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/AuthenticationTest.php

@@ -0,0 +1,84 @@
+<?php
+
+use App\Models\User;
+use Illuminate\Support\Facades\RateLimiter;
+use Laravel\Fortify\Features;
+
+test('login screen can be rendered', function () {
+    $response = $this->get(route('login'));
+
+    $response->assertOk();
+});
+
+test('users can authenticate using the login screen', function () {
+    $user = User::factory()->create();
+
+    $response = $this->post(route('login.store'), [
+        'email' => $user->email,
+        'password' => 'password',
+    ]);
+
+    $this->assertAuthenticated();
+    $response->assertRedirect(route('dashboard', absolute: false));
+});
+
+test('users with two factor enabled are redirected to two factor challenge', 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();
+
+    $response = $this->post(route('login'), [
+        'email' => $user->email,
+        'password' => 'password',
+    ]);
+
+    $response->assertRedirect(route('two-factor.login'));
+    $response->assertSessionHas('login.id', $user->id);
+    $this->assertGuest();
+});
+
+test('users can not authenticate with invalid password', function () {
+    $user = User::factory()->create();
+
+    $this->post(route('login.store'), [
+        'email' => $user->email,
+        'password' => 'wrong-password',
+    ]);
+
+    $this->assertGuest();
+});
+
+test('users can logout', function () {
+    $user = User::factory()->create();
+
+    $response = $this->actingAs($user)->post(route('logout'));
+
+    $this->assertGuest();
+    $response->assertRedirect(route('home'));
+});
+
+test('users are rate limited', function () {
+    $user = User::factory()->create();
+
+    RateLimiter::increment(md5('login'.implode('|', [$user->email, '127.0.0.1'])), amount: 5);
+
+    $response = $this->post(route('login.store'), [
+        'email' => $user->email,
+        'password' => 'wrong-password',
+    ]);
+
+    $response->assertTooManyRequests();
+});