feat: initialisation complète du projet CESIZen

- Backend Laravel 11 (API REST, JWT auth, PostgreSQL)
- Frontend Next.js 14 (React, TypeScript, Tailwind CSS)
- Docker Compose (PostgreSQL, backend, frontend)
- Modules : auth, profil, tracker émotions, informations, admin

backend/app/Http/Middleware/JwtMiddleware.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Tymon\JWTAuth\Facades\JWTAuth;
+use Tymon\JWTAuth\Exceptions\TokenExpiredException;
+use Tymon\JWTAuth\Exceptions\TokenInvalidException;
+use Tymon\JWTAuth\Exceptions\JWTException;
+
+class JwtMiddleware
+{
+    public function handle(Request $request, Closure $next)
+    {
+        try {
+            JWTAuth::parseToken()->authenticate();
+        } catch (TokenExpiredException $e) {
+            return response()->json(['message' => 'Token expiré'], 401);
+        } catch (TokenInvalidException $e) {
+            return response()->json(['message' => 'Token invalide'], 401);
+        } catch (JWTException $e) {
+            return response()->json(['message' => 'Token absent'], 401);
+        }
+
+        return $next($request);
+    }
+}