Merge pull request #6 from iberianpig/fix/use-utf8-for-stdout

fix: force UTF-8 encoding for stdio streams

lib/model_context_protocol/transports/stdio.rb

@@ -9,6 +9,8 @@ module ModelContextProtocol
       def initialize(server)
         @server = server
         @open = false
+        $stdin.set_encoding("UTF-8")
+        $stdout.set_encoding("UTF-8")
         super
       end