Fix shakapacker_examples rake task issues

 - Add missing space in rails_options concatenation - Use npm install instead of yarn to match Shakapacker's default 🤖 Generated with Claude Code Co-Authored-By: Claude <noreply@anthropic.com>

Author: ihabadham

rakelib/shakapacker_examples.rake

@@ -29,7 +29,7 @@ namespace :shakapacker_examples do # rubocop:disable Metrics/BlockLength
  task example_type.gen_task_name_short => example_type.clobber_task_name do
  puts "Running shakapacker_examples:#{example_type.gen_task_name_short}"
  mkdir_p(example_type.dir)
- example_type.rails_options += "--skip-javascript"
+ example_type.rails_options += " --skip-javascript"
  sh_in_dir(examples_dir, "rails new #{example_type.name} #{example_type.rails_options}")
  sh_in_dir(example_type.dir, "touch .gitignore")
  sh_in_dir(example_type.dir,
@@ -38,7 +38,7 @@ namespace :shakapacker_examples do # rubocop:disable Metrics/BlockLength
  bundle_install_in(example_type.dir)
  sh_in_dir(example_type.dir, "rake shakapacker:install")
  sh_in_dir(example_type.dir, example_type.generator_shell_commands)
- sh_in_dir(example_type.dir, "yarn")
+ sh_in_dir(example_type.dir, "npm install")
  end
  end