expand offers

api/prisma/schema.prisma

@@ -80,6 +80,9 @@ model Offer {
     wantId          String     @db.Uuid
     want            Want       @relation(fields: [wantId], references: [id], onDelete: Cascade)
 
+    createdAt  DateTime   @default(now())
+    updatedAt  DateTime   @default(now())
+
     // only one offer per want for a user
     // @@unique([userId, wantId])
     @@unique([listingId])