The Cognito panel gains a test sign-in that shows the decoded ID and
access token claims, a groups section, and a per-user panel to enable or
disable, confirm, sign out everywhere, reset or set a password and change
group membership.
Delete confirmations (row and bulk) now say what else goes, driven by
the schema's deleteImpact, and the inspector follows list refreshes
instead of the click-time snapshot.
Adds a users panel under the selected user pool: copyable app client ids, a create-user form that follows the pool's sign-in method, and the user list with delete. Maps the userpools icon key to the Cognito artwork.