-- Add missing user_states table
-- Import this in phpMyAdmin after selecting your database

CREATE TABLE IF NOT EXISTS `user_states` (
  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
  `user_id` INT UNSIGNED NOT NULL,
  `state` VARCHAR(50) NOT NULL DEFAULT 'idle',
  `context` TEXT DEFAULT NULL COMMENT 'JSON-encoded context data',
  `created_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `updated_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_user` (`user_id`),
  KEY `idx_state` (`state`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;