Added:

- turbo-stream for Chapter updates
- progressbar for chapter scrapping
- minor optimisations

assets/controllers/chapter_progress_controller.js

@@ -31,7 +31,7 @@ export default class extends Controller {
   }
 
   handleProgressUpdate(data) {
-    this.currentPage = data.pageIndex + 1;
+    this.currentPage = data.pageIndex;
     this.totalPages = data.totalPages;
 
     this.updateProgressBar();