fix(frontend): align search and header components with reference

inc/helpers/posts-renderer/config.php

@@ -111,8 +111,17 @@ if (!function_exists('aksrt_renderer_highlight_text')) {
 		if (!$words) {
 			return esc_html($text);
 		}
-		$pattern = '/' . implode('|', array_map(static fn(string $word): string => preg_quote($word, '/'), $words)) . '/iu';
-		return (string) preg_replace($pattern, '<span class="focus-color">$0</span>', esc_html($text));
+		$pattern = '/(' . implode('|', array_map(static fn(string $word): string => preg_quote($word, '/'), $words)) . ')/iu';
+		$parts = preg_split($pattern, $text, -1, PREG_SPLIT_DELIM_CAPTURE);
+		if (!is_array($parts)) {
+			return esc_html($text);
+		}
+		$html = '';
+		foreach ($parts as $index => $part) {
+			$escaped = esc_html($part);
+			$html .= ($index % 2) === 1 ? '<b class="focus-color">' . $escaped . '</b>' : $escaped;
+		}
+		return $html;
 	}
 }