model OAuthToken {
    id          Int      @id @default(autoincrement())
    userId      String   @map(name: "user_id")
    clientId    String   @map(name: "client_id")
    accessToken String   @unique @map(name: "access_token")
    createdAt   DateTime @default(now()) @map(name: "created_at")
    updatedAt   DateTime @default(now()) @map(name: "updated_at")

    // relations:
    user User @relation(fields: [userId], references: [id], onDelete: Cascade) // Beziehung zu User

    @@map(name: "oauth_tokens")
}