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/ui/sidebar/SidebarGroupAction.vue

@@ -0,0 +1,27 @@
+<script setup lang="ts">
+import type { PrimitiveProps } from "reka-ui"
+import type { HTMLAttributes } from "vue"
+import { Primitive } from "reka-ui"
+import { cn } from "@/lib/utils"
+
+const props = defineProps<PrimitiveProps & {
+  class?: HTMLAttributes["class"]
+}>()
+</script>
+
+<template>
+  <Primitive
+    data-slot="sidebar-group-action"
+    data-sidebar="group-action"
+    :as="as"
+    :as-child="asChild"
+    :class="cn(
+      'text-sidebar-foreground ring-sidebar-ring hover:bg-sidebar-accent hover:text-sidebar-accent-foreground absolute top-3.5 right-3 flex aspect-square w-5 items-center justify-center rounded-md p-0 outline-hidden transition-transform focus-visible:ring-2 [&>svg]:size-4 [&>svg]:shrink-0',
+      'after:absolute after:-inset-2 md:after:hidden',
+      'group-data-[collapsible=icon]:hidden',
+      props.class,
+    )"
+  >
+    <slot />
+  </Primitive>
+</template>