function wp_detech_cache_activate() {
    // Create cache directory if it doesn't exist
    $cache_dir = WP_DETECH_CACHE_PATH . 'cache/';
    if ( ! file_exists( $cache_dir ) ) {
        mkdir( $cache_dir, 0755, true );
    }

    // Flush rewrite rules if necessary
    if ( function_exists( 'flush_rewrite_rules' ) ) {
        flush_rewrite_rules();
    }
}

register_activation_hook( __FILE__, 'wp_detech_cache_activate' );