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/contracts.repository.ts

@@ -14,6 +14,7 @@ import {
 import { ContractRateSnapshot } from './entities/contract-rate-snapshot.entity';
 import { ContractReviewNote, ContractReviewNoteType } from './entities/contract-review-note.entity';
 import { ContractSignature, ContractSignerRole } from './entities/contract-signature.entity';
+import { TERMINAL_CONTRACT_STATUSES } from './utils/contract-expiry.util';
 
 export interface ContractListFilterOptions {
   statuses?: string[];
@@ -66,6 +67,46 @@ export class ContractsRepository extends BaseRepository<Contract> {
     return Number(row?.max ?? 0);
   }
 
+  /**
+   * Non-terminal contracts for the same company + service type, with routes
+   * loaded — candidates for the duplicate-contract check on create(). Terminal
+   * filtering happens in JS via isEffectivelyExpired (also covers the
+   * date-passed-but-not-yet-cron-flipped case).
+   */
+  async findDuplicateCandidates(
+    companyId: string,
+    serviceTypeId: string,
+  ): Promise<Contract[]> {
+    return this.repository
+      .createQueryBuilder('contract')
+      .leftJoinAndSelect('contract.routes', 'routes')
+      .where('contract.deleted_at IS NULL')
+      .andWhere('contract.company_id = :companyId', { companyId })
+      .andWhere('contract.service_type_id = :serviceTypeId', { serviceTypeId })
+      .andWhere('contract.status NOT IN (:...terminal)', {
+        terminal: TERMINAL_CONTRACT_STATUSES,
+      })
+      .getMany();
+  }
+
+  /**
+   * Nightly expiry sweep: flips lapsed contracts to EXPIRED. Returns the
+   * number of rows updated (for cron logging).
+   */
+  async expireLapsedContracts(): Promise<number> {
+    const result = await this.repository
+      .createQueryBuilder()
+      .update(Contract)
+      .set({ status: 'EXPIRED' })
+      .where('deleted_at IS NULL')
+      .andWhere('status NOT IN (:...terminal)', { terminal: TERMINAL_CONTRACT_STATUSES })
+      .andWhere('contract_valid_until IS NOT NULL AND contract_valid_until < :now', {
+        now: new Date(),
+      })
+      .execute();
+    return result.affected ?? 0;
+  }
+
   /** Find a contract by ID with all child collections, service type, company and files. */
   async findByIdWithRelations(id: string): Promise<Contract | null> {
     if (!id) return null;
@@ -434,7 +475,7 @@ export class ContractsRepository extends BaseRepository<Contract> {
   findSignatures(contractId: string): Promise<ContractSignature[]> {
     return this.dataSource.getRepository(ContractSignature).find({
       where: { contractId },
-      relations: ['signatureFile'],
+      relations: ['signatureFile', 'stampFile'],
       order: { signedAt: 'ASC' },
     });
   }
@@ -445,7 +486,7 @@ export class ContractsRepository extends BaseRepository<Contract> {
   ): Promise<ContractSignature | null> {
     return this.dataSource.getRepository(ContractSignature).findOne({
       where: { contractId, role },
-      relations: ['signatureFile'],
+      relations: ['signatureFile', 'stampFile'],
     });
   }