ALTER TABLE `materialReturnFollowups`
  ADD COLUMN `litigationStatus` enum('none','pending','resolved') NOT NULL DEFAULT 'none' AFTER `issueFlag`,
  ADD COLUMN `blockedItems` text NULL AFTER `litigationStatus`,
  ADD COLUMN `estimatedDamageAmount` int NULL AFTER `blockedItems`,
  ADD COLUMN `estimatedDamageSource` varchar(32) NULL AFTER `estimatedDamageAmount`,
  ADD COLUMN `arbitrationDecision` enum('partial_retention','full_retention','dismissed') NULL AFTER `estimatedDamageSource`,
  ADD COLUMN `arbitrationAmount` int NULL AFTER `arbitrationDecision`,
  ADD COLUMN `arbitrationNotes` text NULL AFTER `arbitrationAmount`,
  ADD COLUMN `arbitratedByUserId` int NULL AFTER `arbitrationNotes`,
  ADD COLUMN `arbitratedAt` timestamp NULL AFTER `arbitratedByUserId`,
  ADD COLUMN `litigationLetterKey` varchar(512) NULL AFTER `arbitratedAt`,
  ADD COLUMN `litigationLetterUrl` varchar(1024) NULL AFTER `litigationLetterKey`,
  ADD COLUMN `litigationLetterName` varchar(255) NULL AFTER `litigationLetterUrl`;
