38 changed files with 72 additions and 887 deletions
--- a/.gitea/workflows/build.yaml
+++ b/.gitea/workflows/build.yaml
@ -4,7 +4,7 @@ on: [push]

 jobs:
  build:
-    runs-on: olympic
+    runs-on: nostalgia
    steps:
      - name: Check out repository code
        uses: actions/checkout@v3
--- a/deps/buildcore/base.mk
+++ b/deps/buildcore/base.mk
@ -93,7 +93,7 @@ purge:
 	${BC_CMD_RM_RF} compile_commands.json
 .PHONY: test
 test: build
-	${BC_CMD_ENVRUN} ${BC_CMD_PY3} -m mypy ${BC_VAR_SCRIPTS}
+	${BC_CMD_ENVRUN} mypy ${BC_VAR_SCRIPTS}
 	${BC_CMD_CMAKE_BUILD} ${BC_VAR_BUILD_PATH} test
 .PHONY: test-verbose
 test-verbose: build
--- a/deps/ox/src/ox/fs/filesystem/filesystem.cpp
+++ b/deps/ox/src/ox/fs/filesystem/filesystem.cpp
@ -37,30 +37,6 @@ Error FileSystem::read(const FileAddress &addr, void *buffer, std::size_t size)
 	}
 }

-Result<Buffer> FileSystem::read(FileAddress const &addr, size_t const size) noexcept {
-	Result<Buffer> out;
-	out.value.resize(size);
-	switch (addr.type()) {
-		case FileAddressType::Inode:
-			OX_RETURN_ERROR(readFileInode(addr.getInode().value, out.value.data(), size));
-			break;
-		case FileAddressType::ConstPath:
-		case FileAddressType::Path:
-			OX_RETURN_ERROR(readFilePath(StringView{addr.getPath().value}, out.value.data(), size));
-			break;
-		default:
-			return ox::Error{1};
-	}
-	return out;
-}
-
-Result<Buffer> FileSystem::read(StringViewCR path, size_t const size) noexcept {
-	Result<Buffer> out;
-	out.value.resize(size);
-	OX_RETURN_ERROR(readFilePath(path, out.value.data(), size));
-	return out;
-}
-
 Result<Buffer> FileSystem::read(const FileAddress &addr) noexcept {
 	OX_REQUIRE(s, stat(addr));
 	Buffer buff(static_cast<std::size_t>(s.size));
@ -75,33 +51,18 @@ Result<Buffer> FileSystem::read(StringViewCR path) noexcept {
 	return buff;
 }

-Error FileSystem::read(
-		FileAddress const &addr,
-		std::size_t const readStart,
-		std::size_t const readSize,
-		void *buffer,
-		std::size_t *size) noexcept {
+Error FileSystem::read(const FileAddress &addr, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept {
 	switch (addr.type()) {
 		case FileAddressType::Inode:
-			return readFileInodeRange(addr.getInode().value, readStart, readSize, buffer, size);
+			return read(addr.getInode().value, readStart, readSize, buffer, size);
 		case FileAddressType::ConstPath:
 		case FileAddressType::Path:
-			return readFilePathRange(addr.getPath().value, readStart, readSize, buffer, size);
+			return ox::Error(2, "Unsupported for path lookups");
 		default:
 			return ox::Error(1);
 	}
 }

-Result<size_t> FileSystem::read(
-		StringViewCR path,
-		std::size_t const readStart,
-		std::size_t const readSize,
-		Span<char> buff) noexcept {
-	size_t szOut{buff.size()};
-	OX_RETURN_ERROR(readFilePathRange(path, readStart, readSize, buff.data(), &szOut));
-	return szOut;
-}
-
 Error FileSystem::write(const FileAddress &addr, const void *buffer, uint64_t size, FileType fileType) noexcept {
 	switch (addr.type()) {
 		case FileAddressType::Inode:
--- a/deps/ox/src/ox/fs/filesystem/filesystem.hpp
+++ b/deps/ox/src/ox/fs/filesystem/filesystem.hpp
@ -41,10 +41,6 @@ class FileSystem {

 		Error read(const FileAddress &addr, void *buffer, std::size_t size) noexcept;

-		Result<Buffer> read(FileAddress const &addr, size_t size) noexcept;
-
-		Result<Buffer> read(StringViewCR path, size_t size) noexcept;
-
 		Result<Buffer> read(const FileAddress &addr) noexcept;

 		Result<Buffer> read(StringViewCR path) noexcept;
@ -57,24 +53,7 @@ class FileSystem {
 			return readFileInode(inode, buffer, buffSize);
 		}

-		Error read(
-			FileAddress const &addr,
-			size_t readStart,
-			size_t readSize,
-			void *buffer,
-			size_t *size) noexcept;
-
-		/**
-		 *
-		 * @param path
-		 * @param readStart
-		 * @param readSize
-		 * @param buffer
-		 * @param size
-		 * @return error or number of bytes read
-		 */
-		Result<size_t> read(
-			StringViewCR path, size_t readStart, size_t readSize, ox::Span<char> buff) noexcept;
+		Error read(const FileAddress &addr, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept;

 		virtual Result<Vector<String>> ls(StringViewCR dir) const noexcept = 0;

@ -161,10 +140,7 @@ class FileSystem {

 		virtual Error readFileInode(uint64_t inode, void *buffer, std::size_t size) noexcept = 0;

-		virtual Error readFilePathRange(
-			StringViewCR path, size_t readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept = 0;
-
-		virtual Error readFileInodeRange(uint64_t inode, size_t readStart, size_t readSize, void *buffer, size_t *size) noexcept = 0;
+		virtual Error readFileInodeRange(uint64_t inode, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept = 0;

 		virtual Error removePath(StringViewCR path, bool recursive) noexcept = 0;

@ -235,9 +211,6 @@ class FileSystemTemplate: public MemFS {

 		Error readFileInodeRange(uint64_t inode, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept override;

-		Error readFilePathRange(
-			StringViewCR path, size_t readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept override;
-
 		Error removePath(StringViewCR path, bool recursive) noexcept override;

 		Result<const char*> directAccessInode(uint64_t) const noexcept override;
@ -385,13 +358,6 @@ Error FileSystemTemplate<FileStore, Directory>::readFileInodeRange(uint64_t inod
 	return m_fs.read(inode, readStart, readSize, reinterpret_cast<uint8_t*>(buffer), size);
 }

-template<typename FileStore, typename Directory>
-Error FileSystemTemplate<FileStore, Directory>::readFilePathRange(
-	StringViewCR path, size_t readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept {
-	OX_REQUIRE(s, stat(path));
-	return readFileInodeRange(s.inode, readStart, readSize, buffer, buffSize);
-}
-
 template<typename FileStore, typename Directory>
 Error FileSystemTemplate<FileStore, Directory>::removePath(StringViewCR path, bool recursive) noexcept {
 	OX_REQUIRE(fd, fileSystemData());
--- a/deps/ox/src/ox/fs/filesystem/passthroughfs.cpp
+++ b/deps/ox/src/ox/fs/filesystem/passthroughfs.cpp
@ -154,25 +154,6 @@ Error PassThroughFS::readFileInode(uint64_t, void*, std::size_t) noexcept {
 	return ox::Error(1, "readFileInode(uint64_t, void*, std::size_t) is not supported by PassThroughFS");
 }

-Error PassThroughFS::readFilePathRange(
-	StringViewCR path, size_t const readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept {
-	try {
-		std::ifstream file(m_path / stripSlash(path), std::ios::binary | std::ios::ate);
-		auto const size = static_cast<size_t>(file.tellg());
-		readSize = ox::min(readSize, size);
-		file.seekg(static_cast<off_t>(readStart), std::ios::beg);
-		if (readSize > *buffSize) {
-			oxTracef("ox.fs.PassThroughFS.read.error", "Read failed: Buffer too small: {}", path);
-			return ox::Error{1};
-		}
-		file.read(static_cast<char*>(buffer), static_cast<std::streamsize>(readSize));
-		return {};
-	} catch (std::fstream::failure const &f) {
-		oxTracef("ox.fs.PassThroughFS.read.error", "Read of {} failed: {}", path, f.what());
-		return ox::Error{2};
-	}
-}
-
 Error PassThroughFS::readFileInodeRange(uint64_t, std::size_t, std::size_t, void*, std::size_t*) noexcept {
 	// unsupported
 	return ox::Error(1, "read(uint64_t, std::size_t, std::size_t, void*, std::size_t*) is not supported by PassThroughFS");
--- a/deps/ox/src/ox/fs/filesystem/passthroughfs.hpp
+++ b/deps/ox/src/ox/fs/filesystem/passthroughfs.hpp
@ -71,9 +71,6 @@ class PassThroughFS: public FileSystem {

