[Bug Fix] Select only directories in ruby_ui:component:all

The batch generator filtered out only `.rb` files, so any other non-directory
entry at the source root (e.g. a macOS `.DS_Store`) survived and was passed as
a component name. Since the names are now generated in a single invocation,
`validate_components!` would reject the whole batch and abort the entire
all-components run. Components are always directories, so select directories
only — this excludes `.rb` files, dotfiles, and any stray file at once.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: jacksonpires

gem/lib/generators/ruby_ui/component/all_generator.rb

@@ -10,7 +10,11 @@ class AllGenerator < Rails::Generators::Base
         def generate_components
           say "Generating all components..."
 
-          folder_names = Dir.children(self.class.source_root).reject { |folder_name| folder_name.ends_with?(".rb") }
+          # Each component lives in its own directory; select directories only so stray
+          # files (e.g. base.rb or a macOS .DS_Store) are never passed as component names.
+          folder_names = Dir.children(self.class.source_root).select do |entry|
+            File.directory?(File.join(self.class.source_root, entry))
+          end
 
           run "bin/rails generate ruby_ui:component #{folder_names.join(" ")} --force #{options["force"]}"
         end