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/hooks/rule-engine/useRuleEngine.ts

@@ -119,7 +119,13 @@ export const useCargoLeafOptions = (enabled = true) =>
           const code = String(row.code ?? "").trim();
           const label =
             name && code ? `${name} (${code})` : name || code || String(row.id);
-          return { label, value: String(row.id) };
+          // The commodity's unit of measure rides along so the rate form can
+          // offer per-item units for counted (break-bulk) commodities.
+          return {
+            label,
+            value: String(row.id),
+            unitOfMeasure: String(row.unitOfMeasure ?? ""),
+          };
         });
     },
   });