 		Error readFileInode(uint64_t inode, void *buffer, std::size_t size) noexcept override;

-		Error readFilePathRange(
-			StringViewCR path, size_t readStart, size_t readSize, void *buffer, size_t *buffSize) noexcept override;
-
 		Error readFileInodeRange(uint64_t inode, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept override;

 		Error removePath(StringViewCR path, bool recursive) noexcept override;
--- a/release-notes.md
+++ b/release-notes.md
@ -5,9 +5,7 @@
 * Add TileSheetV5. TileSheetV5 retains the bpp field for the sake of
  CompactTileSheet, but always store it pixel as 8 bpp for itself.
 * Add ability to move subsheets in the subsheet tree.
-* Add Flip X and Flip Y functionality to TileSheet Editor.
-* Add rotate functionality to TileSheet Editor.
-* Add draw line tool to TileSheet editor
+* Add Flip X and Flip Y button for TileSheet Editor.
 * Replace file picker combo boxes with a browse button and file picker, and
  support for dragging files from the project explorer.
 * Add ability to create directories.
@ -17,5 +15,3 @@
 * Fix Palette Editor to ignore keyboard input when popups are open.
 * Palette Editor move color mechanism now uses drag and drop.
 * Add ability to reorder Palette pages.
-* Add warning for closing a tab with unsaved changes.
-* Add ability to close a tab with Ctrl/Cmd-W
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/CMakeLists.txt
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/CMakeLists.txt
@ -9,6 +9,5 @@ target_sources(
 		inserttilescommand.cpp
 		palettechangecommand.cpp
 		rmsubsheetcommand.cpp
-		rotatecommand.cpp
 		updatesubsheetcommand.cpp
 )
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/commands.hpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/commands.hpp
@ -17,7 +17,6 @@ enum class CommandId {
 	DeleteTile,
 	FlipX,
 	FlipY,
-	Rotate,
 	InsertTile,
 	MoveSubSheet,
 	UpdateSubSheet,
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/drawcommand.cpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/drawcommand.cpp
@ -2,68 +2,15 @@
 * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
 */

-#include <cmath>
-
 #include "drawcommand.hpp"

 namespace nostalgia::gfx {

-constexpr void iterateLine(ox::Point const &a, ox::Point const &b, auto const &f) noexcept {
-	auto const rise = b.y - a.y;
-	auto const run = b.x - a.x;
-	auto const slope = static_cast<double>(rise) / static_cast<double>(run);
-	auto y = static_cast<double>(a.y);
-	auto const w = abs(run);
-	if (rise > 0) {
-		if (run > 0) {
-			auto constexpr xmod = 1;
-			for (int32_t i = 0; i < w; ++i) {
-				auto const climb = static_cast<int32_t>(ceil(y + slope - y));
-				f(a.x + i * xmod, static_cast<int32_t>(y), climb * xmod);
-				y += slope * xmod;
-			}
-		} else if (run < 0) {
-			auto constexpr xmod = -1;
-			for (int32_t i = 0; i < w; ++i) {
-				auto const climb = static_cast<int32_t>(floor(y + slope - y));
-				f(a.x + i * xmod, static_cast<int32_t>(y), climb * xmod);
-				y += slope * xmod;
-			}
-		} else {
-			f(a.x, a.y, rise);
-		}
-	} else if (rise < 0) {
-		if (run > 0) {
-			auto constexpr xmod = 1;
-			for (int32_t i = 0; i < w; ++i) {
-				auto const climb = static_cast<int32_t>(floor(y + slope - y));
-				f(a.x + i * xmod, static_cast<int32_t>(y), climb * xmod);
-				y += slope * xmod;
-			}
-		} else if (run < 0) {
-			auto constexpr xmod = -1;
-			for (int32_t i = 0; i < w; ++i) {
-				auto const climb = static_cast<int32_t>(ceil(y + slope - y));
-				f(a.x + i * xmod, static_cast<int32_t>(y), climb * xmod);
-				y += slope * xmod;
-			}
-		} else {
-			f(a.x, a.y, rise - 1);
-		}
-	} else {
-		auto const xmod = run > 0 ? 1 : -1;
-		for (int32_t i = 0; i < w; ++i) {
-			f(a.x + i * xmod, static_cast<int32_t>(y), 1);
-		}
-	}
-}
-
-
 DrawCommand::DrawCommand(
 		TileSheet &img,
 		TileSheet::SubSheetIdx subSheetIdx,
 		std::size_t idx,
-		int const palIdx) noexcept:
+		int palIdx) noexcept:
 		m_img(img),
 		m_subSheetIdx(std::move(subSheetIdx)),
 		m_palIdx(palIdx) {
@ -74,8 +21,8 @@ DrawCommand::DrawCommand(
 DrawCommand::DrawCommand(
 		TileSheet &img,
 		TileSheet::SubSheetIdx subSheetIdx,
-		ox::SpanView<std::size_t> const&idxList,
-		int const palIdx) noexcept:
+		ox::Vector<std::size_t> const&idxList,
+		int palIdx) noexcept:
 		m_img(img),
 		m_subSheetIdx(std::move(subSheetIdx)),
 		m_palIdx(palIdx) {
@ -85,12 +32,11 @@ DrawCommand::DrawCommand(
 	}
 }

-bool DrawCommand::append(std::size_t const idx) noexcept {
+bool DrawCommand::append(std::size_t idx) noexcept {
 	auto &subsheet = getSubSheet(m_img, m_subSheetIdx);
 	if (m_changes.back().value->idx != idx && getPixel(subsheet, idx) != m_palIdx) {
 		// duplicate entries are bad
-		auto existing = find_if(
-			m_changes.cbegin(), m_changes.cend(), [idx](auto const&c) {
+		auto existing = ox::find_if(m_changes.cbegin(), m_changes.cend(), [idx](auto const&c) {
 			return c.idx == idx;
 		});
 		if (existing == m_changes.cend()) {
@ -102,7 +48,7 @@ bool DrawCommand::append(std::size_t const idx) noexcept {
 	return false;
 }

-bool DrawCommand::append(ox::SpanView<std::size_t> const&idxList) noexcept {
+bool DrawCommand::append(ox::Vector<std::size_t> const&idxList) noexcept {
 	auto out = false;
 	for (auto idx : idxList) {
 		out = append(idx) || out;
@ -110,28 +56,6 @@ bool DrawCommand::append(ox::SpanView<std::size_t> const&idxList) noexcept {
 	return out;
 }

-void DrawCommand::lineUpdate(ox::Point a, ox::Point b) noexcept {
-	std::ignore = undo();
-	m_changes.clear();
-	auto &ss = getSubSheet(m_img, m_subSheetIdx);
-	if (a.x < b.x) { ++b.x; }
-	if (a.y < b.y) { ++b.y; }
-	if (a.x > b.x) { --b.x; }
-	iterateLine(a, b, [this, &ss](int32_t const x, int32_t const y, int32_t const h) {
-		int const mod = h < 0 ? -1 : 1;
-		auto const range = h * mod;
-		for (int32_t i{}; i < range; ++i) {
-			auto const idx = ptToIdx(x, y + i * mod, ss.columns * TileWidth);
-			if (idx < ss.pixels.size()) {
-				if (m_palIdx != getPixel(ss, idx)) {
-					m_changes.emplace_back(static_cast<uint32_t>(idx), getPixel(ss, idx));
-				}
-			}
-		}
-	});
-	std::ignore = redo();
-}
-
 ox::Error DrawCommand::redo() noexcept {
 	auto &subsheet = getSubSheet(m_img, m_subSheetIdx);
 	for (auto const&c : m_changes) {
@ -156,8 +80,4 @@ TileSheet::SubSheetIdx const&DrawCommand::subsheetIdx() const noexcept {
 	return m_subSheetIdx;
 }

-void DrawCommand::finish() noexcept {
-	setObsolete(m_changes.empty());
-}
-
 }
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/drawcommand.hpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/drawcommand.hpp
@ -33,14 +33,12 @@ class DrawCommand: public TileSheetCommand {
 		DrawCommand(
 				TileSheet &img,
 				TileSheet::SubSheetIdx subSheetIdx,
-				ox::SpanView<std::size_t> const&idxList,
+				ox::Vector<std::size_t> const&idxList,
 				int palIdx) noexcept;

 		bool append(std::size_t idx) noexcept;

