[Escalated to 2nd Tier] Translate Jet Engine Post Types and listings

add_filter(
	'theme_mod_jupiterx_house_single_template',
	'wpml_translate_house_single_template',
	10,
	1
);
function wpml_translate_house_single_template( $value ) {
	$value = apply_filters( 'wpml_object_id', $value, 'post_elementor_library' );
}

/**
 * Translate associative KEYS for JetEngine 'features' post meta via WPML.
 * Place in wp-content/mu-plugins/jetengine-features-wpml.php (recommended) or your theme's functions.php.
 */

add_filter( 'jet-engine/listing/data/get-post-meta', 'myproject_translate_features_keys_wpml', 10, 3 );

/**
 * @param mixed $value The meta value resolved by JetEngine (array for 'features').
 * @param string $key Meta key (we only act on 'features').
 * @param int $object_id Post ID.
 *
 * @return mixed
 */
function myproject_translate_features_keys_wpml( $value, $key, $object_id ) {

	// Only handle the 'features' field and only if it's an associative array like ['Pet-Friendly' => 'true', ...].
	if ( $key !== 'features' || ! is_array( $value ) ) {
		return $value;
	}

	// Determine current language (WPML). If WPML is missing, calls below no-op and return originals.
	$lang = apply_filters( 'wpml_current_language', null );
	if ( empty( $lang ) && defined( 'ICL_LANGUAGE_CODE' ) ) {
		$lang = ICL_LANGUAGE_CODE;
	}

	$context = 'Jet Engine Admin Labels';

	// Small request-level cache to avoid re-translating the same labels repeatedly.
	static $cache = [];

	$translated = [];
	foreach ( $value as $label => $flag ) {
		$label_str = (string) $label;
		$name      = md5( $label_str ); // stable key as you requested
		$ck        = $context . '|' . $name . '|' . (string) $lang;

		if ( isset( $cache[ $ck ] ) ) {
			$new_label = $cache[ $ck ];
		} else {
			// Register (idempotent) so translators can provide translations in WPML String Translation.
			do_action( 'wpml_register_single_string', $context, $name, $label_str );

			// Translate. If WPML inactive or no translation yet, this returns the original.
			$new_label = apply_filters( 'wpml_translate_single_string', $label_str, $context, $name, $lang );
			if ( ! is_string( $new_label ) || $new_label === '' ) {
				$new_label = $label_str;
			}
			$cache[ $ck ] = $new_label;
		}

		// Keep the same value ('true'/'false') as stored; do NOT coerce unless you want to.
		$translated[ $new_label ] = $flag;
	}

	return $translated;
}