Add Path and Filename

src/FileSystem/Directories/PrivateDirectory.php

@@ -8,25 +8,30 @@
 use Eightfold\Amos\Php\Interfaces\Findable;
 use Eightfold\Amos\Php\Interfaces\Stringable;
 
+use Eightfold\Amos\FileSystem\Path;
+
 use Eightfold\Amos\FileSystem\Directories\Root;
 
 final class PrivateDirectory implements Findable, Stringable
 {
     private readonly SplFileInfo $fileInfo;
 
-    public static function inRoot(Root $root, string $at = ''): self
-    {
-        if (str_starts_with($at, '/') === false) {
-            $at = '/' . $at;
+    public static function inRoot(
+        Root $root,
+        string|Path $at = ''
+    ): self {
+        if (is_string($at)) {
+            $at = Path::fromString($at);
         }
         return new self($root, $at);
     }
 
+    // TODO: mark as final
     private function __construct(
         private readonly Root $root, // @phpstan-ignore-line
-        private readonly string $at = '' // @phpstan-ignore-line
+        private readonly Path $at // @phpstan-ignore-line
     ) {
-        $this->fileInfo = new SplFileInfo($root . $at);
+        $this->fileInfo = new SplFileInfo($root . $at->toString());
     }
 
     public function notFound(): bool