complete story 4.7 with qa tests

app/Notifications/TimelineUpdateNotification.php

@@ -16,7 +16,7 @@ class TimelineUpdateNotification extends Notification implements ShouldQueue
      * Create a new notification instance.
      */
     public function __construct(
-        public TimelineUpdate $timelineUpdate
+        public TimelineUpdate $update
     ) {}
 
     /**
@@ -35,13 +35,13 @@ class TimelineUpdateNotification extends Notification implements ShouldQueue
     public function toMail(object $notifiable): MailMessage
     {
         $locale = $notifiable->preferred_language ?? 'ar';
+        $timeline = $this->update->timeline;
 
         return (new MailMessage)
-            ->subject($this->getSubject($locale))
-            ->view('emails.timeline-update', [
-                'timelineUpdate' => $this->timelineUpdate,
-                'timeline' => $this->timelineUpdate->timeline,
-                'locale' => $locale,
+            ->subject($this->getSubject($locale, $timeline->case_name))
+            ->markdown('emails.timeline.update.'.$locale, [
+                'update' => $this->update,
+                'timeline' => $timeline,
                 'user' => $notifiable,
             ]);
     }
@@ -49,11 +49,11 @@ class TimelineUpdateNotification extends Notification implements ShouldQueue
     /**
      * Get the subject based on locale.
      */
-    private function getSubject(string $locale): string
+    private function getSubject(string $locale, string $caseName): string
     {
         return $locale === 'ar'
-            ? 'تحديث جديد على قضيتك'
-            : 'New Update on Your Case';
+            ? "تحديث جديد على قضيتك: {$caseName}"
+            : "New update on your case: {$caseName}";
     }
 
     /**
@@ -65,8 +65,8 @@ class TimelineUpdateNotification extends Notification implements ShouldQueue
     {
         return [
             'type' => 'timeline_update',
-            'timeline_update_id' => $this->timelineUpdate->id,
-            'timeline_id' => $this->timelineUpdate->timeline_id,
+            'timeline_update_id' => $this->update->id,
+            'timeline_id' => $this->update->timeline_id,
         ];
     }
 }