ALTER TABLE "reimbursement_forms"
  ADD COLUMN "deleted_at" TIMESTAMP(3),
  ADD COLUMN "deleted_by" UUID,
  ADD CONSTRAINT "reimbursement_forms_deleted_by_fkey"
    FOREIGN KEY ("deleted_by") REFERENCES "employees"("id") ON DELETE RESTRICT ON UPDATE CASCADE,
  ADD CONSTRAINT "reimbursement_forms_deleted_state_check"
    CHECK (("deleted_at" IS NULL AND "deleted_by" IS NULL)
      OR ("deleted_at" IS NOT NULL AND "deleted_by" IS NOT NULL AND "status" = 'cancelled'));

CREATE INDEX "idx_reimbursement_forms_deleted_at" ON "reimbursement_forms"("deleted_at");