feat: fix heatmap false-heat on offset shift, hover flicker, type chooser cleanup

- Clear value history when node offsets change (insert/delete/resize/
  manual offset edit) so stale values from old addresses don't show
  false heat coloring
- Invalidate in-flight async reads (bump refreshGen) when tree layout
  changes, preventing stale snapshot data from re-introducing heat
- Fix command bar hover cursor flicker: remove premature
  applyHoverCursor() from applyDocument() — runs correctly via
  applySelectionOverlays() after text is finalized
- Fix hover indicator survival: reorder refresh() so text-modifying
  passes (updateCommandRow) run before overlay passes
- Guard synthetic Leave events during setText() to preserve hover state
- Remove primitives from type chooser when pointer modifier (* / **)
  is active; remove primitives entirely in Root command bar mode
- Add test_editor and test_controller test coverage for heat clearing,
  hover survival, and mixed hex/non-hex type scenarios

.github/workflows/build.yml

@@ -0,0 +1,191 @@
+name: Build
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: write
+
+jobs:
+  windows:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Qt6
+        uses: jurplel/install-qt-action@v4
+        with:
+          version: '6.8.1'
+          arch: 'win64_msvc2022_64'
+          cache: true
+          aqtversion: '==3.1.21'
+
+      - uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: x64
+
+      - name: Configure
+        run: cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
+
+      - name: Build
+        run: cmake --build build
+
+      - name: Test
+        run: ctest --test-dir build --output-on-failure --exclude-regex "test_editor|test_controller|test_windbg_provider|test_com_security"
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: Reclass-win64-qt6
+          path: |
+            build/Reclass.exe
+            build/ReclassMcpBridge.exe
+            build/Plugins/*.dll
+            build/*.dll
+            build/platforms/
+            build/styles/
+            build/imageformats/
+            build/iconengines/
+            build/themes/
+            build/examples/
+            build/screenshot.png
+
+      - name: Get date tag
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        id: date
+        shell: bash
+        run: echo "tag=$(date +'%d-%m-%Y')" >> "$GITHUB_OUTPUT"
+
+      - name: Package release zip
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        shell: bash
+        run: |
+          mkdir -p release
+          cp build/Reclass.exe release/
+          cp build/ReclassMcpBridge.exe release/
+          cp build/*.dll release/ 2>/dev/null || true
+          cp -r build/platforms release/ 2>/dev/null || true
+          cp -r build/styles release/ 2>/dev/null || true
+          cp -r build/imageformats release/ 2>/dev/null || true
+          cp -r build/iconengines release/ 2>/dev/null || true
+          mkdir -p release/Plugins
+          cp build/Plugins/*.dll release/Plugins/ 2>/dev/null || true
+          cp -r build/themes release/ 2>/dev/null || true
+          cp -r build/examples release/ 2>/dev/null || true
+          cp build/screenshot.png release/ 2>/dev/null || true
+          cd release && 7z a ../Reclass-win64-qt6.zip *
+
+      - name: Upload release asset
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: snapshot-${{ steps.date.outputs.tag }}
+          name: Snapshot ${{ steps.date.outputs.tag }}
+          body: |
+            Automated snapshot from main branch.
+            Commit: ${{ github.sha }}
+          prerelease: false
+          files: Reclass-win64-qt6.zip
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  linux:
+    needs: windows
+    runs-on: ubuntu-22.04
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Qt6
+        uses: jurplel/install-qt-action@v4
+        with:
+          version: '6.8.1'
+          cache: true
+          aqtversion: '==3.1.21'
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y ninja-build libgl1-mesa-dev libfuse2 libxcb-cursor0
+
+      - name: Configure
+        run: cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
+
+      - name: Build
+        run: cmake --build build
+
+      - name: Test
+        run: xvfb-run ctest --test-dir build --output-on-failure --exclude-regex "test_editor|test_controller"
+        env:
+          QT_QPA_PLATFORM: offscreen
+
+      - name: Create AppImage
+        run: |
+          # Download linuxdeploy and Qt plugin
+          wget -q https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
+          wget -q https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/continuous/linuxdeploy-plugin-qt-x86_64.AppImage
+          chmod +x linuxdeploy-x86_64.AppImage linuxdeploy-plugin-qt-x86_64.AppImage
+
+          # Build AppDir structure
+          mkdir -p AppDir/usr/bin AppDir/usr/share/icons/hicolor/256x256/apps
+          cp build/Reclass AppDir/usr/bin/
+          cp build/ReclassMcpBridge AppDir/usr/bin/
+          cp -r build/themes AppDir/usr/bin/ 2>/dev/null || true
+          cp -r build/examples AppDir/usr/bin/ 2>/dev/null || true
+          mkdir -p AppDir/usr/bin/Plugins
+          cp build/Plugins/*.so AppDir/usr/bin/Plugins/ 2>/dev/null || true
+          cp src/icons/class.png AppDir/usr/share/icons/hicolor/256x256/apps/reclass.png
+
+          # Create AppImage with Qt libs bundled
+          # install-qt-action adds Qt bin to PATH; find qmake there
+          QMAKE_BIN=$(which qmake 2>/dev/null || which qmake6 2>/dev/null || find "$RUNNER_WORKSPACE" -name qmake -path "*/bin/*" | head -1)
+          echo "Found qmake at: $QMAKE_BIN"
+          export QMAKE="$QMAKE_BIN"
+          QT_ROOT=$(dirname "$(dirname "$QMAKE_BIN")")
+          export LD_LIBRARY_PATH="$QT_ROOT/lib:$LD_LIBRARY_PATH"
+          export EXTRA_QT_PLUGINS="svg;iconengines"
+          ./linuxdeploy-x86_64.AppImage --appdir AppDir \
+            --desktop-file deploy/Reclass.desktop \
+            --icon-file AppDir/usr/share/icons/hicolor/256x256/apps/reclass.png \
+            --plugin qt \
+            --output appimage
+          # Rename to final name
+          ls Reclass-*.AppImage
+          mv Reclass-*.AppImage Reclass-linux64-qt6.AppImage
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: Reclass-linux64-qt6
+          path: Reclass-linux64-qt6.AppImage
+
+      - name: Get date tag
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        id: date
+        shell: bash
+        run: echo "tag=$(date +'%d-%m-%Y')" >> "$GITHUB_OUTPUT"
+
+      - name: Upload release asset
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: snapshot-${{ steps.date.outputs.tag }}
+          name: Snapshot ${{ steps.date.outputs.tag }}
+          body: |
+            Automated snapshot from main branch.
+            Commit: ${{ github.sha }}
+          prerelease: false
+          files: Reclass-linux64-qt6.AppImage
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+

CMakeLists.txt

@@ -59,7 +59,15 @@ add_executable(Reclass
     src/themes/thememanager.cpp
     src/themes/themeeditor.h
     src/themes/themeeditor.cpp
+    src/import_reclass_xml.h
+    src/import_reclass_xml.cpp
+    src/import_source.h
+    src/import_source.cpp
+    src/export_reclass_xml.h
+    src/export_reclass_xml.cpp
     src/mainwindow.h
+    src/optionsdialog.h
+    src/optionsdialog.cpp
     src/titlebar.h
     src/titlebar.cpp
     src/mcp/mcp_bridge.h
@@ -93,14 +101,24 @@ foreach(_tf ${_theme_files})
     configure_file(${_tf} "${CMAKE_BINARY_DIR}/themes/${_name}" COPYONLY)
 endforeach()
 
+# Copy example .rcx files to build directory
+file(GLOB _example_files "${CMAKE_SOURCE_DIR}/src/examples/*.rcx")
+file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/examples")
+foreach(_ef ${_example_files})
+    get_filename_component(_name ${_ef} NAME)
+    configure_file(${_ef} "${CMAKE_BINARY_DIR}/examples/${_name}" COPYONLY)
+endforeach()
+
 include(deploy)
 
-add_custom_target(screenshot ALL
-    COMMAND Reclass --screenshot ${CMAKE_BINARY_DIR}/screenshot.png
-    DEPENDS Reclass deploy
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-    COMMENT "Capturing UI screenshot with class open..."
-)
+if(TARGET deploy)
+    add_custom_target(screenshot ALL
+        COMMAND Reclass --screenshot ${CMAKE_BINARY_DIR}/screenshot.png
+        DEPENDS Reclass deploy
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+        COMMENT "Capturing UI screenshot with class open..."
+    )
+endif()
 
 set(_combine_script "${CMAKE_BINARY_DIR}/combine_sources.cmake")
 file(WRITE ${_combine_script} "
@@ -149,13 +167,6 @@ if(BUILD_TESTING)
     target_link_libraries(test_compose PRIVATE ${QT}::Core ${QT}::Test)
     add_test(NAME test_compose COMMAND test_compose)
 
-    add_executable(test_editor tests/test_editor.cpp src/editor.cpp src/compose.cpp src/format.cpp src/providerregistry.cpp
-        src/themes/theme.cpp src/themes/thememanager.cpp)
-    target_include_directories(test_editor PRIVATE src)
-    target_link_libraries(test_editor PRIVATE
-        ${QT}::Widgets ${QT}::PrintSupport ${QT}::Test
-        QScintilla::QScintilla)
-    add_test(NAME test_editor COMMAND test_editor)
 
     add_executable(test_provider tests/test_provider.cpp)
     target_include_directories(test_provider PRIVATE src)
@@ -215,6 +226,16 @@ if(BUILD_TESTING)
     endif()
     add_test(NAME test_context_menu COMMAND test_context_menu)
 
+    add_executable(test_editor tests/test_editor.cpp
+        src/editor.cpp src/compose.cpp src/format.cpp
+        src/providerregistry.cpp
+        src/themes/theme.cpp src/themes/thememanager.cpp)
+    target_include_directories(test_editor PRIVATE src)
+    target_link_libraries(test_editor PRIVATE
+        ${QT}::Widgets ${QT}::PrintSupport ${QT}::Test
+        QScintilla::QScintilla)
+    add_test(NAME test_editor COMMAND test_editor)
+
     add_executable(test_rendered_view tests/test_rendered_view.cpp
         src/generator.cpp src/compose.cpp src/format.cpp)
     target_include_directories(test_rendered_view PRIVATE src)
@@ -257,15 +278,38 @@ if(BUILD_TESTING)
     target_link_libraries(test_theme PRIVATE ${QT}::Widgets ${QT}::Test)
     add_test(NAME test_theme COMMAND test_theme)
 
-    add_executable(test_windbg_provider tests/test_windbg_provider.cpp
-        plugins/WinDbgMemory/WinDbgMemoryPlugin.cpp)
-    target_include_directories(test_windbg_provider PRIVATE src plugins/WinDbgMemory)
-    target_link_libraries(test_windbg_provider PRIVATE
-        ${QT}::Widgets ${QT}::Concurrent ${QT}::Test)
+    add_executable(test_options_dialog tests/test_options_dialog.cpp
+        src/optionsdialog.cpp src/themes/theme.cpp src/themes/thememanager.cpp)
+    target_include_directories(test_options_dialog PRIVATE src)
+    target_link_libraries(test_options_dialog PRIVATE ${QT}::Widgets ${QT}::Test)
+    add_test(NAME test_options_dialog COMMAND test_options_dialog)
+
+    add_executable(test_import_xml tests/test_import_xml.cpp
+        src/import_reclass_xml.cpp src/format.cpp src/compose.cpp)
+    target_include_directories(test_import_xml PRIVATE src)
+    target_link_libraries(test_import_xml PRIVATE ${QT}::Core ${QT}::Test)
+    add_test(NAME test_import_xml COMMAND test_import_xml)
+
+    add_executable(test_import_source tests/test_import_source.cpp
+        src/import_source.cpp src/format.cpp src/compose.cpp)
+    target_include_directories(test_import_source PRIVATE src)
+    target_link_libraries(test_import_source PRIVATE ${QT}::Core ${QT}::Test)
+    add_test(NAME test_import_source COMMAND test_import_source)
+
+    add_executable(test_export_xml tests/test_export_xml.cpp
+        src/export_reclass_xml.cpp src/import_reclass_xml.cpp src/format.cpp src/compose.cpp)
+    target_include_directories(test_export_xml PRIVATE src)
+    target_link_libraries(test_export_xml PRIVATE ${QT}::Core ${QT}::Test)
+    add_test(NAME test_export_xml COMMAND test_export_xml)
+
     if(WIN32)
-        target_link_libraries(test_windbg_provider PRIVATE dbgeng ole32)
+        add_executable(test_windbg_provider tests/test_windbg_provider.cpp
+            plugins/WinDbgMemory/WinDbgMemoryPlugin.cpp)
+        target_include_directories(test_windbg_provider PRIVATE src plugins/WinDbgMemory)
+        target_link_libraries(test_windbg_provider PRIVATE
+            ${QT}::Widgets ${QT}::Concurrent ${QT}::Test dbgeng ole32)
+        add_test(NAME test_windbg_provider COMMAND test_windbg_provider)
     endif()
-    add_test(NAME test_windbg_provider COMMAND test_windbg_provider)
 
     # Standalone test: proves whether CoInitializeSecurity is needed for DebugConnect
     # Requires a running WinDbg debug server on port 5055
@@ -288,5 +332,8 @@ if(BUILD_TESTING)
         )
     endif()
 endif()
-add_subdirectory(plugins/ProcessMemoryWindows)
-add_subdirectory(plugins/WinDbgMemory)
+add_subdirectory(plugins/ProcessMemory)
+if(WIN32)
+    add_subdirectory(plugins/WinDbgMemory)
+    add_subdirectory(plugins/RcNetPluginCompatLayer)
+endif()

