Session Management #52
Description
Typstwriter can open multiple files in one window which works fine when opening a file from within Typstwriter, e.g. via the builtin file manager or Open File. However when opening a file with by other means, e.g. via the system file manager, a new Typstwriter window opens when it should be opened in a new tab in the existing session. Of course the user should still have the option to launch multiple Typstwriter windows/sessions at the same time.