diff --git a/src/olympic/studio/applib/src/CMakeLists.txt b/src/olympic/studio/applib/src/CMakeLists.txt
index 52788ec9..1c94ba44 100644
--- a/src/olympic/studio/applib/src/CMakeLists.txt
+++ b/src/olympic/studio/applib/src/CMakeLists.txt
@@ -2,6 +2,7 @@ add_library(
 	StudioAppLib
 		aboutpopup.cpp
 		clawviewer.cpp
+		deleteconfirmation.cpp
 		filedialogmanager.cpp
 		main.cpp
 		newmenu.cpp
diff --git a/src/olympic/studio/applib/src/deleteconfirmation.cpp b/src/olympic/studio/applib/src/deleteconfirmation.cpp
new file mode 100644
index 00000000..c81329ee
--- /dev/null
+++ b/src/olympic/studio/applib/src/deleteconfirmation.cpp
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#include <studio/imguiutil.hpp>
+
+#include "deleteconfirmation.hpp"
+
+namespace studio {
+
+DeleteConfirmation::DeleteConfirmation(StudioContext &ctx) noexcept:
+	m_ctx{ctx} {
+	setTitle("Delete Item");
+}
+
+void DeleteConfirmation::openPath(ox::StringViewCR path) noexcept {
+	open();
+	m_path = path;
+}
+
+void DeleteConfirmation::open() noexcept {
+	m_path = "";
+	m_stage = Stage::Opening;
+}
+
+void DeleteConfirmation::close() noexcept {
+	m_stage = Stage::Closed;
+	m_open = false;
+}
+
+bool DeleteConfirmation::isOpen() const noexcept {
+	return m_open;
+}
+
+void DeleteConfirmation::draw(StudioContext &ctx) noexcept {
+	switch (m_stage) {
+		case Stage::Closed:
+			break;
+		case Stage::Opening:
+			ImGui::OpenPopup(title().c_str());
+			m_stage = Stage::Open;
+			m_open = true;
+		[[fallthrough]];
+		case Stage::Open:
+			drawWindow(ctx.tctx, m_open, [this] {
+				ImGui::Text("Are you sure you want to delete %s?", m_path.c_str());
+				if (ig::PopupControlsOkCancel(m_open) != ig::PopupResponse::None) {
+					deleteFile.emit(m_path);
+					close();
+				}
+			});
+			break;
+	}
+}
+
+}
diff --git a/src/olympic/studio/applib/src/deleteconfirmation.hpp b/src/olympic/studio/applib/src/deleteconfirmation.hpp
new file mode 100644
index 00000000..4a03dbc1
--- /dev/null
+++ b/src/olympic/studio/applib/src/deleteconfirmation.hpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#pragma once
+
+#include <ox/std/string.hpp>
+
+#include <studio/context.hpp>
+#include <studio/popup.hpp>
+
+namespace studio {
+
+class DeleteConfirmation final: public Popup {
+ 	private:
+		enum class Stage {
+			Closed,
+			Opening,
+			Open,
+		};
+		Stage m_stage = Stage::Closed;
+		bool m_open{};
+		ox::String m_path;
+		StudioContext &m_ctx;
+
+	public:
+		ox::Signal<ox::Error(ox::StringViewCR path)> deleteFile;
+
+		DeleteConfirmation(StudioContext &ctx) noexcept;
+
+		void openPath(ox::StringViewCR path) noexcept;
+
+		void open() noexcept override;
+
+		void close() noexcept override;
+
+		[[nodiscard]]
+		bool isOpen() const noexcept override;
+
+		void draw(StudioContext &ctx) noexcept override;
+
+};
+
+}
diff --git a/src/olympic/studio/applib/src/projectexplorer.cpp b/src/olympic/studio/applib/src/projectexplorer.cpp
index 0266cfca..464f6718 100644
--- a/src/olympic/studio/applib/src/projectexplorer.cpp
+++ b/src/olympic/studio/applib/src/projectexplorer.cpp
@@ -42,9 +42,7 @@ void ProjectExplorer::draw(StudioContext &ctx) noexcept {
 	ImGui::BeginChild("ProjectExplorer", ImVec2(300, viewport.y), true);
 	ImGui::SetNextItemOpen(true);
 	if (m_treeModel) {
-		if (m_treeModel->draw(ctx.tctx)) {
-			oxLogError(refreshProjectTreeModel());
-		}
+		m_treeModel->draw(ctx.tctx);
 	}
 	ImGui::EndChild();
 }
@@ -56,7 +54,7 @@ void ProjectExplorer::setModel(ox::UPtr<ProjectTreeModel> &&model) noexcept {
 ox::Error ProjectExplorer::refreshProjectTreeModel(ox::StringViewCR) noexcept {
 	OX_REQUIRE_M(model, buildProjectTreeModel(*this, "Project", "/", nullptr));
 	setModel(std::move(model));
-	return ox::Error(0);
+	return {};
 }
 
