feat(freight-api): seal EDR side of contracts with the one global stamp

apps/edr-freight-api/src/modules/bookings/booking-contract.service.ts

@@ -304,6 +304,7 @@ export class BookingContractService {
   async getSignatures(bookingId: string) {
     const rows = await this.bookingsRepository.findContractSignatures(bookingId);
     const views = rows.map((r) => this.viewModelBuilder.toSignatureView(r));
+    await this.viewModelBuilder.attachProviderStamp(views);
     await this.inlineSignatureImages(views);
     return { signatures: views };
   }

apps/edr-freight-api/src/modules/bookings/dto/contract-view.dto.ts

@@ -12,6 +12,12 @@ export class ContractSignatureDto {
 
   @ApiPropertyOptional()
   signatureImageUrl?: string | null;
+
+  @ApiPropertyOptional({
+    description:
+      'Company seal beside the signature. Set for the EDR (STAFF) side from the single global company stamp; null for the client side.',
+  })
+  stampImageUrl?: string | null;
 }
 
 export class SavedSignatureViewDto {