Remove the free player selection from /benvenuto: without a Supabase session
no screen renders, and the VITE_AUTH_OBBLIGATORIA bridge flag is gone.
Admin rights now come only from user_roles, so the hardcoded name list in
crapp-data.ts is deleted along with its tests.
Add migration m4_solo_autenticati, which revokes anon access to the v1.0
tables. Apply it only once the whole team has linked an account.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>