Gated UI

[jonthegeek]

As a shiny dev, I'd like to prevent users from accessing my app without first logging in, so that I can restrict the app to authorized users.

Start with Slack & Clickup as POC, consider Google for a full test.

This doesn't require doing anything with the cookie, just test that it's there. We probably might as well validate it (since scenes covers that) but it isn't required if that's hard.