README.md

@@ -15,10 +15,6 @@ This tool helps you inspect raw bytes and interpret them as types (structs, arra
     }
   }
   ```
-- Plugin system is partially implemented. Some UI bugs exist.
-- Vector/Matrix improvements have been made but are not entirely complete.
-- Every edit goes through a full undo/redo system.
-
 ## Build
 
  1. Prerequisites

deploy/Reclass.desktop

@@ -0,0 +1,8 @@
+[Desktop Entry]
+Type=Application
+Name=Reclass
+Comment=Memory structure reverse engineering tool
+Exec=Reclass
+Icon=reclass
+Categories=Development;Debugger;
+Terminal=false

plugins/ProcessMemory/CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.20)
-project(ProcessMemoryWindowsPlugin LANGUAGES CXX)
+project(ProcessMemoryPlugin LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
@@ -12,36 +12,36 @@ set(CMAKE_AUTOUIC ON)
 
 # Plugin sources
 set(PLUGIN_SOURCES
-    ProcessMemoryWindowsPlugin.h
-    ProcessMemoryWindowsPlugin.cpp
+    ProcessMemoryPlugin.h
+    ProcessMemoryPlugin.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.h
     ${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.ui
 )
 
 # Create shared library (DLL)
-add_library(ProcessMemoryWindowsPlugin SHARED ${PLUGIN_SOURCES})
+add_library(ProcessMemoryPlugin SHARED ${PLUGIN_SOURCES})
 
 # Link Qt
-target_link_libraries(ProcessMemoryWindowsPlugin PRIVATE ${QT}::Widgets ${_QT_WINEXTRAS})
+target_link_libraries(ProcessMemoryPlugin PRIVATE ${QT}::Widgets ${_QT_WINEXTRAS})
 
 # Platform-specific linking
 if(WIN32)
-    target_link_libraries(ProcessMemoryWindowsPlugin PRIVATE psapi shell32)
+    target_link_libraries(ProcessMemoryPlugin PRIVATE psapi shell32)
 endif()
 
 # On Linux, hide all symbols by default so only RCX_PLUGIN_EXPORT-marked ones are exported
 if(UNIX AND NOT APPLE)
-    target_compile_options(ProcessMemoryWindowsPlugin PRIVATE -fvisibility=hidden)
+    target_compile_options(ProcessMemoryPlugin PRIVATE -fvisibility=hidden)
 endif()
 
 # Include directories
-target_include_directories(ProcessMemoryWindowsPlugin PRIVATE
+target_include_directories(ProcessMemoryPlugin PRIVATE
     ${CMAKE_CURRENT_SOURCE_DIR}/../../src
 )
 
 # Output to Plugins folder
-set_target_properties(ProcessMemoryWindowsPlugin PROPERTIES
+set_target_properties(ProcessMemoryPlugin PROPERTIES
     LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/Plugins"
     RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/Plugins"
 )

plugins/ProcessMemory/ProcessMemoryPlugin.cpp

@@ -1,4 +1,4 @@
-#include "ProcessMemoryWindowsPlugin.h"
+#include "ProcessMemoryPlugin.h"
 
 #include "../../src/processpicker.h"
 
@@ -32,12 +32,12 @@
 #endif
 
 // ──────────────────────────────────────────────────────────────────────────
-// ProcessMemoryWindowsProvider implementation
+// ProcessMemoryProvider implementation
 // ──────────────────────────────────────────────────────────────────────────
 
 #ifdef _WIN32
 
-ProcessMemoryWindowsProvider::ProcessMemoryWindowsProvider(uint32_t pid, const QString& processName)
+ProcessMemoryProvider::ProcessMemoryProvider(uint32_t pid, const QString& processName)
     : m_handle(nullptr)
     , m_pid(pid)
     , m_processName(processName)
@@ -60,7 +60,7 @@ ProcessMemoryWindowsProvider::ProcessMemoryWindowsProvider(uint32_t pid, const Q
         cacheModules();
 }
 
-bool ProcessMemoryWindowsProvider::read(uint64_t addr, void* buf, int len) const
+bool ProcessMemoryProvider::read(uint64_t addr, void* buf, int len) const
 {
     if (!m_handle || len <= 0) return false;
 
@@ -71,7 +71,7 @@ bool ProcessMemoryWindowsProvider::read(uint64_t addr, void* buf, int len) const
     return bytesRead > 0;
 }
 
-bool ProcessMemoryWindowsProvider::write(uint64_t addr, const void* buf, int len)
+bool ProcessMemoryProvider::write(uint64_t addr, const void* buf, int len)
 {
     if (!m_handle || !m_writable || len <= 0) return false;
 
@@ -81,7 +81,7 @@ bool ProcessMemoryWindowsProvider::write(uint64_t addr, const void* buf, int len
     return false;
 }
 
-QString ProcessMemoryWindowsProvider::getSymbol(uint64_t addr) const
+QString ProcessMemoryProvider::getSymbol(uint64_t addr) const
 {
     for (const auto& mod : m_modules)
     {
@@ -96,7 +96,7 @@ QString ProcessMemoryWindowsProvider::getSymbol(uint64_t addr) const
     return {};
 }
 
-void ProcessMemoryWindowsProvider::cacheModules()
+void ProcessMemoryProvider::cacheModules()
 {
     HMODULE mods[1024];
     DWORD needed = 0;
@@ -126,7 +126,7 @@ void ProcessMemoryWindowsProvider::cacheModules()
 
 #elif defined(__linux__)
 
-ProcessMemoryWindowsProvider::ProcessMemoryWindowsProvider(uint32_t pid, const QString& processName)
+ProcessMemoryProvider::ProcessMemoryProvider(uint32_t pid, const QString& processName)
     : m_fd(-1)
     , m_pid(pid)
     , m_processName(processName)
@@ -152,7 +152,7 @@ ProcessMemoryWindowsProvider::ProcessMemoryWindowsProvider(uint32_t pid, const Q
 
 }
 
-bool ProcessMemoryWindowsProvider::read(uint64_t addr, void* buf, int len) const
+bool ProcessMemoryProvider::read(uint64_t addr, void* buf, int len) const
 {
     if (m_fd < 0 || len <= 0) return false;
 
@@ -176,7 +176,7 @@ bool ProcessMemoryWindowsProvider::read(uint64_t addr, void* buf, int len) const
     return nread == static_cast<ssize_t>(len);
 }
 
-bool ProcessMemoryWindowsProvider::write(uint64_t addr, const void* buf, int len)
+bool ProcessMemoryProvider::write(uint64_t addr, const void* buf, int len)
 {
     if (m_fd < 0 || !m_writable || len <= 0) return false;
 
@@ -200,7 +200,7 @@ bool ProcessMemoryWindowsProvider::write(uint64_t addr, const void* buf, int len
     return nwritten == static_cast<ssize_t>(len);
 }
 
-QString ProcessMemoryWindowsProvider::getSymbol(uint64_t addr) const
+QString ProcessMemoryProvider::getSymbol(uint64_t addr) const
 {
     for (const auto& mod : m_modules)
     {
@@ -215,7 +215,7 @@ QString ProcessMemoryWindowsProvider::getSymbol(uint64_t addr) const
     return {};
 }
 
-void ProcessMemoryWindowsProvider::cacheModules()
+void ProcessMemoryProvider::cacheModules()
 {
     // Parse /proc/<pid>/maps to discover loaded modules
     QString mapsPath = QStringLiteral("/proc/%1/maps").arg(m_pid);
@@ -288,7 +288,7 @@ void ProcessMemoryWindowsProvider::cacheModules()
 
 #endif // platform
 
-ProcessMemoryWindowsProvider::~ProcessMemoryWindowsProvider()
+ProcessMemoryProvider::~ProcessMemoryProvider()
 {
 #ifdef _WIN32
     if (m_handle)
@@ -299,7 +299,7 @@ ProcessMemoryWindowsProvider::~ProcessMemoryWindowsProvider()
 #endif
 }
 
-int ProcessMemoryWindowsProvider::size() const
+int ProcessMemoryProvider::size() const
 {
 #ifdef _WIN32
     return m_handle ? 0x10000 : 0;
@@ -309,22 +309,22 @@ int ProcessMemoryWindowsProvider::size() const
 }
 
 // ──────────────────────────────────────────────────────────────────────────
-// ProcessMemoryWindowsPlugin implementation
+// ProcessMemoryPlugin implementation
 // ──────────────────────────────────────────────────────────────────────────
 
-QIcon ProcessMemoryWindowsPlugin::Icon() const
+QIcon ProcessMemoryPlugin::Icon() const
 {
     return qApp->style()->standardIcon(QStyle::SP_ComputerIcon);
 }
 
-bool ProcessMemoryWindowsPlugin::canHandle(const QString& target) const
+bool ProcessMemoryPlugin::canHandle(const QString& target) const
 {
     // Target format: "pid:name" or just "pid"
     QRegularExpression re("^\\d+");
     return re.match(target).hasMatch();
 }
 
-std::unique_ptr<rcx::Provider> ProcessMemoryWindowsPlugin::createProvider(const QString& target, QString* errorMsg)
+std::unique_ptr<rcx::Provider> ProcessMemoryPlugin::createProvider(const QString& target, QString* errorMsg)
 {
     // Parse target: "pid:name" or just "pid"
     QStringList parts = target.split(':');
@@ -339,7 +339,7 @@ std::unique_ptr<rcx::Provider> ProcessMemoryWindowsPlugin::createProvider(const
 
     QString name = parts.size() > 1 ? parts[1] : QString("PID %1").arg(pid);
 
-    auto provider = std::make_unique<ProcessMemoryWindowsProvider>(pid, name);
+    auto provider = std::make_unique<ProcessMemoryProvider>(pid, name);
     if (!provider->isValid())
     {
         if (errorMsg)
@@ -352,7 +352,7 @@ std::unique_ptr<rcx::Provider> ProcessMemoryWindowsPlugin::createProvider(const
     return provider;
 }
 
-uint64_t ProcessMemoryWindowsPlugin::getInitialBaseAddress(const QString& target) const
+uint64_t ProcessMemoryPlugin::getInitialBaseAddress(const QString& target) const
 {
 #ifdef _WIN32
     // Parse PID from target
@@ -409,7 +409,7 @@ uint64_t ProcessMemoryWindowsPlugin::getInitialBaseAddress(const QString& target
 #endif
 }
 
-bool ProcessMemoryWindowsPlugin::selectTarget(QWidget* parent, QString* target)
+bool ProcessMemoryPlugin::selectTarget(QWidget* parent, QString* target)
 {
     // Use custom process enumeration from plugin
     QVector<PluginProcessInfo> pluginProcesses = enumerateProcesses();
@@ -440,7 +440,7 @@ bool ProcessMemoryWindowsPlugin::selectTarget(QWidget* parent, QString* target)
     return false;
 }
 
-QVector<PluginProcessInfo> ProcessMemoryWindowsPlugin::enumerateProcesses()
+QVector<PluginProcessInfo> ProcessMemoryPlugin::enumerateProcesses()
 {
     QVector<PluginProcessInfo> processes;
 
@@ -543,5 +543,5 @@ QVector<PluginProcessInfo> ProcessMemoryWindowsPlugin::enumerateProcesses()
 
 extern "C" RCX_PLUGIN_EXPORT IPlugin* CreatePlugin()
 {
-    return new ProcessMemoryWindowsPlugin();
+    return new ProcessMemoryPlugin();
 }

plugins/ProcessMemory/ProcessMemoryPlugin.h

@@ -5,14 +5,14 @@
 #include <cstdint>
 
 /**
- * Process memory provider (Windows)
- * Reads/writes memory from a live process using Windows platform APIs
+ * Process memory provider
+ * Reads/writes memory from a live process using platform APIs
  */
-class ProcessMemoryWindowsProvider : public rcx::Provider
+class ProcessMemoryProvider : public rcx::Provider
 {
 public:
-    ProcessMemoryWindowsProvider(uint32_t pid, const QString& processName);
-    ~ProcessMemoryWindowsProvider() override;
+    ProcessMemoryProvider(uint32_t pid, const QString& processName);
+    ~ProcessMemoryProvider() override;
 
     // Required overrides
     bool read(uint64_t addr, void* buf, int len) const override;
@@ -57,15 +57,15 @@ private:
 };
 
 /**
- * Plugin that provides ProcessMemoryWindowsProvider
+ * Plugin that provides ProcessMemoryProvider
  */
-class ProcessMemoryWindowsPlugin : public IProviderPlugin
+class ProcessMemoryPlugin : public IProviderPlugin
 {
 public:
-    std::string Name() const override { return "Process Memory Windows"; }
+    std::string Name() const override { return "Process Memory"; }
     std::string Version() const override { return "1.0.0"; }
     std::string Author() const override { return "Reclass"; }
-    std::string Description() const override { return "Read and write memory from local running processes (Windows)"; }
+    std::string Description() const override { return "Read and write memory from local running processes"; }
     k_ELoadType LoadType() const override { return k_ELoadTypeAuto; }
     QIcon Icon() const override;
 

plugins/RcNetPluginCompatLayer/CMakeLists.txt

@@ -0,0 +1,93 @@
+cmake_minimum_required(VERSION 3.20)
+project(RcNetCompatPlugin LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# Qt is found by the parent project; QT variable (Qt5 or Qt6) is inherited
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
+
+# Plugin sources
+set(PLUGIN_SOURCES
+    RcNetCompatPlugin.h
+    RcNetCompatPlugin.cpp
+    RcNetCompatProvider.h
+    RcNetCompatProvider.cpp
+    ReClassNET_Plugin.hpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.ui
+)
+
+# -- Optional .NET bridge -------------------------------------------------
+# When the .NET SDK is available, build the C# bridge assembly and enable
+# CLR hosting support in the C++ plugin.
+
+find_program(DOTNET_EXE dotnet)
+if(DOTNET_EXE)
+    # Check that 'dotnet build' actually works for net472
+    execute_process(
+        COMMAND ${DOTNET_EXE} --list-sdks
+        OUTPUT_VARIABLE _dotnet_sdks
+        ERROR_QUIET
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+    if(_dotnet_sdks)
+        set(HAS_CLR_BRIDGE ON)
+        message(STATUS "RcNetCompat: .NET SDK found -- building managed bridge")
+    endif()
+endif()
+
+if(HAS_CLR_BRIDGE)
+    list(APPEND PLUGIN_SOURCES
+        ClrHost.h
+        ClrHost.cpp
+    )
+
+    # Build the C# bridge assembly
+    set(_bridge_src "${CMAKE_CURRENT_SOURCE_DIR}/bridge")
+    set(_bridge_out "${CMAKE_BINARY_DIR}/Plugins/RcNetBridge.dll")
+
+    add_custom_command(
+        OUTPUT "${_bridge_out}"
+        COMMAND ${DOTNET_EXE} build
+            "${_bridge_src}/RcNetBridge.csproj"
+            -c Release
+            -o "${CMAKE_BINARY_DIR}/Plugins"
+            --nologo -v quiet
+        DEPENDS
+            "${_bridge_src}/RcNetBridge.cs"
+            "${_bridge_src}/RcNetBridge.csproj"
+        COMMENT "Building RcNetBridge.dll (.NET bridge)..."
+    )
+    add_custom_target(RcNetBridge ALL DEPENDS "${_bridge_out}")
+else()
+    message(STATUS "RcNetCompat: .NET SDK not found -- managed plugin support disabled")
+endif()
+
+# Create shared library (DLL)
+add_library(RcNetCompatPlugin SHARED ${PLUGIN_SOURCES})
+
+if(HAS_CLR_BRIDGE)
+    target_compile_definitions(RcNetCompatPlugin PRIVATE HAS_CLR_BRIDGE=1)
+    add_dependencies(RcNetCompatPlugin RcNetBridge)
+    # CLR hosting uses COM (ole32)
+    target_link_libraries(RcNetCompatPlugin PRIVATE ole32)
+endif()
+
+# Link Qt
+target_link_libraries(RcNetCompatPlugin PRIVATE ${QT}::Widgets ${_QT_WINEXTRAS})
+
+# Include directories
+target_include_directories(RcNetCompatPlugin PRIVATE
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src
+)
+
+# Output to Plugins folder
+set_target_properties(RcNetCompatPlugin PROPERTIES
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/Plugins"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/Plugins"
+)

plugins/RcNetPluginCompatLayer/ClrHost.cpp

@@ -0,0 +1,162 @@
+#include "ClrHost.h"
+
+#include <cwchar>
+
+// -- GUIDs ----------------------------------------------------------------
+
+using FnCLRCreateInstance = HRESULT(STDAPICALLTYPE*)(REFCLSID, REFIID, LPVOID*);
+
+// {9280188D-0E8E-4867-B30C-7FA83884E8DE}
+static const GUID sCLSID_CLRMetaHost =
+    {0x9280188d, 0x0e8e, 0x4867, {0xb3, 0x0c, 0x7f, 0xa8, 0x38, 0x84, 0xe8, 0xde}};
+
+// {D332DB9E-B9B3-4125-8207-A14884F53216}
+static const GUID sIID_ICLRMetaHost =
+    {0xD332DB9E, 0xB9B3, 0x4125, {0x82, 0x07, 0xA1, 0x48, 0x84, 0xF5, 0x32, 0x16}};
+
+// {BD39D1D2-BA2F-486A-89B0-B4B0CB466891}
+static const GUID sIID_ICLRRuntimeInfo =
+    {0xBD39D1D2, 0xBA2F, 0x486a, {0x89, 0xB0, 0xB4, 0xB0, 0xCB, 0x46, 0x68, 0x91}};
+
+// {90F1A06E-7712-4762-86B5-7A5EBA6BDB02}
+static const GUID sCLSID_CLRRuntimeHost =
+    {0x90F1A06E, 0x7712, 0x4762, {0x86, 0xB5, 0x7A, 0x5E, 0xBA, 0x6B, 0xDB, 0x02}};
+
+// {90F1A06C-7712-4762-86B5-7A5EBA6BDB02}
+static const GUID sIID_ICLRRuntimeHost =
+    {0x90F1A06C, 0x7712, 0x4762, {0x86, 0xB5, 0x7A, 0x5E, 0xBA, 0x6B, 0xDB, 0x02}};
+
+// -- ClrHost implementation -----------------------------------------------
+
+ClrHost::ClrHost()
+{
+    startClr();
+}
+
+ClrHost::~ClrHost()
+{
+    if (m_runtimeHost) m_runtimeHost->Release();
+    if (m_runtimeInfo) m_runtimeInfo->Release();
+    if (m_metaHost)    m_metaHost->Release();
+    if (m_mscoree)     FreeLibrary(m_mscoree);
+}
+
+bool ClrHost::startClr()
+{
+    m_mscoree = LoadLibraryW(L"mscoree.dll");
+    if (!m_mscoree)
+        return false;
+
+    auto fnCreate = reinterpret_cast<FnCLRCreateInstance>(
+        GetProcAddress(m_mscoree, "CLRCreateInstance"));
+    if (!fnCreate)
+        return false;
+
+    HRESULT hr = fnCreate(sCLSID_CLRMetaHost, sIID_ICLRMetaHost,
+                          reinterpret_cast<LPVOID*>(&m_metaHost));
+    if (FAILED(hr) || !m_metaHost)
+        return false;
+
+    hr = m_metaHost->GetRuntime(L"v4.0.30319", sIID_ICLRRuntimeInfo,
+                                reinterpret_cast<LPVOID*>(&m_runtimeInfo));
+    if (FAILED(hr) || !m_runtimeInfo)
+        return false;
+
+    hr = m_runtimeInfo->GetInterface(sCLSID_CLRRuntimeHost, sIID_ICLRRuntimeHost,
+                                     (LPVOID*)&m_runtimeHost);
+    if (FAILED(hr) || !m_runtimeHost)
+        return false;
+
+    hr = m_runtimeHost->Start();
+    if (FAILED(hr))
+        return false;
+
+    m_clrStarted = true;
+
+    return true;
+}
+
+bool ClrHost::loadManagedPlugin(const QString& bridgeDllPath,
+                                const QString& pluginPath,
+                                RcNetFunctions* outFunctions,
+                                QString* errorMsg)
+{
+    if (!m_runtimeHost || !m_clrStarted) {
+        if (errorMsg)
+            *errorMsg = QStringLiteral(
+                ".NET Framework 4.x is not available on this machine.\n"
+                "Install the .NET Framework 4.7.2+ runtime to load managed plugins.");
+        return false;
+    }
+
+
+    // Zero the function table -- the bridge will fill it
+    memset(outFunctions, 0, sizeof(RcNetFunctions));
+
+    // Build the argument string: "<hex_address_of_function_table>|<plugin_path>"
+    // Use %ls (not %s) for wide strings -- MinGW follows POSIX conventions.
+    wchar_t arg[2048];
+    swprintf(arg, sizeof(arg) / sizeof(wchar_t),
+             L"%llx|%ls",
+             reinterpret_cast<unsigned long long>(outFunctions),
+             reinterpret_cast<const wchar_t*>(pluginPath.utf16()));
+
+    DWORD retVal = 0;
+    HRESULT hr = m_runtimeHost->ExecuteInDefaultAppDomain(
+        reinterpret_cast<LPCWSTR>(bridgeDllPath.utf16()),
+        L"RcNetBridge.Bridge",
+        L"Initialize",
+        arg,
+        &retVal
+        );
+
+    if (FAILED(hr)) {
+        if (errorMsg)
+            *errorMsg = QStringLiteral(
+                "Failed to execute .NET bridge (HRESULT 0x%1).\n"
+                "Bridge: %2\n"
+                "Plugin: %3")
+                .arg(static_cast<uint>(hr), 8, 16, QChar('0'))
+                .arg(bridgeDllPath)
+                .arg(pluginPath);
+        return false;
+    }
+
+    if (retVal != 0) {
+        if (errorMsg) {
+            switch (retVal) {
+            case 1:
+                *errorMsg = QStringLiteral("Bridge: invalid argument format.");
+                break;
+            case 2:
+                *errorMsg = QStringLiteral(
+                    "No ICoreProcessFunctions implementation found in the .NET plugin.\n"
+                    "The DLL may not be a ReClass.NET plugin.");
+                break;
+            case 3:
+                *errorMsg = QStringLiteral(
+                    "Failed to load the .NET plugin assembly.\n"
+                    "Check that all its dependencies are available.");
+                break;
+            default:
+                *errorMsg = QStringLiteral("Bridge returned error code %1.").arg(retVal);
+                break;
+            }
+        }
+        return false;
+    }
+
+    // Verify the bridge wrote at least the minimum required function pointers
+    if (!outFunctions->ReadRemoteMemory ||
+        !outFunctions->OpenRemoteProcess ||
+        !outFunctions->EnumerateProcesses ||
+        !outFunctions->CloseRemoteProcess) {
+        if (errorMsg)
+            *errorMsg = QStringLiteral(
+                "The .NET bridge loaded but did not provide the required functions "
+                "(ReadRemoteMemory, OpenRemoteProcess, CloseRemoteProcess, EnumerateProcesses).");
+        return false;
+    }
+
+    return true;
+}

plugins/RcNetPluginCompatLayer/ClrHost.h

@@ -0,0 +1,99 @@
+#pragma once
+// In-process CLR hosting for loading .NET ReClass.NET plugins.
+// Dynamically loads mscoree.dll and uses ICLRMetaHost -> ICLRRuntimeInfo ->
+// ICLRRuntimeHost::ExecuteInDefaultAppDomain to call into the C# bridge.
+
+#include "ReClassNET_Plugin.hpp"
+#include <QString>
+#include <windows.h>
+#include <objbase.h>
+
+// -- Minimal COM interface definitions for CLR hosting --------------------
+// Defined here to avoid depending on Windows SDK metahost.h / mscoree.h
+// which may not be present in all MinGW distributions.
+// Only methods we actually call have real signatures; the rest are stubs
+// that preserve correct vtable offsets.
+
+#undef INTERFACE
+#define INTERFACE ICLRMetaHost
+DECLARE_INTERFACE_(ICLRMetaHost, IUnknown)
+{
+    // IUnknown
+    STDMETHOD(QueryInterface)(REFIID riid, void** ppv) PURE;
+    STDMETHOD_(ULONG, AddRef)() PURE;
+    STDMETHOD_(ULONG, Release)() PURE;
+    // ICLRMetaHost
+    STDMETHOD(GetRuntime)(LPCWSTR pwzVersion, REFIID riid, LPVOID* ppRuntime) PURE;
+    STDMETHOD(GetVersionFromFile)(LPCWSTR, LPWSTR, DWORD*) PURE;
+    STDMETHOD(EnumerateInstalledRuntimes)(void**) PURE;
+    STDMETHOD(EnumerateLoadedRuntimes)(HANDLE, void**) PURE;
+    STDMETHOD(RequestRuntimeLoadedNotification)(void*) PURE;
+    STDMETHOD(QueryLegacyV2RuntimeBinding)(REFIID, LPVOID*) PURE;
+    STDMETHOD_(void, ExitProcess)(INT32) PURE;
+};
+#undef INTERFACE
+
+#define INTERFACE ICLRRuntimeInfo
+DECLARE_INTERFACE_(ICLRRuntimeInfo, IUnknown)
+{
+    // IUnknown
+    STDMETHOD(QueryInterface)(REFIID riid, void** ppv) PURE;
+    STDMETHOD_(ULONG, AddRef)() PURE;
+    STDMETHOD_(ULONG, Release)() PURE;
+    // ICLRRuntimeInfo
+    STDMETHOD(GetVersionString)(LPWSTR, DWORD*) PURE;
+    STDMETHOD(GetRuntimeDirectory)(LPWSTR, DWORD*) PURE;
+    STDMETHOD(IsLoaded)(HANDLE, BOOL*) PURE;
+    STDMETHOD(LoadErrorString)(UINT, LPWSTR, DWORD*, LONG) PURE;
+    STDMETHOD(LoadLibrary)(LPCWSTR, HMODULE*) PURE;
+    STDMETHOD(GetProcAddress)(LPCSTR, LPVOID*) PURE;
+    STDMETHOD(GetInterface)(REFCLSID rclsid, REFIID riid, LPVOID* ppUnk) PURE;
+};
+#undef INTERFACE
+
+#define INTERFACE ICLRRuntimeHost
+DECLARE_INTERFACE_(ICLRRuntimeHost, IUnknown)
+{
+    // IUnknown
+    STDMETHOD(QueryInterface)(REFIID riid, void** ppv) PURE;
+    STDMETHOD_(ULONG, AddRef)() PURE;
+    STDMETHOD_(ULONG, Release)() PURE;
+    // ICLRRuntimeHost
+    STDMETHOD(Start)() PURE;
+    STDMETHOD(Stop)() PURE;
+    STDMETHOD(SetHostControl)(void*) PURE;
+    STDMETHOD(GetCLRControl)(void**) PURE;
+    STDMETHOD(UnloadAppDomain)(DWORD, BOOL) PURE;
+    STDMETHOD(ExecuteInAppDomain)(DWORD, void*, void*) PURE;
+    STDMETHOD(GetCurrentAppDomainId)(DWORD*) PURE;
+    STDMETHOD(ExecuteApplication)(LPCWSTR, DWORD, LPCWSTR*, DWORD, LPCWSTR*, int*) PURE;
+    STDMETHOD(ExecuteInDefaultAppDomain)(LPCWSTR, LPCWSTR, LPCWSTR, LPCWSTR, DWORD*) PURE;
+};
+#undef INTERFACE
+
+// -- CLR Host wrapper -----------------------------------------------------
+
+class ClrHost
+{
+public:
+    ClrHost();
+    ~ClrHost();
+
+    // True if the .NET Framework CLR (v4.0) is available on this machine.
+    bool isAvailable() const { return m_runtimeHost != nullptr && m_clrStarted; }
+
+    // Load a managed ReClass.NET plugin via the C# bridge.
+    bool loadManagedPlugin(const QString& bridgeDllPath,
+                           const QString& pluginPath,
+                           RcNetFunctions* outFunctions,
+                           QString* errorMsg = nullptr);
+
+private:
+    bool startClr();
+
+    HMODULE           m_mscoree         = nullptr;
+    ICLRMetaHost*     m_metaHost        = nullptr;
+    ICLRRuntimeInfo*  m_runtimeInfo     = nullptr;
+    ICLRRuntimeHost*  m_runtimeHost     = nullptr;
+    bool              m_clrStarted      = false;
+};

plugins/RcNetPluginCompatLayer/RcNetCompatPlugin.cpp

@@ -0,0 +1,333 @@
+#include "RcNetCompatPlugin.h"
+#include "RcNetCompatProvider.h"
+#include "../../src/processpicker.h"
+
+#include <QApplication>
+#include <QCoreApplication>
+#include <QDir>
+#include <QFileDialog>
+#include <QFileInfo>
+#include <QMessageBox>
+#include <QStyle>
+
+#include <windows.h>
+
+// -- Helpers --------------------------------------------------------------
+
+QIcon RcNetCompatPlugin::Icon() const
+{
+    return qApp->style()->standardIcon(QStyle::SP_TrashIcon);
+}
+
+// --.NET assembly detection ----------------------------------------------
+
+static bool isDotNetAssembly(const QString& path)
+{
+    // A .NET assembly has a non-zero CLR header directory entry in the PE
+    // optional header.  We check this by loading the PE without running
+    // DllMain and inspecting the IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR.
+    HMODULE hMod = GetModuleHandleW(reinterpret_cast<LPCWSTR>(path.utf16()));
+    if (!hMod)
+        hMod = LoadLibraryExW(reinterpret_cast<LPCWSTR>(path.utf16()),
+                              nullptr, DONT_RESOLVE_DLL_REFERENCES);
+    if (!hMod) return false;
+
+    auto* dos = reinterpret_cast<const IMAGE_DOS_HEADER*>(hMod);
+    if (dos->e_magic != IMAGE_DOS_SIGNATURE) return false;
+
+    auto* nt = reinterpret_cast<const IMAGE_NT_HEADERS*>(
+        reinterpret_cast<const char*>(hMod) + dos->e_lfanew);
+    if (nt->Signature != IMAGE_NT_SIGNATURE) return false;
+
+    constexpr DWORD kClrIndex = IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR; // 14
+    DWORD rva = 0, dirSize = 0;
+
+    if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
+        auto* opt = reinterpret_cast<const IMAGE_OPTIONAL_HEADER64*>(&nt->OptionalHeader);
+        if (opt->NumberOfRvaAndSizes > kClrIndex) {
+            rva     = opt->DataDirectory[kClrIndex].VirtualAddress;
+            dirSize = opt->DataDirectory[kClrIndex].Size;
+        }
+    } else {
+        auto* opt = reinterpret_cast<const IMAGE_OPTIONAL_HEADER32*>(&nt->OptionalHeader);
+        if (opt->NumberOfRvaAndSizes > kClrIndex) {
+            rva     = opt->DataDirectory[kClrIndex].VirtualAddress;
+            dirSize = opt->DataDirectory[kClrIndex].Size;
+        }
+    }
+
+    return rva != 0 && dirSize != 0;
+}
+
+// --Unified loader (dispatches native vs managed) ------------------------
+
+bool RcNetCompatPlugin::loadPlugin(const QString& path, QString* errorMsg)
+{
+    if (m_dllPath == path && (m_lib || m_isManaged))
+        return true; // Already loaded
+
+    if (isDotNetAssembly(path)) {
+#ifdef HAS_CLR_BRIDGE
+        return loadManagedDll(path, errorMsg);
+#else
+        if (errorMsg)
+            *errorMsg = QStringLiteral(
+                "This is a .NET assembly.\n\n"
+                "This build does not include .NET bridge support.\n"
+                "Rebuild with the .NET SDK installed to enable managed plugin loading.");
+        return false;
+#endif
+    }
+    return loadNativeDll(path, errorMsg);
+}
+
+// --Native DLL loading ---------------------------------------------------
+
+bool RcNetCompatPlugin::loadNativeDll(const QString& path, QString* errorMsg)
+{
+    unloadNativeDll();
+
+    m_lib = std::make_unique<QLibrary>(path);
+    if (!m_lib->load()) {
+        if (errorMsg)
+            *errorMsg = QStringLiteral("Failed to load DLL: %1").arg(m_lib->errorString());
