Feature Request: Comment Feature & Desktop Editing

Hi! I would love to suggest adding a comment feature, similar to the one in Microsoft Word.

Personally, I don't really use collaboration features, but I find comments incredibly useful for leaving reminders, questions, or notes for myself without changing the original content. It would make studying and reviewing much easier.

A few ideas:

• Tap or highlight text to add a comment

• Display comments in a side panel

• Allow comments to be resolved or hidden after they're no longer needed

• Sync comments across devices

I also have a question: Is there any plan to allow users to edit notes from the desktop version? It would be very convenient to switch between my tablet and computer when studying.

Thank you for all the hard work on improving the app!