feat: L'Ami Fiduciaire V1.0.0 — full codebase with Story 0.1 complete

Initial commit of the L'Ami Fiduciaire SaaS platform built on Laravel 12,
Vue 3, Inertia.js 2, and Tailwind CSS 4.

Story 0.1 (rename folders to declarations in database) is implemented and
code-reviewed: migration, rollback, and 6 Pest tests all passing.

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

tests/Feature/Auth/TwoFactorChallengeTest.php

@@ -0,0 +1,45 @@
+<?php
+
+use App\Models\User;
+use Inertia\Testing\AssertableInertia as Assert;
+use Laravel\Fortify\Features;
+
+test('two factor challenge redirects to login when not authenticated', function () {
+    if (! Features::canManageTwoFactorAuthentication()) {
+        $this->markTestSkipped('Two-factor authentication is not enabled.');
+    }
+
+    $response = $this->get(route('two-factor.login'));
+
+    $response->assertRedirect(route('login'));
+});
+
+test('two factor challenge can be rendered', function () {
+    if (! Features::canManageTwoFactorAuthentication()) {
+        $this->markTestSkipped('Two-factor authentication is not enabled.');
+    }
+
+    Features::twoFactorAuthentication([
+        'confirm' => true,
+        'confirmPassword' => true,
+    ]);
+
+    $user = User::factory()->create();
+
+    $user->forceFill([
+        'two_factor_secret' => encrypt('test-secret'),
+        'two_factor_recovery_codes' => encrypt(json_encode(['code1', 'code2'])),
+        'two_factor_confirmed_at' => now(),
+    ])->save();
+
+    $this->post(route('login'), [
+        'email' => $user->email,
+        'password' => 'password',
+    ]);
+
+    $this->get(route('two-factor.login'))
+        ->assertOk()
+        ->assertInertia(fn (Assert $page) => $page
+            ->component('auth/TwoFactorChallenge'),
+        );
+});