+        m_lib.reset();
+        return false;
+    }
+
+    // Resolve all function pointers
+    m_fns.EnumerateProcesses =
+        reinterpret_cast<FnEnumerateProcesses>(m_lib->resolve("EnumerateProcesses"));
+    m_fns.OpenRemoteProcess =
+        reinterpret_cast<FnOpenRemoteProcess>(m_lib->resolve("OpenRemoteProcess"));
+    m_fns.IsProcessValid =
+        reinterpret_cast<FnIsProcessValid>(m_lib->resolve("IsProcessValid"));
+    m_fns.CloseRemoteProcess =
+        reinterpret_cast<FnCloseRemoteProcess>(m_lib->resolve("CloseRemoteProcess"));
+    m_fns.ReadRemoteMemory =
+        reinterpret_cast<FnReadRemoteMemory>(m_lib->resolve("ReadRemoteMemory"));
+    m_fns.WriteRemoteMemory =
+        reinterpret_cast<FnWriteRemoteMemory>(m_lib->resolve("WriteRemoteMemory"));
+    m_fns.EnumerateRemoteSectionsAndModules =
+        reinterpret_cast<FnEnumerateRemoteSectionsAndModules>(
+            m_lib->resolve("EnumerateRemoteSectionsAndModules"));
+    m_fns.ControlRemoteProcess =
+        reinterpret_cast<FnControlRemoteProcess>(m_lib->resolve("ControlRemoteProcess"));
+
+    // At minimum we need read + open + close
+    if (!m_fns.ReadRemoteMemory || !m_fns.OpenRemoteProcess || !m_fns.CloseRemoteProcess || !m_fns.EnumerateProcesses) {
+        if (errorMsg)
+            *errorMsg = QStringLiteral(
+                "DLL is missing required exports (ReadRemoteMemory, OpenRemoteProcess, "
+                "CloseRemoteProcess, EnumerateProcesses). Is this a ReClass.NET native plugin?");
+        m_lib->unload();
+        m_lib.reset();
+        m_fns = {};
+        return false;
+    }
+
+    m_dllPath  = path;
+    m_isManaged = false;
+    return true;
+}
+
+void RcNetCompatPlugin::unloadNativeDll()
+{
+    if (m_lib) {
+        m_lib->unload();
+        m_lib.reset();
+    }
+    m_fns = {};
+    m_dllPath.clear();
+    m_isManaged = false;
+}
+
+// --Managed (.NET) DLL loading via CLR bridge ----------------------------
+
+#ifdef HAS_CLR_BRIDGE
+
+bool RcNetCompatPlugin::loadManagedDll(const QString& path, QString* errorMsg)
+{
+    unloadNativeDll();
+
+    // Lazily create the CLR host (one per plugin lifetime)
+    if (!m_clrHost)
+        m_clrHost = std::make_unique<ClrHost>();
+
+    if (!m_clrHost->isAvailable()) {
+        if (errorMsg)
+            *errorMsg = QStringLiteral(
+                ".NET Framework 4.x is not available on this machine.\n"
+                "Install the .NET Framework 4.7.2+ runtime to load managed plugins.");
+        return false;
+    }
+
+    // Locate RcNetBridge.dll next to our own plugin DLL
+    // Use native separators -- the CLR expects Windows-style backslash paths.
+    QString bridgePath = QDir::toNativeSeparators(
+        QCoreApplication::applicationDirPath()
+        + QStringLiteral("/Plugins/RcNetBridge.dll"));
+
+    if (!QFileInfo::exists(bridgePath)) {
+        if (errorMsg)
+            *errorMsg = QStringLiteral(
+                "RcNetBridge.dll not found in the Plugins folder.\n"
+                "Expected at: %1").arg(bridgePath);
+        return false;
+    }
+
+    m_fns = {};
+    QString nativePath = QDir::toNativeSeparators(path);
+    if (!m_clrHost->loadManagedPlugin(bridgePath, nativePath, &m_fns, errorMsg))
+        return false;
+
+    m_dllPath  = path;
+    m_isManaged = true;
+    return true;
+}
+
+#endif // HAS_CLR_BRIDGE
+
+// --IProviderPlugin ------------------------------------------------------
+
+bool RcNetCompatPlugin::canHandle(const QString& target) const
+{
+    // Target format: "dllpath|pid:name"
+    return target.contains('|');
+}
+
+std::unique_ptr<rcx::Provider> RcNetCompatPlugin::createProvider(
+    const QString& target, QString* errorMsg)
+{
+    // Parse "dllpath|pid:name"
+    int sep = target.indexOf('|');
+    if (sep < 0) {
+        if (errorMsg) *errorMsg = QStringLiteral("Invalid target format");
+        return nullptr;
+    }
+
+    QString dllPath = target.left(sep);
+    QString pidPart = target.mid(sep + 1);
+
+    // Load (or reuse) the plugin DLL
+    if (!loadPlugin(dllPath, errorMsg))
+        return nullptr;
+
+    // Parse pid:name
+    QStringList parts = pidPart.split(':');
+    bool ok = false;
+    uint32_t pid = parts[0].toUInt(&ok);
+    if (!ok || pid == 0) {
+        if (errorMsg) *errorMsg = QStringLiteral("Invalid PID: %1").arg(parts[0]);
+        return nullptr;
+    }
+    QString procName = parts.size() > 1 ? parts[1] : QStringLiteral("PID %1").arg(pid);
+
+    auto provider = std::make_unique<RcNetCompatProvider>(m_fns, pid, procName);
+    if (!provider->isValid()) {
+        if (errorMsg)
+            *errorMsg = QStringLiteral(
+                "Failed to open process %1 (PID: %2) via ReClass.NET plugin.\n"
+                "Ensure the process is running and the plugin supports it.")
+                .arg(procName).arg(pid);
+        return nullptr;
+    }
+
+    return provider;
+}
+
+uint64_t RcNetCompatPlugin::getInitialBaseAddress(const QString& target) const
+{
+    Q_UNUSED(target);
+    // The provider sets its own base from module enumeration.
+    return 0;
+}
+
+bool RcNetCompatPlugin::selectTarget(QWidget* parent, QString* target)
+{
+    // Step 1: Pick a ReClass.NET plugin DLL (native or .NET)
+    QString dllPath = QFileDialog::getOpenFileName(
+        parent,
+        QStringLiteral("Select ReClass.NET Plugin"),
+        QString(),
+        QStringLiteral("DLL Files (*.dll)"));
+
+    if (dllPath.isEmpty())
+        return false;
+
+    // Step 2: Load and validate the DLL
+    QString loadErr;
+    if (!loadPlugin(dllPath, &loadErr)) {
+        QMessageBox::warning(parent,
+                             QStringLiteral("ReClass.NET Compat Layer"),
+                             loadErr);
+        return false;
+    }
+
+    // Step 3: Enumerate processes and show picker
+    QVector<PluginProcessInfo> pluginProcesses = enumerateProcesses();
+
+    QList<ProcessInfo> processes;
+    for (const auto& p : pluginProcesses) {
+        ProcessInfo info;
+        info.pid  = p.pid;
+        info.name = p.name;
+        info.path = p.path;
+        info.icon = p.icon;
+        processes.append(info);
+    }
+
+    ProcessPicker picker(processes, parent);
+    if (picker.exec() != QDialog::Accepted)
+        return false;
+
+    uint32_t pid = picker.selectedProcessId();
+    QString name = picker.selectedProcessName();
+
+    // Step 4: Format target as "dllpath|pid:name"
+    *target = QStringLiteral("%1|%2:%3").arg(dllPath).arg(pid).arg(name);
+    return true;
+}
+
+// --Process enumeration --------------------------------------------------
+
+namespace {
+
+struct ProcessCollector {
+    QVector<PluginProcessInfo>* dest = nullptr;
+};
+thread_local ProcessCollector g_processCollector;
+
+void RC_CALLCONV processCallback(EnumerateProcessData* data)
+{
+    if (!data || !g_processCollector.dest) return;
+
+    PluginProcessInfo info;
+    info.pid  = static_cast<uint32_t>(data->Id);
+    info.name = QString::fromUtf16(data->Name);
+    info.path = QString::fromUtf16(data->Path);
+    g_processCollector.dest->append(info);
+}
+
+} // anonymous namespace
+
+QVector<PluginProcessInfo> RcNetCompatPlugin::enumerateProcesses()
+{
+    QVector<PluginProcessInfo> result;
+
+    if (!m_fns.EnumerateProcesses)
+        return result;
+
+    g_processCollector.dest = &result;
+    m_fns.EnumerateProcesses(processCallback);
+    g_processCollector.dest = nullptr;
+
+    return result;
+}
+
+// --Plugin factory -------------------------------------------------------
+
+extern "C" RCX_PLUGIN_EXPORT IPlugin* CreatePlugin()
+{
+    return new RcNetCompatPlugin();
+}

plugins/RcNetPluginCompatLayer/RcNetCompatPlugin.h

@@ -0,0 +1,61 @@
+#pragma once
+#include "../../src/iplugin.h"
+#include "ReClassNET_Plugin.hpp"
+
+#include <QLibrary>
+#include <memory>
+
+#ifdef HAS_CLR_BRIDGE
+#include "ClrHost.h"
+#endif
+
+/**
+ * ReclassX plugin that loads ReClass.NET plugin DLLs
+ * and exposes them as ReclassX providers.
+ *
+ * Supports both native DLLs (C exports) and, when built with
+ * HAS_CLR_BRIDGE, managed .NET assemblies via in-process CLR hosting.
+ *
+ * Target string format: "dllpath|pid:processname"
+ */
+class RcNetCompatPlugin : public IProviderPlugin
+{
+public:
+    // Plugin metadata
+    std::string Name() const override { return "ReClass.NET Compat Layer"; }
+    std::string Version() const override { return "1.0.0"; }
+    std::string Author() const override { return "Reclass"; }
+    std::string Description() const override {
+        return "Loads ReClass.NET native and .NET plugin DLLs as Reclass data sources";
+    }
+    k_ELoadType LoadType() const override { return k_ELoadTypeAuto; }
+    QIcon Icon() const override;
+
+    // IProviderPlugin interface
+    bool canHandle(const QString& target) const override;
+    std::unique_ptr<rcx::Provider> createProvider(const QString& target, QString* errorMsg) override;
+    uint64_t getInitialBaseAddress(const QString& target) const override;
+    bool selectTarget(QWidget* parent, QString* target) override;
+
+    // Override process enumeration -- we enumerate via the loaded DLL
+    bool providesProcessList() const override { return true; }
+    QVector<PluginProcessInfo> enumerateProcesses() override;
+
+private:
+    bool loadPlugin(const QString& path, QString* errorMsg = nullptr);
+    bool loadNativeDll(const QString& path, QString* errorMsg = nullptr);
+    void unloadNativeDll();
+
+#ifdef HAS_CLR_BRIDGE
+    bool loadManagedDll(const QString& path, QString* errorMsg = nullptr);
+    std::unique_ptr<ClrHost> m_clrHost;
+#endif
+
+    std::unique_ptr<QLibrary> m_lib;
+    RcNetFunctions            m_fns;
+    QString                   m_dllPath;
+    bool                      m_isManaged = false;
+};
+
+// Plugin export
+extern "C" RCX_PLUGIN_EXPORT IPlugin* CreatePlugin();

plugins/RcNetPluginCompatLayer/RcNetCompatProvider.cpp

@@ -0,0 +1,125 @@
+#include "RcNetCompatProvider.h"
+
+#include <QFileInfo>
+#include <cstring>
+
+// -- Construction / destruction -------------------------------------------
+
+RcNetCompatProvider::RcNetCompatProvider(const RcNetFunctions& fns,
+                                         uint32_t pid,
+                                         const QString& processName)
+    : m_fns(fns)
+    , m_pid(pid)
+    , m_processName(processName)
+{
+    if (m_fns.OpenRemoteProcess)
+        m_handle = m_fns.OpenRemoteProcess(static_cast<RC_Size>(pid),
+                                           ProcessAccess::Full);
+
+    if (m_handle)
+        cacheModules();
+}
+
+RcNetCompatProvider::~RcNetCompatProvider()
+{
+    if (m_handle && m_fns.CloseRemoteProcess)
+        m_fns.CloseRemoteProcess(m_handle);
+}
+
+// -- Required overrides ---------------------------------------------------
+
+bool RcNetCompatProvider::read(uint64_t addr, void* buf, int len) const
+{
+    if (!m_handle || !m_fns.ReadRemoteMemory || len <= 0)
+        return false;
+
+    uint64_t absAddr = m_base + addr;
+    return m_fns.ReadRemoteMemory(m_handle,
+                                  reinterpret_cast<RC_Pointer>(absAddr),
+                                  static_cast<RC_Pointer>(buf),
+                                  0, len);
+}
+
+int RcNetCompatProvider::size() const
+{
+    if (!m_handle) return 0;
+    if (m_fns.IsProcessValid && !m_fns.IsProcessValid(m_handle)) return 0;
+    return 0x10000;
+}
+
+// -- Optional overrides ---------------------------------------------------
+
+bool RcNetCompatProvider::write(uint64_t addr, const void* buf, int len)
+{
+    if (!m_handle || !m_fns.WriteRemoteMemory || len <= 0)
+        return false;
+
+    uint64_t absAddr = m_base + addr;
+    return m_fns.WriteRemoteMemory(m_handle,
+                                   reinterpret_cast<RC_Pointer>(absAddr),
+                                   const_cast<RC_Pointer>(static_cast<const void*>(buf)),
+                                   0, len);
+}
+
+QString RcNetCompatProvider::getSymbol(uint64_t addr) const
+{
+    for (const auto& mod : m_modules)
+    {
+        if (addr >= mod.base && addr < mod.base + mod.size)
+        {
+            uint64_t offset = addr - mod.base;
+            return QStringLiteral("%1+0x%2")
+                .arg(mod.name)
+                .arg(offset, 0, 16, QChar('0'));
+        }
+    }
+    return {};
+}
+
+// -- Module enumeration ---------------------------------------------------
+
+namespace {
+
+// Thread-local collector for the module enumeration callback.
+// ReClass.NET callbacks are synchronous, so this is safe.
+struct ModuleCollector {
+    QVector<RcNetCompatProvider::ModuleInfo>* dest = nullptr;
+};
+thread_local ModuleCollector g_moduleCollector;
+
+void RC_CALLCONV moduleCallback(EnumerateRemoteModuleData* data)
+{
+    if (!data || !g_moduleCollector.dest) return;
+
+    QString path = QString::fromUtf16(data->Path);
+    QFileInfo fi(path);
+
+    RcNetCompatProvider::ModuleInfo info;
+    info.name = fi.fileName();
+    info.base = reinterpret_cast<uint64_t>(data->BaseAddress);
+    info.size = static_cast<uint64_t>(data->Size);
+    g_moduleCollector.dest->append(info);
+}
+
+// We still need a section callback even though we don't use it.
+void RC_CALLCONV sectionCallback(EnumerateRemoteSectionData*)
+{
+    // Intentionally empty -- we only need module data.
+}
+
+} // anonymous namespace
+
+void RcNetCompatProvider::cacheModules()
+{
+    if (!m_fns.EnumerateRemoteSectionsAndModules || !m_handle)
+        return;
+
+    m_modules.clear();
+    g_moduleCollector.dest = &m_modules;
+    m_fns.EnumerateRemoteSectionsAndModules(m_handle, sectionCallback, moduleCallback);
+    g_moduleCollector.dest = nullptr;
+
+    // Set base to first module if we got any
+    if (!m_modules.isEmpty() && m_base == 0)
+        m_base = m_modules.first().base;
+}

plugins/RcNetPluginCompatLayer/RcNetCompatProvider.h

@@ -0,0 +1,48 @@
+#pragma once
+#include "../../src/providers/provider.h"
+#include "ReClassNET_Plugin.hpp"
+
+#include <QString>
+#include <QVector>
+
+/**
+ * Provider that bridges ReClass.NET native plugin DLL calls
+ * to the ReclassX Provider interface.
+ */
+class RcNetCompatProvider : public rcx::Provider
+{
+public:
+    RcNetCompatProvider(const RcNetFunctions& fns, uint32_t pid,
+                        const QString& processName);
+    ~RcNetCompatProvider() override;
+
+    // Required overrides
+    bool read(uint64_t addr, void* buf, int len) const override;
+    int  size() const override;
+
+    // Optional overrides
+    bool     write(uint64_t addr, const void* buf, int len) override;
+    bool     isWritable() const override { return m_fns.WriteRemoteMemory != nullptr; }
+    QString  name() const override { return m_processName; }
+    QString  kind() const override { return QStringLiteral("RcNet"); }
+    bool     isLive() const override { return true; }
+    uint64_t base() const override { return m_base; }
+    void     setBase(uint64_t b) override { m_base = b; }
+    QString  getSymbol(uint64_t addr) const override;
+
+    struct ModuleInfo {
+        QString  name;
+        uint64_t base;
+        uint64_t size;
+    };
+
+private:
+    void cacheModules();
+
+    RcNetFunctions m_fns;
+    RC_Pointer     m_handle = nullptr;
+    uint32_t       m_pid;
+    QString        m_processName;
+    uint64_t       m_base = 0;
+    QVector<ModuleInfo> m_modules;
+};

plugins/RcNetPluginCompatLayer/ReClassNET_Plugin.hpp

@@ -0,0 +1,140 @@
+#pragma once
+// Subset of ReClass.NET native plugin types needed for the compatibility layer.
+// Based on the ReClass.NET NativeCore plugin interface.
+// Only types required by the 8 supported exports are included (no debug types).
+
+#include <cstdint>
+
+#ifdef _WIN32
+#define RC_CALLCONV __stdcall
+#else
+#define RC_CALLCONV
+#endif
+
+// -- Basic types ----------------------------------------------------------
+
+using RC_Pointer = void*;
+using RC_Size    = uint64_t;
+using RC_UnicodeChar = char16_t;
+
+// -- Enums ----------------------------------------------------------------
+
+enum class ProcessAccess
+{
+    Read    = 0,
+    Write   = 1,
+    Full    = 2
+};
+
+enum class SectionProtection
+{
+    NoAccess  = 0,
+    Read      = 1,
+    Write     = 2,
+    Execute   = 4,
+    Guard     = 8
+};
+
+enum class SectionType
+{
+    Unknown = 0,
+    Private = 1,
+    Mapped  = 2,
+    Image   = 3
+};
+
+enum class SectionCategory
+{
+    Unknown = 0,
+    CODE    = 1,
+    DATA    = 2,
+    HEAP    = 3
+};
+
+enum class ControlRemoteProcessAction
+{
+    Suspend = 0,
+    Resume  = 1,
+    Terminate = 2
+};
+
+// -- Callback data structures ---------------------------------------------
+
+#pragma pack(push, 1)
+
+struct EnumerateProcessData
+{
+    RC_Size     Id;
+    RC_UnicodeChar Name[260];
+    RC_UnicodeChar Path[260];
+};
+
+struct EnumerateRemoteSectionData
+{
+    RC_Pointer        BaseAddress;
+    RC_Size           Size;
+    SectionType       Type;
+    SectionCategory   Category;
+    SectionProtection Protection;
+    RC_UnicodeChar    Name[16];
+    RC_UnicodeChar    ModulePath[260];
+};
+
+struct EnumerateRemoteModuleData
+{
+    RC_Pointer     BaseAddress;
+    RC_Size        Size;
+    RC_UnicodeChar Path[260];
+};
+
+#pragma pack(pop)
+
+// -- Callback typedefs ----------------------------------------------------
+
+using EnumerateProcessCallback        = void(RC_CALLCONV*)(EnumerateProcessData* data);
+using EnumerateRemoteSectionsCallback  = void(RC_CALLCONV*)(EnumerateRemoteSectionData* data);
+using EnumerateRemoteModulesCallback   = void(RC_CALLCONV*)(EnumerateRemoteModuleData* data);
+
+// -- Function pointer typedefs for resolved exports -----------------------
+
+using FnEnumerateProcesses = void(RC_CALLCONV*)(EnumerateProcessCallback callback);
+
+using FnOpenRemoteProcess  = RC_Pointer(RC_CALLCONV*)(RC_Size id, ProcessAccess desiredAccess);
+
+using FnIsProcessValid     = bool(RC_CALLCONV*)(RC_Pointer handle);
+
+using FnCloseRemoteProcess = void(RC_CALLCONV*)(RC_Pointer handle);
+
+using FnReadRemoteMemory   = bool(RC_CALLCONV*)(RC_Pointer handle,
+                                                 RC_Pointer address,
+                                                 RC_Pointer buffer,
+                                                 int offset,
+                                                 int size);
+
+using FnWriteRemoteMemory  = bool(RC_CALLCONV*)(RC_Pointer handle,
+                                                  RC_Pointer address,
+                                                  RC_Pointer buffer,
+                                                  int offset,
+                                                  int size);
+
+using FnEnumerateRemoteSectionsAndModules =
+    void(RC_CALLCONV*)(RC_Pointer handle,
+                       EnumerateRemoteSectionsCallback sectionCallback,
+                       EnumerateRemoteModulesCallback  moduleCallback);
+
+using FnControlRemoteProcess = void(RC_CALLCONV*)(RC_Pointer handle,
+                                                    ControlRemoteProcessAction action);
+
+// -- Resolved function table ----------------------------------------------
+
+struct RcNetFunctions
+{
+    FnEnumerateProcesses                EnumerateProcesses               = nullptr;
+    FnOpenRemoteProcess                 OpenRemoteProcess                = nullptr;
+    FnIsProcessValid                    IsProcessValid                   = nullptr;
+    FnCloseRemoteProcess                CloseRemoteProcess               = nullptr;
+    FnReadRemoteMemory                  ReadRemoteMemory                 = nullptr;
+    FnWriteRemoteMemory                 WriteRemoteMemory                = nullptr;
+    FnEnumerateRemoteSectionsAndModules EnumerateRemoteSectionsAndModules = nullptr;
+    FnControlRemoteProcess              ControlRemoteProcess             = nullptr;
+};

plugins/RcNetPluginCompatLayer/bridge/RcNetBridge.cs

@@ -0,0 +1,677 @@
+// RcNetBridge -- in-process C# bridge for loading .NET ReClass.NET plugins.
+//
+// Called from C++ via ICLRRuntimeHost::ExecuteInDefaultAppDomain().
+// The single entry point is Bridge.Initialize(string arg) where arg is:
+//   "<hex_address_of_RcNetFunctions>|<plugin_dll_path>"
+//
+// The bridge:
+//   1. Registers an AssemblyResolve handler that provides THIS assembly
+//      when a plugin asks for "ReClassNET", so the stub types below satisfy
+//      the plugin's type references.
+//   2. Loads the plugin assembly and finds an ICoreProcessFunctions
+//      implementation.
+//   3. Creates [UnmanagedFunctionPointer] delegates wrapping each method.
+//   4. Writes the native-callable function pointers into the RcNetFunctions
+//      struct at the address provided by C++.
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+// ===========================================================================
+// ReClass.NET stub types
+// These mirror the subset of types from the ReClass.NET assembly that
+// memory-reading plugins reference.  When the CLR resolves "ReClassNET"
+// via our AssemblyResolve handler, it gets THIS assembly, and these types
+// satisfy the plugin's type references.
+//
+// Types are placed in the exact namespaces used by the real ReClass.NET
+// assembly so that plugins compiled against it resolve correctly.
+// ===========================================================================
+
+// --------------------------------------------------------------------------
+// ReClassNET.Memory -- section enums (referenced by EnumerateRemoteSectionData)
+// --------------------------------------------------------------------------
+namespace ReClassNET.Memory
+{
+    public enum SectionProtection
+    {
+        NoAccess = 0,
+        Read     = 1,
+        Write    = 2,
+        Execute  = 4,
+        Guard    = 8
+    }
+
+    public enum SectionType
+    {
+        Unknown = 0,
+        Private = 1,
+        Mapped  = 2,
+        Image   = 3
+    }
+
+    public enum SectionCategory
+    {
+        Unknown = 0,
+        CODE    = 1,
+        DATA    = 2,
+        HEAP    = 3
+    }
+}
+
+// --------------------------------------------------------------------------
+// ReClassNET.Debugger -- debugger types (used by ICoreProcessFunctions)
+// --------------------------------------------------------------------------
+namespace ReClassNET.Debugger
+{
+    public enum DebugContinueStatus
+    {
+        Handled    = 0,
+        NotHandled = 1
+    }
+
+    public enum HardwareBreakpointRegister
+    {
+        InvalidRegister = 0,
+        Dr0 = 1,
+        Dr1 = 2,
+        Dr2 = 3,
+        Dr3 = 4
+    }
+
+    public enum HardwareBreakpointTrigger
+    {
+        Execute = 0,
+        Access  = 1,
+        Write   = 2
+    }
+
+    public enum HardwareBreakpointSize
+    {
+        Size1 = 1,
+        Size2 = 2,
+        Size4 = 4,
+        Size8 = 8
+    }
+
+    public struct ExceptionDebugInfo
+    {
+        public IntPtr ExceptionCode;
+        public IntPtr ExceptionFlags;
+        public IntPtr ExceptionAddress;
+        public HardwareBreakpointRegister CausedBy;
+        public RegisterInfo Registers;
+
+        public struct RegisterInfo
+        {
+            public IntPtr Rax, Rbx, Rcx, Rdx;
+            public IntPtr Rdi, Rsi, Rsp, Rbp, Rip;
+            public IntPtr R8, R9, R10, R11, R12, R13, R14, R15;
+        }
+    }
+
+    public struct DebugEvent
+    {
+        public DebugContinueStatus ContinueStatus;
+        public IntPtr ProcessId;
+        public IntPtr ThreadId;
+        public ExceptionDebugInfo ExceptionInfo;
+    }
+}
+
+// --------------------------------------------------------------------------
+// ReClassNET.Core -- interface, enums, delegates, and data structs
+// --------------------------------------------------------------------------
+namespace ReClassNET.Core
+{
+    public enum ProcessAccess
+    {
+        Read  = 0,
+        Write = 1,
+        Full  = 2
+    }
+
+    public enum ControlRemoteProcessAction
+    {
+        Suspend   = 0,
+        Resume    = 1,
+        Terminate = 2
+    }
+
+    public struct EnumerateProcessData
+    {
+        public IntPtr Id;
+        public string Name;
+        public string Path;
+    }
+
+    public struct EnumerateRemoteSectionData
+    {
+        public IntPtr                          BaseAddress;
+        public IntPtr                          Size;
+        public ReClassNET.Memory.SectionType       Type;
+        public ReClassNET.Memory.SectionCategory   Category;
+        public ReClassNET.Memory.SectionProtection Protection;
+        public string                          Name;
+        public string                          ModulePath;
+    }
+
+    public struct EnumerateRemoteModuleData
+    {
+        public IntPtr BaseAddress;
+        public IntPtr Size;
+        public string Path;
+    }
+
+    public delegate void EnumerateProcessCallback(ref EnumerateProcessData data);
+    public delegate void EnumerateRemoteSectionCallback(ref EnumerateRemoteSectionData data);
+    public delegate void EnumerateRemoteModuleCallback(ref EnumerateRemoteModuleData data);
+
+    public interface ICoreProcessFunctions
+    {
+        void   EnumerateProcesses(EnumerateProcessCallback callbackProcess);
+        IntPtr OpenRemoteProcess(IntPtr pid, ProcessAccess desiredAccess);
+        bool   IsProcessValid(IntPtr process);
+        void   CloseRemoteProcess(IntPtr process);
+        bool   ReadRemoteMemory(IntPtr process, IntPtr address, ref byte[] buffer, int offset, int size);
+        bool   WriteRemoteMemory(IntPtr process, IntPtr address, ref byte[] buffer, int offset, int size);
+        void   EnumerateRemoteSectionsAndModules(
+                   IntPtr process,
+                   EnumerateRemoteSectionCallback callbackSection,
+                   EnumerateRemoteModuleCallback  callbackModule);
+        void   ControlRemoteProcess(IntPtr process, ControlRemoteProcessAction action);
+
+        // Debugger methods -- stubs required for interface compatibility
+        bool AttachDebuggerToProcess(IntPtr id);
+        void DetachDebuggerFromProcess(IntPtr id);
+        bool AwaitDebugEvent(ref ReClassNET.Debugger.DebugEvent evt, int timeoutInMilliseconds);
+        void HandleDebugEvent(ref ReClassNET.Debugger.DebugEvent evt);
+        bool SetHardwareBreakpoint(IntPtr id, IntPtr address,
+                 ReClassNET.Debugger.HardwareBreakpointRegister register,
+                 ReClassNET.Debugger.HardwareBreakpointTrigger trigger,
+                 ReClassNET.Debugger.HardwareBreakpointSize size,
+                 bool set);
+    }
+}
+
+// --------------------------------------------------------------------------
