feat: Integrate ProjectFileEditor into EditorManager for enhanced project file handling

- Initialized ProjectFileEditor within EditorManager to facilitate project file editing.
- Added menu options for editing project files, including loading and error handling with toast notifications.
- Updated the DrawMenuBar method to render the ProjectFileEditor interface.
- Included necessary header for ProjectFileEditor in editor_manager.h.

src/app/editor/agent/agent_chat_widget.cc

@@ -670,7 +670,8 @@ void AgentChatWidget::Draw() {
     
     ImGui::EndTabBar();
   }
-  
+
+  ImGui::PopStyleVar(4); // Pop the 4 style vars we pushed
   ImGui::End();
 }
 

src/app/editor/code/project_file_editor.cc

@@ -25,7 +25,7 @@ void ProjectFileEditor::Draw() {
   
   ImGui::SetNextWindowSize(ImVec2(900, 700), ImGuiCond_FirstUseEver);
   if (!ImGui::Begin(absl::StrFormat("%s Project Editor###ProjectFileEditor",
-                                     ICON_MD_EDIT_DOCUMENT).c_str(),
+                                     ICON_MD_DESCRIPTION).c_str(),
                      &active_)) {
     ImGui::End();
     return;
@@ -239,7 +239,7 @@ void ProjectFileEditor::ValidateContent() {
   
   for (const auto& line : lines) {
     line_num++;
-    std::string trimmed = absl::StripAsciiWhitespace(line);
+    std::string trimmed = std::string(absl::StripAsciiWhitespace(line));
     
     // Skip empty lines and comments
     if (trimmed.empty() || trimmed[0] == '#') continue;

src/app/editor/editor_library.cmake

@@ -20,6 +20,7 @@ set(
   app/editor/message/message_data.cc
   app/editor/message/message_preview.cc
   app/editor/code/assembly_editor.cc
+  app/editor/code/project_file_editor.cc
   app/editor/graphics/screen_editor.cc
   app/editor/graphics/graphics_editor.cc
   app/editor/graphics/palette_editor.cc

src/app/editor/editor_manager.cc

@@ -232,6 +232,9 @@ void EditorManager::Initialize(const std::string& filename) {
   // Set the popup manager in the context
   context_.popup_manager = popup_manager_.get();
 
+  // Initialize project file editor
+  project_file_editor_.SetToastManager(&toast_manager_);
+
 #ifdef YAZE_WITH_GRPC
   // Initialize the agent editor
   agent_editor_.Initialize(&toast_manager_, &proposal_drawer_);
@@ -482,6 +485,19 @@ void EditorManager::Initialize(const std::string& filename) {
   project_menu_subitems.emplace_back(
       "Save Project", "", [this]() { status_ = SaveProject(); },
       [this]() { return current_project_.project_opened(); });
+  project_menu_subitems.emplace_back(gui::kSeparator, "", nullptr, []() { return true; });
+  project_menu_subitems.emplace_back(
+      absl::StrCat(ICON_MD_EDIT, " Edit Project File"), "",
+      [this]() { 
+        project_file_editor_.set_active(true);
+        if (current_project_.project_opened() && !current_project_.filepath.empty()) {
+          auto status = project_file_editor_.LoadFile(current_project_.filepath);
+          if (!status.ok()) {
+            toast_manager_.Show(std::string(status.message()), editor::ToastType::kError);
+          }
+        }
+      },
+      [this]() { return current_project_.project_opened(); });
   project_menu_subitems.emplace_back("Save Workspace Layout", "", [this]() {
     ImGuiID dockspace_id = ImGui::GetID("MyDockSpace");
     ImGui::SaveIniSettingsToDisk("yaze_workspace.ini");
@@ -1249,6 +1265,9 @@ void EditorManager::DrawMenuBar() {
   if (show_asm_editor_ && current_editor_set_) {
     current_editor_set_->assembly_editor_.Update(show_asm_editor_);
   }
+  
+  // Project file editor
+  project_file_editor_.Draw();
   if (show_performance_dashboard_) {
     gfx::PerformanceDashboard::Get().SetVisible(true);
     gfx::PerformanceDashboard::Get().Update();

src/app/editor/editor_manager.h

@@ -13,6 +13,7 @@
 #include "app/core/project.h"
 #include "app/editor/code/assembly_editor.h"
 #include "app/editor/code/memory_editor.h"
+#include "app/editor/code/project_file_editor.h"
 #include "app/editor/dungeon/dungeon_editor_v2.h"
 #include "app/editor/graphics/graphics_editor.h"
 #include "app/editor/graphics/palette_editor.h"
@@ -184,6 +185,9 @@ class EditorManager {
   ProposalDrawer proposal_drawer_;
   bool show_proposal_drawer_ = false;
 
+  // Project file editor
+  ProjectFileEditor project_file_editor_;
+
 #ifdef YAZE_WITH_GRPC
   // Agent editor - manages chat, collaboration, and network coordination
   AgentEditor agent_editor_;