Apply autofix formatting and resolve linting violations

- Run rake autofix to apply ESLint, Prettier, and RuboCop corrections
- Fix cyclomatic complexity violations with rubocop disable comments
- Resolve string literal style violations (single to double quotes)
- Fix RSpec verifying doubles by disabling rule for external gem mocks
- Break long lines in test specifications for readability
- All linting violations now resolved for CI compatibility

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

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

Author: justin808

lib/react_on_rails/doctor.rb

@@ -90,11 +90,11 @@ def run_all_checks
         send(check_method)
 
         # Only print header if messages were added
-        if checker.messages.length > initial_message_count
-          print_section_header(section_name)
-          print_recent_messages(initial_message_count)
-          puts
-        end
+        next unless checker.messages.length > initial_message_count
+
+        print_section_header(section_name)
+        print_recent_messages(initial_message_count)
+        puts
       end
     end
 
@@ -104,7 +104,7 @@ def print_section_header(section_name)
     end
 
     def print_recent_messages(start_index)
-      checker.messages[start_index..-1].each do |message|
+      checker.messages[start_index..].each do |message|
         color = MESSAGE_COLORS[message[:type]] || :blue
         puts Rainbow(message[:content]).send(color)
       end
@@ -317,7 +317,7 @@ def print_summary_message(counts)
       puts Rainbow(summary_text).blue
     end
 
-    def print_detailed_results_if_needed(counts)
+    def print_detailed_results_if_needed(_counts)
       # Skip detailed results since messages are now printed under section headers
       # Only show detailed results in verbose mode for debugging
       return unless verbose
@@ -725,7 +725,7 @@ def relativize_path(absolute_path)
       project_root = Dir.pwd
       if absolute_path.start_with?(project_root)
         # Remove project root and leading slash to make it relative
-        relative = absolute_path.sub(project_root, "").sub(/^\//, "")
+        relative = absolute_path.sub(project_root, "").sub(%r{^/}, "")
         relative.empty? ? "." : relative
       else
         absolute_path

lib/react_on_rails/system_checker.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'open3'
+require "open3"
 
 module ReactOnRails
   # SystemChecker provides validation methods for React on Rails setup
@@ -58,7 +58,7 @@ def check_node_installation
     end
 
     def check_node_version
-      stdout, stderr, status = Open3.capture3('node', '--version')
+      stdout, stderr, status = Open3.capture3("node", "--version")
 
       # Use stdout if available, fallback to stderr if stdout is empty
       node_version = stdout.strip
@@ -447,6 +447,7 @@ def check_gemfile_version_patterns
     end
     # rubocop:enable Metrics/CyclomaticComplexity
 
+    # rubocop:disable Metrics/CyclomaticComplexity
     def report_dependency_versions(package_json)
       all_deps = package_json["dependencies"]&.merge(package_json["devDependencies"] || {}) || {}
 
@@ -463,6 +464,7 @@ def report_dependency_versions(package_json)
         add_success("✅ React DOM #{react_dom_version}")
       end
     end
+    # rubocop:enable Metrics/CyclomaticComplexity
 
     def extract_major_minor_version(version_string)
       # Extract major.minor from version string like "8.1.0" or "7.2.1"

spec/lib/react_on_rails/doctor_spec.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+# rubocop:disable RSpec/VerifiedDoubles
+
 require_relative "../../react_on_rails/spec_helper"
 require_relative "../../../lib/react_on_rails/doctor"
 
@@ -27,8 +29,13 @@
       allow(File).to receive_messages(exist?: false, directory?: false)
 
       # Mock the new server bundle path methods
-      allow(doctor).to receive_messages("`": "", determine_server_bundle_path: "app/javascript/packs/server-bundle.js",
-                                        server_bundle_filename: "server-bundle.js", npm_test_script?: false, yarn_test_script?: false)
+      allow(doctor).to receive_messages(
+        "`": "",
+        determine_server_bundle_path: "app/javascript/packs/server-bundle.js",
+        server_bundle_filename: "server-bundle.js",
+        npm_test_script?: false,
+        yarn_test_script?: false
+      )
 
       # Mock the checker to avoid actual system calls
       checker = instance_double(ReactOnRails::SystemChecker)
@@ -178,3 +185,5 @@
     end
   end
 end
+
+# rubocop:enable RSpec/VerifiedDoubles