+// ReClassNET.Memory -- RemoteProcess stub
+// --------------------------------------------------------------------------
+namespace ReClassNET.Memory
+{
+    public class RemoteProcess { }
+}
+
+// --------------------------------------------------------------------------
+// ReClassNET.Logger -- ILogger stub
+// --------------------------------------------------------------------------
+namespace ReClassNET.Logger
+{
+    public interface ILogger { }
+}
+
+// --------------------------------------------------------------------------
+// Stub types for IPluginHost properties
+// --------------------------------------------------------------------------
+namespace ReClassNET.Forms
+{
+    public class MainForm { }
+}
+
+namespace ReClassNET
+{
+    public class Settings { }
+}
+
+// --------------------------------------------------------------------------
+// ReClassNET.Plugins
+// --------------------------------------------------------------------------
+namespace ReClassNET.Plugins
+{
+    public abstract class Plugin : IDisposable
+    {
+        public virtual bool Initialize(IPluginHost host) { return true; }
+        public virtual void Terminate() { }
+        public virtual void Dispose() { }
+    }
+
+    public interface IPluginHost
+    {
+        ReClassNET.Forms.MainForm MainWindow { get; }
+        System.Resources.ResourceManager Resources { get; }
+        ReClassNET.Memory.RemoteProcess Process { get; }
+        ReClassNET.Logger.ILogger Logger { get; }
+        ReClassNET.Settings Settings { get; }
+    }
+}
+
+// ===========================================================================
+// Bridge
+// ===========================================================================
+
+namespace RcNetBridge
+{
+    internal class StubPluginHost : ReClassNET.Plugins.IPluginHost
+    {
+        public ReClassNET.Forms.MainForm MainWindow => null;
+        public System.Resources.ResourceManager Resources => null;
+        public ReClassNET.Memory.RemoteProcess Process => null;
+        public ReClassNET.Logger.ILogger Logger => null;
+        public ReClassNET.Settings Settings => null;
+    }
+
+    public class Bridge
+    {
+        // -- Persistent state (static so it survives after Initialize returns) --
+
+        private static ReClassNET.Core.ICoreProcessFunctions s_functions;
+        private static readonly List<Delegate> s_pinned = new List<Delegate>();
+
+        // -- Entry point called from C++ --------------------------------------
+
+        /// <summary>
+        /// Called by ICLRRuntimeHost::ExecuteInDefaultAppDomain.
+        /// arg = "&lt;hex_address_of_RcNetFunctions&gt;|&lt;plugin_dll_path&gt;"
+        /// Returns 0 on success, non-zero error code on failure.
+        /// </summary>
+        public static int Initialize(string arg)
+        {
+            try
+            {
+                int sep = arg.IndexOf('|');
+                if (sep < 0) return 1; // bad arg
+
+                long ptrValue = long.Parse(arg.Substring(0, sep), NumberStyles.HexNumber);
+                IntPtr funcTablePtr = new IntPtr(ptrValue);
+                string pluginPath = arg.Substring(sep + 1);
+
+                // Set up assembly resolution
+                string pluginDir = Path.GetDirectoryName(pluginPath) ?? ".";
+                string parentDir = Path.GetDirectoryName(pluginDir);
+
+                AppDomain.CurrentDomain.AssemblyResolve += (sender, resolveArgs) =>
+                {
+                    string asmName = new AssemblyName(resolveArgs.Name).Name;
+
+                    // Provide our own assembly as the "ReClass.NET" stub
+                    if (string.Equals(asmName, "ReClass.NET", StringComparison.OrdinalIgnoreCase))
+                        return typeof(Bridge).Assembly;
+
+                    // Search plugin directory and parent for other dependencies
+                    string dllName = asmName + ".dll";
+                    foreach (string dir in new[] { pluginDir, parentDir })
+                    {
+                        if (dir == null) continue;
+                        string path = Path.Combine(dir, dllName);
+                        if (File.Exists(path))
+                            return Assembly.LoadFrom(path);
+                    }
+                    return null;
+                };
+
+                // Load plugin and find ICoreProcessFunctions
+                if (!LoadPlugin(pluginPath))
+                    return 2; // no implementation found
+
+                // Write function pointers
+                WriteFunctionPointers(funcTablePtr);
+                return 0;
+            }
+            catch (Exception ex) when (ex is ReflectionTypeLoadException || ex is FileNotFoundException)
+            {
+                return 3;
+            }
+            catch
+            {
+                return 4;
+            }
+        }
+
+        // -- Plugin loading ---------------------------------------------------
+
+        private static bool LoadPlugin(string pluginPath)
+        {
+            Assembly asm = Assembly.LoadFrom(pluginPath);
+
+            // Find a concrete type that implements ICoreProcessFunctions.
+            // ReClass.NET plugins typically extend Plugin and directly
+            // implement ICoreProcessFunctions on the same class.
+            foreach (Type type in asm.GetExportedTypes())
+            {
+                if (type.IsAbstract || type.IsInterface) continue;
+
+                Type iface = type.GetInterfaces().FirstOrDefault(i =>
+                    i.FullName == "ReClassNET.Core.ICoreProcessFunctions");
+                if (iface == null) continue;
+
+                object instance = Activator.CreateInstance(type);
+
+                // Try calling Initialize() but don't fail if it throws --
+                // plugins use it for UI integration with the host app,
+                // which we can't fully provide. The process functions
+                // (ReadRemoteMemory, etc.) work without it.
+                try
+                {
+                    MethodInfo init = type.GetMethod("Initialize",
+                        BindingFlags.Public | BindingFlags.Instance,
+                        null, new[] { typeof(ReClassNET.Plugins.IPluginHost) }, null);
+                    if (init != null)
+                        init.Invoke(instance, new object[] { new StubPluginHost() });
+                }
+                catch { }
+
+                s_functions = (ReClassNET.Core.ICoreProcessFunctions)instance;
+                return true;
+            }
+
+            return false;
+        }
+
+        // -- Native-callable delegate types -----------------------------------
+        // These match the C++ RcNetFunctions struct field order exactly.
+        // On x64 Windows all calling conventions collapse to the Microsoft
+        // x64 ABI, so StdCall is used for documentation / x86 correctness.
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        delegate void DelEnumProcesses(IntPtr callback);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        delegate IntPtr DelOpenRemoteProcess(ulong id, int access);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.I1)]
+        delegate bool DelIsProcessValid(IntPtr handle);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        delegate void DelCloseRemoteProcess(IntPtr handle);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.I1)]
+        delegate bool DelReadRemoteMemory(IntPtr handle, IntPtr address,
+            IntPtr buffer, int offset, int size);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        [return: MarshalAs(UnmanagedType.I1)]
+        delegate bool DelWriteRemoteMemory(IntPtr handle, IntPtr address,
+            IntPtr buffer, int offset, int size);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        delegate void DelEnumSectionsAndModules(IntPtr handle,
+            IntPtr sectionCallback, IntPtr moduleCallback);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        delegate void DelControlRemoteProcess(IntPtr handle, int action);
+
+        // Callback delegate types -- these point into C++ and are called by us.
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        delegate void NativeProcessCallback(IntPtr data);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        delegate void NativeSectionCallback(IntPtr data);
+
+        [UnmanagedFunctionPointer(CallingConvention.StdCall)]
+        delegate void NativeModuleCallback(IntPtr data);
+
+        // -- Write function pointers to the C++ struct ------------------------
+
+        private static void WriteFunctionPointers(IntPtr funcTable)
+        {
+            // RcNetFunctions layout: 8 consecutive function pointers.
+            int i = 0;
+            WriteSlot(funcTable, i++, Pin<DelEnumProcesses>(EnumProcessesImpl));
+            WriteSlot(funcTable, i++, Pin<DelOpenRemoteProcess>(OpenProcessImpl));
+            WriteSlot(funcTable, i++, Pin<DelIsProcessValid>(IsProcessValidImpl));
+            WriteSlot(funcTable, i++, Pin<DelCloseRemoteProcess>(CloseProcessImpl));
+            WriteSlot(funcTable, i++, Pin<DelReadRemoteMemory>(ReadMemoryImpl));
+            WriteSlot(funcTable, i++, Pin<DelWriteRemoteMemory>(WriteMemoryImpl));
+            WriteSlot(funcTable, i++, Pin<DelEnumSectionsAndModules>(EnumSectionsModulesImpl));
+            WriteSlot(funcTable, i++, Pin<DelControlRemoteProcess>(ControlProcessImpl));
+        }
+
+        private static IntPtr Pin<T>(T del) where T : class
+        {
+            Delegate d = del as Delegate;
+            s_pinned.Add(d);  // prevent GC
+            return Marshal.GetFunctionPointerForDelegate(d);
+        }
+
+        private static void WriteSlot(IntPtr table, int index, IntPtr value)
+        {
+            Marshal.WriteIntPtr(table, index * IntPtr.Size, value);
+        }
+
+        // -- Implementation methods -------------------------------------------
+
+        // -- EnumerateProcesses --
+        // C++ passes a native callback; we call the plugin, convert each
+        // managed EnumerateProcessData to the packed native layout, and
+        // forward to the native callback.
+
+        private static void EnumProcessesImpl(IntPtr nativeCallbackPtr)
+        {
+            try
+            {
+                if (s_functions == null || nativeCallbackPtr == IntPtr.Zero) return;
+
+                NativeProcessCallback nativeCb =
+                    Marshal.GetDelegateForFunctionPointer<NativeProcessCallback>(nativeCallbackPtr);
+
+                // Native layout (pack=1): uint64 Id + char16[260] Name + char16[260] Path
+                const int kStructSize = 8 + 520 + 520; // 1048 bytes
+
+                s_functions.EnumerateProcesses(
+                    (ref ReClassNET.Core.EnumerateProcessData data) =>
+                {
+                    IntPtr mem = Marshal.AllocHGlobal(kStructSize);
+                    try
+                    {
+                        // Zero-fill
+                        byte[] zeros = new byte[kStructSize];
+                        Marshal.Copy(zeros, 0, mem, kStructSize);
+
+                        // Id (8 bytes at offset 0)
+                        Marshal.WriteInt64(mem, 0, data.Id.ToInt64());
+
+                        // Name (char16[260] at offset 8)
+                        if (data.Name != null)
+                        {
+                            char[] chars = data.Name.ToCharArray();
+                            int count = Math.Min(chars.Length, 259);
+                            Marshal.Copy(chars, 0, new IntPtr(mem.ToInt64() + 8), count);
+                        }
+
+                        // Path (char16[260] at offset 528)
+                        if (data.Path != null)
+                        {
+                            char[] chars = data.Path.ToCharArray();
+                            int count = Math.Min(chars.Length, 259);
+                            Marshal.Copy(chars, 0, new IntPtr(mem.ToInt64() + 528), count);
+                        }
+
+                        nativeCb(mem);
+                    }
+                    finally
+                    {
+                        Marshal.FreeHGlobal(mem);
+                    }
+                });
+            }
+            catch { /* swallow -- don't crash the host process */ }
+        }
+
+        // -- OpenRemoteProcess --
+        private static IntPtr OpenProcessImpl(ulong id, int access)
+        {
+            try
+            {
+                if (s_functions == null) return IntPtr.Zero;
+                return s_functions.OpenRemoteProcess(
+                    new IntPtr((long)id),
+                    (ReClassNET.Core.ProcessAccess)access);
+            }
+            catch { return IntPtr.Zero; }
+        }
+
+        // -- IsProcessValid --
+        private static bool IsProcessValidImpl(IntPtr handle)
+        {
+            try
+            {
+                if (s_functions == null) return false;
+                return s_functions.IsProcessValid(handle);
+            }
+            catch { return false; }
+        }
+
+        // -- CloseRemoteProcess --
+        private static void CloseProcessImpl(IntPtr handle)
+        {
+            try { s_functions?.CloseRemoteProcess(handle); }
+            catch { }
+        }
+
+        // -- ReadRemoteMemory --
+        // C++ provides a native buffer pointer. We read into a managed array
+        // via the plugin's interface, then copy to the native buffer.
+        private static bool ReadMemoryImpl(IntPtr handle, IntPtr address,
+            IntPtr buffer, int offset, int size)
+        {
+            try
+            {
+                if (s_functions == null || size <= 0) return false;
+
+                byte[] managed = new byte[size];
+                bool ok = s_functions.ReadRemoteMemory(
+                    handle, address, ref managed, 0, size);
+
+                if (ok)
+                    Marshal.Copy(managed, 0, new IntPtr(buffer.ToInt64() + offset), size);
+
+                return ok;
+            }
+            catch { return false; }
+        }
+
+        // -- WriteRemoteMemory --
+        private static bool WriteMemoryImpl(IntPtr handle, IntPtr address,
+            IntPtr buffer, int offset, int size)
+        {
+            try
+            {
+                if (s_functions == null || size <= 0) return false;
+
+                byte[] managed = new byte[size];
+                Marshal.Copy(new IntPtr(buffer.ToInt64() + offset), managed, 0, size);
+
+                return s_functions.WriteRemoteMemory(
+                    handle, address, ref managed, 0, size);
+            }
+            catch { return false; }
+        }
+
+        // -- EnumerateRemoteSectionsAndModules --
+        private static void EnumSectionsModulesImpl(IntPtr handle,
+            IntPtr sectionCallbackPtr, IntPtr moduleCallbackPtr)
+        {
+            try
+            {
+                if (s_functions == null) return;
+
+                // Section callback -- forward to native
+                // Native layout (pack=1): RC_Pointer Base(8) + RC_Size Size(8) +
+                //   SectionType(4) + SectionCategory(4) + SectionProtection(4) +
+                //   char16 Name[16](32) + char16 ModulePath[260](520) = 580 bytes
+                NativeSectionCallback nativeSectionCb = (sectionCallbackPtr != IntPtr.Zero)
+                    ? Marshal.GetDelegateForFunctionPointer<NativeSectionCallback>(sectionCallbackPtr)
+                    : null;
+
+                // Module callback -- forward to native
+                // Native layout (pack=1): RC_Pointer Base(8) + RC_Size Size(8) +
+                //   char16 Path[260](520) = 536 bytes
+                NativeModuleCallback nativeModuleCb = (moduleCallbackPtr != IntPtr.Zero)
+                    ? Marshal.GetDelegateForFunctionPointer<NativeModuleCallback>(moduleCallbackPtr)
+                    : null;
+
+                s_functions.EnumerateRemoteSectionsAndModules(handle,
+                    // Section callback
+                    (ref ReClassNET.Core.EnumerateRemoteSectionData sdata) =>
+                    {
+                        if (nativeSectionCb == null) return;
+
+                        const int kSize = 8 + 8 + 4 + 4 + 4 + 32 + 520; // 580
+                        IntPtr mem = Marshal.AllocHGlobal(kSize);
+                        try
+                        {
+                            byte[] z = new byte[kSize];
+                            Marshal.Copy(z, 0, mem, kSize);
+
+                            Marshal.WriteInt64(mem, 0, sdata.BaseAddress.ToInt64());
+                            Marshal.WriteInt64(mem, 8, sdata.Size.ToInt64());
+                            Marshal.WriteInt32(mem, 16, (int)sdata.Type);
+                            Marshal.WriteInt32(mem, 20, (int)sdata.Category);
+                            Marshal.WriteInt32(mem, 24, (int)sdata.Protection);
+
+                            if (sdata.Name != null)
+                            {
+                                char[] c = sdata.Name.ToCharArray();
+                                Marshal.Copy(c, 0, new IntPtr(mem.ToInt64() + 28),
+                                    Math.Min(c.Length, 15));
+                            }
+                            if (sdata.ModulePath != null)
+                            {
+                                char[] c = sdata.ModulePath.ToCharArray();
+                                Marshal.Copy(c, 0, new IntPtr(mem.ToInt64() + 60),
+                                    Math.Min(c.Length, 259));
+                            }
+
+                            nativeSectionCb(mem);
+                        }
+                        finally { Marshal.FreeHGlobal(mem); }
+                    },
+                    // Module callback
+                    (ref ReClassNET.Core.EnumerateRemoteModuleData mdata) =>
+                    {
+                        if (nativeModuleCb == null) return;
+
+                        const int kSize = 8 + 8 + 520; // 536
+                        IntPtr mem = Marshal.AllocHGlobal(kSize);
+                        try
+                        {
+                            byte[] z = new byte[kSize];
+                            Marshal.Copy(z, 0, mem, kSize);
+
+                            Marshal.WriteInt64(mem, 0, mdata.BaseAddress.ToInt64());
+                            Marshal.WriteInt64(mem, 8, mdata.Size.ToInt64());
+
+                            if (mdata.Path != null)
+                            {
+                                char[] c = mdata.Path.ToCharArray();
+                                Marshal.Copy(c, 0, new IntPtr(mem.ToInt64() + 16),
+                                    Math.Min(c.Length, 259));
+                            }
+
+                            nativeModuleCb(mem);
+                        }
+                        finally { Marshal.FreeHGlobal(mem); }
+                    });
+            }
+            catch { }
+        }
+
+        // -- ControlRemoteProcess --
+        private static void ControlProcessImpl(IntPtr handle, int action)
+        {
+            try
+            {
+                s_functions?.ControlRemoteProcess(handle,
+                    (ReClassNET.Core.ControlRemoteProcessAction)action);
+            }
+            catch { }
+        }
+    }
+}

plugins/RcNetPluginCompatLayer/bridge/RcNetBridge.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <OutputType>Library</OutputType>
+    <AssemblyName>RcNetBridge</AssemblyName>
+    <RootNamespace>RcNetBridge</RootNamespace>
+    <AllowUnsafeBlocks>false</AllowUnsafeBlocks>
+    <LangVersion>7.3</LangVersion>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+  </PropertyGroup>
+</Project>

src/compose.cpp

@@ -14,8 +14,9 @@ constexpr uint64_t kGoldenRatio      = 0x9E3779B97F4A7C15ULL;
 struct ComposeState {
     QString            text;
     QVector<LineMeta>  meta;
-    QSet<uint64_t>     visiting;   // cycle detection for struct recursion
-    QSet<qulonglong>   ptrVisiting; // cycle guard for pointer expansions
+    QSet<uint64_t>     visiting;      // cycle detection for struct recursion
+    QSet<qulonglong>   ptrVisiting;   // cycle guard for pointer expansions
+    QSet<uint64_t>     virtualPtrRefs; // refIds currently being virtually expanded via pointer deref
     int                currentLine = 0;
     int                typeW       = kColType;  // global type column width (fallback)
     int                nameW       = kColName;  // global name column width (fallback)
@@ -64,7 +65,6 @@ uint32_t computeMarkers(const Node& node, const Provider& /*prov*/,
                         uint64_t /*addr*/, bool isCont, int /*depth*/) {
     uint32_t mask = 0;
     if (isCont)                          mask |= (1u << M_CONT);
-    if (node.kind == NodeKind::Padding)  mask |= (1u << M_PAD);
     // No ambient validation markers — errors only shown during inline editing.
     return mask;
 }
@@ -118,14 +118,7 @@ void composeLeaf(ComposeState& state, const NodeTree& tree,
     int typeW = state.effectiveTypeW(scopeId);
     int nameW = state.effectiveNameW(scopeId);
 
-    // Line count: padding wraps at 8 bytes per line
-    int numLines;
-    if (node.kind == NodeKind::Padding) {
-        int totalBytes = qMax(1, node.arrayLen);
-        numLines = (totalBytes + 7) / 8;
-    } else {
-        numLines = linesForKind(node.kind);
-    }
+    int numLines = linesForKind(node.kind);
 
     // Resolve pointer target name for display
     QString ptrTypeOverride;
@@ -156,12 +149,7 @@ void composeLeaf(ComposeState& state, const NodeTree& tree,
 
         // Set byte count for hex preview lines (used for per-byte change highlighting)
         if (isHexPreview(node.kind)) {
-            if (node.kind == NodeKind::Padding) {
-                int totalSz = qMax(1, node.arrayLen);
-                lm.lineByteCount = qMin(8, totalSz - sub * 8);
-            } else {
-                lm.lineByteCount = sizeForKind(node.kind);
-            }
+            lm.lineByteCount = sizeForKind(node.kind);
         }
 
         QString lineText = fmt::fmtNodeLine(node, prov, absAddr, depth, sub,
@@ -430,29 +418,42 @@ void composeNode(ComposeState& state, const NodeTree& tree,
         QString ptrTargetName = resolvePointerTarget(tree, node.refId);
         QString ptrTypeOverride = fmt::pointerTypeName(node.kind, ptrTargetName);
 
+        // Check if this pointer has materialized children (from materializeRefChildren)
+        QVector<int> ptrChildren = state.childMap.value(node.id);
+        bool hasMaterialized = !ptrChildren.isEmpty();
+
+        // Force collapsed if this refId is already being virtually expanded
+        // (prevents infinite recursion in virtual expansion mode).
+        // Materialized children bypass this — they are real tree nodes with
+        // independent collapsed state, so recursion is bounded by the tree.
+        bool forceCollapsed = !hasMaterialized
+                              && state.virtualPtrRefs.contains(node.refId);
+        bool effectiveCollapsed = node.collapsed || forceCollapsed;
+
         // Emit merged fold header: "Type* Name {" (expanded) or "Type* Name -> val" (collapsed)
         {
             LineMeta lm;
             lm.nodeIdx    = nodeIdx;
             lm.nodeId     = node.id;
             lm.depth      = depth;
-            lm.lineKind   = node.collapsed ? LineKind::Field : LineKind::Header;
+            lm.lineKind   = effectiveCollapsed ? LineKind::Field : LineKind::Header;
             lm.offsetText = fmt::fmtOffsetMargin(tree.baseAddress + absAddr, false, state.offsetHexDigits);
             lm.offsetAddr = tree.baseAddress + absAddr;
             lm.nodeKind   = node.kind;
             lm.foldHead      = true;
-            lm.foldCollapsed = node.collapsed;
+            lm.foldCollapsed = effectiveCollapsed;
             lm.foldLevel  = computeFoldLevel(depth, true);
             lm.markerMask = computeMarkers(node, prov, absAddr, false, depth);
+            if (forceCollapsed) lm.markerMask |= (1u << M_CYCLE);
             lm.effectiveTypeW = typeW;
             lm.effectiveNameW = nameW;
             lm.pointerTargetName = ptrTargetName;
-            state.emitLine(fmt::fmtPointerHeader(node, depth, node.collapsed,
+            state.emitLine(fmt::fmtPointerHeader(node, depth, effectiveCollapsed,
                                                   prov, absAddr, ptrTypeOverride,
                                                   typeW, nameW), lm);
         }
 
-        if (!node.collapsed) {
+        if (!effectiveCollapsed) {
             int sz = node.byteSize();
             uint64_t ptrVal = 0;
             if (prov.isValid() && sz > 0 && prov.isReadable(absAddr, sz)) {
@@ -480,18 +481,42 @@ void composeNode(ComposeState& state, const NodeTree& tree,
             if (!ptrReadable)
                 pBase = (uint64_t)0 - tree.baseAddress;
 
-            qulonglong key = pBase ^ (node.refId * kGoldenRatio);
-            if (!state.ptrVisiting.contains(key)) {
-                state.ptrVisiting.insert(key);
-                int refIdx = tree.indexOfId(node.refId);
-                if (refIdx >= 0) {
-                    const Node& ref = tree.nodes[refIdx];
-                    if (ref.kind == NodeKind::Struct || ref.kind == NodeKind::Array)
-                        composeParent(state, tree, childProv, refIdx,
-                                      depth, pBase, ref.id,
-                                      /*isArrayChild=*/true);
+            if (hasMaterialized) {
+                // Render materialized children at the pointer target address.
+                // These are real tree nodes with independent state — use rootId
+                // so resolveAddr computes offsets relative to the pointer target.
+                std::sort(ptrChildren.begin(), ptrChildren.end(), [&](int a, int b) {
+                    return tree.nodes[a].offset < tree.nodes[b].offset;
+                });
+                for (int childIdx : ptrChildren) {
+                    composeNode(state, tree, childProv, childIdx, depth + 1,
+                                pBase, node.id, false, node.id);
+                }
+            } else {
+                // Virtual expansion via ref struct definition.
+                // Temporarily remove the ref struct from visiting so composeParent
+                // doesn't hit the struct-level cycle guard. The ptrVisiting mechanism
+                // handles actual address-level pointer cycles, and virtualPtrRefs
+                // prevents infinite virtual recursion (inner self-referential pointers
