refactor(editor): reorganize includes and enhance EditorManager initialization

- Moved the declaration of `AgentControlServer` to a forward declaration in the header file for better clarity and organization.
- Updated the `EditorManager` constructor to initialize the version string and popup manager context.
- Added conditional compilation for gRPC-related includes and commented out the agent control server initialization for future reference.
- Ensured consistent definition of `IMGUI_DEFINE_MATH_OPERATORS` across multiple files to prevent potential issues with ImGui usage.

Benefits:
- Improved code organization and readability.
- Enhanced maintainability by clarifying the initialization process and managing includes effectively.

test/integration/asar_rom_test.cc

@@ -1,3 +1,8 @@
+// Must define before any ImGui includes
+#ifndef IMGUI_DEFINE_MATH_OPERATORS
+#define IMGUI_DEFINE_MATH_OPERATORS
+#endif
+
 #include <gtest/gtest.h>
 #include <filesystem>
 #include <fstream>

test/integration/zelda3/dungeon_object_rendering_tests.cc

@@ -2,6 +2,10 @@
 // Updated for DungeonEditorV2 architecture - uses ObjectDrawer (production system)
 // instead of the obsolete ObjectRenderer
 
+#ifndef IMGUI_DEFINE_MATH_OPERATORS
+#define IMGUI_DEFINE_MATH_OPERATORS
+#endif
+
 #include "app/zelda3/dungeon/object_drawer.h"
 #include "app/zelda3/dungeon/room.h"
 #include "app/zelda3/dungeon/room_object.h"