As a user of the site I want the emails to contain a clear message that confirms I am using the right service and has the right content for quick assertion of the message

[ChristopherRotnes]

We should edit the supabase email templates:

https://supabase.com/docs/guides/local-development/customizing-email-templates

[ChristopherRotnes]

All 6 auth email templates styled and verified live. Deployed via supabase config push — templates version-controlled in supabase/templates/.