+                // are force-collapsed with M_CYCLE for the user to materialize).
+                qulonglong key = pBase ^ (node.refId * kGoldenRatio);
+                if (!state.ptrVisiting.contains(key)) {
+                    state.ptrVisiting.insert(key);
+                    int refIdx = tree.indexOfId(node.refId);
+                    if (refIdx >= 0) {
+                        const Node& ref = tree.nodes[refIdx];
+                        if (ref.kind == NodeKind::Struct || ref.kind == NodeKind::Array) {
+                            bool wasVisiting = state.visiting.remove(node.refId);
+                            state.virtualPtrRefs.insert(node.refId);
+                            composeParent(state, tree, childProv, refIdx,
+                                          depth, pBase, ref.id,
+                                          /*isArrayChild=*/true);
+                            state.virtualPtrRefs.remove(node.refId);
+                            if (wasVisiting) state.visiting.insert(node.refId);
+                        }
+                    }
+                    state.ptrVisiting.remove(key);
                 }
-                state.ptrVisiting.remove(key);
             }
 
             // Footer for pointer fold
@@ -571,7 +596,7 @@ ComposeResult compose(const NodeTree& tree, const Provider& prov, uint64_t viewR
     // Include struct/array names - they now use columnar layout too
     int maxNameLen = kMinNameW;
     for (const Node& node : tree.nodes) {
-        // Skip hex/padding (they show ASCII preview, not name column)
+        // Skip hex (they show ASCII preview, not name column)
         if (isHexPreview(node.kind)) continue;
         maxNameLen = qMax(maxNameLen, (int)node.name.size());
     }
@@ -590,7 +615,7 @@ ComposeResult compose(const NodeTree& tree, const Provider& prov, uint64_t viewR
             const Node& child = tree.nodes[childIdx];
             scopeMaxType = qMax(scopeMaxType, (int)nodeTypeName(child).size());
 
-            // Name width (skip hex/padding, but include containers)
+            // Name width (skip hex, but include containers)
             if (!isHexPreview(child.kind)) {
                 scopeMaxName = qMax(scopeMaxName, (int)child.name.size());
             }
@@ -622,7 +647,7 @@ ComposeResult compose(const NodeTree& tree, const Provider& prov, uint64_t viewR
             const Node& child = tree.nodes[childIdx];
             rootMaxType = qMax(rootMaxType, (int)nodeTypeName(child).size());
 
-            // Name width (skip hex/padding, include containers)
+            // Name width (skip hex, include containers)
             if (!isHexPreview(child.kind)) {
                 rootMaxName = qMax(rootMaxName, (int)child.name.size());
             }

src/controller.cpp

@@ -178,6 +178,14 @@ RcxEditor* RcxController::addSplitEditor(QWidget* parent) {
         editor->applyDocument(m_lastResult);
     }
     updateCommandRow();
+
+    // Eagerly pre-warm the type popup so first click isn't slow (~350ms cold start).
+    if (!m_cachedPopup) {
+        QTimer::singleShot(0, this, [this, editor]() {
+            if (!m_cachedPopup && !m_editors.isEmpty())
+                ensurePopup(editor);
+        });
+    }
     return editor;
 }
 
@@ -226,8 +234,9 @@ void RcxController::connectEditor(RcxEditor* editor) {
         switch (target) {
         case EditTarget::Name: {
             if (text.isEmpty()) break;
+            if (nodeIdx >= m_doc->tree.nodes.size()) break;
             const Node& node = m_doc->tree.nodes[nodeIdx];
-            // ASCII edit on Hex/Padding nodes
+            // ASCII edit on Hex nodes
             if (isHexPreview(node.kind)) {
                 setNodeValue(nodeIdx, subLine, text, /*isAscii=*/true);
             } else {
@@ -427,7 +436,10 @@ void RcxController::connectEditor(RcxEditor* editor) {
                             m_doc->undoStack.clear();
                             m_doc->provider = std::move(provider);
                             m_doc->dataPath.clear();
-                            m_doc->tree.baseAddress = newBase;
+                            if (m_doc->tree.baseAddress == 0)
+                                m_doc->tree.baseAddress = newBase;
+                            else
+                                m_doc->provider->setBase(m_doc->tree.baseAddress);
                             resetSnapshot();
                             emit m_doc->documentChanged();
 
@@ -602,7 +614,7 @@ void RcxController::refresh() {
 
             if (isHexPreview(node.kind)) {
                 // Per-byte tracking for hex preview nodes
-                int lineOff = (node.kind == NodeKind::Padding) ? lm.subLine * 8 : 0;
+                int lineOff = 0;
                 int byteCount = lm.lineByteCount;
                 for (int b = 0; b < byteCount; b++) {
                     if (m_changedOffsets.contains(offset + lineOff + b)) {
@@ -624,6 +636,39 @@ void RcxController::refresh() {
         }
     }
 
+    // Update value history and compute heat levels
+    // Only run when a live provider is attached (not for static file/buffer sources)
+    {
+        const Provider* prov = nullptr;
+        if (m_snapshotProv && m_snapshotProv->isLive())
+            prov = m_snapshotProv.get();
+        else if (m_doc->provider && m_doc->provider->isValid() && m_doc->provider->isLive())
+            prov = m_doc->provider.get();
+
+        if (prov) {
+            for (auto& lm : m_lastResult.meta) {
+                if (lm.nodeIdx < 0 || lm.nodeIdx >= m_doc->tree.nodes.size()) continue;
+                if (isSyntheticLine(lm) || lm.isContinuation) continue;
+                if (lm.lineKind != LineKind::Field) continue;
+
+                const Node& node = m_doc->tree.nodes[lm.nodeIdx];
+                // Skip containers — they don't have scalar values
+                if (node.kind == NodeKind::Struct || node.kind == NodeKind::Array) continue;
+
+                int64_t nodeOff = m_doc->tree.computeOffset(lm.nodeIdx);
+                uint64_t addr = static_cast<uint64_t>(nodeOff); // provider-relative
+                int sz = node.byteSize();
+                if (sz <= 0 || !prov->isReadable(addr, sz)) continue;
+
+                QString val = fmt::readValue(node, *prov, addr, lm.subLine);
+                if (!val.isEmpty()) {
+                    m_valueHistory[lm.nodeId].record(val);
+                    lm.heatLevel = m_valueHistory[lm.nodeId].heatLevel();
+                }
+            }
+        }
+    }
+
     // Prune stale selections (nodes removed by undo/redo/delete)
     QSet<uint64_t> valid;
     for (uint64_t id : m_selIds) {
@@ -647,13 +692,16 @@ void RcxController::refresh() {
 
     for (auto* editor : m_editors) {
         editor->setCustomTypeNames(customTypes);
+        editor->setValueHistoryRef(&m_valueHistory);
         ViewState vs = editor->saveViewState();
         editor->applyDocument(m_lastResult);
         editor->restoreViewState(vs);
     }
-    applySelectionOverlays();
+    // Text-modifying passes first (command row replaces line 0 text),
+    // then overlays last so hover indicators survive the refresh.
     pushSavedSourcesToEditors();
     updateCommandRow();
+    applySelectionOverlays();
 }
 
 void RcxController::changeNodeKind(int nodeIdx, NodeKind newKind) {
@@ -799,43 +847,74 @@ void RcxController::materializeRefChildren(int nodeIdx) {
     if (nodeIdx < 0 || nodeIdx >= m_doc->tree.nodes.size()) return;
     auto& tree = m_doc->tree;
 
-    // Snapshot values before addNode invalidates references
-    const uint64_t parentId  = tree.nodes[nodeIdx].id;
-    const uint64_t refId     = tree.nodes[nodeIdx].refId;
+    // Snapshot values before any mutation invalidates references
+    const uint64_t parentId   = tree.nodes[nodeIdx].id;
+    const uint64_t refId      = tree.nodes[nodeIdx].refId;
     const NodeKind parentKind = tree.nodes[nodeIdx].kind;
     const QString  parentName = tree.nodes[nodeIdx].name;
 
     if (refId == 0) return;
     if (!tree.childrenOf(parentId).isEmpty()) return;  // already materialized
 
-    // Clone all children of the referenced struct as real children of this struct
+    // Collect children to clone (copy by value to avoid reference invalidation)
     QVector<int> refChildren = tree.childrenOf(refId);
+    if (refChildren.isEmpty()) return;
+
+    QVector<Node> clones;
+    clones.reserve(refChildren.size());
     for (int ci : refChildren) {
-        Node copy = tree.nodes[ci];
-        copy.id = 0;               // auto-assign new ID
+        Node copy = tree.nodes[ci];  // copy by value before any mutation
+        copy.id = tree.reserveId();
         copy.parentId = parentId;
-        copy.collapsed = true;     // start collapsed
-        tree.addNode(copy);
+        copy.collapsed = true;
+        clones.append(copy);
+    }
+
+    // Wrap all mutations in an undo macro
+    bool wasSuppressed = m_suppressRefresh;
+    m_suppressRefresh = true;
+    m_doc->undoStack.beginMacro(QStringLiteral("Materialize ref children"));
+
+    for (const Node& clone : clones) {
+        m_doc->undoStack.push(new RcxCommand(this,
+            cmd::Insert{clone, {}}));
     }
-    tree.invalidateIdCache();
 
     // Auto-expand the self-referential child (the one that was the cycle)
     // so the user gets expand in a single click
-    QVector<int> newChildren = tree.childrenOf(parentId);
-    for (int ci : newChildren) {
-        auto& c = tree.nodes[ci];
-        if (c.kind == parentKind && c.name == parentName && c.refId == refId) {
-            c.collapsed = false;
+    for (const Node& clone : clones) {
+        if (clone.kind == parentKind && clone.name == parentName && clone.refId == refId) {
+            m_doc->undoStack.push(new RcxCommand(this,
+                cmd::Collapse{clone.id, true, false}));
             break;
         }
     }
 
-    refresh();
+    m_doc->undoStack.endMacro();
+    m_suppressRefresh = wasSuppressed;
+    if (!m_suppressRefresh) refresh();
 }
 
 void RcxController::applyCommand(const Command& command, bool isUndo) {
     auto& tree = m_doc->tree;
 
+    // Clear value history for nodes whose effective offset changed.
+    // When offsets shift (insert/delete/resize), old recorded values came from
+    // a different memory address, so keeping them would show false heat.
+    // Also invalidates any in-flight async read so that stale snapshot data
+    // from before the offset change doesn't re-introduce false heat.
+    auto clearHistoryForAdjs = [&](const QVector<cmd::OffsetAdj>& adjs) {
+        if (adjs.isEmpty()) return;
+        m_refreshGen++;  // discard in-flight async read (stale layout)
+        for (const auto& adj : adjs) {
+            // Clear the adjusted node itself
+            m_valueHistory.remove(adj.nodeId);
+            // Clear all descendants (their effective address also shifted)
+            for (int ci : tree.subtreeIndices(adj.nodeId))
+                m_valueHistory.remove(tree.nodes[ci].id);
+        }
+    };
+
     std::visit([&](auto&& c) {
         using T = std::decay_t<decltype(c)>;
         if constexpr (std::is_same_v<T, cmd::ChangeKind>) {
@@ -847,6 +926,12 @@ void RcxController::applyCommand(const Command& command, bool isUndo) {
                 if (ai >= 0)
                     tree.nodes[ai].offset = isUndo ? adj.oldOffset : adj.newOffset;
             }
+            // The changed node's value format changed; clear its history.
+            // If offAdjs is empty (same-size change), still bump gen to
+            // discard in-flight reads that would record the old format.
+            if (c.offAdjs.isEmpty()) m_refreshGen++;
+            m_valueHistory.remove(c.nodeId);
+            clearHistoryForAdjs(c.offAdjs);
         } else if constexpr (std::is_same_v<T, cmd::Rename>) {
             int idx = tree.indexOfId(c.nodeId);
             if (idx >= 0)
@@ -875,6 +960,7 @@ void RcxController::applyCommand(const Command& command, bool isUndo) {
                     if (ai >= 0) tree.nodes[ai].offset = adj.newOffset;
                 }
             }
+            clearHistoryForAdjs(c.offAdjs);
         } else if constexpr (std::is_same_v<T, cmd::Remove>) {
             if (isUndo) {
                 // Restore nodes first
@@ -891,13 +977,17 @@ void RcxController::applyCommand(const Command& command, bool isUndo) {
                     int ai = tree.indexOfId(adj.nodeId);
                     if (ai >= 0) tree.nodes[ai].offset = adj.newOffset;
                 }
-                // Remove nodes
+                // Remove nodes and their value history
                 QVector<int> indices = tree.subtreeIndices(c.nodeId);
                 std::sort(indices.begin(), indices.end(), std::greater<int>());
-                for (int idx : indices)
+                for (int idx : indices) {
+                    m_valueHistory.remove(tree.nodes[idx].id);
                     tree.nodes.remove(idx);
+                }
                 tree.invalidateIdCache();
             }
+            // Siblings shifted — their old values are from wrong addresses
+            clearHistoryForAdjs(c.offAdjs);
         } else if constexpr (std::is_same_v<T, cmd::ChangeBase>) {
             tree.baseAddress = isUndo ? c.oldBase : c.newBase;
             qDebug() << "[ChangeBase] tree.baseAddress =" << Qt::hex << tree.baseAddress
@@ -909,11 +999,14 @@ void RcxController::applyCommand(const Command& command, bool isUndo) {
             resetSnapshot();
         } else if constexpr (std::is_same_v<T, cmd::WriteBytes>) {
             const QByteArray& bytes = isUndo ? c.oldBytes : c.newBytes;
-            if (!m_doc->provider->writeBytes(c.addr, bytes))
+            // Write through snapshot (patches pages only on success) or provider directly.
+            // If write fails, the snapshot is NOT patched, so the next compose shows the
+            // real unchanged value — no optimistic visual leak.
+            bool ok = m_snapshotProv
+                ? m_snapshotProv->write(c.addr, bytes.constData(), bytes.size())
+                : m_doc->provider->writeBytes(c.addr, bytes);
+            if (!ok)
                 qWarning() << "WriteBytes failed at address" << QString::number(c.addr, 16);
-            // Patch snapshot so compose sees the new value immediately
-            if (m_snapshotProv)
-                m_snapshotProv->patchPages(c.addr, bytes.constData(), bytes.size());
         } else if constexpr (std::is_same_v<T, cmd::ChangeArrayMeta>) {
             int idx = tree.indexOfId(c.nodeId);
             if (idx >= 0) {
@@ -941,6 +1034,11 @@ void RcxController::applyCommand(const Command& command, bool isUndo) {
             int idx = tree.indexOfId(c.nodeId);
             if (idx >= 0)
                 tree.nodes[idx].offset = isUndo ? c.oldOffset : c.newOffset;
+            // Node and its descendants read from a different address now
+            m_refreshGen++;  // discard in-flight async read (stale layout)
+            m_valueHistory.remove(c.nodeId);
+            for (int ci : tree.subtreeIndices(c.nodeId))
+                m_valueHistory.remove(tree.nodes[ci].id);
         }
     }, command);
 
@@ -996,8 +1094,21 @@ void RcxController::setNodeValue(int nodeIdx, int subLine, const QString& text,
     // Validate write range before pushing command
     if (!m_doc->provider->isReadable(addr, writeSize)) return;
 
+    // Read old bytes before writing (for undo)
     QByteArray oldBytes = m_doc->provider->readBytes(addr, writeSize);
 
+    // Test the write first — don't push a command that will silently fail.
+    // This prevents optimistic visual updates for read-only providers.
+    bool writeOk = m_snapshotProv
+        ? m_snapshotProv->write(addr, newBytes.constData(), newBytes.size())
+        : m_doc->provider->writeBytes(addr, newBytes);
+    if (!writeOk) {
+        qWarning() << "Write failed at address" << QString::number(addr, 16);
+        refresh();  // refresh to show the real unchanged value
+        return;
+    }
+
+    // Write succeeded — push undo command (redo will write again, which is harmless)
     m_doc->undoStack.push(new RcxCommand(this,
         cmd::WriteBytes{addr, oldBytes, newBytes}));
 }
@@ -1093,23 +1204,23 @@ void RcxController::showContextMenu(RcxEditor* editor, int line, int nodeIdx,
         // Quick-convert suggestions for Hex nodes
         bool addedQuickConvert = false;
         if (node.kind == NodeKind::Hex64) {
-            menu.addAction(icon("symbol-numeric.svg"), "Change to uint64_t", [this, nodeId]() {
+            menu.addAction("Change to uint64_t", [this, nodeId]() {
                 int ni = m_doc->tree.indexOfId(nodeId);
                 if (ni >= 0) changeNodeKind(ni, NodeKind::UInt64);
             });
-            menu.addAction(icon("symbol-numeric.svg"), "Change to uint32_t", [this, nodeId]() {
+            menu.addAction("Change to uint32_t", [this, nodeId]() {
                 int ni = m_doc->tree.indexOfId(nodeId);
                 if (ni >= 0) changeNodeKind(ni, NodeKind::UInt32);
             });
             addedQuickConvert = true;
         } else if (node.kind == NodeKind::Hex32) {
-            menu.addAction(icon("symbol-numeric.svg"), "Change to uint32_t", [this, nodeId]() {
+            menu.addAction("Change to uint32_t", [this, nodeId]() {
                 int ni = m_doc->tree.indexOfId(nodeId);
                 if (ni >= 0) changeNodeKind(ni, NodeKind::UInt32);
             });
             addedQuickConvert = true;
         } else if (node.kind == NodeKind::Hex16) {
-            menu.addAction(icon("symbol-numeric.svg"), "Change to int16_t", [this, nodeId]() {
+            menu.addAction("Change to int16_t", [this, nodeId]() {
                 int ni = m_doc->tree.indexOfId(nodeId);
                 if (ni >= 0) changeNodeKind(ni, NodeKind::Int16);
             });
@@ -1119,7 +1230,6 @@ void RcxController::showContextMenu(RcxEditor* editor, int line, int nodeIdx,
             menu.addSeparator();
 
         bool isEditable = node.kind != NodeKind::Struct && node.kind != NodeKind::Array
-                          && node.kind != NodeKind::Padding
                           && m_doc->provider->isWritable();
         if (isEditable) {
             menu.addAction(icon("edit.svg"), "Edit &Value\tEnter", [editor, line]() {
@@ -1135,6 +1245,51 @@ void RcxController::showContextMenu(RcxEditor* editor, int line, int nodeIdx,
             editor->beginInlineEdit(EditTarget::Type, line);
         });
 
+        // Convert to Hex nodes (decompose non-hex types into Hex64/32/16/8)
+        if (!isHexNode(node.kind) && node.kind != NodeKind::Struct && node.kind != NodeKind::Array) {
+            menu.addAction("Convert to &Hex", [this, nodeId]() {
+                int ni = m_doc->tree.indexOfId(nodeId);
+                if (ni < 0) return;
+                const Node& n = m_doc->tree.nodes[ni];
+                int totalSize = n.byteSize();
+                if (totalSize <= 0) return;
+
+                uint64_t parentId = n.parentId;
+                int baseOffset = n.offset;
+
+                bool wasSuppressed = m_suppressRefresh;
+                m_suppressRefresh = true;
+                m_doc->undoStack.beginMacro(QStringLiteral("Convert to Hex"));
+
+                // Remove the original node
+                QVector<Node> subtree;
+                subtree.append(n);
+                m_doc->undoStack.push(new RcxCommand(this,
+                    cmd::Remove{nodeId, subtree, {}}));
+
+                // Insert hex nodes to fill the space (largest first)
+                int padOffset = baseOffset;
+                int gap = totalSize;
+                while (gap > 0) {
+                    NodeKind padKind;
+                    int padSize;
+                    if (gap >= 8)      { padKind = NodeKind::Hex64; padSize = 8; }
+                    else if (gap >= 4) { padKind = NodeKind::Hex32; padSize = 4; }
+                    else if (gap >= 2) { padKind = NodeKind::Hex16; padSize = 2; }
+                    else               { padKind = NodeKind::Hex8;  padSize = 1; }
+
+                    insertNode(parentId, padOffset, padKind,
+                               QString("pad_%1").arg(padOffset, 2, 16, QChar('0')));
+                    padOffset += padSize;
+                    gap -= padSize;
+                }
+
+                m_doc->undoStack.endMacro();
+                m_suppressRefresh = wasSuppressed;
+                if (!m_suppressRefresh) refresh();
+            });
+        }
+
         menu.addSeparator();
 
         if (node.kind == NodeKind::Struct || node.kind == NodeKind::Array) {
@@ -1362,8 +1517,8 @@ void RcxController::handleNodeClick(RcxEditor* source, int line,
         }
     }
 
-    applySelectionOverlays();
     updateCommandRow();
+    applySelectionOverlays();
 
     if (m_selIds.size() == 1) {
         uint64_t sid = *m_selIds.begin();
@@ -1376,8 +1531,8 @@ void RcxController::handleNodeClick(RcxEditor* source, int line,
 void RcxController::clearSelection() {
     m_selIds.clear();
     m_anchorLine = -1;
-    applySelectionOverlays();
     updateCommandRow();
+    applySelectionOverlays();
 }
 
 void RcxController::applySelectionOverlays() {
@@ -1396,17 +1551,17 @@ void RcxController::performRealignment(uint64_t structId, int targetAlign) {
         return tree.nodes[a].offset < tree.nodes[b].offset;
     });
 
-    // Separate into real nodes (non-Padding) and padding nodes
+    // Separate into real nodes (non-hex) and hex filler nodes
     struct NodeInfo { uint64_t id; int offset; int size; };
     QVector<NodeInfo> realNodes;
-    QVector<uint64_t> padIds;
+    QVector<uint64_t> hexIds;
 
     for (int ci : kids) {
         const Node& child = tree.nodes[ci];
         int sz = (child.kind == NodeKind::Struct || child.kind == NodeKind::Array)
             ? tree.structSpan(child.id) : child.byteSize();
-        if (child.kind == NodeKind::Padding)
-            padIds.append(child.id);
+        if (isHexNode(child.kind))
+            hexIds.append(child.id);
         else
             realNodes.append({child.id, child.offset, sz});
     }
@@ -1439,7 +1594,7 @@ void RcxController::performRealignment(uint64_t structId, int targetAlign) {
     }
 
     // Check if anything actually changes
-    if (offChanges.isEmpty() && padIds.isEmpty() && padsNeeded.isEmpty())
+    if (offChanges.isEmpty() && hexIds.isEmpty() && padsNeeded.isEmpty())
         return;
 
     // Apply as undoable macro
@@ -1447,14 +1602,14 @@ void RcxController::performRealignment(uint64_t structId, int targetAlign) {
     m_suppressRefresh = true;
     m_doc->undoStack.beginMacro(QStringLiteral("Realign to %1").arg(targetAlign));
 
-    // 1. Remove all existing Padding nodes (no offset adjustments — we recompute)
-    for (uint64_t pid : padIds) {
-        int idx = tree.indexOfId(pid);
+    // 1. Remove all existing hex filler nodes (no offset adjustments — we recompute)
+    for (uint64_t hid : hexIds) {
+        int idx = tree.indexOfId(hid);
         if (idx < 0) continue;
         QVector<Node> subtree;
         subtree.append(tree.nodes[idx]);
         m_doc->undoStack.push(new RcxCommand(this,
-            cmd::Remove{pid, subtree, {}}));
+            cmd::Remove{hid, subtree, {}}));
     }
 
     // 2. Reposition real nodes
@@ -1463,15 +1618,28 @@ void RcxController::performRealignment(uint64_t structId, int targetAlign) {
             cmd::ChangeOffset{oc.id, oc.oldOff, oc.newOff}));
     }
 
-    // 3. Insert new padding in gaps
+    // 3. Insert hex nodes to fill gaps (largest first for alignment)
     for (const auto& pi : padsNeeded) {
-        Node pad;
-        pad.kind = NodeKind::Padding;
-        pad.parentId = structId;
-        pad.offset = pi.offset;
-        pad.arrayLen = pi.size;
-        pad.id = tree.reserveId();
-        m_doc->undoStack.push(new RcxCommand(this, cmd::Insert{pad}));
+        int padOffset = pi.offset;
+        int gap = pi.size;
+        while (gap > 0) {
+            NodeKind padKind;
+            int padSize;
+            if (gap >= 8)      { padKind = NodeKind::Hex64; padSize = 8; }
+            else if (gap >= 4) { padKind = NodeKind::Hex32; padSize = 4; }
+            else if (gap >= 2) { padKind = NodeKind::Hex16; padSize = 2; }
+            else               { padKind = NodeKind::Hex8;  padSize = 1; }
+
+            Node pad;
+            pad.kind = padKind;
+            pad.parentId = structId;
+            pad.offset = padOffset;
+            pad.name = QString("pad_%1").arg(padOffset, 2, 16, QChar('0'));
+            pad.id = tree.reserveId();
+            m_doc->undoStack.push(new RcxCommand(this, cmd::Insert{pad}));
+            padOffset += padSize;
+            gap -= padSize;
+        }
     }
 
     m_doc->undoStack.endMacro();
@@ -1575,7 +1743,6 @@ void RcxController::showTypePopup(RcxEditor* editor, TypePopupMode mode,
 
     auto addPrimitives = [&](bool enabled, bool excludeStructArrayPad) {
         for (const auto& m : kKindMeta) {
-            if (m.kind == NodeKind::Padding) continue;
             if (excludeStructArrayPad &&
                 (m.kind == NodeKind::Struct || m.kind == NodeKind::Array))
                 continue;
@@ -1606,7 +1773,7 @@ void RcxController::showTypePopup(RcxEditor* editor, TypePopupMode mode,
 
     switch (mode) {
     case TypePopupMode::Root:
-        addPrimitives(/*enabled=*/false, /*excludeStructArrayPad=*/false);
+        // No primitives in Root mode – only project types are valid roots
         addComposites([&](const Node&, const TypeEntry& e) {
             return e.structId == m_viewRootId;
         });
@@ -1710,6 +1877,10 @@ void RcxController::showTypePopup(RcxEditor* editor, TypePopupMode mode,
     });
     connect(popup, &TypeSelectorPopup::createNewTypeRequested,
             this, [this, mode, nodeIdx]() {
+        bool wasSuppressed = m_suppressRefresh;
+        m_suppressRefresh = true;
+        m_doc->undoStack.beginMacro(QStringLiteral("Create new type"));
+
         Node n;
         n.kind = NodeKind::Struct;
         n.name = QString();
@@ -1717,6 +1888,16 @@ void RcxController::showTypePopup(RcxEditor* editor, TypePopupMode mode,
         n.offset = 0;
         n.id = m_doc->tree.reserveId();
         m_doc->undoStack.push(new RcxCommand(this, cmd::Insert{n}));
+
+        // Populate with default hex nodes (8 x Hex64 = 64 bytes)
+        for (int i = 0; i < 8; i++) {
+            insertNode(n.id, i * 8, NodeKind::Hex64,
+                       QString("field_%1").arg(i * 8, 2, 16, QChar('0')));
+        }
+
+        m_doc->undoStack.endMacro();
+        m_suppressRefresh = wasSuppressed;
+
         TypeEntry newEntry;
