feat(auth): enhance user registration with names and improve UI

- Add first_name and last_name fields to User model with validations
- Configure Devise registrations controller to accept name parameters
- Update registration form with name fields and improved styling
- Replace Twitter Bootstrap pagination with custom Tailwind components
- Add French locale translations for pagination and models
- Update header styling with responsive design improvements
- Add EditorConfig for consistent code formatting
- Fix logout controller URL handling and improve JavaScript
- Update seed data and test fixtures with name attributes
- Add comprehensive model tests for name validations
- Add test.sh script for easier test execution

💘 Generated with Crush
Co-Authored-By: Crush <crush@charm.land>

app/views/kaminari/_first_page.html.erb

@@ -0,0 +1,13 @@
+<%# Link to the "First" page
+  - available local variables
+    url:           url to the first page
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+-%>
+<li>
+  <%= link_to_unless current_page.first?, t('views.pagination.first').html_safe, url,
+      class: "px-3 py-2 text-sm font-medium text-gray-500 bg-white border border-gray-300 rounded hover:bg-gray-100 hover:text-gray-700 transition-colors duration-200 shadow-sm hover:shadow-md",
+      remote: remote %>
+</li>