Enhance EditorManager and input handling with performance logging and UI improvements

- Added performance logging to the LoadAssets method in EditorManager, tracking the time taken to load ROM assets.
- Implemented lazy loading of workspace presets in the DrawLayoutPresets method to improve UI responsiveness.
- Refactored menu item handling in the DrawMenu function to streamline the display of subitems and separators, enhancing user interaction.

src/app/editor/editor_manager.cc

@@ -1,5 +1,7 @@
 #include "editor_manager.h"
 
+#include <chrono>
+
 #include "absl/status/status.h"
 #include "absl/strings/match.h"
 #include "absl/strings/str_cat.h"
@@ -1190,6 +1192,9 @@ absl::Status EditorManager::LoadAssets() {
   if (!current_rom_ || !current_editor_set_) {
     return absl::FailedPreconditionError("No ROM or editor set loaded");
   }
+  
+  auto start_time = std::chrono::steady_clock::now();
+  
   current_editor_set_->overworld_editor_.Initialize();
   current_editor_set_->message_editor_.Initialize();
   ASSIGN_OR_RETURN(*gfx::Arena::Get().mutable_gfx_sheets(),
@@ -1202,6 +1207,11 @@ absl::Status EditorManager::LoadAssets() {
   RETURN_IF_ERROR(current_editor_set_->message_editor_.Load());
   RETURN_IF_ERROR(current_editor_set_->music_editor_.Load());
   RETURN_IF_ERROR(current_editor_set_->palette_editor_.Load());
+  
+  auto end_time = std::chrono::steady_clock::now();
+  auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end_time - start_time);
+  util::logf("ROM assets loaded in %lld ms", duration.count());
+  
   return absl::OkStatus();
 }
 
@@ -1715,6 +1725,11 @@ void EditorManager::DrawLayoutPresets() {
     ImGui::Separator();
     ImGui::Text("%s Custom Presets", ICON_MD_BOOKMARK);
     
+    // Lazy load workspace presets when UI is accessed
+    if (!workspace_presets_loaded_) {
+      RefreshWorkspacePresets();
+    }
+    
     for (const auto& preset : workspace_presets_) {
       if (ImGui::Button(absl::StrFormat("%s %s", ICON_MD_BOOKMARK, preset.c_str()).c_str(), ImVec2(-1, 0))) {
         LoadWorkspacePreset(preset);

src/app/gui/input.cc

@@ -402,24 +402,22 @@ void DrawMenu(Menu& menu) {
         if (!each_item.subitems.empty()) {
           if (ImGui::BeginMenu(each_item.name.c_str())) {
             for (const auto& each_subitem : each_item.subitems) {
-              if (ImGui::MenuItem(each_subitem.name.c_str(),
-                                  each_subitem.shortcut.c_str())) {
-                if (each_subitem.callback) each_subitem.callback();
-              } else if (each_subitem.name == kSeparator) {
+              if (each_subitem.name == kSeparator) {
                 ImGui::Separator();
+              } else if (ImGui::MenuItem(each_subitem.name.c_str(),
+                                         each_subitem.shortcut.c_str())) {
+                if (each_subitem.callback) each_subitem.callback();
               }
             }
             ImGui::EndMenu();
           }
-        } else if (each_item.name == kSeparator) {
-          ImGui::Separator();
         } else {
-          if (ImGui::MenuItem(each_item.name.c_str(),
+          if (each_item.name == kSeparator) {
+            ImGui::Separator();
+          } else if (ImGui::MenuItem(each_item.name.c_str(),
                               each_item.shortcut.c_str(),
                               each_item.enabled_condition())) {
             if (each_item.callback) each_item.callback();
-          } else if (each_item.name == kSeparator) {
-            ImGui::Separator();
           }
         }
       }
@@ -463,46 +461,46 @@ void MemoryEditorPopup(const std::string& label, std::span<uint8_t> memory) {
 // Custom hex input functions that properly respect width
 bool InputHexByteCustom(const char* label, uint8_t* data, float input_width) {
   ImGui::PushID(label);
-  
+
   // Create a simple hex input that respects width
   char buf[8];
   snprintf(buf, sizeof(buf), "%02X", *data);
-  
+
   ImGui::SetNextItemWidth(input_width);
-  bool changed = ImGui::InputText(label, buf, sizeof(buf), 
-                                  ImGuiInputTextFlags_CharsHexadecimal | 
-                                  ImGuiInputTextFlags_AutoSelectAll);
-  
+  bool changed = ImGui::InputText(
+      label, buf, sizeof(buf),
+      ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_AutoSelectAll);
+
   if (changed) {
     unsigned int temp;
     if (sscanf(buf, "%X", &temp) == 1) {
       *data = static_cast<uint8_t>(temp & 0xFF);
     }
   }
-  
+
   ImGui::PopID();
   return changed;
 }
 
 bool InputHexWordCustom(const char* label, uint16_t* data, float input_width) {
   ImGui::PushID(label);
-  
+
   // Create a simple hex input that respects width
   char buf[8];
   snprintf(buf, sizeof(buf), "%04X", *data);
-  
+
   ImGui::SetNextItemWidth(input_width);
-  bool changed = ImGui::InputText(label, buf, sizeof(buf), 
-                                  ImGuiInputTextFlags_CharsHexadecimal | 
-                                  ImGuiInputTextFlags_AutoSelectAll);
-  
+  bool changed = ImGui::InputText(
+      label, buf, sizeof(buf),
+      ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_AutoSelectAll);
+
   if (changed) {
     unsigned int temp;
     if (sscanf(buf, "%X", &temp) == 1) {
       *data = static_cast<uint16_t>(temp & 0xFFFF);
     }
   }
-  
+
   ImGui::PopID();
   return changed;
 }