Add enhanced development server tools from React on Rails 16

Brought over development improvements from justin-808-test-update-ror-v15:

- Enhanced bin/dev script using ReactOnRails::Dev tools
- Added bin/dev-static for static asset development mode
- Added Procfile.dev-static-assets for webpack watching without HMR
- Added Procfile.dev-prod-assets for production asset development
- Updated Procfile.dev to use bin/rails instead of bundle exec

These improvements provide better development workflows:
- bin/dev: Default HMR development (existing)
- bin/dev static: Static assets with webpack watching
- Multiple Procfile options for different development modes

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: justin808

Procfile.dev

@@ -2,6 +2,6 @@
 # You can run these commands in separate shells
 rescript: yarn res:dev
 redis: redis-server
-rails: bundle exec rails s -p 3000
+rails: bin/rails s -p 3000
 wp-client: HMR=true RAILS_ENV=development NODE_ENV=development bin/shakapacker-dev-server
 wp-server: bundle exec rake react_on_rails:locale && HMR=true SERVER_BUNDLE_ONLY=yes bin/shakapacker --watch

Procfile.dev-prod-assets

@@ -0,0 +1,10 @@
+# You can run these commands in separate shells
+web: bin/rails s -p 3001
+redis: redis-server
+
+# Next line runs a watch process with webpack to compile the changed files.
+# When making frequent changes to client side assets, you will prefer building webpack assets
+# upon saving rather than when you refresh your browser page.
+# Note, if using React on Rails localization you will need to run
+# `bundle exec rake react_on_rails:locale` before you run bin/shakapacker
+webpack: sh -c 'bundle exec rake react_on_rails:locale && rm -rf public/packs/* || true && bin/shakapacker -w'

Procfile.dev-static-assets

@@ -0,0 +1,10 @@
+# You can run these commands in separate shells
+web: bin/rails s -p 3000
+redis: redis-server
+
+# Next line runs a watch process with webpack to compile the changed files.
+# When making frequent changes to client side assets, you will prefer building webpack assets
+# upon saving rather than when you refresh your browser page.
+# Note, if using React on Rails localization you will need to run
+# `bundle exec rake react_on_rails:locale` before you run bin/shakapacker
+webpack: sh -c 'bundle exec rake react_on_rails:locale && rm -rf public/packs/* || true && bin/shakapacker -w'

bin/dev

@@ -1,30 +1,31 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: true
 
-def installed?(process)
-  IO.popen "#{process} -v"
-rescue Errno::ENOENT
-  false
-end
+# ReactOnRails Development Server
+#
+# This script provides a simple interface to the ReactOnRails development
+# server management. The core logic is implemented in ReactOnRails::Dev
+# classes for better maintainability and testing.
+#
+# Each command uses a specific Procfile for process management:
+# - bin/dev (default/hmr): Uses Procfile.dev
+# - bin/dev static: Uses Procfile.dev-static-assets-assets
+# - bin/dev prod: Uses Procfile.dev-prod-assets
+#
+# To customize development environment:
+# 1. Edit the appropriate Procfile to modify which processes run
+# 2. Modify this script for project-specific command-line behavior
+# 3. Extend ReactOnRails::Dev classes in your Rails app for advanced customization
+# 4. Use classes directly: ReactOnRails::Dev::ServerManager.start(:development, "Custom.procfile")
 
-def run(process)
-  system "#{process} start -f Procfile.dev"
-rescue Errno::ENOENT
-  warn <<~MSG
-    ERROR:
-    Please ensure `Procfile.dev` exists in your project!
-  MSG
-  exit!
+begin
+  require "bundler/setup"
+  require "react_on_rails/dev"
+rescue LoadError
+  # Fallback for when gem is not yet installed
+  puts "Loading ReactOnRails development tools..."
+  require_relative "../../lib/react_on_rails/dev"
 end
 
-if installed? "overmind"
-  run "overmind"
-elsif installed? "foreman"
-  run "foreman"
-else
-  warn <<~MSG
-    NOTICE:
-    For this script to run, you need either 'overmind' or 'foreman' installed on your machine. Please try this script after installing one of them.
-  MSG
-  exit!
-end
+# Main execution
+ReactOnRails::Dev::ServerManager.run_from_command_line(ARGV)

bin/dev-static

@@ -1,30 +1,19 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: true
 
-def installed?(process)
-  IO.popen "#{process} -v"
-rescue Errno::ENOENT
-  false
-end
+# ReactOnRails Development Server - Static Assets Mode
+#
+# This runs development with static assets instead of HMR.
+# Useful when you want faster startup or HMR is causing issues.
 
-def run(process)
-  system "#{process} start -f Procfile.dev-static"
-rescue Errno::ENOENT
-  warn <<~MSG
-    ERROR:
-    Please ensure `Procfile.dev-static` exists in your project!
-  MSG
-  exit!
+begin
+  require "bundler/setup"
+  require "react_on_rails/dev"
+rescue LoadError
+  # Fallback for when gem is not yet installed
+  puts "Loading ReactOnRails development tools..."
+  require_relative "../../lib/react_on_rails/dev"
 end
 
-if installed? "overmind"
-  run "overmind"
-elsif installed? "foreman"
-  run "foreman"
-else
-  warn <<~MSG
-    NOTICE:
-    For this script to run, you need either 'overmind' or 'foreman' installed on your machine. Please try this script after installing one of them.
-  MSG
-  exit!
-end
+# Force static mode by passing 'static' argument
+ReactOnRails::Dev::ServerManager.run_from_command_line(['static'])