 }
diff --git a/src/olympic/studio/applib/src/projectexplorer.hpp b/src/olympic/studio/applib/src/projectexplorer.hpp
index 9e1981b6..8ef25761 100644
--- a/src/olympic/studio/applib/src/projectexplorer.hpp
+++ b/src/olympic/studio/applib/src/projectexplorer.hpp
@@ -21,6 +21,8 @@ class ProjectExplorer: public Widget {
 		// slots
 		ox::Signal<ox::Error(ox::StringViewCR)> fileChosen;
 		ox::Signal<ox::Error(ox::StringViewCR)> addItem;
+		ox::Signal<ox::Error(ox::StringViewCR)> addDir;
+		ox::Signal<ox::Error(ox::StringViewCR)> deleteItem;
 
 		explicit ProjectExplorer(turbine::Context &ctx) noexcept;
 
diff --git a/src/olympic/studio/applib/src/projecttreemodel.cpp b/src/olympic/studio/applib/src/projecttreemodel.cpp
index 73b60ac8..aab3604f 100644
--- a/src/olympic/studio/applib/src/projecttreemodel.cpp
+++ b/src/olympic/studio/applib/src/projecttreemodel.cpp
@@ -27,14 +27,13 @@ ProjectTreeModel::ProjectTreeModel(ProjectTreeModel &&other) noexcept:
 	m_children(std::move(other.m_children)) {
 }
 
-bool ProjectTreeModel::draw(turbine::Context &ctx) const noexcept {
-	bool updated = false;
+void ProjectTreeModel::draw(turbine::Context &ctx) const noexcept {
 	constexpr auto dirFlags = ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick;
 	if (!m_children.empty()) {
 		if (ImGui::TreeNodeEx(m_name.c_str(), dirFlags)) {
             drawDirContextMenu();
 			for (auto const&child : m_children) {
-				updated = child->draw(ctx) || updated;
+				child->draw(ctx);
 			}
 			ImGui::TreePop();
 		} else {
@@ -50,14 +49,13 @@ bool ProjectTreeModel::draw(turbine::Context &ctx) const noexcept {
 			}
 			if (ImGui::BeginPopupContextItem("FileMenu", ImGuiPopupFlags_MouseButtonRight)) {
 				if (ImGui::MenuItem("Delete")) {
-					updated = m_explorer.romFs()->remove(path).errCode == 0 || updated;
+					m_explorer.deleteItem.emit(path);
 				}
 				ImGui::EndPopup();
 			}
 			ImGui::TreePop();
 		}
 	}
-	return updated;
 }
 
 void ProjectTreeModel::setChildren(ox::Vector<ox::UPtr<ProjectTreeModel>> children) noexcept {
@@ -69,6 +67,9 @@ void ProjectTreeModel::drawDirContextMenu() const noexcept {
         if (ImGui::MenuItem("Add Item")) {
             m_explorer.addItem.emit(fullPath());
         }
+        if (ImGui::MenuItem("Add Directory")) {
+            m_explorer.addDir.emit(fullPath());
+        }
         ImGui::EndPopup();
     }
 }
diff --git a/src/olympic/studio/applib/src/projecttreemodel.hpp b/src/olympic/studio/applib/src/projecttreemodel.hpp
index f3ae3743..f8b1bee3 100644
--- a/src/olympic/studio/applib/src/projecttreemodel.hpp
+++ b/src/olympic/studio/applib/src/projecttreemodel.hpp
@@ -25,8 +25,7 @@ class ProjectTreeModel {
 
 		ProjectTreeModel(ProjectTreeModel &&other) noexcept;
 
-		[[nodiscard]]
-		bool draw(turbine::Context &ctx) const noexcept;
+		void draw(turbine::Context &ctx) const noexcept;
 
 		void setChildren(ox::Vector<ox::UPtr<ProjectTreeModel>> children) noexcept;
 
diff --git a/src/olympic/studio/applib/src/studioapp.cpp b/src/olympic/studio/applib/src/studioapp.cpp
index 40111f8a..6265f863 100644
--- a/src/olympic/studio/applib/src/studioapp.cpp
+++ b/src/olympic/studio/applib/src/studioapp.cpp
@@ -53,6 +53,7 @@ StudioUI::StudioUI(turbine::Context &ctx, ox::StringParam projectDataDir) noexce
 	turbine::setApplicationData(m_tctx, &m_sctx);
 	m_projectExplorer.fileChosen.connect(this, &StudioUI::openFile);
 	m_projectExplorer.addItem.connect(this, &StudioUI::addFile);
+	m_projectExplorer.deleteItem.connect(this, &StudioUI::deleteFile);
 	m_newProject.finished.connect(this, &StudioUI::createOpenProject);
 	m_newMenu.finished.connect(this, &StudioUI::openFile);
 	ImGui::GetIO().IniFilename = nullptr;
@@ -348,6 +349,11 @@ ox::Error StudioUI::addFile(ox::StringViewCR path) noexcept {
 	return {};
 }
 
