🎉 Init monorepo Nuxt 4 + Laravel 12 (Story 1.1)

Setup complet de l'infrastructure projet :
- Frontend Nuxt 4 (SSR, TypeScript, i18n, Pinia, TailwindCSS)
- Backend Laravel 12 API-only avec middleware X-API-Key et CORS
- Design tokens (sky-dark, sky-accent, sky-text) et polices (Merriweather, Inter)
- Documentation planning et implementation artifacts

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

api/bootstrap/app.php

@@ -0,0 +1,20 @@
+<?php
+
+use Illuminate\Foundation\Application;
+use Illuminate\Foundation\Configuration\Exceptions;
+use Illuminate\Foundation\Configuration\Middleware;
+
+return Application::configure(basePath: dirname(__DIR__))
+    ->withRouting(
+        api: __DIR__.'/../routes/api.php',
+        commands: __DIR__.'/../routes/console.php',
+        health: '/up',
+    )
+    ->withMiddleware(function (Middleware $middleware): void {
+        $middleware->api(append: [
+            \App\Http\Middleware\VerifyApiKey::class,
+        ]);
+    })
+    ->withExceptions(function (Exceptions $exceptions): void {
+        //
+    })->create();