feat: initialiser le projet CVP (Next.js 14 + FastAPI + PostgreSQL)

- Frontend : Next.js 14 App Router, TypeScript strict, Tailwind 3, shadcn/ui, next-intl (fr/en)
- Backend : FastAPI, SQLAlchemy 2 async, Alembic, Pydantic 2, Python 3.11
- Infrastructure : Docker Compose (PostgreSQL 16 + Ollama)
- Tooling : ESLint + Prettier (frontend), Ruff (backend), pytest
- Structure complète des dossiers avec pages et routers placeholder

frontend/package.json

@@ -0,0 +1,38 @@
+{
+  "name": "frontend",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint",
+    "lint:fix": "next lint --fix",
+    "format": "prettier --write \"src/**/*.{ts,tsx,json,css}\"",
+    "format:check": "prettier --check \"src/**/*.{ts,tsx,json,css}\"",
+    "type-check": "tsc --noEmit"
+  },
+  "dependencies": {
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
+    "lucide-react": "^1.8.0",
+    "next": "14.2.35",
+    "next-intl": "^4.9.1",
+    "react": "^18",
+    "react-dom": "^18",
+    "tailwind-merge": "^3.5.0",
+    "tailwindcss-animate": "^1.0.7"
+  },
+  "devDependencies": {
+    "@types/node": "^20",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
+    "eslint": "^8",
+    "eslint-config-next": "14.2.35",
+    "eslint-config-prettier": "^10.1.8",
+    "postcss": "^8",
+    "prettier": "^3.8.2",
+    "tailwindcss": "^3.4.1",
+    "typescript": "^5"
+  }
+}