+ox::Error StudioUI::deleteFile(ox::StringViewCR path) noexcept {
+	m_deleteConfirmation.openPath(path);
+	return {};
+}
+
 ox::Error StudioUI::createOpenProject(ox::StringViewCR path) noexcept {
 	std::error_code ec;
 	std::filesystem::create_directories(toStdStringView(path), ec);
@@ -362,8 +368,8 @@ ox::Error StudioUI::openProjectPath(ox::StringParam path) noexcept {
 	OX_RETURN_ERROR(
 			ox::make_unique_catch<Project>(keelCtx(m_tctx), std::move(path), m_projectDataDir)
 			        .moveTo(m_project));
-	auto const sctx = applicationData<StudioContext>(m_tctx);
-	sctx->project = m_project.get();
+	m_sctx.project = m_project.get();
+	m_deleteConfirmation.deleteFile.connect(m_sctx.project, &Project::deleteItem);
 	turbine::setWindowTitle(m_tctx, ox::sfmt("{} - {}", keelCtx(m_tctx).appName, m_project->projectPath()));
 	m_project->fileAdded.connect(&m_projectExplorer, &ProjectExplorer::refreshProjectTreeModel);
 	m_project->fileDeleted.connect(&m_projectExplorer, &ProjectExplorer::refreshProjectTreeModel);
diff --git a/src/olympic/studio/applib/src/studioapp.hpp b/src/olympic/studio/applib/src/studioapp.hpp
index 32c4e44a..c722c608 100644
--- a/src/olympic/studio/applib/src/studioapp.hpp
+++ b/src/olympic/studio/applib/src/studioapp.hpp
@@ -12,7 +12,9 @@
 #include <studio/module.hpp>
 #include <studio/project.hpp>
 #include <studio/task.hpp>
+
 #include "aboutpopup.hpp"
+#include "deleteconfirmation.hpp"
 #include "newmenu.hpp"
 #include "newproject.hpp"
 #include "projectexplorer.hpp"
@@ -38,12 +40,14 @@ class StudioUI: public ox::SignalHandler {
 		BaseEditor *m_activeEditor = nullptr;
 		BaseEditor *m_activeEditorUpdatePending = nullptr;
 		NewMenu m_newMenu;
+		DeleteConfirmation m_deleteConfirmation{m_sctx};
 		NewProject m_newProject;
 		AboutPopup m_aboutPopup;
-		ox::Array<Popup*, 3> const m_popups = {
+		ox::Array<Popup*, 4> const m_popups = {
 			&m_newMenu,
 			&m_newProject,
-			&m_aboutPopup
+			&m_aboutPopup,
+			&m_deleteConfirmation,
 		};
 		bool m_showProjectExplorer = true;
 
@@ -85,6 +89,8 @@ class StudioUI: public ox::SignalHandler {
 
 		ox::Error addFile(ox::StringViewCR path) noexcept;
 
+		ox::Error deleteFile(ox::StringViewCR path) noexcept;
+
 		ox::Error createOpenProject(ox::StringViewCR path) noexcept;
 
 		ox::Error openProjectPath(ox::StringParam path) noexcept;
diff --git a/src/olympic/studio/modlib/include/studio/project.hpp b/src/olympic/studio/modlib/include/studio/project.hpp
index dc13901c..8c8221b4 100644
--- a/src/olympic/studio/modlib/include/studio/project.hpp
+++ b/src/olympic/studio/modlib/include/studio/project.hpp
@@ -45,7 +45,7 @@ constexpr ox::StringView parentDir(ox::StringView path) noexcept {
 	return substr(path, 0, extStart);
 }
 
-class Project {
+class Project: public ox::SignalHandler {
 	private:
 		ox::SmallMap<ox::String, ox::Optional<ox::ClawFormat>> m_typeFmt;
 		keel::Context &m_ctx;
@@ -91,6 +91,8 @@ class Project {
 
 		ox::Result<ox::FileStat> stat(ox::StringViewCR path) const noexcept;
 
+		ox::Error deleteItem(ox::StringViewCR path) noexcept;
+
 		[[nodiscard]]
 		bool exists(ox::StringViewCR path) const noexcept;
 
diff --git a/src/olympic/studio/modlib/src/project.cpp b/src/olympic/studio/modlib/src/project.cpp
index 84acad60..2777483a 100644
--- a/src/olympic/studio/modlib/src/project.cpp
+++ b/src/olympic/studio/modlib/src/project.cpp
@@ -69,6 +69,14 @@ ox::Result<ox::FileStat> Project::stat(ox::StringViewCR path) const noexcept {
 	return m_fs.stat(path);
 }
 
+ox::Error Project::deleteItem(ox::StringViewCR path) noexcept {
+	auto const err = m_fs.remove(path);
+	if (!err) {
+		fileDeleted.emit(path);
+	}
+	return err;
+}
+
 bool Project::exists(ox::StringViewCR path) const noexcept {
 	return m_fs.stat(path).error == 0;
 }