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/Http/Controllers/Controller.php

@@ -9,4 +9,29 @@ use Illuminate\Routing\Controller as BaseController;
 class Controller extends BaseController
 {
     use AuthorizesRequests, ValidatesRequests;
+
+    /**
+     * Generate a collision-safe filename using the authenticated user's name,
+     * a compact timestamp with millisecond precision, and the original extension.
+     *
+     * Format: {username}_{YYYYMMDD}_{HHmmss}_{ms}.{ext}
+     * Example: ghassanyusuf_20260301_120102_020.mp4
+     */
+    protected static function generateFilename(string $extension, ?string $username = null): string
+    {
+        $user = $username ?? (auth()->user()?->name ?? 'user');
+
+        // Sanitize: lowercase, keep only alphanumeric, collapse to max 20 chars
+        $slug = preg_replace('/[^a-z0-9]/', '', strtolower($user));
+        $slug = substr($slug ?: 'user', 0, 20);
+
+        $now = now();
+        $ms  = str_pad((int) ($now->microsecond / 1000), 3, '0', STR_PAD_LEFT);
+
+        $timestamp = $now->format('Ymd') . '_' . $now->format('His') . '_' . $ms;
+
+        $ext = ltrim(strtolower($extension), '.');
+
+        return "{$slug}_{$timestamp}.{$ext}";
+    }
 }