complete story 1.3 with qa test & added future recommendations to the dev

app/Http/Middleware/SetLocale.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\App;
+use Symfony\Component\HttpFoundation\Response;
+
+class SetLocale
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        $locale = $request->user()?->preferred_language
+            ?? session('locale')
+            ?? config('app.locale', 'ar');
+
+        if (in_array($locale, ['ar', 'en'])) {
+            App::setLocale($locale);
+        }
+
+        return $next($request);
+    }
+}