inventory

server/prisma/schema.prisma

@@ -19,6 +19,7 @@ model User {
   updatedAt    DateTime    @updatedAt
   userRoles    UserRole[]
   contactEntries CrmContactEntry[]
+  inventoryTransactions InventoryTransaction[]
 }
 
 model Role {
@@ -117,6 +118,7 @@ model InventoryItem {
   updatedAt     DateTime @updatedAt
   bomLines      InventoryBomLine[] @relation("InventoryBomParent")
   usedInBomLines InventoryBomLine[] @relation("InventoryBomComponent")
+  inventoryTransactions InventoryTransaction[]
 }
 
 model Warehouse {
@@ -127,6 +129,7 @@ model Warehouse {
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
   locations WarehouseLocation[]
+  inventoryTransactions InventoryTransaction[]
 }
 
 model Customer {
@@ -188,11 +191,34 @@ model WarehouseLocation {
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
   warehouse   Warehouse @relation(fields: [warehouseId], references: [id], onDelete: Cascade)
+  inventoryTransactions InventoryTransaction[]
 
   @@unique([warehouseId, code])
   @@index([warehouseId])
 }
 
+model InventoryTransaction {
+  id             String   @id @default(cuid())
+  itemId         String
+  warehouseId    String
+  locationId     String
+  transactionType String
+  quantity       Int
+  reference      String
+  notes          String
+  createdById    String?
+  createdAt      DateTime @default(now())
+  updatedAt      DateTime @updatedAt
+  item           InventoryItem @relation(fields: [itemId], references: [id], onDelete: Cascade)
+  warehouse      Warehouse @relation(fields: [warehouseId], references: [id], onDelete: Restrict)
+  location       WarehouseLocation @relation(fields: [locationId], references: [id], onDelete: Restrict)
+  createdBy      User? @relation(fields: [createdById], references: [id], onDelete: SetNull)
+
+  @@index([itemId, createdAt])
+  @@index([warehouseId, createdAt])
+  @@index([locationId, createdAt])
+}
+
 model Vendor {
   id           String   @id @default(cuid())
   name         String