add dispute functionality for contract duty and implement collection dates

apps/edr-freight-api/src/modules/contracts/contract-transition.service.ts

@@ -274,6 +274,20 @@ export class ContractTransitionService {
     // shared six templates are never written here.
     const snapshot = await this.resolveDocumentSnapshot(contract, documentSnapshot);
 
+    // Audit whatever staff changed in the accept dialog. The baseline is the
+    // template this contract would otherwise have frozen as-is, so an untouched
+    // accept diffs to nothing and records no revision.
+    if (documentSnapshot) {
+      const baseline = await this.resolveDocumentSnapshot(contract);
+      await this.documentHistory.record({
+        contractId,
+        before: baseline,
+        after: snapshot,
+        actorId,
+        actorRole: 'Reviewing staff',
+      });
+    }
+
     await this.contractsRepository.update(contractId, {
       status: 'PENDING_APPROVAL',
       approvedByStaffId: actorId,