         newEntry.entryKind = TypeEntry::Composite;
         newEntry.structId  = n.id;
@@ -1735,14 +1916,22 @@ void RcxController::applyTypePopupResult(TypePopupMode mode, int nodeIdx,
     }
 
     if (nodeIdx < 0 || nodeIdx >= m_doc->tree.nodes.size()) return;
-    const Node& node = m_doc->tree.nodes[nodeIdx];
+
+    // BUG-1 fix: Copy needed fields to locals before any mutation.
+    // changeNodeKind() can trigger insertNode() → addNode() → nodes.append(),
+    // which may reallocate the QVector, invalidating any reference into it.
+    const uint64_t nodeId   = m_doc->tree.nodes[nodeIdx].id;
+    const NodeKind nodeKind = m_doc->tree.nodes[nodeIdx].kind;
+    const NodeKind elemKind = m_doc->tree.nodes[nodeIdx].elementKind;
+    const uint64_t nodeRefId = m_doc->tree.nodes[nodeIdx].refId;
+    const int      arrLen   = m_doc->tree.nodes[nodeIdx].arrayLen;
 
     // Parse the full text for modifiers (e.g. "int32_t[10]", "Ball*")
     TypeSpec spec = parseTypeSpec(fullText);
 
     if (mode == TypePopupMode::FieldType) {
         if (entry.entryKind == TypeEntry::Primitive) {
-            if (entry.primitiveKind != node.kind)
+            if (entry.primitiveKind != nodeKind)
                 changeNodeKind(nodeIdx, entry.primitiveKind);
         } else if (entry.entryKind == TypeEntry::Composite) {
             bool wasSuppressed = m_suppressRefresh;
@@ -1751,34 +1940,34 @@ void RcxController::applyTypePopupResult(TypePopupMode mode, int nodeIdx,
 
             if (spec.isPointer) {
                 // Pointer modifier: e.g. "Material*" → Pointer64 + refId
-                if (node.kind != NodeKind::Pointer64)
+                if (nodeKind != NodeKind::Pointer64)
                     changeNodeKind(nodeIdx, NodeKind::Pointer64);
-                int idx = m_doc->tree.indexOfId(node.id);
+                int idx = m_doc->tree.indexOfId(nodeId);
                 if (idx >= 0 && m_doc->tree.nodes[idx].refId != entry.structId)
                     m_doc->undoStack.push(new RcxCommand(this,
-                        cmd::ChangePointerRef{node.id, m_doc->tree.nodes[idx].refId, entry.structId}));
+                        cmd::ChangePointerRef{nodeId, m_doc->tree.nodes[idx].refId, entry.structId}));
 
             } else if (spec.arrayCount > 0) {
                 // Array modifier: e.g. "Material[10]" → Array + Struct element
-                if (node.kind != NodeKind::Array)
+                if (nodeKind != NodeKind::Array)
                     changeNodeKind(nodeIdx, NodeKind::Array);
-                int idx = m_doc->tree.indexOfId(node.id);
+                int idx = m_doc->tree.indexOfId(nodeId);
                 if (idx >= 0) {
                     auto& n = m_doc->tree.nodes[idx];
                     if (n.elementKind != NodeKind::Struct || n.arrayLen != spec.arrayCount)
                         m_doc->undoStack.push(new RcxCommand(this,
-                            cmd::ChangeArrayMeta{node.id, n.elementKind, NodeKind::Struct,
+                            cmd::ChangeArrayMeta{nodeId, n.elementKind, NodeKind::Struct,
                                                  n.arrayLen, spec.arrayCount}));
                     if (n.refId != entry.structId)
                         m_doc->undoStack.push(new RcxCommand(this,
-                            cmd::ChangePointerRef{node.id, n.refId, entry.structId}));
+                            cmd::ChangePointerRef{nodeId, n.refId, entry.structId}));
                 }
 
             } else {
                 // Plain struct: e.g. "Material" → Struct + structTypeName + refId + collapsed
-                if (node.kind != NodeKind::Struct)
+                if (nodeKind != NodeKind::Struct)
                     changeNodeKind(nodeIdx, NodeKind::Struct);
-                int idx = m_doc->tree.indexOfId(node.id);
+                int idx = m_doc->tree.indexOfId(nodeId);
                 if (idx >= 0) {
                     int refIdx = m_doc->tree.indexOfId(entry.structId);
                     QString targetName;
@@ -1789,11 +1978,11 @@ void RcxController::applyTypePopupResult(TypePopupMode mode, int nodeIdx,
                     QString oldTypeName = m_doc->tree.nodes[idx].structTypeName;
                     if (oldTypeName != targetName)
                         m_doc->undoStack.push(new RcxCommand(this,
-                            cmd::ChangeStructTypeName{node.id, oldTypeName, targetName}));
+                            cmd::ChangeStructTypeName{nodeId, oldTypeName, targetName}));
                     // Set refId so compose can expand the referenced struct's children
                     if (m_doc->tree.nodes[idx].refId != entry.structId)
                         m_doc->undoStack.push(new RcxCommand(this,
-                            cmd::ChangePointerRef{node.id, m_doc->tree.nodes[idx].refId, entry.structId}));
+                            cmd::ChangePointerRef{nodeId, m_doc->tree.nodes[idx].refId, entry.structId}));
                     // ChangePointerRef auto-sets collapsed=true when refId != 0
                 }
             }
@@ -1804,33 +1993,32 @@ void RcxController::applyTypePopupResult(TypePopupMode mode, int nodeIdx,
         }
     } else if (mode == TypePopupMode::ArrayElement) {
         if (entry.entryKind == TypeEntry::Primitive) {
-            if (entry.primitiveKind != node.elementKind) {
+            if (entry.primitiveKind != elemKind) {
                 m_doc->undoStack.push(new RcxCommand(this,
-                    cmd::ChangeArrayMeta{node.id,
-                        node.elementKind, entry.primitiveKind,
-                        node.arrayLen, node.arrayLen}));
+                    cmd::ChangeArrayMeta{nodeId,
+                        elemKind, entry.primitiveKind,
+                        arrLen, arrLen}));
             }
         } else if (entry.entryKind == TypeEntry::Composite) {
-            if (node.elementKind != NodeKind::Struct || node.refId != entry.structId) {
+            if (elemKind != NodeKind::Struct || nodeRefId != entry.structId) {
                 m_doc->undoStack.push(new RcxCommand(this,
-                    cmd::ChangeArrayMeta{node.id,
-                        node.elementKind, NodeKind::Struct,
-                        node.arrayLen, node.arrayLen}));
-                if (node.refId != entry.structId) {
+                    cmd::ChangeArrayMeta{nodeId,
+                        elemKind, NodeKind::Struct,
+                        arrLen, arrLen}));
+                if (nodeRefId != entry.structId) {
                     m_doc->undoStack.push(new RcxCommand(this,
-                        cmd::ChangePointerRef{node.id, node.refId, entry.structId}));
+                        cmd::ChangePointerRef{nodeId, nodeRefId, entry.structId}));
                 }
             }
         }
     } else if (mode == TypePopupMode::PointerTarget) {
         // "void" entry → refId 0; composite entry → real structId
         uint64_t realRefId = (entry.entryKind == TypeEntry::Composite) ? entry.structId : 0;
-        if (realRefId != node.refId) {
+        if (realRefId != nodeRefId) {
             m_doc->undoStack.push(new RcxCommand(this,
-                cmd::ChangePointerRef{node.id, node.refId, realRefId}));
+                cmd::ChangePointerRef{nodeId, nodeRefId, realRefId}));
         }
     }
-    refresh();
 }
 
 void RcxController::attachViaPlugin(const QString& providerIdentifier, const QString& target) {
@@ -1854,7 +2042,10 @@ void RcxController::attachViaPlugin(const QString& providerIdentifier, const QSt
     m_doc->undoStack.clear();
     m_doc->provider = std::move(provider);
     m_doc->dataPath.clear();
-    m_doc->tree.baseAddress = newBase;
+    if (m_doc->tree.baseAddress == 0)
+        m_doc->tree.baseAddress = newBase;
+    else
+        m_doc->provider->setBase(m_doc->tree.baseAddress);
     resetSnapshot();
     emit m_doc->documentChanged();
     refresh();
@@ -1897,9 +2088,15 @@ void RcxController::pushSavedSourcesToEditors() {
 
 // ── Auto-refresh ──
 
+void RcxController::setRefreshInterval(int ms) {
+    if (m_refreshTimer)
+        m_refreshTimer->setInterval(qMax(1, ms));
+}
+
 void RcxController::setupAutoRefresh() {
+    int ms = QSettings("Reclass", "Reclass").value("refreshMs", 660).toInt();
     m_refreshTimer = new QTimer(this);
-    m_refreshTimer->setInterval(660);
+    m_refreshTimer->setInterval(qMax(1, ms));
     connect(m_refreshTimer, &QTimer::timeout, this, &RcxController::onRefreshTick);
     m_refreshTimer->start();
 
@@ -1913,11 +2110,11 @@ void RcxController::setupAutoRefresh() {
 void RcxController::collectPointerRanges(
         uint64_t structId, uint64_t memBase,
         int depth, int maxDepth,
-        QSet<uint64_t>& visited,
+        QSet<QPair<uint64_t,uint64_t>>& visited,
         QVector<QPair<uint64_t,int>>& ranges) const
 {
     if (depth >= maxDepth) return;
-    uint64_t key = memBase ^ (structId * 0x9E3779B97F4A7C15ULL);
+    QPair<uint64_t,uint64_t> key{structId, memBase};
     if (visited.contains(key)) return;
     visited.insert(key);
 
@@ -1974,11 +2171,11 @@ void RcxController::onRefreshTick() {
     ranges.append({0, extent});
 
     if (m_snapshotProv) {
-        QSet<uint64_t> visited;
+        QSet<QPair<uint64_t,uint64_t>> visited;
         uint64_t rootId = m_viewRootId;
         if (rootId == 0 && !m_doc->tree.nodes.isEmpty())
             rootId = m_doc->tree.nodes[0].id;
-        collectPointerRanges(rootId, 0, 0, 4, visited, ranges);
+        collectPointerRanges(rootId, 0, 0, 99, visited, ranges);
     }
 
     m_readInFlight = true;
@@ -2094,6 +2291,7 @@ void RcxController::resetSnapshot() {
     m_snapshotProv.reset();
     m_prevPages.clear();
     m_changedOffsets.clear();
+    m_valueHistory.clear();
 }
 
 void RcxController::handleMarginClick(RcxEditor* editor, int margin,

src/controller.h

@@ -7,6 +7,7 @@
 #include <QUndoCommand>
 #include <QTimer>
 #include <QFutureWatcher>
+#include <QPointer>
 #include <memory>
 
 namespace rcx {
@@ -112,6 +113,7 @@ public:
 
     RcxDocument* document() const { return m_doc; }
     void setEditorFont(const QString& fontName);
+    void setRefreshInterval(int ms);
 
     // MCP bridge accessors
     void setSuppressRefresh(bool v) { m_suppressRefresh = v; }
@@ -120,6 +122,9 @@ public:
     int activeSourceIndex() const { return m_activeSourceIdx; }
     void switchSource(int idx) { switchToSavedSource(idx); }
 
+    // Test accessor
+    const QHash<uint64_t, ValueHistory>& valueHistory() const { return m_valueHistory; }
+
 signals:
     void nodeSelected(int nodeIdx);
     void selectionChanged(int count);
@@ -138,7 +143,7 @@ private:
     int m_activeSourceIdx = -1;
 
     // ── Cached type selector popup (avoids ~350ms cold-start on first show) ──
-    TypeSelectorPopup* m_cachedPopup = nullptr;
+    QPointer<TypeSelectorPopup> m_cachedPopup;
 
     // ── Auto-refresh state ──
     using PageMap = QHash<uint64_t, QByteArray>;
@@ -147,6 +152,7 @@ private:
     std::unique_ptr<SnapshotProvider> m_snapshotProv;
     PageMap         m_prevPages;
     QSet<int64_t>   m_changedOffsets;
+    QHash<uint64_t, ValueHistory> m_valueHistory;
     uint64_t        m_refreshGen = 0;
     uint64_t        m_readGen = 0;
     bool            m_readInFlight = false;
@@ -169,7 +175,7 @@ private:
     void resetSnapshot();
     void collectPointerRanges(uint64_t structId, uint64_t memBase,
                               int depth, int maxDepth,
-                              QSet<uint64_t>& visited,
+                              QSet<QPair<uint64_t,uint64_t>>& visited,
                               QVector<QPair<uint64_t,int>>& ranges) const;
 };
 

src/core.h

@@ -8,6 +8,7 @@
 #include <QHash>
 #include <QSet>
 #include <cstdint>
+#include <array>
 #include <memory>
 #include <variant>
 
@@ -27,21 +28,20 @@ enum class NodeKind : uint8_t {
     Pointer32, Pointer64,
     Vec2, Vec3, Vec4, Mat4x4,
     UTF8, UTF16,
-    Padding,
     Struct, Array
 };
 
 } // namespace rcx (temporarily close for qHash)
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-inline uint qHash(rcx::NodeKind key, uint seed = 0) { return ::qHash(static_cast<uint8_t>(key), seed); }
+inline uint qHash(rcx::NodeKind key, uint seed = 0) { return qHash(static_cast<int>(key), seed); }
 #endif
 namespace rcx { // reopen
 
-// ── Kind flags (replaces repeated Hex/Padding switches) ──
+// ── Kind flags (replaces repeated Hex switches) ──
 
 enum KindFlags : uint32_t {
     KF_None       = 0,
-    KF_HexPreview = 1 << 0,  // Hex8..Hex64 + Padding (ASCII+hex layout)
+    KF_HexPreview = 1 << 0,  // Hex8..Hex64 (ASCII+hex layout)
     KF_Container  = 1 << 1,  // Struct/Array
     KF_String     = 1 << 2,  // UTF8/UTF16
     KF_Vector     = 1 << 3,  // Vec2/3/4
@@ -84,7 +84,6 @@ inline constexpr KindMeta kKindMeta[] = {
     {NodeKind::Mat4x4,    "Mat4x4",    "mat4x4",     64,  4,  4, KF_None},
     {NodeKind::UTF8,      "UTF8",      "char[]",      1,  1,  1, KF_String},
     {NodeKind::UTF16,     "UTF16",     "wchar_t[]",   2,  1,  2, KF_String},
-    {NodeKind::Padding,   "Padding",   "pad",         1,  1,  1, KF_HexPreview},
     {NodeKind::Struct,    "Struct",    "struct",      0,  1,  1, KF_Container},
     {NodeKind::Array,     "Array",     "array",       0,  1,  1, KF_Container},
 };
@@ -155,7 +154,6 @@ inline QStringList allTypeNamesForUI(bool stripBrackets = false) {
 
 enum Marker : int {
     M_CONT      = 0,
-    M_PAD       = 1,
     M_PTR0      = 2,
     M_CYCLE     = 3,
     M_ERR       = 4,
@@ -187,9 +185,12 @@ struct Node {
     int byteSize() const {
         switch (kind) {
         case NodeKind::UTF8:    return strLen;
-        case NodeKind::UTF16:   return strLen * 2;
-        case NodeKind::Padding: return qMax(1, arrayLen);
-        case NodeKind::Array:   return arrayLen * sizeForKind(elementKind);
+        case NodeKind::UTF16:   return qMin(strLen, INT_MAX / 2) * 2;
+        case NodeKind::Array: {
+            int elemSz = sizeForKind(elementKind);
+            if (elemSz <= 0) return 0;
+            return qMin(arrayLen, INT_MAX / elemSz) * elemSz;
+        }
         default: return sizeForKind(kind);
         }
     }
@@ -221,8 +222,8 @@ struct Node {
         n.classKeyword = o["classKeyword"].toString();
         n.parentId  = o["parentId"].toString("0").toULongLong();
         n.offset    = o["offset"].toInt(0);
-        n.arrayLen  = o["arrayLen"].toInt(1);
-        n.strLen    = o["strLen"].toInt(64);
+        n.arrayLen  = qBound(1, o["arrayLen"].toInt(1), 1000000);
+        n.strLen    = qBound(1, o["strLen"].toInt(64), 1000000);
         n.collapsed = o["collapsed"].toBool(false);
         n.refId     = o["refId"].toString("0").toULongLong();
         n.elementKind = kindFromString(o["elementKind"].toString("UInt8"));
@@ -405,6 +406,49 @@ struct NodeTree {
 
 };
 
+// ── Value History (ring buffer for heatmap) ──
+
+struct ValueHistory {
+    static constexpr int kCapacity = 10;
+    std::array<QString, kCapacity> values;
+    int count = 0;   // total unique values recorded
+    int head  = 0;   // next write position in ring
+
+    void record(const QString& v) {
+        if (count > 0) {
+            int last = (head + kCapacity - 1) % kCapacity;
+            if (values[last] == v) return;  // no change
+        }
+        values[head] = v;
+        head = (head + 1) % kCapacity;
+        if (count < INT_MAX) count++;
+    }
+
+    int uniqueCount() const { return qMin(count, kCapacity); }
+
+    // 0=static, 1=cold(2 unique), 2=warm(3-4), 3=hot(5+)
+    int heatLevel() const {
+        if (count <= 1) return 0;
+        if (count == 2) return 1;
+        if (count <= 4) return 2;
+        return 3;
+    }
+
+    QString last() const {
+        if (count == 0) return {};
+        return values[(head + kCapacity - 1) % kCapacity];
+    }
+
+    // Iterate from oldest to newest (up to uniqueCount entries)
+    template<typename Fn>
+    void forEach(Fn&& fn) const {
+        int n = uniqueCount();
+        int start = (head + kCapacity - n) % kCapacity;
+        for (int i = 0; i < n; i++)
+            fn(values[(start + i) % kCapacity]);
+    }
+};
+
 // ── LineMeta ──
 
 enum class LineKind : uint8_t {
@@ -439,6 +483,7 @@ struct LineMeta {
     uint64_t offsetAddr     = 0;     // Raw absolute address (for margin toggle)
     uint32_t markerMask     = 0;
     bool     dataChanged    = false;  // true if any byte in this node changed since last refresh
+    int      heatLevel      = 0;     // 0=static, 1=cold, 2=warm, 3=hot (from ValueHistory)
     QVector<int> changedByteIndices;  // Hex preview: which byte indices (0-based) changed on this line
     int      lineByteCount  = 0;     // Hex preview: actual data byte count on this line
     int      effectiveTypeW = 14;  // Per-line type column width used for rendering
@@ -535,7 +580,7 @@ inline ColumnSpan nameSpanFor(const LineMeta& lm, int typeW = kColType, int name
     int ind = kFoldCol + lm.depth * 3;
     int start = ind + typeW + kSepWidth;
 
-    // Hex/Padding: ASCII preview occupies the name column (padded to nameW)
+    // Hex: ASCII preview occupies the name column (padded to nameW)
     if (isHexPreview(lm.nodeKind))
         return {start, start + nameW, true};
 
@@ -547,9 +592,9 @@ inline ColumnSpan valueSpanFor(const LineMeta& lm, int /*lineLength*/, int typeW
         lm.lineKind == LineKind::ArrayElementSeparator) return {};
     int ind = kFoldCol + lm.depth * 3;
 
-    // Hex/Padding uses nameW for ASCII column (same as regular name column)
-    bool isHexPad = isHexPreview(lm.nodeKind);
-    int valWidth = isHexPad ? 23 : kColValue;
+    // Hex uses nameW for ASCII column (same as regular name column)
+    bool isHex = isHexPreview(lm.nodeKind);
+    int valWidth = isHex ? 23 : kColValue;
 
     int prefixW = typeW + nameW + 2 * kSepWidth;
 
@@ -567,8 +612,8 @@ inline ColumnSpan commentSpanFor(const LineMeta& lm, int lineLength, int typeW =
     if (lm.lineKind == LineKind::Header || lm.lineKind == LineKind::Footer) return {};
     int ind = kFoldCol + lm.depth * 3;
 
-    bool isHexPad = isHexPreview(lm.nodeKind);
-    int valWidth = isHexPad ? 23 : kColValue;
+    bool isHex = isHexPreview(lm.nodeKind);
+    int valWidth = isHex ? 23 : kColValue;
 
     int prefixW = typeW + nameW + 2 * kSepWidth;
     int start;

src/editor.cpp

@@ -5,6 +5,7 @@
 #include <Qsci/qsciscintillabase.h>
 #include <Qsci/qscilexercpp.h>
 #include <QVBoxLayout>
+#include <QHBoxLayout>
 #include <QFont>
 #include <QColor>
 #include <QKeyEvent>
@@ -15,19 +16,153 @@
 #include <QMenu>
 #include <QApplication>
 #include <QClipboard>
+#include <QLabel>
+#include <QToolButton>
+#include <QScreen>
+#include <functional>
 #include "themes/thememanager.h"
 
 namespace rcx {
 
+// ── Value history popup (styled like TypeSelectorPopup) ──
+
+class ValueHistoryPopup : public QFrame {
+    uint64_t m_nodeId = 0;
+    bool     m_hasButtons = false;
+    QStringList m_values;
+    QVector<QLabel*> m_labels;
+    std::function<void(const QString&)> m_onSet;
+public:
+    explicit ValueHistoryPopup(QWidget* parent)
+        : QFrame(parent, Qt::ToolTip | Qt::FramelessWindowHint)
+    {
+        setAttribute(Qt::WA_DeleteOnClose, false);
+        setAttribute(Qt::WA_ShowWithoutActivating, true);
+        setFrameShape(QFrame::NoFrame);
+        setAutoFillBackground(true);
+    }
+
+    uint64_t nodeId() const { return m_nodeId; }
+    void setOnSet(std::function<void(const QString&)> fn) { m_onSet = std::move(fn); }
+
+    void populate(uint64_t nodeId, const ValueHistory& hist, const QFont& font,
+                  bool showButtons = false) {
+        QStringList vals;
+        hist.forEach([&](const QString& v) { vals.append(v); });
+
+        if (nodeId == m_nodeId && vals == m_values
+            && showButtons == m_hasButtons && isVisible())
+            return;
+
+        // In-place label update when structure unchanged (avoids flicker)
+        if (nodeId == m_nodeId && vals.size() == m_values.size()
+            && vals.size() == m_labels.size()
+            && showButtons == m_hasButtons && isVisible()) {
+            for (int i = 0; i < vals.size(); i++)
+                m_labels[i]->setText(vals[i]);
+            m_values = vals;
+            return;
+        }
+
+        m_nodeId = nodeId;
+        m_values = vals;
+        m_hasButtons = showButtons;
+        m_labels.clear();
+
+        delete layout();
+        qDeleteAll(findChildren<QWidget*>(QString(), Qt::FindDirectChildrenOnly));
+
+        const auto& theme = ThemeManager::instance().current();
+        QPalette pal;
+        pal.setColor(QPalette::Window, theme.backgroundAlt);
+        pal.setColor(QPalette::WindowText, theme.text);
+        setPalette(pal);
+
+        auto* vbox = new QVBoxLayout(this);
+        vbox->setContentsMargins(8, 6, 8, 6);
+        vbox->setSpacing(2);
+
+        auto* title = new QLabel(QStringLiteral("Previous Values"));
+        QFont bold = font;
+        bold.setBold(true);
+        title->setFont(bold);
+        title->setStyleSheet(QStringLiteral("color: %1;").arg(theme.text.name()));
+        vbox->addWidget(title);
+
+        auto* sep = new QFrame;
+        sep->setFrameShape(QFrame::HLine);
+        sep->setFrameShadow(QFrame::Plain);
+        sep->setFixedHeight(1);
+        QPalette sp; sp.setColor(QPalette::WindowText, theme.border);
+        sep->setPalette(sp);
+        vbox->addWidget(sep);
+
+        for (const QString& v : vals) {
+            auto* row = new QHBoxLayout;
+            row->setContentsMargins(0, 1, 0, 1);
+            row->setSpacing(8);
+
+            auto* label = new QLabel(v);
+            label->setFont(font);
+            label->setStyleSheet(QStringLiteral("color: %1;").arg(theme.syntaxNumber.name()));
+            row->addWidget(label, 1);
+            m_labels.append(label);
+
+            if (showButtons) {
+                auto* setBtn = new QToolButton;
+                setBtn->setText(QStringLiteral("Set"));
+                setBtn->setAutoRaise(true);
+                setBtn->setCursor(Qt::PointingHandCursor);
+                setBtn->setFont(font);
+                setBtn->setStyleSheet(QStringLiteral(
+                    "QToolButton { color: %1; border: none; padding: 1px 4px; }"
+                    "QToolButton:hover { color: %2; background: %3; }")
+                    .arg(theme.textDim.name(), theme.text.name(), theme.hover.name()));
+                QString val = v;
+                QObject::connect(setBtn, &QToolButton::clicked, [this, val]() {
+                    if (m_onSet) m_onSet(val);
+                });
+                row->addWidget(setBtn);
+            }
+            vbox->addLayout(row);
+        }
+
+        adjustSize();
+    }
+
+    void showAt(const QPoint& globalPos) {
+        if (isVisible()) return;
+        QSize sz = sizeHint();
+        QRect screen = QApplication::screenAt(globalPos)
+            ? QApplication::screenAt(globalPos)->availableGeometry()
+            : QRect(0, 0, 1920, 1080);
+        int x = qMin(globalPos.x(), screen.right() - sz.width());
+        int y = globalPos.y();
+        if (y + sz.height() > screen.bottom())
+            y = globalPos.y() - sz.height() - 4;
+        move(x, y);
+        show();
+    }
+
+    void dismiss() {
+        if (isVisible()) hide();
+        m_nodeId = 0;
+        m_values.clear();
+        m_labels.clear();
+    }
+};
+
 static constexpr int IND_EDITABLE   = 8;
 static constexpr int IND_HEX_DIM    = 9;
 static constexpr int IND_BASE_ADDR  = 10;  // Default text color override for command row address
 static constexpr int IND_HOVER_SPAN = 11;  // Blue text on hover (link-like)
 static constexpr int IND_CMD_PILL   = 12;  // Rounded chip behind command row spans
-static constexpr int IND_DATA_CHANGED = 13; // Amber text for changed data values
+static constexpr int IND_HEAT_COLD    = 13; // Heatmap level 1 (changed once)
 static constexpr int IND_CLASS_NAME   = 14; // Teal text for root class name
 static constexpr int IND_HINT_GREEN   = 15; // Green text for hint/comment text
 static constexpr int IND_LOCAL_OFF    = 16; // Dim text for inline local offset in relative mode
+static constexpr int IND_HEAT_WARM    = 17; // Heatmap level 2 (moderate changes)
+static constexpr int IND_HEAT_HOT     = 18; // Heatmap level 3 (frequent changes)
 
 static QString g_fontName = "JetBrains Mono";
 
@@ -69,6 +204,27 @@ RcxEditor::RcxEditor(QWidget* parent) : QWidget(parent) {
     m_sci->setContextMenuPolicy(Qt::CustomContextMenu);
     connect(m_sci, &QWidget::customContextMenuRequested,
             this, [this](const QPoint& pos) {
+        // Right-click on offset margin → show margin mode menu
+        int margin0Width = (int)m_sci->SendScintilla(
+            QsciScintillaBase::SCI_GETMARGINWIDTHN, 0UL, 0L);
+        if (pos.x() < margin0Width) {
+            QMenu menu;
+            auto* actRel = menu.addAction("Relative Offsets (+0x)");
+            auto* actAbs = menu.addAction("Absolute Addresses");
+            actRel->setCheckable(true);
+            actAbs->setCheckable(true);
+            actRel->setChecked(m_relativeOffsets);
+            actAbs->setChecked(!m_relativeOffsets);
+            QAction* chosen = menu.exec(m_sci->mapToGlobal(pos));
+            if (chosen == actRel && !m_relativeOffsets) {
+                m_relativeOffsets = true;
+                reformatMargins();
+            } else if (chosen == actAbs && m_relativeOffsets) {
+                m_relativeOffsets = false;
+                reformatMargins();
+            }
+            return;
+        }
         int line = m_sci->lineAt(pos);
         int nodeIdx = -1;
         int subLine = 0;
@@ -141,7 +297,7 @@ void RcxEditor::setupScintilla() {
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETSTYLE,
                          IND_EDITABLE, 5 /*INDIC_HIDDEN*/);
 
-    // Hex/Padding node dim indicator — overrides text color
+    // Hex node dim indicator — overrides text color
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETSTYLE,
                          IND_HEX_DIM, 17 /*INDIC_TEXTFORE*/);
 
@@ -161,9 +317,13 @@ void RcxEditor::setupScintilla() {
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETUNDER,
                          IND_CMD_PILL, (long)1);
 
-    // Data-changed indicator
+    // Heatmap indicators (cold / warm / hot)
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETSTYLE,
-                         IND_DATA_CHANGED, 17 /*INDIC_TEXTFORE*/);
+                         IND_HEAT_COLD, 17 /*INDIC_TEXTFORE*/);
+    m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETSTYLE,
+                         IND_HEAT_WARM, 17 /*INDIC_TEXTFORE*/);
+    m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETSTYLE,