-		bool append(ox::SpanView<std::size_t> const&idxList) noexcept;
-
-		void lineUpdate(ox::Point a, ox::Point b) noexcept;
+		bool append(ox::Vector<std::size_t> const&idxList) noexcept;

 		ox::Error redo() noexcept final;

@ -52,8 +50,6 @@ class DrawCommand: public TileSheetCommand {
 		[[nodiscard]]
 		TileSheet::SubSheetIdx const&subsheetIdx() const noexcept override;

-		void finish() noexcept;
-
 };

 }
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rmsubsheetcommand.cpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rmsubsheetcommand.cpp
@ -6,7 +6,7 @@

 namespace nostalgia::gfx {

-RmSubSheetCommand::RmSubSheetCommand(TileSheet &img, TileSheet::SubSheetIdx idx) noexcept:
+gfx::RmSubSheetCommand::RmSubSheetCommand(TileSheet &img, TileSheet::SubSheetIdx idx) noexcept:
 		m_img(img),
 		m_idx(std::move(idx)),
 		m_parentIdx(m_idx) {
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rotatecommand.cpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rotatecommand.cpp
@ -1,126 +0,0 @@
-/*
- * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
- */
-
-#include "rotatecommand.hpp"
-
-namespace nostalgia::gfx {
-
-static void rotateLeft(
-		TileSheet::SubSheet &ss,
-        ox::Point const &pt,
-        ox::Point const &pt1,
-        ox::Point const &pt2,
-        int const depth = 0) noexcept {
-	if (depth >= 4) {
-		return;
-	}
-	auto const dstPt = ox::Point{pt1.x + pt.y, pt2.y - pt.x};
-	auto const srcIdx = ptToIdx(pt + pt1, ss.columns);
-	auto const dstIdx = ptToIdx(dstPt, ss.columns);
-	auto const src = ss.pixels[srcIdx];
-	auto &dst = ss.pixels[dstIdx];
-	rotateLeft(ss, dstPt - pt1, pt1, pt2, depth + 1);
-	dst = src;
-}
-
-static void rotateLeft(TileSheet::SubSheet &ss, ox::Point const &pt1, ox::Point const &pt2) noexcept {
-	auto const w = pt2.x - pt1.x;
-	auto const h = pt2.y - pt1.y;
-	for (int x = 0; x <= w / 2; ++x) {
-		for (int y = 0; y <= h / 2; ++y) {
-			rotateLeft(ss, {x, y}, pt1, pt2);
-		}
-	}
-}
-
-static void rotateRight(
-        TileSheet::SubSheet &ss,
-        ox::Point const &pt,
-        ox::Point const &pt1,
-        ox::Point const &pt2,
-        int const depth = 0) noexcept {
-	if (depth >= 4) {
-		return;
-	}
-	auto const dstPt = ox::Point{pt2.x - pt.y, pt1.y + pt.x};
-	auto const srcIdx = ptToIdx(pt + pt1, ss.columns);
-	auto const dstIdx = ptToIdx(dstPt, ss.columns);
-	auto const src = ss.pixels[srcIdx];
-	auto &dst = ss.pixels[dstIdx];
-	rotateRight(ss, dstPt - pt1, pt1, pt2, depth + 1);
-	dst = src;
-}
-
-static void rotateRight(TileSheet::SubSheet &ss, ox::Point const &pt1, ox::Point const &pt2) noexcept {
-	auto const w = pt2.x - pt1.x;
-	auto const h = pt2.y - pt1.y;
-	for (int x = 0; x <= w / 2; ++x) {
-		for (int y = 0; y <= h / 2; ++y) {
-			rotateRight(ss, {x, y}, pt1, pt2);
-		}
-	}
-}
-
-
-RotateCommand::RotateCommand(
-	TileSheet &img,
-	TileSheet::SubSheetIdx idx,
-	Direction const dir) noexcept:
-		m_img(img),
-		m_idx(std::move(idx)),
-		m_pt2{[this] {
-            auto &ss = getSubSheet(m_img, m_idx);
-			return ox::Point{ss.columns * TileWidth - 1, ss.rows * TileHeight - 1};
-		}()},
-		m_dir{dir} {
-}
-
-RotateCommand::RotateCommand(
-    TileSheet &img,
-    TileSheet::SubSheetIdx idx,
-    ox::Point const &pt1,
-    ox::Point const &pt2,
-	Direction const dir) noexcept:
-		m_img(img),
-		m_idx(std::move(idx)),
-		m_pt1{pt1},
-		m_pt2{pt2},
-		m_dir{dir} {
-}
-
-ox::Error RotateCommand::redo() noexcept {
-	auto &ss = getSubSheet(m_img, m_idx);
-	switch (m_dir) {
-		case Direction::Left:
-			rotateLeft(ss, m_pt1, m_pt2);
-			break;
-		case Direction::Right:
-			rotateRight(ss, m_pt1, m_pt2);
-			break;
-	}
-	return {};
-}
-
-ox::Error RotateCommand::undo() noexcept {
-	auto &ss = getSubSheet(m_img, m_idx);
-	switch (m_dir) {
-		case Direction::Left:
-			rotateRight(ss, m_pt1, m_pt2);
-			break;
-		case Direction::Right:
-			rotateLeft(ss, m_pt1, m_pt2);
-			break;
-	}
-	return {};
-}
-
-int RotateCommand::commandId() const noexcept {
-	return static_cast<int>(CommandId::Rotate);
-}
-
-TileSheet::SubSheetIdx const&RotateCommand::subsheetIdx() const noexcept {
-	return m_idx;
-}
-
-}
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rotatecommand.hpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/commands/rotatecommand.hpp
@ -1,47 +0,0 @@
-/*
- * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
- */
-
-#pragma once
-
-#include "commands.hpp"
-
-namespace nostalgia::gfx {
-
-class RotateCommand: public TileSheetCommand {
-	public:
-		enum class Direction {
-			Right,
-			Left,
-		};
-
-	private:
-		TileSheet &m_img;
-		TileSheet::SubSheetIdx m_idx;
-		ox::Point const m_pt1;
-		ox::Point const m_pt2;
-		Direction const m_dir;
-
-	public:
-		RotateCommand(TileSheet &img, TileSheet::SubSheetIdx idx, Direction dir) noexcept;
-
-		RotateCommand(
-			TileSheet &img,
-			TileSheet::SubSheetIdx idx,
-			ox::Point const &pt1,
-			ox::Point const &pt2,
-			Direction dir) noexcept;
-
-		ox::Error redo() noexcept final;
-
-		ox::Error undo() noexcept final;
-
-		[[nodiscard]]
-		int commandId() const noexcept final;
-
-		[[nodiscard]]
-		TileSheet::SubSheetIdx const&subsheetIdx() const noexcept override;
-
-};
-
-}
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp
@ -152,12 +152,6 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key const key, bool const do
 			setCutEnabled(false);
 			setPasteEnabled(false);
 			m_model.clearSelection();
-		} else if (key == turbine::Key::Alpha_E) {
-			m_tool = TileSheetTool::Line;
-			setCopyEnabled(false);
-			setCutEnabled(false);
-			setPasteEnabled(false);
-			m_model.clearSelection();
 		} else if (key == turbine::Key::Alpha_S) {
 			m_tool = TileSheetTool::Select;
 			setCopyEnabled(true);
@ -220,7 +214,7 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 	ImGui::BeginChild("Controls", {s_palViewWidth - 8, paneSize.y}, true);
 	{
 		auto const controlsSize = ImGui::GetContentRegionAvail();
-		ImGui::BeginChild("ToolBox", {0, 32}, true);
+		ImGui::BeginChild("ToolBox", {168, 32}, true);
 		{
 			auto const btnSz = ImVec2{45, 14};
 			if (ImGui::Selectable("Select", m_tool == TileSheetTool::Select, 0, btnSz)) {
@ -236,34 +230,18 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 				m_tool = TileSheetTool::Fill;
 				m_model.clearSelection();
 			}
-			ImGui::SameLine();
-			if (ImGui::Selectable("Line", m_tool == TileSheetTool::Line, 0, btnSz)) {
-				m_tool = TileSheetTool::Line;
-				m_model.clearSelection();
-			}
-			//ImGui::SameLine();
-			//size_t i{};
-			//ig::ComboBox("##Operations", ox::Array<ox::CStringView, 1>{"Operations"}, i);
 		}
 		ImGui::EndChild();
-		ImGui::BeginChild("OperationsBox", {0, 35}, ImGuiWindowFlags_NoTitleBar);
+		ImGui::SameLine();
+		ImGui::BeginChild("OperationsBox", {0, 32}, true);
 		{
-			if (ImGui::BeginCombo("##Operations", "Operations", 0)) {
-				if (ImGui::Selectable("Flip X", false)) {
-					oxLogError(m_model.flipX());
-				}
-				if (ImGui::Selectable("Flip Y", false)) {
-					oxLogError(m_model.flipY());
-				}
-				ImGui::BeginDisabled(!m_model.rotateEligible());
-				if (ImGui::Selectable("Rotate Left", false)) {
-					oxLogError(m_model.rotateLeft());
-				}
-				if (ImGui::Selectable("Rotate Right", false)) {
-					oxLogError(m_model.rotateRight());
-				}
-				ImGui::EndDisabled();
-				ImGui::EndCombo();
+			auto constexpr btnSz = ImVec2{55, 16};
+			if (ig::PushButton("Flip X", btnSz)) {
+				oxLogError(m_model.flipX());
+			}
+			ImGui::SameLine();
+			if (ig::PushButton("Flip Y", btnSz)) {
+				oxLogError(m_model.flipY());
 			}
 		}
 		ImGui::EndChild();
@ -470,9 +448,6 @@ void TileSheetEditorImGui::drawTileSheet(ox::Vec2 const&fbSize) noexcept {
 				case TileSheetTool::Fill:
 					m_view.clickFill(fbSize, clickPos(winPos, mousePos));
 					break;
-				case TileSheetTool::Line:
-					m_view.clickLine(fbSize, clickPos(winPos, mousePos));
-					break;
 				case TileSheetTool::Select:
 					m_view.clickSelect(fbSize, clickPos(winPos, mousePos));
 					break;
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditormodel.cpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditormodel.cpp
@ -24,7 +24,6 @@
 #include "tilesheeteditormodel.hpp"

