Workspace state not persisted, page refresh wipes all code

[vivek1504]

Description

All code and file changes are lost on page refresh. There is no persistence mechanism (localStorage, IndexedDB, or cloud sync) for the workspace state.

Expected behavior

Code written in the editor should survive a page reload.

Actual behavior

Refreshing the page resets the IDE to the default template, discarding any work.

Suggested fix

Persist the virtual file system to IndexedDB or localStorage on every change.