https://claude.ai/code/session_018Ym45siELMvsBQj4w9QAXf

diff --git a/lib/app.rb b/lib/app.rb
index 136c78f..f72658a 100644
--- a/lib/app.rb
+++ b/lib/app.rb
@@ -13,7 +13,7 @@ module Domus
     end
 
     def file_path(record)
-      ::File.join(config.storage_path, "files", "#{record[:id]}#{record[:extension]}")
+      config.storage_path / "files" / "#{record[:id]}#{record[:extension]}"
     end
   end
 end
diff --git a/lib/config.rb b/lib/config.rb
index 0081047..4200726 100644
--- a/lib/config.rb
+++ b/lib/config.rb
@@ -1,17 +1,19 @@
 # rbs_inline: enabled
 # frozen_string_literal: true
 
+require "pathname"
+
 module Domus
   Config = Data.define(
     :database_url, #: String
-    :storage_path #: String
+    :storage_path #: Pathname
   )
 
   class Config
     #: () -> Config
     def self.env = new(
       database_url: ENV.fetch("DATABASE_URL") { "db/domus.db" },
-      storage_path: ENV.fetch("STORAGE_PATH") { "storage" },
+      storage_path: Pathname(ENV.fetch("STORAGE_PATH") { "storage" }),
     )
   end
 end