## Summary
- gate waitlist signup behind email confirmation so only verified leads
receive a queue position and referral code
- add signed lead verification routes, a check-email page, and a
dedicated verification email for the waitlist flow
- update lead syncing and feature tests so only verified leads are
exported to Resend and referral movement happens after verification
## Testing
- php artisan test --compact tests/Feature/UserLeadTest.php
- php artisan test --compact
tests/Feature/ResendSyncLeadsCommandTest.php
- php artisan test --compact tests/Feature/MailSenderTest.php
- vendor/bin/pint --dirty --format agent
## Summary
- add a `resend:sync-leads` command that syncs all `user_leads` into the
Resend leads segment
- make lead sync idempotent by creating contacts with the segment and
falling back to adding existing contacts to the segment
- schedule the command daily at `03:00` UTC and cover the
command/fallback behavior with Pest tests
## Testing
- php artisan test --compact
tests/Feature/ResendSyncLeadsCommandTest.php
Víctor Falcón