+                         IND_HEAT_HOT, 17 /*INDIC_TEXTFORE*/);
 
     // Root class name — type color
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETSTYLE,
@@ -241,9 +401,6 @@ void RcxEditor::setupMarkers() {
     // M_CONT (0): continuation line (metadata only, no visual)
     m_sci->markerDefine(QsciScintilla::Invisible, M_CONT);
 
-    // M_PAD (1): padding line (metadata only, no visual)
-    m_sci->markerDefine(QsciScintilla::Invisible, M_PAD);
-
     // M_PTR0 (2): right triangle
     m_sci->markerDefine(QsciScintilla::RightTriangle, M_PTR0);
 
@@ -303,8 +460,13 @@ void RcxEditor::applyTheme(const Theme& theme) {
                          IND_HOVER_SPAN, theme.indHoverSpan);
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETFORE,
                          IND_CMD_PILL, theme.indCmdPill);
+    // Heatmap colors
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETFORE,
-                         IND_DATA_CHANGED, theme.indDataChanged);
+                         IND_HEAT_COLD, theme.indHeatCold);
+    m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETFORE,
+                         IND_HEAT_WARM, theme.indHeatWarm);
+    m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETFORE,
+                         IND_HEAT_HOT, theme.indHeatHot);
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETFORE,
                          IND_CLASS_NAME, theme.syntaxType);
     m_sci->SendScintilla(QsciScintillaBase::SCI_INDICSETFORE,
@@ -366,6 +528,9 @@ void RcxEditor::applyDocument(const ComposeResult& result) {
     if (m_editState.active)
         endInlineEdit();
 
+    // Guard: suppress popup dismiss during setText() which fires synthetic Leave events
+    m_applyingDocument = true;
+
     // Save hover state — setText() triggers viewport Leave events that would clear it
     uint64_t savedHoverId = m_hoveredNodeId;
     int savedHoverLine = m_hoveredLine;
@@ -404,7 +569,7 @@ void RcxEditor::applyDocument(const ComposeResult& result) {
     applyMarkers(result.meta);
     applyFoldLevels(result.meta);
     applyHexDimming(result.meta);
-    applyDataChangedHighlight(result.meta);
+    applyHeatmapHighlight(result.meta);
     applyCommandRowPills();
 
     // Reset hint line - applySelectionOverlay will repaint indicators
@@ -414,6 +579,13 @@ void RcxEditor::applyDocument(const ComposeResult& result) {
     m_hoveredNodeId = savedHoverId;
     m_hoveredLine = savedHoverLine;
     m_hoverInside = savedHoverInside;
+    m_applyingDocument = false;
+
+    // Re-apply hover markers (setText() clears all Scintilla markers).
+    // applyHoverCursor() is NOT called here — it evaluates hitTest() against
+    // composed text that updateCommandRow() will overwrite.  The correct call
+    // happens via applySelectionOverlays() after all text is finalized.
+    applyHoverHighlight();
 }
 
 void RcxEditor::applyMarginText(const QVector<LineMeta>& meta) {
@@ -768,35 +940,52 @@ static QString getLineText(QsciScintilla* sci, int line) {
     return text;
 }
 
-void RcxEditor::applyDataChangedHighlight(const QVector<LineMeta>& meta) {
-    for (int i = 0; i < meta.size(); i++) {
-        if (!meta[i].dataChanged) continue;
-        if (isSyntheticLine(meta[i])) continue;
+void RcxEditor::applyHeatmapHighlight(const QVector<LineMeta>& meta) {
+    static constexpr int heatIndicators[] = { IND_HEAT_COLD, IND_HEAT_WARM, IND_HEAT_HOT };
 
+    for (int i = 0; i < meta.size(); i++) {
         const LineMeta& lm = meta[i];
+        if (isSyntheticLine(lm)) continue;
+
+        int heat = lm.heatLevel;
         int typeW = lm.effectiveTypeW;
         int nameW = lm.effectiveNameW;
 
-        if (isHexPreview(lm.nodeKind) && !lm.changedByteIndices.isEmpty()) {
-            // Per-byte highlighting in ASCII + hex areas
+        if (heat <= 0) continue;
+
+        // Pick the right indicator for this heat level (1→cold, 2→warm, 3→hot)
+        int activeInd = heatIndicators[qBound(0, heat - 1, 2)];
+
+        // For hex preview nodes: per-byte heat coloring on changed bytes
+        if (isHexPreview(lm.nodeKind) && lm.dataChanged && !lm.changedByteIndices.isEmpty()) {
             int ind = kFoldCol + lm.depth * 3;
             int asciiStart = ind + typeW + kSepWidth;
-            // ASCII column is padded to nameW (aligned with value column)
             int hexStart = asciiStart + nameW + kSepWidth;
 
             for (int byteIdx : lm.changedByteIndices) {
-                // Highlight in ASCII area (1 char per byte)
-                fillIndicatorCols(IND_DATA_CHANGED, i, asciiStart + byteIdx, asciiStart + byteIdx + 1);
-                // Highlight in hex area (2 hex chars per byte at position byteIdx*3)
+                fillIndicatorCols(activeInd, i, asciiStart + byteIdx, asciiStart + byteIdx + 1);
                 int hexCol = hexStart + byteIdx * 3;
-                fillIndicatorCols(IND_DATA_CHANGED, i, hexCol, hexCol + 2);
+                fillIndicatorCols(activeInd, i, hexCol, hexCol + 2);
             }
-        } else {
-            // Non-hex nodes: highlight entire value span
-            QString lineText = getLineText(m_sci, i);
-            ColumnSpan vs = valueSpan(lm, lineText.size(), typeW, nameW);
-            if (vs.valid)
-                fillIndicatorCols(IND_DATA_CHANGED, i, vs.start, vs.end);
+            // Clear the other two heat indicators on this line
+            for (int hi : heatIndicators) {
+                if (hi != activeInd)
+                    clearIndicatorLine(hi, i);
+            }
+            continue;
+        }
+
+        // Non-hex nodes: apply heat-level indicator to value span
+        QString lineText = getLineText(m_sci, i);
+        ColumnSpan vs = valueSpan(lm, lineText.size(), typeW, nameW);
+        if (!vs.valid) continue;
+
+        fillIndicatorCols(activeInd, i, vs.start, vs.end);
+
+        // Clear the other two heat indicators on this span to avoid overlap
+        for (int hi : heatIndicators) {
+            if (hi != activeInd)
+                clearIndicatorLine(hi, i);
         }
     }
 }
@@ -1038,9 +1227,6 @@ bool RcxEditor::resolvedSpanFor(int line, EditTarget t,
 
     if (lm->nodeIdx < 0) return false;
 
-    // Padding: reject value editing (hex bytes are display-only)
-    if (t == EditTarget::Value && lm->nodeKind == NodeKind::Padding)
-        return false;
     // Hex nodes: only Type is editable (ASCII preview + hex bytes are display-only)
     if ((t == EditTarget::Name || t == EditTarget::Value) && isHexNode(lm->nodeKind))
         return false;
@@ -1221,9 +1407,6 @@ static bool hitTestTarget(QsciScintilla* sci,
         }
         return false;
     }
-    // Padding nodes: hex bytes are display-only, not editable
-    if (outTarget == EditTarget::Value && lm.nodeKind == NodeKind::Padding)
-        return false;
     // Hex nodes: only Type is editable (ASCII preview + hex bytes are display-only)
     if ((outTarget == EditTarget::Name || outTarget == EditTarget::Value) && isHexNode(lm.nodeKind))
         return false;
@@ -1330,7 +1513,15 @@ bool RcxEditor::eventFilter(QObject* obj, QEvent* event) {
                 // Single-click on editable token of already-selected node → edit
                 int tLine, tCol; EditTarget t;
                 if (hitTestTarget(m_sci, m_meta, me->pos(), tLine, tCol, t)) {
-                    if (alreadySelected && plain) {
+                    // Type/ArrayElementType/PointerTarget open a dismissible popup
+                    // (not inline text edit), so allow on first click without
+                    // requiring the node to be pre-selected.
+                    bool isPopupTarget = (t == EditTarget::Type
+                                       || t == EditTarget::ArrayElementType
+                                       || t == EditTarget::PointerTarget);
+                    if ((alreadySelected || isPopupTarget) && plain) {
+                        if (!alreadySelected)
+                            emit nodeClicked(h.line, h.nodeId, me->modifiers());
                         m_pendingClickNodeId = 0;
                         return beginInlineEdit(t, tLine, tCol);
                     }
@@ -1402,7 +1593,11 @@ bool RcxEditor::eventFilter(QObject* obj, QEvent* event) {
         auto* me = static_cast<QMouseEvent*>(event);
         int margin0Width = (int)m_sci->SendScintilla(
             QsciScintillaBase::SCI_GETMARGINWIDTHN, 0UL, 0L);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
         if ((int)me->position().x() < margin0Width) {
+#else
+        if ((int)me->pos().x() < margin0Width) {
+#endif
             m_relativeOffsets = !m_relativeOffsets;
             reformatMargins();
             return true;
@@ -1451,6 +1646,10 @@ bool RcxEditor::eventFilter(QObject* obj, QEvent* event) {
     }
     // Track mouse position for cursor updates (both edit and non-edit mode)
     if (obj == m_sci->viewport()) {
+        // Ignore synthetic Leave from setText() during document refresh
+        if (m_applyingDocument && event->type() == QEvent::Leave)
+            return true;
+
         if (event->type() == QEvent::MouseMove) {
             m_lastHoverPos = static_cast<QMouseEvent*>(event)->pos();
             m_hoverInside = true;
@@ -1656,6 +1855,9 @@ bool RcxEditor::beginInlineEdit(EditTarget target, int line, int col) {
     m_hoveredNodeId = 0;
     m_hoveredLine = -1;
     applyHoverHighlight();
+    // Dismiss hover popup so it gets recreated with Set buttons once edit starts
+    if (m_historyPopup)
+        static_cast<ValueHistoryPopup*>(m_historyPopup)->dismiss();
     // Clear editable-token color hints (de-emphasize non-active tokens)
     clearIndicatorLine(IND_EDITABLE, m_hintLine);
     m_hintLine = -1;
@@ -1673,9 +1875,6 @@ bool RcxEditor::beginInlineEdit(EditTarget target, int line, int col) {
         (target == EditTarget::BaseAddress || target == EditTarget::Source
          || target == EditTarget::RootClassType || target == EditTarget::RootClassName)))
         return false;
-    // Padding: reject value editing (display-only hex bytes)
-    if (target == EditTarget::Value && lm->nodeKind == NodeKind::Padding)
-        return false;
     // Hex nodes: only Type is editable (ASCII preview + hex bytes are display-only)
     if ((target == EditTarget::Name || target == EditTarget::Value) && isHexNode(lm->nodeKind))
         return false;
@@ -1840,6 +2039,9 @@ bool RcxEditor::beginInlineEdit(EditTarget target, int line, int col) {
             m_sci->viewport()->setCursor(Qt::ArrowCursor);
         });
     }
+    // Refresh hover cursor so value history popup appears with Set buttons immediately
+    if (target == EditTarget::Value)
+        QTimer::singleShot(0, this, &RcxEditor::applyHoverCursor);
     return true;
 }
 
@@ -2192,20 +2394,60 @@ void RcxEditor::applyHoverCursor() {
     if (m_editState.active) {
         if (m_sci->isListActive()) {
             m_sci->viewport()->setCursor(Qt::ArrowCursor);
-            return;
-        }
-        auto h = hitTest(m_lastHoverPos);
-        if (h.line == m_editState.line &&
-            h.col >= m_editState.spanStart && h.col <= editEndCol()) {
-            m_sci->viewport()->setCursor(Qt::IBeamCursor);
         } else {
-            m_sci->viewport()->setCursor(Qt::ArrowCursor);
+            auto h = hitTest(m_lastHoverPos);
+            if (h.line == m_editState.line &&
+                h.col >= m_editState.spanStart && h.col <= editEndCol()) {
+                m_sci->viewport()->setCursor(Qt::IBeamCursor);
+            } else {
+                m_sci->viewport()->setCursor(Qt::ArrowCursor);
+            }
+        }
+        // Value history popup — only during inline value editing on a heated node
+        {
+            bool showPopup = false;
+            if (m_valueHistory && m_editState.target == EditTarget::Value
+                && m_editState.line >= 0 && m_editState.line < m_meta.size()) {
+                const LineMeta& lm = m_meta[m_editState.line];
+                if (lm.heatLevel > 0 && lm.nodeId != 0) {
+                    auto it = m_valueHistory->find(lm.nodeId);
+                    if (it != m_valueHistory->end() && it->uniqueCount() > 1) {
+                        if (!m_historyPopup)
+                            m_historyPopup = new ValueHistoryPopup(this);
+                        auto* popup = static_cast<ValueHistoryPopup*>(m_historyPopup);
+                        popup->setOnSet([this](const QString& val) {
+                            if (!m_editState.active) return;
+                            long endPos = posFromCol(m_sci, m_editState.line, editEndCol());
+                            m_sci->SendScintilla(QsciScintillaBase::SCI_SETSEL,
+                                                 m_editState.posStart, endPos);
+                            QByteArray utf8 = val.toUtf8();
+                            m_sci->SendScintilla(QsciScintillaBase::SCI_REPLACESEL,
+                                                 (uintptr_t)0, utf8.constData());
+                        });
+                        popup->populate(lm.nodeId, *it, editorFont(), true);
+                        int px = (int)m_sci->SendScintilla(QsciScintillaBase::SCI_POINTXFROMPOSITION,
+                                                           (unsigned long)0, m_editState.posStart);
+                        int py = (int)m_sci->SendScintilla(QsciScintillaBase::SCI_POINTYFROMPOSITION,
+                                                           (unsigned long)0, m_editState.posStart);
+                        int lh = (int)m_sci->SendScintilla(QsciScintillaBase::SCI_TEXTHEIGHT,
+                                                           (unsigned long)m_editState.line);
+                        QPoint anchor = m_sci->viewport()->mapToGlobal(QPoint(px, py + lh));
+                        popup->showAt(anchor);
+                        showPopup = true;
+                    }
+                }
+            }
+            if (!showPopup && m_historyPopup && m_historyPopup->isVisible())
+                static_cast<ValueHistoryPopup*>(m_historyPopup)->dismiss();
         }
         return;
     }
 
-    // Mouse left viewport - set Arrow
+    // Mouse left viewport - set Arrow, dismiss history popup
+    // (but not during applyDocument — the Leave is synthetic from setText)
     if (!m_hoverInside) {
+        if (m_historyPopup && !m_applyingDocument)
+            static_cast<ValueHistoryPopup*>(m_historyPopup)->dismiss();
         m_sci->viewport()->setCursor(Qt::ArrowCursor);
         return;
     }
@@ -2294,6 +2536,41 @@ void RcxEditor::applyHoverCursor() {
         m_hoverSpanLines.append(h.line);
     }
 
+    // Value history popup on hover (read-only, no buttons)
+    {
+        bool showPopup = false;
+        if (m_valueHistory && h.line >= 0 && h.line < m_meta.size()) {
+            const LineMeta& lm = m_meta[h.line];
+            if (lm.heatLevel > 0 && lm.nodeId != 0) {
+                auto it = m_valueHistory->find(lm.nodeId);
+                if (it != m_valueHistory->end() && it->uniqueCount() > 1) {
+                    QString lineText = getLineText(m_sci, h.line);
+                    ColumnSpan vs = valueSpan(lm, lineText.size(), lm.effectiveTypeW, lm.effectiveNameW);
+                    if (vs.valid && h.col >= vs.start && h.col < vs.end) {
+                        if (!m_historyPopup)
+                            m_historyPopup = new ValueHistoryPopup(this);
+                        auto* popup = static_cast<ValueHistoryPopup*>(m_historyPopup);
+                        popup->populate(lm.nodeId, *it, editorFont(), false);
+                        long linePos = m_sci->SendScintilla(QsciScintillaBase::SCI_POSITIONFROMLINE,
+                                                            (unsigned long)h.line);
+                        long byteOff = lineText.left(vs.start).toUtf8().size();
+                        int px = (int)m_sci->SendScintilla(QsciScintillaBase::SCI_POINTXFROMPOSITION,
+                                                           (unsigned long)0, linePos + byteOff);
+                        int py = (int)m_sci->SendScintilla(QsciScintillaBase::SCI_POINTYFROMPOSITION,
+                                                           (unsigned long)0, linePos);
+                        int lh = (int)m_sci->SendScintilla(QsciScintillaBase::SCI_TEXTHEIGHT,
+                                                           (unsigned long)h.line);
+                        QPoint anchor = m_sci->viewport()->mapToGlobal(QPoint(px, py + lh));
+                        popup->showAt(anchor);
+                        showPopup = true;
+                    }
+                }
+            }
+        }
+        if (!showPopup && m_historyPopup && m_historyPopup->isVisible())
+            static_cast<ValueHistoryPopup*>(m_historyPopup)->dismiss();
+    }
+
     // Determine cursor shape based on interaction type
     Qt::CursorShape desired = Qt::ArrowCursor;
 

src/editor.h

@@ -54,6 +54,7 @@ public:
     // Custom type names (struct types from the tree) shown in type picker + lexer GlobalClass coloring
     QString textWithMargins() const;
     void setCustomTypeNames(const QStringList& names);
+    void setValueHistoryRef(const QHash<uint64_t, ValueHistory>* ref) { m_valueHistory = ref; }
 
     // Saved sources for quick-switch in source picker
     void setSavedSources(const QVector<SavedSourceDisplay>& sources) { m_savedSourceDisplay = sources; }
@@ -78,7 +79,7 @@ private:
     LayoutInfo        m_layout;  // cached from ComposeResult
 
     // ── Toggle: absolute vs relative offset margin
-    bool m_relativeOffsets = false;
+    bool m_relativeOffsets = true;
 
     int m_marginStyleBase = -1;
     int m_hintLine = -1;
@@ -129,7 +130,12 @@ private:
     // ── Saved sources for quick-switch ──
     QVector<SavedSourceDisplay> m_savedSourceDisplay;
 
+    // ── Value history ref (owned by controller) ──
+    const QHash<uint64_t, ValueHistory>* m_valueHistory = nullptr;
+    QWidget* m_historyPopup = nullptr;  // ValueHistoryPopup (file-local class in editor.cpp)
+
     // ── Reentrancy guards ──
+    bool m_applyingDocument = false;
     bool m_clampingSelection = false;
     bool m_updatingComment = false;
 
@@ -145,7 +151,7 @@ private:
     void applyMarkers(const QVector<LineMeta>& meta);
     void applyFoldLevels(const QVector<LineMeta>& meta);
     void applyHexDimming(const QVector<LineMeta>& meta);
-    void applyDataChangedHighlight(const QVector<LineMeta>& meta);
+    void applyHeatmapHighlight(const QVector<LineMeta>& meta);
     void applyBaseAddressColoring(const QVector<LineMeta>& meta);
     void applyCommandRowPills();
 

src/examples/demo.rcx

@@ -1,344 +0,0 @@
-{
-    "baseAddress": "400000",
-    "nextId": "29",
-    "nodes": [
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "1",
-            "kind": "Struct",
-            "name": "aBall",
-            "offset": 0,
-            "parentId": "0",
-            "refId": "0",
-            "strLen": 64,
-            "structTypeName": "ball"
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "2",
-            "kind": "Hex64",
-            "name": "field_00",
-            "offset": 0,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "3",
-            "kind": "Hex64",
-            "name": "field_08",
-            "offset": 8,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "4",
-            "kind": "Vec4",
-            "name": "position",
-            "offset": 16,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "5",
-            "kind": "Vec3",
-            "name": "velocity",
-            "offset": 32,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "6",
-            "kind": "Hex32",
-            "name": "field_2C",
-            "offset": 44,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "7",
-            "kind": "Float",
-            "name": "speed",
-            "offset": 48,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "8",
-            "kind": "UInt32",
-            "name": "color",
-            "offset": 52,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "9",
-            "kind": "Float",
-            "name": "radius",
-            "offset": 56,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "10",
-            "kind": "Hex32",
-            "name": "field_3C",
-            "offset": 60,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "11",
-            "kind": "Float",
-            "name": "mass",
-            "offset": 64,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "12",
-            "kind": "Hex64",
-            "name": "field_44",
-            "offset": 68,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "13",
-            "kind": "Bool",
-            "name": "bouncy",
-            "offset": 76,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "14",
-            "kind": "Hex8",
-            "name": "field_4D",
-            "offset": 77,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "15",
-            "kind": "Hex16",
-            "name": "field_4E",
-            "offset": 78,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "16",
-            "kind": "UInt32",
-            "name": "color",
-            "offset": 80,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "17",
-            "kind": "Hex32",
-            "name": "field_54",
-            "offset": 84,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "18",
-            "kind": "Hex64",
-            "name": "field_58",
-            "offset": 88,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "19",
-            "kind": "Hex64",
-            "name": "field_60",
-            "offset": 96,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "20",
-            "kind": "Struct",
-            "name": "aPhysics",
-            "offset": 0,
-            "parentId": "0",
-            "refId": "0",
-            "strLen": 64,
-            "structTypeName": "Physics"
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "21",
-            "kind": "Hex64",
-            "name": "field_00",
-            "offset": 0,
-            "parentId": "20",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "22",
-            "kind": "Hex64",
-            "name": "field_08",
-            "offset": 8,
-            "parentId": "20",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "23",
-            "kind": "Hex64",
-            "name": "field_10",
-            "offset": 16,
-            "parentId": "20",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "24",
-            "kind": "Hex64",
-            "name": "field_18",
-            "offset": 24,
-            "parentId": "20",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": false,
-            "elementKind": "UInt8",
-            "id": "25",
-            "kind": "Hex64",
-            "name": "field_20",
-            "offset": 32,
-            "parentId": "20",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 1,
-            "collapsed": true,
-            "elementKind": "UInt8",
-            "id": "26",
-            "kind": "Pointer64",
-            "name": "physics",
-            "offset": 104,
-            "parentId": "1",
-            "refId": "20",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 4,
-            "collapsed": false,
-            "elementKind": "Float",
-            "id": "27",
-            "kind": "Array",
-            "name": "scores",
-            "offset": 112,
-            "parentId": "1",
-            "refId": "0",
-            "strLen": 64
-        },
-        {
-            "arrayLen": 2,
-            "collapsed": false,
-            "elementKind": "Struct",
-            "id": "28",
-            "kind": "Array",
-            "name": "materials",
-            "offset": 128,
-            "parentId": "1",
-            "refId": "20",
-            "strLen": 64
-        }
-    ]
-}

src/export_reclass_xml.cpp

@@ -0,0 +1,204 @@
+#include "export_reclass_xml.h"
+#include <QFile>
+#include <QXmlStreamWriter>
+#include <QHash>
+#include <QVector>
+#include <algorithm>
+
+namespace rcx {
+
+// Reverse type map: NodeKind -> ReClassEx V2016 XML Type integer
+static int xmlTypeForKind(NodeKind kind) {
+    switch (kind) {
+    case NodeKind::Struct:    return 1;   // ClassInstance
+    case NodeKind::Hex32:     return 4;
+    case NodeKind::Hex64:     return 5;
+    case NodeKind::Hex16:     return 6;
+    case NodeKind::Hex8:      return 7;
+    case NodeKind::Pointer64: return 8;   // ClassPointer
+    case NodeKind::Pointer32: return 8;
+    case NodeKind::Int64:     return 9;
+    case NodeKind::Int32:     return 10;
+    case NodeKind::Int16:     return 11;
+    case NodeKind::Int8:      return 12;
+    case NodeKind::Float:     return 13;
+    case NodeKind::Double:    return 14;
+    case NodeKind::UInt32:    return 15;
+    case NodeKind::UInt16:    return 16;
+    case NodeKind::UInt8:     return 17;
+    case NodeKind::UInt64:    return 32;
+    case NodeKind::UTF8:      return 18;
+    case NodeKind::UTF16:     return 19;
+    case NodeKind::Bool:      return 17;  // No native bool in ReClass, map to UInt8
+    case NodeKind::Vec2:      return 22;
+    case NodeKind::Vec3:      return 23;
+    case NodeKind::Vec4:      return 24;
+    case NodeKind::Mat4x4:    return 25;
+    case NodeKind::Array:     return 27;  // ClassInstanceArray
+    }
+    return 7; // fallback to Hex8
+}
+
+static int nodeSizeForExport(const Node& node) {
+    switch (node.kind) {
+    case NodeKind::UTF8:  return node.strLen;
+    case NodeKind::UTF16: return node.strLen * 2;
+    case NodeKind::Array: {
+        int elemSz = sizeForKind(node.elementKind);
+        return node.arrayLen * (elemSz > 0 ? elemSz : 0);
+    }
+    default: return sizeForKind(node.kind);
+    }
+}
+
+// Resolve a struct type name from a node ID
+static QString resolveStructName(const NodeTree& tree, uint64_t refId) {
+    int idx = tree.indexOfId(refId);
+    if (idx < 0) return {};
+    const Node& ref = tree.nodes[idx];
+    if (!ref.structTypeName.isEmpty()) return ref.structTypeName;
+    return ref.name;
+}
+
+bool exportReclassXml(const NodeTree& tree, const QString& filePath, QString* errorMsg) {
+    if (tree.nodes.isEmpty()) {
+        if (errorMsg) *errorMsg = QStringLiteral("No nodes to export");
+        return false;
+    }
+
+    QFile file(filePath);
+    if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
+        if (errorMsg) *errorMsg = QStringLiteral("Cannot open file for writing: ") + filePath;
+        return false;
+    }
+
+    // Build child map
+    QHash<uint64_t, QVector<int>> childMap;
+    for (int i = 0; i < tree.nodes.size(); i++)
+        childMap[tree.nodes[i].parentId].append(i);