 #include "commands/movesubsheetcommand.hpp"
-#include "commands/rotatecommand.hpp"

 namespace nostalgia::gfx {

@ -141,15 +140,11 @@ size_t TileSheetEditorModel::palettePage() const noexcept {
 	return m_palettePage;
 }

-void TileSheetEditorModel::drawCommand(ox::Point const &pt, std::size_t const palIdx) noexcept {
-	if (m_lastDrawUpdatePt == pt) {
-		return;
-	}
+void TileSheetEditorModel::drawCommand(ox::Point const&pt, std::size_t const palIdx) noexcept {
 	auto const &activeSubSheet = getSubSheet(m_img, m_activeSubsSheetIdx);
 	if (pt.x >= activeSubSheet.columns * TileWidth || pt.y >= activeSubSheet.rows * TileHeight) {
 		return;
 	}
-	m_lastDrawUpdatePt = pt;
 	auto const idx = gfx::idx(activeSubSheet, pt);
 	if (m_ongoingDrawCommand) {
 		m_updated = m_updated || m_ongoingDrawCommand->append(idx);
@ -159,31 +154,8 @@ void TileSheetEditorModel::drawCommand(ox::Point const &pt, std::size_t const pa
 	}
 }

-void TileSheetEditorModel::drawLineCommand(ox::Point const &pt, std::size_t const palIdx) noexcept {
-	if (m_lastDrawUpdatePt == pt) {
-		return;
-	}
-	auto const &activeSubSheet = getSubSheet(m_img, m_activeSubsSheetIdx);
-	if (pt.x >= activeSubSheet.columns * TileWidth || pt.y >= activeSubSheet.rows * TileHeight) {
-		return;
-	}
-	m_lastDrawUpdatePt = pt;
-	auto const idx = gfx::idx(activeSubSheet, pt);
-	if (m_ongoingDrawCommand) {
-		m_ongoingDrawCommand->lineUpdate(m_lineStartPt, pt);
-		m_updated = true;
-	} else {
-		std::ignore = pushCommand(ox::make<DrawCommand>(
-			m_img, m_activeSubsSheetIdx, idx, static_cast<int>(palIdx)));
-		m_lineStartPt = pt;
-	}
-}
-
 void TileSheetEditorModel::endDrawCommand() noexcept {
-	if (m_ongoingDrawCommand) {
-		m_ongoingDrawCommand->finish();
-		m_ongoingDrawCommand = nullptr;
-	}
+	m_ongoingDrawCommand = nullptr;
 }

 void TileSheetEditorModel::addSubsheet(TileSheet::SubSheetIdx const&parentIdx) noexcept {
@ -241,28 +213,6 @@ void TileSheetEditorModel::fill(ox::Point const&pt, int const palIdx) noexcept {
 	}
 }

-ox::Error TileSheetEditorModel::rotateLeft() noexcept {
-	auto &ss = activeSubSheet();
-    ox::Point pt1, pt2{ss.columns * TileWidth - 1, ss.rows * TileHeight - 1};
-	if (m_selection) {
-		pt1 = m_selection->a;
-		pt2 = m_selection->b;
-	}
-	return pushCommand(ox::make<RotateCommand>(
-		m_img, m_activeSubsSheetIdx, pt1, pt2, RotateCommand::Direction::Left));
-}
-
-ox::Error TileSheetEditorModel::rotateRight() noexcept {
-	auto &ss = activeSubSheet();
-    ox::Point pt1, pt2{ss.columns * TileWidth - 1, ss.rows * TileHeight - 1};
-	if (m_selection) {
-		pt1 = m_selection->a;
-		pt2 = m_selection->b;
-	}
-	return pushCommand(ox::make<RotateCommand>(
-		m_img, m_activeSubsSheetIdx, pt1, pt2, RotateCommand::Direction::Right));
-}
-
 void TileSheetEditorModel::setSelection(studio::Selection const&sel) noexcept {
 	m_selection.emplace(sel);
 	m_updated = true;
@ -303,7 +253,6 @@ ox::Error TileSheetEditorModel::markUpdatedCmdId(studio::UndoCommand const*cmd)
 			m_pal = keel::AssetRef<Palette>{};
 		}
 		m_palettePage = ox::min<size_t>(pal().pages.size(), 0);
-		setPalPath();
 		paletteChanged.emit();
 	}
 	auto const tsCmd = dynamic_cast<TileSheetCommand const*>(cmd);
@ -355,16 +304,6 @@ ox::Error TileSheetEditorModel::flipY() noexcept {
 	return pushCommand(ox::make<FlipYCommand>(m_img, m_activeSubsSheetIdx, a, b));
 }

-bool TileSheetEditorModel::rotateEligible() const noexcept {
-	if (m_selection) {
-		auto const w = m_selection->b.x - m_selection->a.x;
-		auto const h = m_selection->b.y - m_selection->a.y;
-		return w == h;
-	}
-	auto const &ss = activeSubSheet();
-	return ss.rows == ss.columns;
-}
-
 ox::Error TileSheetEditorModel::moveSubSheet(TileSheet::SubSheetIdx src, TileSheet::SubSheetIdx dst) noexcept {
 	return pushCommand(ox::make<MoveSubSheetCommand>(m_img, std::move(src), std::move(dst)));
 }
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditormodel.hpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditormodel.hpp
@ -34,8 +34,6 @@ class TileSheetEditorModel: public ox::SignalHandler {
 		class DrawCommand *m_ongoingDrawCommand = nullptr;
 		studio::SelectionTracker m_selTracker;
 		ox::Optional<studio::Selection> m_selection;
-		ox::Point m_lineStartPt;
-		ox::Point m_lastDrawUpdatePt;
 		bool m_updated = false;

 	public:
@ -73,8 +71,6 @@ class TileSheetEditorModel: public ox::SignalHandler {

 		void drawCommand(ox::Point const&pt, std::size_t palIdx) noexcept;

-		void drawLineCommand(ox::Point const&pt, std::size_t palIdx) noexcept;
-
 		void endDrawCommand() noexcept;

 		void addSubsheet(TileSheet::SubSheetIdx const&parentIdx) noexcept;
@ -106,10 +102,6 @@ class TileSheetEditorModel: public ox::SignalHandler {

 		void fill(ox::Point const&pt, int palIdx) noexcept;

-		ox::Error rotateLeft() noexcept;
-
-		ox::Error rotateRight() noexcept;
-
 		void setSelection(studio::Selection const&sel) noexcept;

 		void select(ox::Point const&pt) noexcept;
@ -138,9 +130,6 @@ class TileSheetEditorModel: public ox::SignalHandler {

 		ox::Error flipY() noexcept;

