Enhance AI Agent Integration and Tool Command Functionality

- Added support for JSON in CMake configuration for AI integrations.
- Implemented new tool commands: resource-list and dungeon-list-sprites.
- Created ToolDispatcher for managing tool command execution.
- Refactored CMake structure to include agent sources and improve build configuration.
- Updated agent roadmap and README documentation to reflect current status and next steps.

src/cli/service/ai/service_factory.cc

@@ -1,23 +1,32 @@
 #include "cli/service/ai/service_factory.h"
 
+#include <cstring>
 #include <iostream>
 
 #include "cli/service/ai/ai_service.h"
-#include "cli/service/ai/gemini_ai_service.h"
 #include "cli/service/ai/ollama_ai_service.h"
 
+#ifdef YAZE_WITH_JSON
+#include "cli/service/ai/gemini_ai_service.h"
+#endif
+
 namespace yaze {
 namespace cli {
 
 std::unique_ptr<AIService> CreateAIService() {
   // Priority: Ollama (local) > Gemini (remote) > Mock (testing)
   const char* provider_env = std::getenv("YAZE_AI_PROVIDER");
-  const char* gemini_key = std::getenv("GEMINI_API_KEY");
   const char* ollama_model = std::getenv("OLLAMA_MODEL");
+  const std::string provider = provider_env ? provider_env : "";
+  const bool gemini_requested = provider == "gemini";
+
+#ifdef YAZE_WITH_JSON
+  const char* gemini_key = std::getenv("GEMINI_API_KEY");
   const char* gemini_model = std::getenv("GEMINI_MODEL");
+#endif
 
   // Explicit provider selection
-  if (provider_env && std::string(provider_env) == "ollama") {
+  if (provider == "ollama") {
     OllamaConfig config;
 
     // Allow model override via env
@@ -39,6 +48,7 @@ std::unique_ptr<AIService> CreateAIService() {
   }
 
   // Gemini if API key provided
+#ifdef YAZE_WITH_JSON
   if (gemini_key && std::strlen(gemini_key) > 0) {
     GeminiConfig config(gemini_key);
 
@@ -59,6 +69,11 @@ std::unique_ptr<AIService> CreateAIService() {
     std::cout << "🤖 Using Gemini AI with model: " << config.model << std::endl;
     return service;
   }
+#else
+  if (gemini_requested || std::getenv("GEMINI_API_KEY")) {
+    std::cerr << "⚠️  Gemini support not available: rebuild with YAZE_WITH_JSON=ON" << std::endl;
+  }
+#endif
 
   // Default: Mock service for testing
   std::cout << "🤖 Using MockAIService (no LLM configured)" << std::endl;