fix: enforce drainage uniqueness and carrier-specific reporting

api/src/channels/channels.service.spec.ts

@@ -370,6 +370,7 @@ describe('ChannelsService', () => {
       updatedAt: new Date(),
     };
     const tx = {
+      $executeRaw: jest.fn().mockResolvedValue(1),
       channelReportField: {
         findMany: jest
           .fn()
@@ -519,6 +520,7 @@ describe('ChannelsService', () => {
     async (sourceEntry) => {
       const prisma = createPrismaMock();
       const tx = {
+        $executeRaw: jest.fn().mockResolvedValue(1),
         smsSignature: {
           findUnique: jest.fn().mockResolvedValue({ id: 'sig-1', tenantId: 'tenant-1', applicationId: 'app-1' }),
           update: jest.fn().mockResolvedValue({ id: 'sig-1', reportStatus: 'approved' }),
@@ -601,6 +603,7 @@ describe('ChannelsService', () => {
   it('uses the enterprise-signature save time when creating an approved carrier task', async () => {
     const prisma = createPrismaMock();
     const tx = {
+      $executeRaw: jest.fn().mockResolvedValue(1),
       smsSignature: {
         findUnique: jest.fn().mockResolvedValue({ id: 'sig-1', tenantId: 'tenant-1', applicationId: 'app-1' }),
         update: jest.fn().mockResolvedValue({ id: 'sig-1', reportStatus: 'approved' }),
@@ -655,6 +658,7 @@ describe('ChannelsService', () => {
   it('changes a drainage report task without overwriting the signature report summary', async () => {
     const prisma = createPrismaMock();
     const tx = {
+      $executeRaw: jest.fn().mockResolvedValue(1),
       smsSignature: {
         findUnique: jest.fn().mockResolvedValue({ id: 'sig-1', tenantId: 'tenant-1', applicationId: 'app-1' }),
         update: jest.fn(),
@@ -699,6 +703,7 @@ describe('ChannelsService', () => {
         reportType: 'drainage',
         drainageItemId: 'drain-1',
         channelId: 'channel-1',
+        carrier: null,
         status: 'approved',
       },
     ]);
@@ -1259,6 +1264,7 @@ describe('ChannelsService', () => {
 
     const transactionCallback = prisma.$transaction.mock.calls[0][0];
     const tx = {
+      $executeRaw: jest.fn().mockResolvedValue(1),
       smsChannelGroupItem: { deleteMany: jest.fn(), createMany: jest.fn() },
       smsChannelGroup: {
         update: jest.fn(),