added contract history

backend/prisma/migrations/20260208174811_add_contract_history/migration.sql

@@ -0,0 +1,15 @@
+-- CreateTable
+CREATE TABLE `ContractHistoryEntry` (
+    `id` INTEGER NOT NULL AUTO_INCREMENT,
+    `contractId` INTEGER NOT NULL,
+    `title` VARCHAR(191) NOT NULL,
+    `description` TEXT NULL,
+    `isAutomatic` BOOLEAN NOT NULL DEFAULT false,
+    `createdBy` VARCHAR(191) NOT NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- AddForeignKey
+ALTER TABLE `ContractHistoryEntry` ADD CONSTRAINT `ContractHistoryEntry_contractId_fkey` FOREIGN KEY (`contractId`) REFERENCES `Contract`(`id`) ON DELETE CASCADE ON UPDATE CASCADE;