refactor: migrate authentication from Supabase to Better Auth and update Prisma schema models

apps/backend/src/generated/prisma/models/Complex.ts

@@ -468,18 +468,6 @@ export type ComplexOrderByRelationAggregateInput = {
   _count?: Prisma.SortOrder
 }
 
-export type StringFieldUpdateOperationsInput = {
-  set?: string
-}
-
-export type NullableStringFieldUpdateOperationsInput = {
-  set?: string | null
-}
-
-export type DateTimeFieldUpdateOperationsInput = {
-  set?: Date | string
-}
-
 export type ComplexCreateNestedOneWithoutUsersInput = {
   create?: Prisma.XOR<Prisma.ComplexCreateWithoutUsersInput, Prisma.ComplexUncheckedCreateWithoutUsersInput>
   connectOrCreate?: Prisma.ComplexCreateOrConnectWithoutUsersInput