refactor: Simplify Toolbar Measurement and Cleanup

- Removed toolbar measurement functionality from Toolset, including overflow checks and logging, to streamline the code.
- Eliminated unnecessary widget measurement calls in mode buttons and combo boxes, enhancing performance and clarity.
- Updated CMake configuration to exclude the widget measurement source file, reflecting the current project structure.

src/app/gui/editor_layout.cc

@@ -29,32 +29,12 @@ void Toolset::Begin() {
   button_count_ = 0;
   current_line_width_ = 0.0f;
   
-  // Begin measurement for debugging and test automation
-  WidgetMeasurement::Instance().BeginToolbarMeasurement("OverworldToolbar");
 }
 
 void Toolset::End() {
   // End the current line
   ImGui::NewLine();
   
-  // End measurement and check for overflow
-  WidgetMeasurement::Instance().EndToolbarMeasurement();
-  
-  float toolbar_width = WidgetMeasurement::Instance().GetToolbarWidth("OverworldToolbar");
-  float available_width = ImGui::GetContentRegionAvail().x;
-  
-  // Log warning if toolbar overflows (for debugging)
-  if (toolbar_width > available_width && toolbar_width > 0) {
-    // Only log once per second to avoid spam
-    static float last_warning_time = 0.0f;
-    float current_time = ImGui::GetTime();
-    if (current_time - last_warning_time > 1.0f) {
-      ImGui::SetTooltip("⚠️ Toolbar overflow: %.0fpx / %.0fpx available",
-                        toolbar_width, available_width);
-      last_warning_time = current_time;
-    }
-  }
-  
   ImGui::PopStyleVar(3);
   ImGui::Separator();
   in_toolbar_ = false;
@@ -97,10 +77,6 @@ bool Toolset::ModeButton(const char* icon, bool selected, const char* tooltip) {
     ImGui::PopStyleColor();
   }
   
-  // Measure this widget (without ID scope to avoid PopID issues)
-  std::string widget_id = tooltip ? tooltip : absl::StrFormat("Button_%d", button_count_);
-  WidgetMeasurement::Instance().MeasureLastItem(widget_id, "mode_button");
-  
   if (tooltip && ImGui::IsItemHovered()) {
     ImGui::SetTooltip("%s", tooltip);
   }
@@ -177,14 +153,10 @@ bool Toolset::AddProperty(const char* icon, const char* label,
 bool Toolset::AddCombo(const char* icon, int* current,
                        const char* const items[], int count) {
   ImGui::Text("%s", icon);
-  WidgetMeasurement::Instance().MeasureLastItem("combo_icon", "text");
-  
   ImGui::SameLine(0, 2);  // Reduce spacing between icon and combo
   ImGui::SetNextItemWidth(100);  // Slightly narrower for better fit
   
   bool changed = ImGui::Combo("##combo", current, items, count);
-  WidgetMeasurement::Instance().MeasureLastItem("combo_selector", "combo");
-  
   ImGui::SameLine();
   
   return changed;

src/app/gui/gui_library.cmake

@@ -17,7 +17,6 @@ set(
   app/gui/widgets/widget_state_capture.cc
   app/gui/ui_helpers.cc
   app/gui/editor_layout.cc
-  app/gui/widgets/widget_measurement.cc
   # Canvas system components
   app/gui/canvas/canvas_modals.cc
   app/gui/canvas/canvas_context_menu.cc