competes for space otherwise. */}
         <Group gap={10} wrap="nowrap" align="center">
+          <DocReviewAlertButton />
+
           <Tooltip label="Language" withArrow openDelay={300}>
             <UnstyledButton className={ISLAND} aria-label="Language">
               <Languages size={17} strokeWidth={1.8} />