🎉 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>

README.md

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+# Skycel
+
+Portfolio interactif gamifie - Monorepo Nuxt 4 + Laravel 12.
+
+## Structure
+
+```
+skycel/
+├── frontend/    # Application Nuxt 4 (SSR, TypeScript)
+├── api/         # Backend Laravel 12 (API-only)
+└── docs/        # Documentation projet
+```
+
+## Prerequisites
+
+- Node.js 18+
+- PHP 8.2+
+- Composer
+- MySQL / MariaDB
+
+## Getting Started
+
+### Frontend
+
+```bash
+cd frontend
+cp .env.example .env
+npm install
+npm run dev
+```
+
+### Backend
+
+```bash
+cd api
+cp .env.example .env
+composer install
+php artisan key:generate
+php artisan serve
+```