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>

resources/js/layouts/auth/AuthSimpleLayout.vue

@@ -0,0 +1,43 @@
+<script setup lang="ts">
+import { Link } from '@inertiajs/vue3';
+import AppLogoIcon from '@/components/AppLogoIcon.vue';
+import { home } from '@/routes';
+
+defineProps<{
+    title?: string;
+    description?: string;
+}>();
+</script>
+
+<template>
+    <div
+        class="flex min-h-svh flex-col items-center justify-center gap-6 bg-background p-6 md:p-10"
+    >
+        <div class="w-full max-w-sm">
+            <div class="flex flex-col gap-8">
+                <div class="flex flex-col items-center gap-4">
+                    <Link
+                        :href="home()"
+                        class="flex flex-col items-center gap-2 font-medium"
+                    >
+                        <div
+                            class="mb-1 flex h-9 w-9 items-center justify-center rounded-md"
+                        >
+                            <AppLogoIcon
+                                class="size-9 fill-current text-[var(--foreground)] dark:text-white"
+                            />
+                        </div>
+                        <span class="sr-only">{{ title }}</span>
+                    </Link>
+                    <div class="space-y-2 text-center">
+                        <h1 class="text-xl font-medium">{{ title }}</h1>
+                        <p class="text-center text-sm text-muted-foreground">
+                            {{ description }}
+                        </p>
+                    </div>
+                </div>
+                <slot />
+            </div>
+        </div>
+    </div>
+</template>