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/ImageUploadController.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Storage;
+
+class ImageUploadController extends Controller
+{
+    public function upload(Request $request)
+    {
+        $request->validate([
+            'image'    => 'required|string',
+            'folder'   => 'required|string|max:80',
+            'filename' => 'required|string|max:200',
+        ]);
+
+        $imageData  = $request->image;
+        $parts      = explode(';base64,', $imageData);
+        $typePart   = explode('image/', $parts[0]);
+        $extension  = $typePart[1] ?? 'png';
+        // Sanitize extension
+        $extension  = preg_replace('/[^a-z0-9]/', '', strtolower($extension));
+        if (!in_array($extension, ['png', 'jpg', 'jpeg', 'webp', 'gif'])) {
+            $extension = 'png';
+        }
+
+        $imageBinary = base64_decode($parts[1] ?? '');
+        if (!$imageBinary) {
+            return response()->json(['success' => false, 'message' => 'Invalid image data'], 422);
+        }
+
+        $folder   = trim($request->folder, '/');
+        $fileName = $request->filename . '.' . $extension;
+        $fullPath = $folder . '/' . $fileName;
+
+        Storage::disk('public')->put($fullPath, $imageBinary);
+
+        return response()->json([
+            'success' => true,
+            'path'    => $fullPath,
+            'url'     => asset('storage/' . $fullPath),
+        ]);
+    }
+}