Sindbad~EG File Manager

-- Add members_id column to users table to link user accounts with member records
ALTER TABLE `users` ADD COLUMN `members_id` int(11) NULL AFTER `assembly_id`;

-- Add foreign key constraint
ALTER TABLE `users` ADD CONSTRAINT `fk_users_member` FOREIGN KEY (`members_id`) REFERENCES `members` (`id`) ON DELETE SET NULL;

-- Add index for better performance
ALTER TABLE `users` ADD KEY `fk_users_member` (`members_id`);