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-api/src/modules/contracts/utils/contract-expiry.util.ts

@@ -0,0 +1,25 @@
+import type { Contract } from '../entities/contract.entity';
+
+/** Statuses that already mean "done/void" — a contract in one of these never blocks a duplicate. */
+export const TERMINAL_CONTRACT_STATUSES = [
+  'REJECTED',
+  'CANCELLED',
+  'CONTRACT_CLOSED',
+  'ARCHIVED',
+  'EXPIRED',
+] as const;
+
+/**
+ * True once a contract is done, either explicitly (terminal status) or by date
+ * (past contractValidUntil). Checked by date too because the nightly expiry
+ * cron only flips the status once a day — this keeps same-day checks correct
+ * even a few hours before the cron runs.
+ */
+export function isEffectivelyExpired(
+  contract: Pick<Contract, 'status' | 'contractValidUntil'>,
+): boolean {
+  if ((TERMINAL_CONTRACT_STATUSES as readonly string[]).includes(contract.status)) {
+    return true;
+  }
+  return Boolean(contract.contractValidUntil && contract.contractValidUntil < new Date());
+}