## Summary
- add an optional linked property selector when creating loan accounts
in both the main create dialog and onboarding
- validate that only the current user's unlinked real-estate accounts
can be selected and persist the reciprocal link after loan creation
- expose linked property state in shared account props and cover the new
flow with focused loan feature tests
## Testing
- php artisan test --compact tests/Feature/LoanTest.php
- vendor/bin/pint --dirty --format agent
a7c1bd35ef