-		[[nodiscard]]
-		bool rotateEligible() const noexcept;
-
 		ox::Error moveSubSheet(TileSheet::SubSheetIdx src, TileSheet::SubSheetIdx dst) noexcept;

 	private:
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditorview.cpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditorview.cpp
@ -11,8 +11,7 @@

 namespace nostalgia::gfx {

-TileSheetEditorView::TileSheetEditorView(
-		studio::StudioContext &sctx, ox::StringViewCR path, studio::UndoStack &undoStack):
+TileSheetEditorView::TileSheetEditorView(studio::StudioContext &sctx, ox::StringView path, studio::UndoStack &undoStack):
 	m_model(sctx, path, undoStack),
 	m_pixelsDrawer(m_model) {
 	glBindVertexArray(0);
@ -77,11 +76,6 @@ void TileSheetEditorView::clickDraw(ox::Vec2 const&paneSize, ox::Vec2 const&clic
 	m_model.drawCommand(pt, m_palIdx);
 }

-void TileSheetEditorView::clickLine(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept {
-	auto const pt = clickPoint(paneSize, clickPos);
-	m_model.drawLineCommand(pt, m_palIdx);
-}
-
 void TileSheetEditorView::clickSelect(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept {
 	auto const pt = clickPoint(paneSize, clickPos);
 	m_model.select(pt);
@ -96,7 +90,6 @@ void TileSheetEditorView::releaseMouseButton(TileSheetTool tool) noexcept {
 	switch (tool) {
 		case TileSheetTool::Draw:
 		case TileSheetTool::Fill:
-		case TileSheetTool::Line:
 			m_model.endDrawCommand();
 			break;
 		case TileSheetTool::Select:
--- a/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditorview.hpp
+++ b/src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditorview.hpp
@ -23,7 +23,6 @@ enum class TileSheetTool {
 	Select,
 	Draw,
 	Fill,
-	Line,
 };

 [[nodiscard]]
@ -35,8 +34,6 @@ constexpr auto toString(TileSheetTool t) noexcept {
 			return "Draw";
 		case TileSheetTool::Fill:
 			return "Fill";
-		case TileSheetTool::Line:
-			return "Line";
 		case TileSheetTool::None:
 			return "None";
 	}
@ -56,7 +53,7 @@ class TileSheetEditorView: public ox::SignalHandler {
 		std::size_t m_palIdx = 0;

 	public:
-		TileSheetEditorView(studio::StudioContext &sctx, ox::StringViewCR path, studio::UndoStack &undoStack);
+		TileSheetEditorView(studio::StudioContext &sctx, ox::StringView path, studio::UndoStack &undoStack);

 		~TileSheetEditorView() override = default;

@ -68,8 +65,6 @@ class TileSheetEditorView: public ox::SignalHandler {

 		void clickDraw(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;

-		void clickLine(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;
-
 		void clickSelect(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;

 		void clickFill(ox::Vec2 const&paneSize, ox::Vec2 const&clickPos) noexcept;
--- a/src/nostalgia/player/CMakeLists.txt
+++ b/src/nostalgia/player/CMakeLists.txt
@ -9,7 +9,6 @@ if(NOT WIN32)
 endif()

 if(COMMAND OBJCOPY_FILE)
-	set(LOAD_KEEL_MODS FALSE)
 	set_target_properties(Nostalgia
 		PROPERTIES
 			LINK_FLAGS ${LINKER_FLAGS}
@ -18,16 +17,8 @@ if(COMMAND OBJCOPY_FILE)

 	OBJCOPY_FILE(Nostalgia)
 	#PADBIN_FILE(Nostalgia)
-else()
-	set(LOAD_KEEL_MODS TRUE)
 endif()

-target_compile_definitions(
-	Nostalgia PRIVATE
-		OLYMPIC_LOAD_KEEL_MODULES=$<BOOL:${LOAD_KEEL_MODS}>
-		OLYMPIC_GUI_APP=1
-)
-
 target_link_libraries(
 	Nostalgia
 		NostalgiaKeelModules
--- a/src/nostalgia/studio/CMakeLists.txt
+++ b/src/nostalgia/studio/CMakeLists.txt
@ -33,7 +33,7 @@ endif()

 install(
 	FILES
-		ns_logo.icns
+		ns.icns
 	DESTINATION
 		${NOSTALGIA_DIST_RESOURCES}/icons
 )
--- a/src/nostalgia/studio/Info.plist
+++ b/src/nostalgia/studio/Info.plist
@ -9,7 +9,7 @@
 	<string>Nostalgia Studio</string>

 	<key>CFBundleIconFile</key>
-	<string>icons/ns_logo.icns</string>
+	<string>icons/ns.icns</string>

 	<key>CFBundleIdentifier</key>
 	<string>net.drinkingtea.nostalgia.studio</string>
@ -18,7 +18,7 @@
 	<string>APPL</string>

 	<key>CFBundleVersion</key>
-	<string>dev build</string>
+	<string>0.0.0</string>

 	<key>LSMinimumSystemVersion</key>
 	<string>12.0.0</string>
@ -30,6 +30,6 @@
 	<string>True</string>

 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright (c) 2016-2025 Gary Talent &lt;gary@drinkingtea.net&gt;</string>
+	<string>Copyright (c) 2016-2023 Gary Talent &lt;gary@drinkingtea.net&gt;</string>
 </dict>
 </plist>
--- a/src/nostalgia/studio/ns_logo.icns
+++ b/src/nostalgia/studio/ns_logo.icns
--- a/src/olympic/keel/include/keel/asset.hpp
+++ b/src/olympic/keel/include/keel/asset.hpp
@ -15,8 +15,6 @@ constexpr auto K1HdrSz = 40;

 ox::Result<ox::UUID> readUuidHeader(ox::BufferView buff) noexcept;

-ox::Result<ox::UUID> regenerateUuidHeader(ox::Buffer &buff) noexcept;
-
 ox::Error writeUuidHeader(ox::Writer_c auto &writer, ox::UUID const&uuid) noexcept {
 	OX_RETURN_ERROR(write(writer, "K1;"));
 	OX_RETURN_ERROR(uuid.toString(writer));
--- a/src/olympic/keel/src/asset.cpp
+++ b/src/olympic/keel/src/asset.cpp
@ -8,25 +8,15 @@ namespace keel {

 ox::Result<ox::UUID> readUuidHeader(ox::BufferView buff) noexcept {
 	if (buff.size() < K1HdrSz) [[unlikely]] {
-		return ox::Error{1, "Insufficient data to contain complete Keel header"};
+		return ox::Error(1, "Insufficient data to contain complete Keel header");
 	}
 	constexpr ox::StringView k1Hdr = "K1;";
-	if (k1Hdr != ox::StringView{buff.data(), k1Hdr.bytes()}) [[unlikely]] {
-		return ox::Error{2, "No Keel asset header data"};
+	if (k1Hdr != ox::StringView(buff.data(), k1Hdr.bytes())) [[unlikely]] {
+		return ox::Error(2, "No Keel asset header data");
 	}
 	return ox::UUID::fromString(ox::StringView(&buff[k1Hdr.bytes()], 36));
 }

