chore: qa fixes

Author: HardeepAsrani

classes/Visualizer/Module.php

@@ -487,6 +487,11 @@ final public function handleExistingRevisions( $chart_id, $chart ) {
 		if ( get_post_type( $chart_id ) !== Visualizer_Plugin::CPT_VISUALIZER ) {
 			return $chart_id;
 		}
+		// AI Builder (D3) charts use their own publish flow — skip the classic revision-restore
+		// mechanism, which would otherwise overwrite the saved title and settings.
+		if ( 'd3' === get_post_meta( $chart_id, Visualizer_Plugin::CF_CHART_LIBRARY, true ) ) {
+			return $chart;
+		}
 		// undo revisions.
 		$revisions_found    = $this->undoRevisions( $chart_id, true );
 

classes/Visualizer/Module/AIBuilder.php

@@ -181,13 +181,17 @@ public function fetchChart(): void {
 			wp_send_json_error( array( 'message' => __( 'Chart not found.', 'visualizer' ) ) );
 		}
 
-		$series = get_post_meta( $chart_id, Visualizer_Plugin::CF_SERIES, true );
-		$data   = Visualizer_Module::get_chart_data( $chart, '', false );
-		$code   = get_post_meta( $chart_id, self::CF_D3_CODE, true );
+		$series   = get_post_meta( $chart_id, Visualizer_Plugin::CF_SERIES, true );
+		$data     = Visualizer_Module::get_chart_data( $chart, '', false );
+		$code     = get_post_meta( $chart_id, self::CF_D3_CODE, true );
+		$settings = get_post_meta( $chart_id, Visualizer_Plugin::CF_SETTINGS, true );
+		$title    = ( is_array( $settings ) && ! empty( $settings['backend-title'] ) )
+			? $settings['backend-title']
+			: $chart->post_title;
 
 		wp_send_json_success(
 			array(
-				'title'  => $chart->post_title,
+				'title'  => $title,
 				'series' => $series,
 				'data'   => $data,
 				'code'   => $code,