ADD: added admin panel and archiv mandates

prisma/migrations/20260313000000_add_username_role_auditlog/migration.sql

@@ -0,0 +1,29 @@
+-- Add UserRole enum (MySQL ENUM)
+ALTER TABLE `users` ADD COLUMN `username` VARCHAR(191) NULL;
+ALTER TABLE `users` ADD COLUMN `role` ENUM('USER', 'ADMIN') NOT NULL DEFAULT 'USER';
+
+-- Backfill username from email (use part before @, ensure uniqueness)
+UPDATE `users` SET `username` = LOWER(SUBSTRING_INDEX(`email`, '@', 1)) WHERE `username` IS NULL;
+
+-- Make username NOT NULL and add unique constraint
+ALTER TABLE `users` MODIFY COLUMN `username` VARCHAR(191) NOT NULL;
+ALTER TABLE `users` ADD UNIQUE INDEX `users_username_key`(`username`);
+
+-- Create AuditLog table
+CREATE TABLE `audit_logs` (
+    `id` VARCHAR(191) NOT NULL,
+    `userId` VARCHAR(191) NULL,
+    `action` VARCHAR(191) NOT NULL,
+    `entity` VARCHAR(191) NULL,
+    `entityId` VARCHAR(191) NULL,
+    `metadata` JSON NULL,
+    `ipAddress` VARCHAR(191) NULL,
+    `createdAt` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+
+    INDEX `audit_logs_userId_idx`(`userId`),
+    INDEX `audit_logs_createdAt_idx`(`createdAt`),
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- Add foreign key from audit_logs to users
+ALTER TABLE `audit_logs` ADD CONSTRAINT `audit_logs_userId_fkey` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;