Restore improved bin/dev from generator

The improved bin/dev script provides better development server management
through ReactOnRails::Dev::ServerManager with support for different modes
(HMR, static assets, production assets)

Author: justin808

bin/dev

@@ -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:
@@ -18,14 +18,8 @@
 # 3. Extend ReactOnRails::Dev classes in your Rails app for advanced customization
 # 4. Use classes directly: ReactOnRails::Dev::ServerManager.start(:development, "Custom.procfile")
 
-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
+require "bundler/setup"
+require "react_on_rails/dev"
 
 # Main execution
-ReactOnRails::Dev::ServerManager.run_from_command_line(ARGV)
+ReactOnRails::Dev::ServerManager.run_from_command_line(ARGV)