feat(cli): expand agent command handling with new test and conversation features

- Added new source files for test commands and conversation tests to the agent's command handling structure.
- Removed the obsolete GUI command handler, redirecting users to the command registry for GUI automation commands.

Benefits:
- Enhanced testing capabilities and modularity within the agent's command management, facilitating future feature additions.

src/cli/agent.cmake

@@ -36,6 +36,9 @@ set(YAZE_AGENT_SOURCES
   cli/handlers/command_handlers.cc
   cli/handlers/agent/simple_chat_command.cc
   cli/handlers/agent/general_commands.cc
+  cli/handlers/agent/test_commands.cc
+  cli/handlers/agent/conversation_test.cc
+  cli/handlers/agent/common.cc
   cli/handlers/game/overworld_inspect.cc
   cli/handlers/game/message.cc
   cli/handlers/rom/mock_rom.cc

src/cli/handlers/agent.cc

@@ -23,7 +23,6 @@ namespace agent {
 absl::Status HandlePlanCommand(const std::vector<std::string>& args);
 absl::Status HandleTestCommand(const std::vector<std::string>& args);
 absl::Status HandleTestConversationCommand(const std::vector<std::string>& args);
-absl::Status HandleGuiCommand(const std::vector<std::string>& args);
 absl::Status HandleLearnCommand(const std::vector<std::string>& args);
 absl::Status HandleListCommand();
 absl::Status HandleDescribeCommand(const std::vector<std::string>& args);
@@ -116,7 +115,10 @@ absl::Status HandleAgentCommand(const std::vector<std::string>& arg_vec) {
   }
   
   if (subcommand == "gui") {
-    return agent::HandleGuiCommand(subcommand_args);
+    // GUI commands are in the registry (gui-place-tile, gui-click, etc.)
+    // Route to registry instead
+    return absl::InvalidArgumentError(
+        "Use 'z3ed gui-<command>' or see 'z3ed --help gui' for available GUI automation commands");
   }
   
   if (subcommand == "learn") {

src/cli/handlers/agent/conversation_test.cc

@@ -1,4 +1,3 @@
-#include "cli/handlers/commands.h"
 #include "app/rom.h"
 #include "app/core/project.h"
 #include "cli/handlers/rom/mock_rom.h"

src/cli/handlers/agent/test_commands.cc

@@ -1,5 +1,3 @@
-#include "cli/handlers/commands.h"
-
 #include <filesystem>
 #include <fstream>
 #include <iostream>