fix invoice number

database/migrations/Migration20260517190050.ts

@@ -0,0 +1,15 @@
+import { Migration } from '@mikro-orm/migrations';
+
+export class Migration20260517190050 extends Migration {
+
+  override async up(): Promise<void> {
+    this.addSql(`CREATE SEQUENCE IF NOT EXISTS invoice_number_seq;`);
+    this.addSql(`SELECT setval('invoice_number_seq', COALESCE((SELECT MAX(invoice_number) FROM invoices), 0) + 1, false);`);
+    this.addSql(`ALTER TABLE "invoices" ALTER COLUMN "invoice_number" SET DEFAULT nextval('invoice_number_seq');`);
+  }
+
+  override async down(): Promise<void> {
+    this.addSql(`ALTER TABLE "invoices" ALTER COLUMN "invoice_number" DROP DEFAULT;`);
+  }
+
+}