🎉 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>

frontend/tailwind.config.js

@@ -0,0 +1,62 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    './app/**/*.{vue,js,ts}',
+    './components/**/*.{vue,js,ts}',
+    './layouts/**/*.{vue,js,ts}',
+    './pages/**/*.{vue,js,ts}',
+  ],
+  theme: {
+    extend: {
+      colors: {
+        'sky-dark': {
+          DEFAULT: '#0a0e1a',
+          50: '#1a1f2e',
+          100: '#151a28',
+          200: '#10141f',
+          300: '#0c1019',
+          400: '#080c14',
+          500: '#0a0e1a',
+          600: '#060810',
+          700: '#04060c',
+          800: '#020408',
+          900: '#010204',
+        },
+        'sky-accent': {
+          DEFAULT: '#fa784f',
+          hover: '#fb8c68',
+          active: '#f96436',
+          50: '#fff4f0',
+          100: '#ffe8e0',
+          200: '#ffd1c1',
+          300: '#ffb9a2',
+          400: '#fca283',
+          500: '#fa784f',
+          600: '#e86940',
+          700: '#d65a31',
+          800: '#c44b22',
+          900: '#b23c13',
+        },
+        'sky-text': {
+          DEFAULT: '#f5f0e6',
+          muted: '#b8b3a8',
+          50: '#fdfcfa',
+          100: '#fbf9f5',
+          200: '#f7f3eb',
+          300: '#f5f0e6',
+          400: '#e8e3d9',
+          500: '#dbd6cc',
+          600: '#cec9bf',
+          700: '#c1bcb2',
+          800: '#b4afa5',
+          900: '#a7a298',
+        },
+      },
+      fontFamily: {
+        'narrative': ['Merriweather', 'Georgia', 'serif'],
+        'ui': ['Inter', 'system-ui', 'sans-serif'],
+      },
+    },
+  },
+  plugins: [],
+}