feat(web): overhaul frontend Paper Dark, migration Tailwind v4 et composants magazine

web/package.json

@@ -18,14 +18,18 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",
+    "@tailwindcss/postcss": "^4.1.18",
     "@types/node": "^24.10.1",
     "@types/react": "^19.2.5",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^5.1.1",
+    "autoprefixer": "^10.4.24",
     "eslint": "^9.39.1",
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
+    "postcss": "^8.5.6",
+    "tailwindcss": "^4.1.18",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.46.4",
     "vite": "^7.2.4"