Internal Release 0.2.4

- remove activesupport as a runtime dependency
- use alternative to activesupport/inflector methods
- use `json_rpc_handler` gem
- add json_rpc_handler to gem dependencies

model_context_protocol.gemspec

@@ -27,5 +27,6 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_dependency("activesupport")
+  spec.add_dependency("json_rpc_handler", "~> 0.1")
+  spec.add_development_dependency("activesupport")
 end