-ox::Result<ox::UUID> regenerateUuidHeader(ox::Buffer &buff) noexcept {
-	OX_RETURN_ERROR(readUuidHeader(buff));
-	OX_REQUIRE(id, ox::UUID::generate());
-	auto const str = id.toString();
-	for (size_t i = 0; i < ox::UUIDStr::cap(); ++i) {
-		buff[i + 3] = str[i];
-	}
-	return id;
-}
-
 ox::Result<ox::ModelObject> readAsset(ox::TypeStore &ts, ox::BufferView buff) noexcept {
 	std::size_t offset = 0;
 	if (!readUuidHeader(buff).error) {
--- a/src/olympic/keel/src/media.cpp
+++ b/src/olympic/keel/src/media.cpp
@ -53,12 +53,10 @@ static ox::Error buildUuidMap(Context &ctx, ox::StringViewCR path) noexcept {
 		OX_REQUIRE_M(filePath, ox::join("/", ox::Array<ox::StringView, 2>{path, f}));
 		OX_REQUIRE(stat, ctx.rom->stat(filePath));
 		if (stat.fileType == ox::FileType::NormalFile) {
-			ox::Array<char, K1HdrSz> buff;
-			OX_RETURN_ERROR(
-				ctx.rom->read(filePath, 0, buff.size(), buff));
-			auto const [uuid, err] = readUuidHeader(buff);
+			OX_REQUIRE(data, ctx.rom->read(filePath));
+			auto const [hdr, err] = readAssetHeader(data);
 			if (!err) {
-				createUuidMapping(ctx, filePath, uuid);
+				createUuidMapping(ctx, filePath, hdr.uuid);
 			}
 		} else if (stat.fileType == ox::FileType::Directory) {
 			if (!beginsWith(f, ".")) {
--- a/src/olympic/studio/applib/src/CMakeLists.txt
+++ b/src/olympic/studio/applib/src/CMakeLists.txt
@ -5,7 +5,6 @@ add_library(
 		deleteconfirmation.cpp
 		filedialogmanager.cpp
 		main.cpp
-		makecopypopup.cpp
 		newdir.cpp
 		newmenu.cpp
 		newproject.cpp
--- a/src/olympic/studio/applib/src/makecopypopup.cpp
+++ b/src/olympic/studio/applib/src/makecopypopup.cpp
@ -1,81 +0,0 @@
-/*
- * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
- */
-
-#include "makecopypopup.hpp"
-
-namespace studio {
-
-ox::Error MakeCopyPopup::open(ox::StringViewCR path) noexcept {
-	m_stage = Stage::Opening;
-	OX_REQUIRE(idx, ox::findIdx(path.rbegin(), path.rend(), '/'));
-	m_srcPath = path;
-	m_dirPath = substr(path, 0, idx + 1);
-	m_title = sfmt("Copy {}", path);
-	m_fileName = "";
-	m_errMsg = "";
-	return {};
-}
-
-void MakeCopyPopup::close() noexcept {
-	m_stage = Stage::Closed;
-	m_open = false;
-}
-
-bool MakeCopyPopup::isOpen() const noexcept {
-	return m_open;
-}
-
-void MakeCopyPopup::draw(StudioContext const &ctx) noexcept {
-	switch (m_stage) {
-		case Stage::Closed:
-			break;
-		case Stage::Opening:
-			ImGui::OpenPopup(m_title.c_str());
-			m_stage = Stage::Open;
-			m_open = true;
-		[[fallthrough]];
-		case Stage::Open:
-			ig::centerNextWindow(ctx.tctx);
-			ImGui::SetNextWindowSize({250, 0});
-			constexpr auto modalFlags =
-				ImGuiWindowFlags_NoCollapse |
-				ImGuiWindowFlags_NoMove |
-				ImGuiWindowFlags_NoResize;
-			if (ImGui::BeginPopupModal(m_title.c_str(), &m_open, modalFlags)) {
-				if (ImGui::IsWindowAppearing()) {
-					ImGui::SetKeyboardFocusHere();
-				}
-				ig::InputText("Name", m_fileName);
-				if (ImGui::IsItemFocused() && ImGui::IsKeyPressed(ImGuiKey_Enter)) {
-					accept(ctx);
-				}
-				ImGui::Text("%s", m_errMsg.c_str());
-				bool open = true;
-				switch (ig::PopupControlsOkCancel(open)) {
-					case ig::PopupResponse::None:
-						break;
-					case ig::PopupResponse::OK:
-						accept(ctx);
-						break;
-					case ig::PopupResponse::Cancel:
-						close();
-						break;
-				}
-				ImGui::EndPopup();
-			}
-			break;
-	}
-}
-
-void MakeCopyPopup::accept(StudioContext const &ctx) noexcept {
-	auto const p = sfmt("{}{}", m_dirPath, m_fileName);
-	if (!ctx.project->exists(p)) {
-		makeCopy.emit(m_srcPath, p);
-		close();
-	} else {
-		m_errMsg = sfmt("{} already exists", p);
-	}
-}
-
-}
--- a/src/olympic/studio/applib/src/makecopypopup.hpp
+++ b/src/olympic/studio/applib/src/makecopypopup.hpp
@ -1,45 +0,0 @@
-/*
- * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
- */
-
-#pragma once
-
-#include <ox/std/string.hpp>
-
-#include <studio/context.hpp>
-#include <studio/imguiutil.hpp>
-
-namespace studio {
-
-class MakeCopyPopup {
- 	private:
-		enum class Stage {
-			Closed,
-			Opening,
-			Open,
-		};
-		Stage m_stage = Stage::Closed;
-		bool m_open{};
-		ox::String m_errMsg;
-		ox::String m_title{"Copy File"};
-		ox::String m_srcPath;
-		ox::String m_dirPath;
-		ox::IString<255> m_fileName;
-
-	public:
-		ox::Signal<ox::Error(ox::StringViewCR src, ox::StringViewCR dst)> makeCopy;
-
-		ox::Error open(ox::StringViewCR path) noexcept;
-
-		void close() noexcept;
-
-		[[nodiscard]]
-		bool isOpen() const noexcept;
-
-		void draw(StudioContext const &ctx) noexcept;
-
-	private:
-		void accept(StudioContext const &ctx) noexcept;
-};
-
-}
--- a/src/olympic/studio/applib/src/projectexplorer.cpp
+++ b/src/olympic/studio/applib/src/projectexplorer.cpp
@ -42,22 +42,19 @@ void ProjectExplorer::fileContextMenu(ox::StringViewCR path) const noexcept {
 		if (ImGui::MenuItem("Rename")) {
 			renameItem.emit(path);
 		}
-		if (ImGui::MenuItem("Make Copy")) {
-			makeCopy.emit(path);
-		}
 		ImGui::EndPopup();
 	}
 }

 void ProjectExplorer::dirContextMenu(ox::StringViewCR path) const noexcept {
-	if (ImGui::BeginPopupContextItem("DirMenu", ImGuiPopupFlags_MouseButtonRight)) {
+	if (path.len() && ImGui::BeginPopupContextItem("DirMenu", ImGuiPopupFlags_MouseButtonRight)) {
 		if (ImGui::MenuItem("Add Item")) {
 			addItem.emit(path);
 		}
 		if (ImGui::MenuItem("Add Directory")) {
 			addDir.emit(path);
 		}
-		if (path.len() && ImGui::MenuItem("Delete")) {
+		if (ImGui::MenuItem("Delete")) {
 			deleteItem.emit(path);
 		}
 		ImGui::EndPopup();
--- a/src/olympic/studio/applib/src/projectexplorer.hpp
+++ b/src/olympic/studio/applib/src/projectexplorer.hpp
@ -20,7 +20,6 @@ class ProjectExplorer final: public FileExplorer {
 		ox::Signal<ox::Error(ox::StringViewCR)> addDir;
 		ox::Signal<ox::Error(ox::StringViewCR)> deleteItem;
 		ox::Signal<ox::Error(ox::StringViewCR)> renameItem;
-		ox::Signal<ox::Error(ox::StringViewCR)> makeCopy;
 		ox::Signal<ox::Error(ox::StringViewCR src, ox::StringViewCR dst)> moveDir;
 		ox::Signal<ox::Error(ox::StringViewCR src, ox::StringViewCR dst)> moveItem;

