feat: upgrade to React on Rails v16 enhanced bin/dev and Procfile system

- Update bin/dev to use new ReactOnRails::Dev::ServerManager from PR #1790
- Add support for multiple development modes:
  * bin/dev (HMR development) - default mode
  * bin/dev static - static assets with auto-recompilation
  * bin/dev prod - production-optimized assets
  * bin/dev kill - clean process termination
  * bin/dev help - comprehensive help system
- Rename Procfile.dev-static to Procfile.dev-static-assets for v16 convention
- Add Procfile.dev-prod-assets for production-like asset development
- Preserve project-specific customizations (ReScript, locale tasks)
- Enhanced developer experience with better UI, error handling, and process management

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

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

Author: ihabadham

Procfile.dev-prod-assets

@@ -1,10 +1,9 @@
-# You can run these commands in separate shells
-web: bin/rails s -p 3001
-redis: redis-server
+# Procfile for development with production assets
+# Uses production-optimized, precompiled assets with development environment
+# Uncomment additional processes as needed for your app
 
-# 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'
+rails: bundle exec rails s -p 3001
+rescript: yarn res:dev
+# sidekiq: bundle exec sidekiq -C config/sidekiq.yml
+# redis: redis-server  # Redis is already running system-wide
+# mailcatcher: mailcatcher --foreground

Procfile.dev-static

@@ -1,10 +1,12 @@
+# Procfile for development with static asset compilation
 # You can run these commands in separate shells
-web: bin/rails s -p 3000
-redis: redis-server
+web: bin/rails server -p 3000
+rescript: yarn res:dev
+# redis: redis-server  # Redis is already running system-wide
 
 # 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'
+js: sh -c 'bundle exec rake react_on_rails:locale && rm -rf public/packs/* || true && bin/shakapacker -w'

Procfile.dev-static-assets

@@ -9,7 +9,7 @@
 #
 # 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 static: Uses Procfile.dev-static-assets
 # - bin/dev prod: Uses Procfile.dev-prod-assets
 #
 # To customize development environment:
@@ -28,4 +28,19 @@ rescue LoadError
 end
 
 # Main execution
-ReactOnRails::Dev::ServerManager.run_from_command_line(ARGV)
+case ARGV[0]
+when "production-assets", "prod"
+  ReactOnRails::Dev::ServerManager.start(:production_like, "Procfile.dev-prod-assets")
+when "static"
+  ReactOnRails::Dev::ServerManager.start(:static, "Procfile.dev-static-assets")
+when "kill"
+  ReactOnRails::Dev::ServerManager.kill_processes
+when "help", "--help", "-h"
+  ReactOnRails::Dev::ServerManager.show_help
+when "hmr", nil
+  ReactOnRails::Dev::ServerManager.start(:development, "Procfile.dev")
+else
+  puts "Unknown argument: #{ARGV[0]}"
+  puts "Run 'bin/dev help' for usage information"
+  exit 1
+end