Added logging to the 'Leave Team' functionality to track user actions, and implemented a confirmation input to further validate a user's intent to leave a team. Also revised the user-facing prompt for more clarity on the team leaving process. Corresponding changes were applied to the relevant services and front-end components.
Replaced the requireAuth method with requireUser to improve clarity and modified all instances where it was used. Renamed the import throughout multiple files and services and made changes accordingly, thus making it more specific and understandable that a logged-in user is needed. The return type of the method was also updated from Session to User to more accurately reflect the information it provides.
