Implement database migration, notification logs, and one-click Mailcow setup

prisma/schema.prisma

@@ -20,6 +20,7 @@ model User {
   telegramId       String?
   mailboxMappings  MailboxMapping[]
   notificationConfigs NotificationConfig[]
+  notificationLogs NotificationLog[]
   createdAt        DateTime             @default(now())
   updatedAt        DateTime             @updatedAt
 }
@@ -41,3 +42,23 @@ model NotificationConfig {
   active    Boolean  @default(true)
   createdAt DateTime @default(now())
 }
+
+model NotificationLog {
+  id        String   @id @default(cuid())
+  mailbox   String   // Bildirim gelen mail adresi
+  sender    String?  // Gönderen kişi
+  subject   String?  // Konu
+  status    String   // "SENT", "FAILED"
+  error     String?  // Hata varsa detayı
+  userId    String?  // Hangi kullanıcıya bildirim gittiği
+  user      User?    @relation(fields: [userId], references: [id], onDelete: SetNull)
+  createdAt DateTime @default(now())
+}
+
+model SystemLog {
+  id        String   @id @default(cuid())
+  level     String   // "INFO", "WARN", "ERROR"
+  message   String
+  details   String?
+  createdAt DateTime @default(now())
+}