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/components/AppLogo.vue

@@ -0,0 +1,16 @@
+<script setup lang="ts">
+import AppLogoIcon from '@/components/AppLogoIcon.vue';
+</script>
+
+<template>
+    <div
+        class="flex aspect-square size-8 items-center justify-center rounded-md bg-sidebar-primary text-sidebar-primary-foreground"
+    >
+        <AppLogoIcon class="size-5 fill-current text-white dark:text-black" />
+    </div>
+    <div class="ml-1 grid flex-1 text-left text-sm">
+        <span class="mb-0.5 truncate leading-tight font-semibold"
+            >{{ $page.props.name }}</span
+        >
+    </div>
+</template>