Add NAS file manager integration and all pending platform changes

- Installed p7h/nas-file-manager package via private VCS repo
- Published config/nas-file-manager.php with super_admin middleware restriction
- Added NAS env vars to .env.example
- Created admin/nas-storage page with connection info panel and file browser widget
- Added NAS Storage link to admin sidebar (super_admin only)
- Added SuperAdminController@nasStorage method and admin.nas-storage route
- Includes all accumulated branch changes: profile wall, 2FA, audit logs,
  settings panel, country/phone/timezone components, posts, slideshow,
  playlist shares, video downloads/shares, comment likes, notifications,
  social links, and more

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

app/Notifications/NewVideoUploaded.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Notifications;
+
+use App\Models\Video;
+use App\Models\User;
+use Illuminate\Notifications\Notification;
+
+class NewVideoUploaded extends Notification
+{
+    public function __construct(public Video $video, public User $uploader)
+    {
+    }
+
+    public function via(object $notifiable): array
+    {
+        return ['database'];
+    }
+
+    public function toArray(object $notifiable): array
+    {
+        return [
+            'type'             => 'new_video',
+            'video_id'         => $this->video->id,
+            'video_route_key'  => $this->video->getRouteKey(),
+            'video_title'      => $this->video->title,
+            'video_thumbnail'  => $this->video->thumbnail,
+            'uploader_id'      => $this->uploader->id,
+            'uploader_name'    => $this->uploader->name,
+            'uploader_avatar'  => $this->uploader->avatar_url,
+        ];
+    }
+}