feat(mcp): Validate C++ tools against real-world gencpp components and improve enum support

tests/assets/cpp_samples/component_registry.h

@@ -0,0 +1,43 @@
+#pragma once
+
+#include "base_component.h"
+#include <map>
+#include <string>
+#include <functional>
+
+namespace gencpp {
+namespace registry {
+
+class ComponentRegistry {
+public:
+    using ComponentCreator = std::function<std::unique_ptr<core::BaseComponent<void*>>()>;
+
+    static ComponentRegistry& Instance();
+
+    void Register(const std::string& type, ComponentCreator creator);
+    std::unique_ptr<core::BaseComponent<void*>> Create(const std::string& type);
+
+    class Iterator {
+    public:
+        using MapIterator = std::map<std::string, ComponentCreator>::iterator;
+        
+        Iterator(MapIterator it) : m_it(it) {}
+        
+        bool operator!=(const Iterator& other) const { return m_it != other.m_it; }
+        void operator++() { ++m_it; }
+        const std::string& GetType() const { return m_it->first; }
+
+    private:
+        MapIterator m_it;
+    };
+
+    Iterator Begin() { return Iterator(m_creators.begin()); }
+    Iterator End() { return Iterator(m_creators.end()); }
+
+private:
+    ComponentRegistry() = default;
+    std::map<std::string, ComponentCreator> m_creators;
+};
+
+} // namespace registry
+} // namespace gencpp