Add an Infinite Canvas / Whiteboard Mode for Mind Mapping and Brainstorming

​As a dedicated Notewise user subscribed to both Premium features and the Notewise Cloud Dual plan, I absolutely love the app's performance. However, there is one massive gap that forces me to leave the ecosystem: the lack of an infinite canvas/whiteboard.

​Why this feature is needed:

• ​Visual Brainstorming: For complex, multidisciplinary exams like the UPSC (Civil Services), connecting massive topics and creating large-scale mind maps is essential.

• ​Workflow Fragmentation: Because Notewise is restricted to fixed pages, I am forced to constantly jump out of the app to use competitors (like Concepts or GoodNotes) just for their infinite canvas.

• ​User Retention: Having a dedicated whiteboard or infinite canvas mode would allow students and professionals to keep 100% of their study routine inside Notewise without needing fragmented third-party workarounds.

​Please consider pulling this feature out of the backlog/cold storage. It would be an absolute game-changer for competitive exam aspirants and visual thinkers!