--- a/src/olympic/studio/applib/src/studioapp.cpp
+++ b/src/olympic/studio/applib/src/studioapp.cpp
@ -59,13 +59,11 @@ StudioUI::StudioUI(turbine::Context &ctx, ox::StringParam projectDataDir) noexce
 	m_projectExplorer.addItem.connect(this, &StudioUI::addFile);
 	m_projectExplorer.deleteItem.connect(this, &StudioUI::deleteFile);
 	m_projectExplorer.renameItem.connect(this, &StudioUI::renameFile);
-	m_projectExplorer.makeCopy.connect(this, &StudioUI::makeCopyDlg);
 	m_projectExplorer.moveDir.connect(this, &StudioUI::queueDirMove);
 	m_projectExplorer.moveItem.connect(this, &StudioUI::queueFileMove);
 	m_renameFile.moveFile.connect(this, &StudioUI::queueFileMove);
 	m_newProject.finished.connect(this, &StudioUI::createOpenProject);
 	m_newMenu.finished.connect(this, &StudioUI::openFile);
-	m_closeFileConfirm.response.connect(this, &StudioUI::handleCloseFileResponse);
 	loadModules();
 	// open project and files
 	auto const [config, err] = studio::readConfig<StudioConfig>(keelCtx(m_tctx));
@ -136,8 +134,6 @@ void StudioUI::draw() noexcept {
 		for (auto const p : m_popups) {
 			p->draw(m_sctx);
 		}
-		m_closeFileConfirm.draw(m_sctx);
-		m_copyFilePopup.draw(m_sctx);
 	}
 	ImGui::End();
 	handleKeyInput();
@ -218,7 +214,7 @@ void StudioUI::drawTabs() noexcept {
 		auto open = true;
 		auto const unsavedChanges = e->unsavedChanges() ? ImGuiTabItemFlags_UnsavedDocument : 0;
 		auto const selected = m_activeEditorUpdatePending == e.get() ?  ImGuiTabItemFlags_SetSelected : 0;
-		auto const flags = unsavedChanges | selected | ImGuiTabItemFlags_NoAssumedClosure;
+		auto const flags = unsavedChanges | selected;
 		if (ImGui::BeginTabItem(e->itemDisplayName().c_str(), &open, flags)) {
 			if (m_activeEditor != e.get()) [[unlikely]] {
 				m_activeEditor = e.get();
@ -233,10 +229,7 @@ void StudioUI::drawTabs() noexcept {
 				if (m_activeEditorOnLastDraw != e.get()) [[unlikely]] {
 					m_activeEditor->onActivated();
 				}
-				if (m_closeActiveTab) [[unlikely]] {
-					ImGui::SetTabItemClosed(e->itemDisplayName().c_str());
-
-				} else if (open) [[likely]] {
+				if (open) [[likely]] {
 					e->draw(m_sctx);
 				}
 				m_activeEditorOnLastDraw = e.get();
@ -244,39 +237,21 @@ void StudioUI::drawTabs() noexcept {
 			ImGui::EndTabItem();
 		}
 		if (!open) {
-			if (e->unsavedChanges()) {
-				m_closeFileConfirm.open();
-			} else {
-				e->close();
-				if (m_activeEditor == (*it).get()) {
-					m_activeEditor = nullptr;
-				}
-				try {
-					OX_THROW_ERROR(m_editors.erase(it).moveTo(it));
-				} catch (ox::Exception const&ex) {
-					oxErrf("Editor tab deletion failed: {} ({}:{})\n", ex.what(), ex.src.file_name(), ex.src.line());
-				} catch (std::exception const&ex) {
-					oxErrf("Editor tab deletion failed: {}\n", ex.what());
-				}
+			e->close();
+			if (m_activeEditor == (*it).get()) {
+				m_activeEditor = nullptr;
+			}
+			try {
+				OX_THROW_ERROR(m_editors.erase(it).moveTo(it));
+			} catch (ox::Exception const&ex) {
+				oxErrf("Editor tab deletion failed: {} ({}:{})\n", ex.what(), ex.src.file_name(), ex.src.line());
+			} catch (std::exception const&ex) {
+				oxErrf("Editor tab deletion failed: {}\n", ex.what());
 			}
 		} else {
 			++it;
 		}
 	}
-	if (m_closeActiveTab) [[unlikely]] {
-		if (m_activeEditor) {
-			auto const idx = find_if(
-				m_editors.begin(), m_editors.end(),
-				[this](ox::UPtr<BaseEditor> const &e) {
-					return m_activeEditor == e.get();
-				});
-			if (idx != m_editors.end()) {
-				oxLogError(m_editors.erase(idx.offset()).error);
-			}
-			m_activeEditor = nullptr;
-		}
-		m_closeActiveTab = false;
-	}
 }

 void StudioUI::loadEditorMaker(EditorMaker const&editorMaker) noexcept {
@ -353,14 +328,6 @@ void StudioUI::handleKeyInput() noexcept {
 			if (m_activeEditor && m_activeEditor->pasteEnabled()) {
 				m_activeEditor->paste();
 			}
-		} else if (ImGui::IsKeyPressed(ImGuiKey_W)) {
-			if (m_activeEditor) {
-				if (m_activeEditor->unsavedChanges()) {
-					m_closeFileConfirm.open();
-				} else {
-					oxLogError(closeCurrentFile());
-				}
-			}
 		} else if (ImGui::IsKeyPressed(ImGuiKey_X)) {
 			if (m_activeEditor && m_activeEditor->cutEnabled()) {
 				m_activeEditor->cut();
@ -426,12 +393,13 @@ ox::Error StudioUI::handleMoveFile(ox::StringViewCR oldPath, ox::StringViewCR ne
 }

 ox::Error StudioUI::handleDeleteFile(ox::StringViewCR path) noexcept {
-	for (auto &e : m_editors) {
+	for (size_t i{}; auto &e : m_editors) {
 		if (path == e->itemPath()) {
+			oxLogError(m_editors.erase(i).error);
 			oxLogError(closeFile(path));
-			m_closeActiveTab = true;
 			break;
 		}
+		++i;
 	}
 	return m_projectExplorer.refreshProjectTreeModel();
 }
@ -453,7 +421,6 @@ ox::Error StudioUI::openProjectPath(ox::StringParam path) noexcept {
 	m_sctx.project = m_project.get();
 	turbine::setWindowTitle(m_tctx, ox::sfmt("{} - {}", keelCtx(m_tctx).appName, m_project->projectPath()));
 	m_deleteConfirmation.deleteFile.connect(m_sctx.project, &Project::deleteItem);
-	m_copyFilePopup.makeCopy.connect(m_sctx.project, &Project::copyItem);
 	m_newDirDialog.newDir.connect(m_sctx.project, &Project::mkdir);
 	m_project->dirAdded.connect(&m_projectExplorer, &ProjectExplorer::refreshProjectTreeModel);
 	m_project->fileAdded.connect(&m_projectExplorer, &ProjectExplorer::refreshProjectTreeModel);
@ -516,28 +483,6 @@ ox::Error StudioUI::openFileActiveTab(ox::StringViewCR path, bool const makeActi
 	return {};
 }

-ox::Error StudioUI::makeCopyDlg(ox::StringViewCR path) noexcept {
-	return m_copyFilePopup.open(path);
-}
-
-ox::Error StudioUI::handleCloseFileResponse(ig::PopupResponse const response) noexcept {
-	if (response == ig::PopupResponse::OK && m_activeEditor) {
-		return closeCurrentFile();
-	}
-	return {};
-}
-
-ox::Error StudioUI::closeCurrentFile() noexcept {
-	for (auto &e : m_editors) {
-		if (m_activeEditor == e.get()) {
-			oxLogError(closeFile(e->itemPath()));
-			m_closeActiveTab = true;
-			break;
-		}
-	}
-	return {};
-}
-
 ox::Error StudioUI::closeFile(ox::StringViewCR path) noexcept {
 	if (!m_openFiles.contains(path)) {
 		return {};
--- a/src/olympic/studio/applib/src/studioapp.hpp
+++ b/src/olympic/studio/applib/src/studioapp.hpp
@ -9,14 +9,12 @@
 #include <ox/std/string.hpp>

 #include <studio/editor.hpp>
-#include <studio/imguiutil.hpp>
 #include <studio/module.hpp>
 #include <studio/project.hpp>
 #include <studio/task.hpp>

 #include "aboutpopup.hpp"
 #include "deleteconfirmation.hpp"
-#include "makecopypopup.hpp"
 #include "newdir.hpp"
 #include "newmenu.hpp"
 #include "newproject.hpp"
@ -42,14 +40,11 @@ class StudioUI: public ox::SignalHandler {
 		BaseEditor *m_activeEditorOnLastDraw = nullptr;
 		BaseEditor *m_activeEditor = nullptr;
 		BaseEditor *m_activeEditorUpdatePending = nullptr;
-		bool m_closeActiveTab{};
 		ox::Vector<ox::Pair<ox::String>> m_queuedMoves;
 		ox::Vector<ox::Pair<ox::String>> m_queuedDirMoves;
 		NewMenu m_newMenu{keelCtx(m_tctx)};
 		DeleteConfirmation m_deleteConfirmation;
 		NewDir m_newDirDialog;
-		ig::QuestionPopup m_closeFileConfirm{"Close File?", "This file has unsaved changes. Close?"};
-		MakeCopyPopup m_copyFilePopup;
 		RenameFile m_renameFile;
 		NewProject m_newProject;
 		AboutPopup m_aboutPopup;
@ -119,12 +114,6 @@ class StudioUI: public ox::SignalHandler {

 		ox::Error openFileActiveTab(ox::StringViewCR path, bool makeActiveTab) noexcept;

