setup i18n and ported all tools to standalone pages

src/js/logic/scan-to-pdf.ts

@@ -1,4 +1,5 @@
 // This is essentially the same as image-to-pdf.
-import { imageToPdf } from './image-to-pdf.js';
-
-export const scanToPdf = imageToPdf;
+// Note: This is a legacy stub - scan-to-pdf functionality is now handled by image-to-pdf page
+export const scanToPdf = () => {
+    console.warn('scan-to-pdf is deprecated, redirecting to image-to-pdf page');
+};