i18n vocabulaire exos (fr/pt-BR) + Web Push rappels de série

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

functional/users/src/Notifications/PushTestNotification.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Functional\Users\Notifications;
+
+use Illuminate\Notifications\Notification;
+use NotificationChannels\WebPush\WebPushChannel;
+use NotificationChannels\WebPush\WebPushMessage;
+
+/** Notification de test envoyée quand l'utilisateur active/teste les rappels push. */
+class PushTestNotification extends Notification
+{
+    /** @return array<int,string> */
+    public function via(object $notifiable): array
+    {
+        return [WebPushChannel::class];
+    }
+
+    public function toWebPush(object $notifiable): WebPushMessage
+    {
+        return (new WebPushMessage())
+            ->title('🔥 StreakFit')
+            ->body('Notifications activées — on te préviendra pour garder ta flamme !')
+            ->icon('/pwa-192.png')
+            ->badge('/pwa-192.png')
+            ->data(['url' => '/'])
+            ->options(['TTL' => 3600]);
+    }
+}