-		ox::Error makeCopyDlg(ox::StringViewCR path) noexcept;
-
-		ox::Error handleCloseFileResponse(ig::PopupResponse response) noexcept;
-
-		ox::Error closeCurrentFile() noexcept;
-
 		ox::Error closeFile(ox::StringViewCR path) noexcept;

 		ox::Error queueDirMove(ox::StringParam src, ox::StringParam dst) noexcept;
--- a/src/olympic/studio/modlib/include/studio/imguiutil.hpp
+++ b/src/olympic/studio/modlib/include/studio/imguiutil.hpp
@ -225,18 +225,6 @@ PopupResponse PopupControlsOkCancel(
 [[nodiscard]]
 bool BeginPopup(turbine::Context &ctx, ox::CStringViewCR popupName, bool &show, ImVec2 const&sz = {285, 0});

-/**
- *
- * @param lbl
- * @param list
- * @param selectedIdx
- * @return true if new value selected, false otherwise
- */
-bool ComboBox(
-		ox::CStringView lbl,
-		ox::SpanView<ox::CStringView> list,
-		size_t &selectedIdx) noexcept;
-
 /**
 *
 * @param lbl
@ -303,34 +291,6 @@ class FilePicker {

 };

-class QuestionPopup {
- 	private:
-		enum class Stage {
-			Closed,
-			Opening,
-			Open,
-		};
-		Stage m_stage = Stage::Closed;
-		bool m_open{};
-		ox::String m_title;
-		ox::String m_question;
-
-	public:
-		ox::Signal<ox::Error(ig::PopupResponse)> response;
-
-		QuestionPopup(ox::StringParam title, ox::StringParam question) noexcept;
-
-		void open() noexcept;
-
-		void close() noexcept;
-
-		[[nodiscard]]
-		bool isOpen() const noexcept;
-
-		void draw(StudioContext &ctx, ImVec2 const &sz = {}) noexcept;
-
-};
-
 [[nodiscard]]
 bool mainWinHasFocus() noexcept;

--- a/src/olympic/studio/modlib/include/studio/project.hpp
+++ b/src/olympic/studio/modlib/include/studio/project.hpp
@ -92,8 +92,6 @@ class Project: public ox::SignalHandler {

 		ox::Result<ox::FileStat> stat(ox::StringViewCR path) const noexcept;

-		ox::Error copyItem(ox::StringViewCR src, ox::StringViewCR dest) noexcept;
-
 		ox::Error moveItem(ox::StringViewCR src, ox::StringViewCR dest) noexcept;

 		ox::Error moveDir(ox::StringViewCR src, ox::StringViewCR dest) noexcept;
--- a/src/olympic/studio/modlib/src/imguiutil.cpp
+++ b/src/olympic/studio/modlib/src/imguiutil.cpp
@ -90,25 +90,6 @@ bool BeginPopup(turbine::Context &ctx, ox::CStringViewCR popupName, bool &show,
 	return ImGui::BeginPopupModal(popupName.c_str(), &show, modalFlags);
 }

-bool ComboBox(
-		ox::CStringView lbl,
-		ox::SpanView<ox::CStringView> list,
-		size_t &selectedIdx) noexcept {
-	bool out{};
-	auto const first = selectedIdx < list.size() ? list[selectedIdx].c_str() : "";
-	if (ImGui::BeginCombo(lbl.c_str(), first, 0)) {
-		for (auto i = 0u; i < list.size(); ++i) {
-			const auto selected = (selectedIdx == i);
-			if (ImGui::Selectable(list[i].c_str(), selected) && selectedIdx != i) {
-				selectedIdx = i;
-				out = true;
-			}
-		}
-		ImGui::EndCombo();
-	}
-	return out;
-}
-
 bool ComboBox(
 		ox::CStringView lbl,
 		ox::Span<const ox::String> list,
@ -225,60 +206,6 @@ void FilePicker::show() noexcept {
 	m_show = true;
 }

-
-QuestionPopup::QuestionPopup(ox::StringParam title, ox::StringParam question) noexcept:
-	m_title{std::move(title)},
-	m_question{std::move(question)} {
-}
-
-void QuestionPopup::open() noexcept {
-	m_stage = Stage::Opening;
-}
-
-void QuestionPopup::close() noexcept {
-	m_stage = Stage::Closed;
-	m_open = false;
-}
-
-bool QuestionPopup::isOpen() const noexcept {
-	return m_open;
-}
-
-void QuestionPopup::draw(StudioContext &ctx, ImVec2 const &sz) noexcept {
-	switch (m_stage) {
-		case Stage::Closed:
-			break;
-		case Stage::Opening:
-			ImGui::OpenPopup(m_title.c_str());
-			m_stage = Stage::Open;
-			m_open = true;
-		[[fallthrough]];
-		case Stage::Open:
-			centerNextWindow(ctx.tctx);
-			ImGui::SetNextWindowSize(static_cast<ImVec2>(sz));
-			constexpr auto modalFlags = ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize;
-			if (ImGui::BeginPopupModal(m_title.c_str(), &m_open, modalFlags)) {
-				ImGui::Text("%s", m_question.c_str());
-				auto const r = PopupControlsOkCancel(m_open, "Yes", "No");
-				switch (r) {
-					case PopupResponse::None:
-						break;
-					case PopupResponse::OK:
-						response.emit(r);
-						close();
-						break;
-					case PopupResponse::Cancel:
-						response.emit(r);
-						close();
-						break;
-				}
-				ImGui::EndPopup();
-			}
-			break;
-	}
-}
-
-
 bool s_mainWinHasFocus{};
 bool mainWinHasFocus() noexcept {
 	return s_mainWinHasFocus;
--- a/src/olympic/studio/modlib/src/project.cpp
+++ b/src/olympic/studio/modlib/src/project.cpp
@ -97,14 +97,6 @@ ox::Result<ox::FileStat> Project::stat(ox::StringViewCR path) const noexcept {
 	return m_fs.stat(path);
 }

-ox::Error Project::copyItem(ox::StringViewCR src, ox::StringViewCR dest) noexcept {
-	OX_REQUIRE_M(buff, loadBuff(src));
-	OX_REQUIRE(id, keel::regenerateUuidHeader(buff));
-	OX_RETURN_ERROR(writeBuff(dest, buff));
-	createUuidMapping(m_kctx, dest, id);
-	return {};
-}
-
 ox::Error Project::moveItem(ox::StringViewCR src, ox::StringViewCR dest) noexcept {
 	OX_RETURN_ERROR(m_fs.move(src, dest));
 	OX_RETURN_ERROR(keel::updatePath(m_kctx, src, dest));
--- a/src/olympic/studio/modlib/src/undostack.cpp
+++ b/src/olympic/studio/modlib/src/undostack.cpp
@ -7,7 +7,9 @@
 namespace studio {

 ox::Error UndoStack::push(ox::UPtr<UndoCommand> &&cmd) noexcept {
-	m_stack.resize(m_stackIdx);
+	for (auto const i = m_stackIdx; i < m_stack.size();) {
+		std::ignore = m_stack.erase(i);
+	}
 	OX_RETURN_ERROR(cmd->redo());
 	redoTriggered.emit(cmd.get());
 	changeTriggered.emit(cmd.get());
@ -23,29 +25,22 @@ ox::Error UndoStack::push(ox::UPtr<UndoCommand> &&cmd) noexcept {
 }

 ox::Error UndoStack::redo() noexcept {
-	while (m_stackIdx < m_stack.size()) {
-		auto const &c = m_stack[m_stackIdx];
+	if (m_stackIdx < m_stack.size()) {
+		auto &c = m_stack[m_stackIdx];
+		OX_RETURN_ERROR(c->redo());
 		++m_stackIdx;
-		if (!c->isObsolete()) {
-			OX_RETURN_ERROR(c->redo());
-			redoTriggered.emit(c.get());
-			changeTriggered.emit(c.get());
-			break;
-		}
+		redoTriggered.emit(c.get());
+		changeTriggered.emit(c.get());
 	}
 	return {};
 }

 ox::Error UndoStack::undo() noexcept {
-	while (m_stackIdx) {
-		--m_stackIdx;
-		auto const &c = m_stack[m_stackIdx];
-		if (!c->isObsolete()) {
-			OX_RETURN_ERROR(c->undo());
-			undoTriggered.emit(c.get());
-			changeTriggered.emit(c.get());
-			break;
-		}
+	if (m_stackIdx) {
+		auto &c = m_stack[--m_stackIdx];
+		OX_RETURN_ERROR(c->undo());
+		undoTriggered.emit(c.get());
+		changeTriggered.emit(c.get());
 	}
 	return {};
 }