📁 File Storage
Disk: local → storage/app/demo/
Upload File
Storage::disk('local')->put($path, $data);
Storage::disk('local')->get($path);
Storage::disk('local')->exists($path);
Storage::disk('local')->delete($path);
Storage::disk('local')->files('demo');
Storage::disk('local')->download($path);
Storage::disk('s3')->put(...); // AWS S3
$file->store('demo', 'local');
$file->storeAs('demo', 'name.txt');
