Dark mode and performance improvements

Hey everyone! We've got a fresh update for you packed with some neat new features and a little performance boost.

We're excited to announce that we've added dark mode support to the user interface! You can now switch to a more comfortable viewing experience, especially helpful in low-light environments. For our authentication process, we've also implemented robust input validation on the signup form. This helps ensure that your information is correct and secure from the moment you join.

Behind the scenes, we've been busy optimising our database queries, particularly for the dashboard. This means you should notice snappier load times and a generally smoother experience when checking out your data. We're always working to make things better for you!