fix: clean exclude screenshot.html
diff --git a/gulpfile.js b/gulpfile.js
index 55b7195..98c3868 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -148,7 +148,7 @@
 });
 
 gulp.task('clean', function () {
-    return gulp.src(['public/**/*.html', 'release'])
+    return gulp.src(['public/**/*.html', '!public/screenshot.html', 'release'])
         .pipe(clean());
 });