refactor: remove unnecessary super() call and add RSpec directory mapping for components

Based on review feedback from olleolleolle:
- Remove unnecessary super() call from ViewComponent initialize
- Add RSpec::Rails::DIRECTORY_MAPPINGS to auto-infer type: :component
- Remove explicit type: :component from component spec (now inferred)

Author: mroderick

app/components/chapters_sidebar_component.rb

@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 
 class ChaptersSidebarComponent < ViewComponent::Base
-  def initialize(chapters:, title: nil)
-    super()
+  # ViewComponent::Base does not define initialize, so super is not needed
+  def initialize(chapters:, title: nil) # rubocop:disable Lint/MissingSuper
     @chapters = chapters
     @title = title
   end

spec/components/chapters_sidebar_component_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 require 'view_component/test_helpers'
 
-RSpec.describe ChaptersSidebarComponent, type: :component do
+RSpec.describe ChaptersSidebarComponent do
   include ViewComponent::TestHelpers
   include Rails.application.routes.url_helpers
 

spec/rails_helper.rb

@@ -33,6 +33,10 @@
   # to work with controller specs
   config.infer_spec_type_from_file_location!
 
+  # Connect ViewComponent to RSpec, adding RSpec metadata type: :component.
+  # This extends Rails' own built-in (e.g. "type: :controller") metadata system.
+  RSpec::Rails::DIRECTORY_MAPPINGS[:component] = %w[spec/components]
+
   # Filter lines from Rails gems in backtraces.
   config.filter_rails_from_backtrace!
   # arbitrary gems may also be filtered from backtraces