feat: orientation model, password confirm, frontend build

- Collapse orientation to landscape/portrait (ribbon left = portrait standard)
- Add OrientationPicker component and wire settings sheet in HomeView
- Add password confirmation field to registration form (RepeatedType)
- Build frontend SPA to public/build/

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/Form/RegistrationFormType.php

@@ -8,6 +8,7 @@ use App\Entity\User;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\Extension\Core\Type\EmailType;
 use Symfony\Component\Form\Extension\Core\Type\PasswordType;
+use Symfony\Component\Form\Extension\Core\Type\RepeatedType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 use Symfony\Component\Validator\Constraints\Email;
@@ -26,15 +27,22 @@ class RegistrationFormType extends AbstractType
                     new Email(message: 'Please enter a valid email address'),
                 ],
             ])
-            ->add('plainPassword', PasswordType::class, [
-                'label' => 'Password',
+            ->add('plainPassword', RepeatedType::class, [
+                'type' => PasswordType::class,
                 'mapped' => false,
-                'constraints' => [
-                    new NotBlank(message: 'Please enter a password'),
-                    new Length(
-                        min: 8,
-                        minMessage: 'Your password must be at least {{ limit }} characters',
-                    ),
+                'invalid_message' => 'Passwords do not match.',
+                'first_options' => [
+                    'label' => 'Password',
+                    'constraints' => [
+                        new NotBlank(message: 'Please enter a password'),
+                        new Length(
+                            min: 8,
+                            minMessage: 'Your password must be at least {{ limit }} characters',
+                        ),
+                    ],
+                ],
+                'second_options' => [
+                    'label' => 'Confirm password',
                 ],
             ]);
     }