Refactor ARGV handling by centralizing in Ocran.init

- Centralized the handling of ARGV to the Ocran.init method to simplify how command-line arguments are managed within the application.
- Removed the ARGV parameter from the Ocran.init method, as it now directly accesses ARGV internally. This change reduces redundancy and improves the clarity of method interfaces.

This update streamlines the initialization process of Ocran, ensuring that command-line arguments are handled consistently and more efficiently.

bin/ocran

@@ -285,9 +285,10 @@ EOF
     @rubyopt ||= @options[:rubyopt] || ENV["RUBYOPT"] || ""
   end
 
-  def Ocran.init(argv)
+  def Ocran.init
     save_environment
-    parseargs(argv)
+    parseargs(ARGV)
+    ARGV.replace(Ocran.arg)
     IGNORE_MODULES.push(*ObjectSpace.each_object(Module).to_a)
   end
 
@@ -806,8 +807,7 @@ EOF
 end # module Ocran
 
 if File.basename(__FILE__) == File.basename($PROGRAM_NAME)
-  Ocran.init(ARGV)
-  ARGV.replace(Ocran.arg)
+  Ocran.init
 
   unless Ocran.main_script.exist?
     Ocran.fatal_error "#{Ocran.main_script} was not found!"