chore(infra/zellij): improve layout, fix titles, and configure commands

feat(ui/portal/forms): make the month year field green on valid input

test(portal-e2e/registration): implement registration

feat(ui/portal/terms): add redirect to profile page

feat(ui/portal): improve validation for hackathon registration form

feat(apps/email): connect with cms

chore(scaffold-examples/react-email-starter): delete project

fix(ui/docs/overview): UO grades icon broken

fix(infra/nix): database destroy command not working

feat(ui/portal/legal): create route