## Summary
- update mail signatures to show Álvaro before Víctor across the Blade
mail templates
- add a focused mail test that guards the signature order so the old
ordering does not reappear
- verified with `php artisan test --compact
tests/Feature/MailSenderTest.php`
## Summary
- explicitly set the transaction sync mailable sender to the configured
default transactional address
- add a regression test so the transaction sync email cannot fall back
to an unintended sender
## Testing
- php artisan test --compact tests/Feature/MailSenderTest.php
## Summary
- route drip mailables through `Álvaro and Víctor <hi@whisper.money>`
and send the rest from `Whisper Money <no-reply@whisper.money>`
- remove legacy per-mailable `Victor` sender overrides so non-drip mail
falls back to the default sender consistently
- add focused sender coverage for drip, non-drip, and verification mail
paths
## Testing
- `php artisan test --compact tests/Feature/MailSenderTest.php
tests/Feature/Jobs/Drip/SendWelcomeEmailJobTest.php`
Víctor Falcón