## Summary
- add signed landing links that unlock auth buttons while
HIDE_AUTH_BUTTONS is enabled
- persist the unlock in a secure cookie so desktop and installed PWA
users can still sign up
- add artisan command to generate signed landing auth links and test
coverage for the flow
## Testing
- php artisan test --compact tests/Feature/LandingAuthOverrideTest.php
tests/Feature/Console/GenerateLandingAuthLinkCommandTest.php
tests/Feature/Auth/RegistrationTest.php
- php artisan test --compact tests/Feature/WelcomeBanksOrderingTest.php
tests/Feature/SubscriptionTest.php
- vendor/bin/pint --dirty --format agent
## Summary
- allow `/register?force=1` to bypass the hidden-auth redirect and
render the registration page
- preserve the `force=1` query on form submit so hidden signup still
works end-to-end
- enforce hidden-signup blocking in the Fortify user creation path and
cover the forced/unforced flows with tests
## Summary
- store browser-detected IANA timezones on users during registration and
share the value to the frontend
- silently backfill missing timezones for authenticated users without
overwriting existing saved values
- add focused feature coverage for registration, shared props, and the
timezone backfill endpoint
## Testing
- php artisan test --compact tests/Feature/Auth/RegistrationTest.php
tests/Feature/InertiaSharedDataTest.php
tests/Feature/Settings/TimezoneTest.php
- npm test -- resources/js/utils/currency.test.ts