Fix RuboCop violations and update documentation

- Fix duplicate and incomplete test cases in utils_spec.rb
- Update configuration.md to reflect correct default for server_bundle_output_path
- Add clarification about enforce_private_server_bundles enforcement

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: justin808

docs/guides/configuration.md

@@ -131,11 +131,12 @@ ReactOnRails.configure do |config|
 
   # Directory where server bundles will be output during build process.
   # This allows organizing server-side rendering assets separately from client assets.
-  # Default is nil (disabled). Set to "ssr-generated" or your preferred directory to enable.
+  # Default is "ssr-generated". Set to your preferred directory path as needed.
   # config.server_bundle_output_path = "ssr-generated"
 
   # When enabled, enforces that server bundles are only loaded from private, designated locations
   # to prevent potential security risks from loading untrusted server-side code.
+  # When enabled, server_bundle_output_path must point to a private location outside the public directory.
   # Default is false for backward compatibility.
   config.enforce_private_server_bundles = false
 

spec/react_on_rails/utils_spec.rb

@@ -160,12 +160,6 @@ def mock_dev_server_running
                 expect(result).to eq(standard_path)
               end
 
-              it "returns environment-specific path when no bundle exists anywhere" do
-                allow(File).to receive(:exist?).and_call_original
-                allow(File).to receive(:exist?).and_return(false)
-
-              end
-
               it "returns environment-specific path when no bundle exists anywhere" do
                 allow(File).to receive(:exist?).and_call_original
                 allow(File).to receive(:exist?).and_return(false)