fixes

deploy/migrations/0088_users_signup_email.up.sql

@@ -1,13 +0,0 @@
--- Email-signup accounts (see internal/domain.EncodeEmailPhone) now get a
--- short, normal-looking random "888" phone number in users.phone instead of
--- storing the email-derived string there directly (that string only ever
--- travels on the wire during auth.sendCode/signIn/signUp, exactly like a real
--- phone number would). signup_email is the durable email->user reverse
--- lookup that replaces the old "phone IS the email encoding" identity: it is
--- what SendCode/SignIn use to find a returning email-signup account by the
--- (deterministic) wire value decoded back to an email.
-ALTER TABLE public.users ADD COLUMN signup_email character varying(200) NOT NULL DEFAULT '';
-
--- Case-insensitive, ignores the empty default so real phone-number accounts
--- (the overwhelming majority) never touch this index.
-CREATE UNIQUE INDEX users_signup_email_lower_unique_idx ON public.users (lower(signup_email)) WHERE signup_email <> '';