1. Run npm install to install all dependencies
2. Run node tools/copy-webviewer-files.js to copy the webviewer files to 'src/assets'

• Run ng serve to start the dev server

When rotating a custom annotation in the PDFTron WebViewer, the rotation is not preserved correctly after exporting/downloading the PDF.

Inside the WebViewer, the annotation appears correctly rotated. However, after downloading the PDF, the annotation ends up with a random rotation, not matching either the original position or the rotation applied in the viewer.

The rotation logic was implemented exactly as instructed by PDFTron (Apryse) in their support ticket: https://support.apryse.com/support/tickets/129057

- Rotate a custom annotation in WebViewer → displays correctly
- Export or download the PDF
- The annotation in the exported PDF appears with a random rotation (not matching the intended rotation)

The rotation applied to a custom annotation in the WebViewer
should be preserved exactly and consistently in the downloaded PDF.

*The WebViewer logic can be found in src/webviewer/web-viewer.component.ts