CREATE TABLE IF NOT EXISTS rvx_rate_limits (
    scope VARCHAR(64) NOT NULL PRIMARY KEY,
    next_allowed_at DATETIME(6) NOT NULL,
    updated_at DATETIME(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;