feat: inherit channel report requirements

api/prisma/schema.prisma

@@ -235,6 +235,8 @@ model DrainageField {
   description String?
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
+
+  channelReportFields ChannelReportField[]
 }
 
 model BillingPlan {
@@ -410,6 +412,7 @@ model SmsSignature {
   materials   SignatureMaterial[]
   templates   SmsTemplate[]
   reportMaterials SignatureReportMaterial[]
+  drainageReportMaterials DrainageReportMaterial[]
   reportTasks     ChannelSignatureReportTask[]
   messageRecords  SmsMessageRecord[]
 
@@ -512,6 +515,7 @@ model SmsChannel {
   routeRules    ChannelRouteRule[]
   healthMetrics ChannelHealthMetric[]
   reportFields  ChannelReportField[]
+  drainageReportMaterials DrainageReportMaterial[]
   reportTasks   ChannelSignatureReportTask[]
   reportRecords ChannelSignatureReportRecord[]
   messageRecords SmsMessageRecord[]
@@ -658,6 +662,8 @@ model ChannelHealthMetric {
 model ChannelReportField {
   id          String   @id @default(cuid())
   channelId   String
+  drainageFieldId String?
+  reportType  String   @default("both")
   code        String
   name        String
   fieldType   String
@@ -669,8 +675,10 @@ model ChannelReportField {
   updatedAt   DateTime @updatedAt
 
   channel SmsChannel @relation(fields: [channelId], references: [id], onDelete: Cascade)
+  drainageField DrainageField? @relation(fields: [drainageFieldId], references: [id])
 
   @@unique([channelId, code])
+  @@index([drainageFieldId, reportType])
 }
 
 model SignatureReportMaterial {
@@ -689,6 +697,24 @@ model SignatureReportMaterial {
   @@index([channelId])
 }
 
+model DrainageReportMaterial {
+  id              String   @id @default(cuid())
+  signatureId     String
+  drainageItemId  String
+  channelId       String
+  fieldCode       String
+  fieldValue      String?
+  fileObjectId    String?
+  createdAt       DateTime @default(now())
+  updatedAt       DateTime @updatedAt
+
+  signature SmsSignature @relation(fields: [signatureId], references: [id], onDelete: Cascade)
+  channel   SmsChannel   @relation(fields: [channelId], references: [id], onDelete: Cascade)
+
+  @@unique([signatureId, drainageItemId, channelId, fieldCode])
+  @@index([channelId, fieldCode])
+}
+
 model ChannelSignatureReportTask {
   id          String   @id @default(cuid())
   tenantId    String