David decided: Snitch follow-flow redirected to signup when user is unauthenticated

David specified the behavior for unauthenticated follow attempts:

if a user clicks follow this paper and they aren't logged in, they should be taken to the sign up flow

And separately caught a missing admin capability:

there's no option to delete snitch posts on my account — that needs to be added

Both are small but precise product corrections made in a single session focused on shaping the Snitch reader-to-user conversion path.