fix(local): create upload subdirectories as public (0755), not private (0700) (#489)

The Local adapter uses Flysystem v3's LocalFilesystemAdapter, which
defaults the directory visibility to PRIVATE. PRIVATE maps to 0700,
so each daily folder under public/assets/files (e.g. 2026-04-30/) is
created without group/other read/execute permissions, and uploaded
images cannot be served by the web server even though the file
itself is written 0644.

Pass a PortableVisibilityConverter with PUBLIC as the default
directory visibility so new daily folders are created 0755, matching
the v1.x behaviour and the expected 'images served, files protected'
posture.

Closes #488.

Signed-off-by: SAY-5 <say.apm35@gmail.com>

Author: SAY-5

src/Adapters/Manager.php

@@ -29,6 +29,8 @@
 use Illuminate\Support\Str;
 use League\Flysystem\AwsS3V3\AwsS3V3Adapter;
 use League\Flysystem\Local\LocalFilesystemAdapter;
+use League\Flysystem\UnixVisibility\PortableVisibilityConverter;
+use League\Flysystem\Visibility;
 use Overtrue\Flysystem\Qiniu\QiniuAdapter;
 use Qiniu\Http\Client as QiniuClient;
 
@@ -165,7 +167,10 @@ protected function imgur(Util $util)
     protected function local(Util $util)
     {
         return new Adapters\Local(
-            new LocalFilesystemAdapter($this->paths->public.'/assets/files'),
+            new LocalFilesystemAdapter(
+                $this->paths->public.'/assets/files',
+                PortableVisibilityConverter::fromArray([], Visibility::PUBLIC)
+            ),
             $this->settings,
             $this->url,
             $this->config