+
+    QXmlStreamWriter xml(&file);
+    xml.setAutoFormatting(true);
+    xml.setAutoFormattingIndent(4);
+    xml.writeStartDocument();
+
+    xml.writeStartElement(QStringLiteral("ReClass"));
+    xml.writeComment(QStringLiteral("ReClassEx"));
+
+    // Get root structs
+    QVector<int> roots = childMap.value(0);
+    std::sort(roots.begin(), roots.end(), [&](int a, int b) {
+        return tree.nodes[a].offset < tree.nodes[b].offset;
+    });
+
+    int classCount = 0;
+
+    for (int ri : roots) {
+        const Node& root = tree.nodes[ri];
+        if (root.kind != NodeKind::Struct) continue;
+
+        xml.writeStartElement(QStringLiteral("Class"));
+        xml.writeAttribute(QStringLiteral("Name"), root.name.isEmpty() ? root.structTypeName : root.name);
+        xml.writeAttribute(QStringLiteral("Type"), QStringLiteral("28"));
+        xml.writeAttribute(QStringLiteral("Comment"), QString());
+        xml.writeAttribute(QStringLiteral("Offset"), QStringLiteral("0"));
+        xml.writeAttribute(QStringLiteral("strOffset"), QStringLiteral("0"));
+        xml.writeAttribute(QStringLiteral("Code"), QString());
+
+        // Get children sorted by offset
+        QVector<int> children = childMap.value(root.id);
+        std::sort(children.begin(), children.end(), [&](int a, int b) {
+            return tree.nodes[a].offset < tree.nodes[b].offset;
+        });
+
+        int i = 0;
+        while (i < children.size()) {
+            const Node& child = tree.nodes[children[i]];
+
+            // Collapse consecutive hex nodes into a single Custom node (Type=21)
+            if (isHexNode(child.kind)) {
+                int runStart = child.offset;
+                int runEnd = child.offset + child.byteSize();
+                int j = i + 1;
+                while (j < children.size()) {
+                    const Node& next = tree.nodes[children[j]];
+                    if (!isHexNode(next.kind)) break;
+                    if (next.offset < runEnd) break; // overlap
+                    runEnd = next.offset + next.byteSize();
+                    j++;
+                }
+                int totalSize = runEnd - runStart;
+                xml.writeStartElement(QStringLiteral("Node"));
+                // Use first hex node's name if it's a single node, otherwise generate
+                QString hexName = (j - i == 1 && !child.name.isEmpty()) ? child.name : QString();
+                xml.writeAttribute(QStringLiteral("Name"), hexName);
+                xml.writeAttribute(QStringLiteral("Type"), QStringLiteral("21")); // Custom
+                xml.writeAttribute(QStringLiteral("Size"), QString::number(totalSize));
+                xml.writeAttribute(QStringLiteral("bHidden"), QStringLiteral("false"));
+                xml.writeAttribute(QStringLiteral("Comment"), QString());
+                xml.writeEndElement(); // Node
+                i = j;
+                continue;
+            }
+
+            xml.writeStartElement(QStringLiteral("Node"));
+            xml.writeAttribute(QStringLiteral("Name"), child.name);
+            xml.writeAttribute(QStringLiteral("Type"), QString::number(xmlTypeForKind(child.kind)));
+            xml.writeAttribute(QStringLiteral("Size"), QString::number(nodeSizeForExport(child)));
+            xml.writeAttribute(QStringLiteral("bHidden"), QStringLiteral("false"));
+            xml.writeAttribute(QStringLiteral("Comment"), QString());
+
+            // Pointer with target
+            if ((child.kind == NodeKind::Pointer64 || child.kind == NodeKind::Pointer32) && child.refId != 0) {
+                QString target = resolveStructName(tree, child.refId);
+                if (!target.isEmpty())
+                    xml.writeAttribute(QStringLiteral("Pointer"), target);
+            }
+
+            // Embedded struct instance
+            if (child.kind == NodeKind::Struct) {
+                QString instName = child.structTypeName.isEmpty() ? child.name : child.structTypeName;
+                xml.writeAttribute(QStringLiteral("Instance"), instName);
+            }
+
+            // Array: Total attribute and child <Array> element
+            if (child.kind == NodeKind::Array) {
+                xml.writeAttribute(QStringLiteral("Total"), QString::number(child.arrayLen));
+
+                // Resolve element type name
+                QString elemName;
+                if (child.elementKind == NodeKind::Struct && !child.structTypeName.isEmpty()) {
+                    elemName = child.structTypeName;
+                } else if (child.refId != 0) {
+                    elemName = resolveStructName(tree, child.refId);
+                }
+                if (elemName.isEmpty())
+                    elemName = kindToString(child.elementKind);
+
+                xml.writeStartElement(QStringLiteral("Array"));
+                xml.writeAttribute(QStringLiteral("Name"), elemName);
+                xml.writeAttribute(QStringLiteral("Total"), QString::number(child.arrayLen));
+                xml.writeEndElement(); // Array
+            }
+
+            xml.writeEndElement(); // Node
+            i++;
+        }
+
+        xml.writeEndElement(); // Class
+        classCount++;
+    }
+
+    xml.writeEndElement(); // ReClass
+    xml.writeEndDocument();
+    file.close();
+
+    if (classCount == 0) {
+        if (errorMsg) *errorMsg = QStringLiteral("No struct classes found to export");
+        return false;
+    }
+
+    return true;
+}
+
+} // namespace rcx

src/export_reclass_xml.h

@@ -0,0 +1,10 @@
+#pragma once
+#include "core.h"
+
+namespace rcx {
+
+// Export a NodeTree to ReClass .NET / ReClassEx compatible XML format.
+// Returns true on success; populates errorMsg on failure if non-null.
+bool exportReclassXml(const NodeTree& tree, const QString& filePath, QString* errorMsg = nullptr);
+
+} // namespace rcx

src/format.cpp

@@ -293,7 +293,6 @@ static QString readValueImpl(const Node& node, const Provider& prov,
         line += QStringLiteral("]");
         return line;
     }
-    case NodeKind::Padding:   return display ? hexVal(prov.readU8(addr)) : rawHex(prov.readU8(addr), 2);
     case NodeKind::UTF8: {
         QByteArray bytes = prov.readBytes(addr, node.strLen);
         int end = bytes.indexOf('\0');
@@ -344,21 +343,8 @@ QString fmtNodeLine(const Node& node, const Provider& prov,
         return ind + QString(prefixW, ' ') + val + cmtSuffix;
     }
 
-    // Hex nodes and Padding: hex byte preview (ASCII padded to colName to align with value column)
+    // Hex nodes: hex byte preview (ASCII padded to colName to align with value column)
     if (isHexPreview(node.kind)) {
-        if (node.kind == NodeKind::Padding) {
-            const int totalSz = qMax(1, node.arrayLen);
-            const int lineOff = subLine * 8;
-            const int lineBytes = qMin(8, totalSz - lineOff);
-            QByteArray b = prov.isReadable(addr + lineOff, lineBytes)
-                ? prov.readBytes(addr + lineOff, lineBytes) : QByteArray(lineBytes, '\0');
-            QString ascii = bytesToAscii(b, lineBytes).leftJustified(colName, ' ');
-            QString hex = bytesToHex(b, lineBytes).leftJustified(23, ' '); // 8*3-1
-            if (subLine == 0)
-                return ind + type + SEP + ascii + SEP + hex + cmtSuffix;
-            return ind + QString(colType + (int)SEP.size(), ' ') + ascii + SEP + hex + cmtSuffix;
-        }
-        // Hex8..Hex64: single line, ASCII padded to colName so hex column aligns with value column
         const int sz = sizeForKind(node.kind);
         QByteArray b = prov.isReadable(addr, sz)
             ? prov.readBytes(addr, sz) : QByteArray(sz, '\0');

src/generator.cpp

@@ -50,7 +50,6 @@ static QString cTypeName(NodeKind kind) {
     case NodeKind::Mat4x4:    return QStringLiteral("float");
     case NodeKind::UTF8:      return QStringLiteral("char");
     case NodeKind::UTF16:     return QStringLiteral("wchar_t");
-    case NodeKind::Padding:   return QStringLiteral("uint8_t");
     default:                  return QStringLiteral("uint8_t");
     }
 }
@@ -123,8 +122,6 @@ static QString emitField(GenContext& ctx, const Node& node) {
         return QStringLiteral("    %1 %2[%3];").arg(ctx.cType(NodeKind::UTF8), name).arg(node.strLen) + oc;
     case NodeKind::UTF16:
         return QStringLiteral("    %1 %2[%3];").arg(ctx.cType(NodeKind::UTF16), name).arg(node.strLen) + oc;
-    case NodeKind::Padding:
-        return QStringLiteral("    %1 %2[%3];").arg(ctx.cType(NodeKind::Padding), name).arg(qMax(1, node.arrayLen)) + oc;
     case NodeKind::Pointer32: {
         if (node.refId != 0) {
             int refIdx = tree.indexOfId(node.refId);
@@ -169,7 +166,7 @@ static void emitStructBody(GenContext& ctx, uint64_t structId) {
     auto emitPadRun = [&](int offset, int size) {
         if (size <= 0) return;
         ctx.output += QStringLiteral("    %1 %2[0x%3];%4\n")
-            .arg(ctx.cType(NodeKind::Padding))
+            .arg(QStringLiteral("uint8_t"))
             .arg(ctx.uniquePadName())
             .arg(QString::number(size, 16).toUpper())
             .arg(offsetComment(offset));

src/import_reclass_xml.cpp

@@ -0,0 +1,388 @@
+#include "import_reclass_xml.h"
+#include <QFile>
+#include <QXmlStreamReader>
+#include <QHash>
+#include <QVector>
+#include <QDebug>
+
+namespace rcx {
+
+// ── Version-specific type maps ──
+// Maps XML Type attribute (integer) → NodeKind.
+// Entries with no rcx equivalent use Hex8 as fallback.
+
+enum class XmlVersion { V2013, V2016 };
+
+// 2016 / ReClassEx / MemeClsEx type map (35 entries, index = XML Type value)
+static const struct { int xmlType; NodeKind kind; } kTypeMap2016[] = {
+    // 0: null (unused)
+    { 1,  NodeKind::Struct },     // ClassInstance
+    // 2,3: null
+    { 4,  NodeKind::Hex32 },
+    { 5,  NodeKind::Hex64 },
+    { 6,  NodeKind::Hex16 },
+    { 7,  NodeKind::Hex8 },
+    { 8,  NodeKind::Pointer64 },  // ClassPointer
+    { 9,  NodeKind::Int64 },
+    { 10, NodeKind::Int32 },
+    { 11, NodeKind::Int16 },
+    { 12, NodeKind::Int8 },
+    { 13, NodeKind::Float },
+    { 14, NodeKind::Double },
+    { 15, NodeKind::UInt32 },
+    { 16, NodeKind::UInt16 },
+    { 17, NodeKind::UInt8 },
+    { 18, NodeKind::UTF8 },       // UTF8Text
+    { 19, NodeKind::UTF16 },      // UTF16Text
+    { 20, NodeKind::Pointer64 },  // FunctionPtr
+    { 21, NodeKind::Hex8 },       // Custom (expanded by Size)
+    { 22, NodeKind::Vec2 },
+    { 23, NodeKind::Vec3 },
+    { 24, NodeKind::Vec4 },
+    { 25, NodeKind::Mat4x4 },
+    { 26, NodeKind::Pointer64 },  // VTable
+    { 27, NodeKind::Array },      // ClassInstanceArray
+    // 28: null (used for Class elements, not nodes)
+    { 29, NodeKind::Pointer64 },  // UTF8TextPtr
+    { 30, NodeKind::Pointer64 },  // UTF16TextPtr
+    // 31: BitField → UInt8 fallback
+    { 31, NodeKind::UInt8 },
+    { 32, NodeKind::UInt64 },
+    { 33, NodeKind::Pointer64 },  // Function
+};
+
+// 2013 / ReClass 2011 type map (31 entries)
+static const struct { int xmlType; NodeKind kind; } kTypeMap2013[] = {
+    { 1,  NodeKind::Struct },     // ClassInstance
+    { 4,  NodeKind::Hex32 },
+    { 5,  NodeKind::Hex16 },
+    { 6,  NodeKind::Hex8 },
+    { 7,  NodeKind::Pointer64 },  // ClassPointer
+    { 8,  NodeKind::Int32 },
+    { 9,  NodeKind::Int16 },
+    { 10, NodeKind::Int8 },
+    { 11, NodeKind::Float },
+    { 12, NodeKind::UInt32 },
+    { 13, NodeKind::UInt16 },
+    { 14, NodeKind::UInt8 },
+    { 15, NodeKind::UTF8 },       // UTF8Text
+    { 16, NodeKind::Pointer64 },  // FunctionPtr
+    { 17, NodeKind::Hex8 },       // Custom
+    { 18, NodeKind::Vec2 },
+    { 19, NodeKind::Vec3 },
+    { 20, NodeKind::Vec4 },
+    { 21, NodeKind::Mat4x4 },
+    { 22, NodeKind::Pointer64 },  // VTable
+    { 23, NodeKind::Array },      // ClassInstanceArray
+    { 27, NodeKind::Int64 },
+    { 28, NodeKind::Double },
+    { 29, NodeKind::UTF16 },      // UTF16Text
+    { 30, NodeKind::Array },      // ClassPointerArray
+};
+
+static NodeKind lookupKind(int xmlType, XmlVersion ver) {
+    if (ver == XmlVersion::V2016) {
+        for (const auto& e : kTypeMap2016)
+            if (e.xmlType == xmlType) return e.kind;
+    } else {
+        for (const auto& e : kTypeMap2013)
+            if (e.xmlType == xmlType) return e.kind;
+    }
+    return NodeKind::Hex8; // fallback
+}
+
+// Is this XML type a pointer-like type that uses the "Pointer" attribute?
+static bool isPointerType(int xmlType, XmlVersion ver) {
+    if (ver == XmlVersion::V2016)
+        return xmlType == 8 || xmlType == 20 || xmlType == 26 || xmlType == 29 || xmlType == 30 || xmlType == 33;
+    else
+        return xmlType == 7 || xmlType == 16 || xmlType == 22;
+}
+
+// Is this XML type a ClassInstance (embedded struct)?
+static bool isClassInstanceType(int xmlType, XmlVersion ver) {
+    if (ver == XmlVersion::V2016) return xmlType == 1;
+    else return xmlType == 1;
+}
+
+// Is this XML type a ClassInstanceArray?
+static bool isClassInstanceArrayType(int xmlType, XmlVersion ver) {
+    if (ver == XmlVersion::V2016) return xmlType == 27;
+    else return xmlType == 23 || xmlType == 30;
+}
+
+// Is this XML type a text node?
+static bool isTextType(int xmlType, XmlVersion ver) {
+    if (ver == XmlVersion::V2016) return xmlType == 18 || xmlType == 19;
+    else return xmlType == 15 || xmlType == 29;
+}
+
+// Is this XML type a UTF16 text node?
+static bool isUtf16TextType(int xmlType, XmlVersion ver) {
+    if (ver == XmlVersion::V2016) return xmlType == 19;
+    else return xmlType == 29;
+}
+
+// Is this XML type a Custom node (expanded to hex)?
+static bool isCustomType(int xmlType, XmlVersion ver) {
+    if (ver == XmlVersion::V2016) return xmlType == 21;
+    else return xmlType == 17;
+}
+
+// Deferred pointer resolution entry
+struct PendingRef {
+    uint64_t nodeId;
+    QString  className;
+};
+
+NodeTree importReclassXml(const QString& filePath, QString* errorMsg) {
+    qDebug() << "[ImportXML] Opening file:" << filePath;
+
+    QFile file(filePath);
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        qDebug() << "[ImportXML] ERROR: Cannot open file";
+        if (errorMsg) *errorMsg = QStringLiteral("Cannot open file: ") + filePath;
+        return {};
+    }
+
+    qDebug() << "[ImportXML] File size:" << file.size() << "bytes";
+
+    QXmlStreamReader xml(&file);
+    XmlVersion version = XmlVersion::V2016; // default to 2016 (most common)
+
+    NodeTree tree;
+    tree.baseAddress = 0x00400000;
+
+    // Class name → struct node ID (for pointer resolution)
+    QHash<QString, uint64_t> classIds;
+    // Deferred pointer refs to resolve after all classes are parsed
+    QVector<PendingRef> pendingRefs;
+
+    // Detect version from first comment
+    bool versionDetected = false;
+
+    while (!xml.atEnd()) {
+        xml.readNext();
+
+        // Detect version from XML comments
+        if (!versionDetected && xml.isComment()) {
+            QString comment = xml.text().toString().trimmed();
+            if (comment.contains(QStringLiteral("ReClassEx"), Qt::CaseInsensitive) ||
+                comment.contains(QStringLiteral("MemeClsEx"), Qt::CaseInsensitive) ||
+                comment.contains(QStringLiteral("2016"), Qt::CaseInsensitive) ||
+                comment.contains(QStringLiteral("2015"), Qt::CaseInsensitive)) {
+                version = XmlVersion::V2016;
+            } else if (comment.contains(QStringLiteral("2013"), Qt::CaseInsensitive) ||
+                       comment.contains(QStringLiteral("2011"), Qt::CaseInsensitive)) {
+                version = XmlVersion::V2013;
+            }
+            // else keep default V2016
+            versionDetected = true;
+            qDebug() << "[ImportXML] Detected version:" << (version == XmlVersion::V2016 ? "V2016" : "V2013");
+        }
+
+        if (!xml.isStartElement()) continue;
+
+        if (xml.name() == QStringLiteral("Class")) {
+            // Parse a class element into a root Struct node
+            QString className = xml.attributes().value(QStringLiteral("Name")).toString();
+            QString strOffset = xml.attributes().value(QStringLiteral("strOffset")).toString();
+
+            // Create root struct node (collapsed by default for large files)
+            Node structNode;
+            structNode.kind = NodeKind::Struct;
+            structNode.name = className;
+            structNode.structTypeName = className;
+            structNode.parentId = 0; // root level
+            structNode.offset = 0;
+            structNode.collapsed = true;
+
+            int structIdx = tree.addNode(structNode);
+            uint64_t structId = tree.nodes[structIdx].id;
+            classIds[className] = structId;
+            qDebug() << "[ImportXML] Class:" << className << "id:" << structId;
+
+            // Parse child Node elements
+            int childOffset = 0;
+            while (!xml.atEnd()) {
+                xml.readNext();
+
+                if (xml.isEndElement() && xml.name() == QStringLiteral("Class"))
+                    break;
+
+                if (!xml.isStartElement() || xml.name() != QStringLiteral("Node"))
+                    continue;
+
+                int xmlType = xml.attributes().value(QStringLiteral("Type")).toInt();
+                QString nodeName = xml.attributes().value(QStringLiteral("Name")).toString();
+                int nodeSize = xml.attributes().value(QStringLiteral("Size")).toInt();
+                QString ptrClass = xml.attributes().value(QStringLiteral("Pointer")).toString();
+                QString instClass = xml.attributes().value(QStringLiteral("Instance")).toString();
+
+                qDebug() << "[ImportXML]   Node:" << nodeName << "type:" << xmlType
+                         << "size:" << nodeSize << "ptr:" << ptrClass << "inst:" << instClass;
+
+                // Handle Custom type: expand to appropriate hex nodes
+                if (isCustomType(xmlType, version) && nodeSize > 0) {
+                    // Pick best-fit hex kind
+                    NodeKind hexKind;
+                    int hexSize;
+                    if (nodeSize >= 8 && nodeSize % 8 == 0) {
+                        hexKind = NodeKind::Hex64; hexSize = 8;
+                    } else if (nodeSize >= 4 && nodeSize % 4 == 0) {
+                        hexKind = NodeKind::Hex32; hexSize = 4;
+                    } else if (nodeSize >= 2 && nodeSize % 2 == 0) {
+                        hexKind = NodeKind::Hex16; hexSize = 2;
+                    } else {
+                        hexKind = NodeKind::Hex8; hexSize = 1;
+                    }
+                    int count = nodeSize / hexSize;
+                    for (int i = 0; i < count; i++) {
+                        Node n;
+                        n.kind = hexKind;
+                        n.name = (count == 1) ? nodeName : QString();
+                        n.parentId = structId;
+                        n.offset = childOffset;
+                        tree.addNode(n);
+                        childOffset += hexSize;
+                    }
+                    continue;
+                }
+
+                NodeKind kind = lookupKind(xmlType, version);
+
+                // Handle ClassInstanceArray: read child <Array> element
+                if (isClassInstanceArrayType(xmlType, version)) {
+                    qDebug() << "[ImportXML]     -> ClassInstanceArray";
+                    int total = xml.attributes().value(QStringLiteral("Total")).toInt();
+                    if (total <= 0)
+                        total = xml.attributes().value(QStringLiteral("Count")).toInt();
+                    if (total <= 0) total = 1;
+
+                    // Read child <Array> element for class name
+                    QString arrayClassName;
+                    while (!xml.atEnd()) {
+                        xml.readNext();
+                        if (xml.isEndElement() && xml.name() == QStringLiteral("Node"))
+                            break;
+                        if (xml.isStartElement() && xml.name() == QStringLiteral("Array")) {
+                            arrayClassName = xml.attributes().value(QStringLiteral("Name")).toString();
+                            int arrayTotal = xml.attributes().value(QStringLiteral("Total")).toInt();
+                            if (arrayTotal <= 0)
+                                arrayTotal = xml.attributes().value(QStringLiteral("Count")).toInt();
+                            if (arrayTotal > 0) total = arrayTotal;
+                        }
+                    }
+
+                    // Create an Array node wrapping Struct elements
+                    Node arrNode;
+                    arrNode.kind = NodeKind::Array;
+                    arrNode.name = nodeName;
+                    arrNode.parentId = structId;
+                    arrNode.offset = childOffset;
+                    arrNode.arrayLen = total;
+                    arrNode.elementKind = NodeKind::Struct;
+                    if (!arrayClassName.isEmpty())
+                        arrNode.structTypeName = arrayClassName;
+                    int arrIdx = tree.addNode(arrNode);
+                    uint64_t arrId = tree.nodes[arrIdx].id;
+
+                    // Defer ref resolution if array references a class
+                    if (!arrayClassName.isEmpty()) {
+                        pendingRefs.append({arrId, arrayClassName});
+                    }
+
+                    childOffset += nodeSize > 0 ? nodeSize : 0;
+                    continue;
+                }
+
+                Node n;
+                n.kind = kind;
+                n.name = nodeName;
+                n.parentId = structId;
+                n.offset = childOffset;
+
+                // Handle text nodes
+                if (isTextType(xmlType, version)) {
+                    if (isUtf16TextType(xmlType, version))
+                        n.strLen = qMax(1, nodeSize / 2);
+                    else
+                        n.strLen = qMax(1, nodeSize);
+                }
+
+                // Handle pointer types
+                if (isPointerType(xmlType, version) && !ptrClass.isEmpty()) {
+                    qDebug() << "[ImportXML]     -> Pointer to class:" << ptrClass;
+                    n.collapsed = true; // Start collapsed to avoid recursive expansion freeze
+                    int nodeIdx = tree.addNode(n);
+                    uint64_t nodeId = tree.nodes[nodeIdx].id;
+                    pendingRefs.append({nodeId, ptrClass});
+                    childOffset += nodeSize > 0 ? nodeSize : sizeForKind(kind);
+                    continue;
+                }
+
+                // Handle embedded class instance
+                if (isClassInstanceType(xmlType, version)) {
+                    QString resolvedClass = instClass.isEmpty() ? ptrClass : instClass;
+                    qDebug() << "[ImportXML]     -> ClassInstance:" << resolvedClass;
+                    n.collapsed = true; // Start collapsed to avoid recursive expansion freeze
+                    n.structTypeName = resolvedClass;
+                    if (!n.structTypeName.isEmpty()) {
+                        int nodeIdx = tree.addNode(n);
+                        uint64_t nodeId = tree.nodes[nodeIdx].id;
+                        pendingRefs.append({nodeId, n.structTypeName});
+                    } else {
+                        tree.addNode(n);
+                    }
+                    childOffset += nodeSize > 0 ? nodeSize : 0;
+                    continue;
+                }
+
+                tree.addNode(n);
+                childOffset += nodeSize > 0 ? nodeSize : sizeForKind(kind);
+            }
+        }
+    }
+
+    if (xml.hasError() && xml.error() != QXmlStreamReader::PrematureEndOfDocumentError) {
+        qDebug() << "[ImportXML] XML parse error at line" << xml.lineNumber() << ":" << xml.errorString();
+        if (errorMsg)
+            *errorMsg = QStringLiteral("XML parse error at line %1: %2")
+                .arg(xml.lineNumber())
+                .arg(xml.errorString());
+        return {};
+    }
+
+    qDebug() << "[ImportXML] Parsing complete. Total nodes:" << tree.nodes.size()
+             << "classes:" << classIds.size() << "pending refs:" << pendingRefs.size();
+
+    if (tree.nodes.isEmpty()) {
+        qDebug() << "[ImportXML] ERROR: No classes found";
+        if (errorMsg) *errorMsg = QStringLiteral("No classes found in file");
+        return {};
+    }
+
+    // Resolve deferred pointer/struct references
+    int resolved = 0, unresolved = 0;
+    for (const auto& ref : pendingRefs) {
+        int nodeIdx = tree.indexOfId(ref.nodeId);
+        if (nodeIdx < 0) continue;
+
+        auto it = classIds.find(ref.className);
+        if (it != classIds.end()) {
+            tree.nodes[nodeIdx].refId = it.value();
+            tree.invalidateIdCache();
+            resolved++;
+        } else {
+            qDebug() << "[ImportXML] Unresolved ref:" << ref.className << "for node" << ref.nodeId;
+            unresolved++;
+        }
+    }
+
+    qDebug() << "[ImportXML] Refs resolved:" << resolved << "unresolved:" << unresolved;
+    qDebug() << "[ImportXML] Import complete. Returning tree with" << tree.nodes.size() << "nodes";
+
+    return tree;
+}
+
+} // namespace rcx

src/import_reclass_xml.h

@@ -0,0 +1,11 @@
+#pragma once
+#include "core.h"
+
+namespace rcx {
+
+// Import a ReClass XML file (.reclass, .MemeCls, etc.) into a NodeTree.
+// Supports ReClassEx, MemeClsEx, ReClass 2011/2013/2016 XML formats.
+// Returns an empty NodeTree on failure; populates errorMsg if non-null.
+NodeTree importReclassXml(const QString& filePath, QString* errorMsg = nullptr);
+
+} // namespace rcx

src/import_source.h

@@ -0,0 +1,13 @@
+#pragma once
+#include "core.h"
+
+namespace rcx {
+
+// Import C/C++ struct definitions from source code into a NodeTree.
+// Supports two modes (auto-detected):
+//   1. With comment offsets (// 0xNN) - trusts the offset values
+//   2. Without comment offsets - computes offsets from type sizes
+// Returns an empty NodeTree on failure; populates errorMsg if non-null.
+NodeTree importFromSource(const QString& sourceCode, QString* errorMsg = nullptr);
+
+} // namespace rcx

src/main.cpp

@@ -1,5 +1,8 @@
 #include "mainwindow.h"
 #include "generator.h"
+#include "import_reclass_xml.h"
+#include "import_source.h"
+#include "export_reclass_xml.h"
 #include "mcp/mcp_bridge.h"
 #include <QApplication>
 #include <QMainWindow>
@@ -43,6 +46,7 @@
 #include <QDesktopServices>
 #include "themes/thememanager.h"
 #include "themes/themeeditor.h"
+#include "optionsdialog.h"
 
 #ifdef _WIN32
 #include <windows.h>
@@ -63,29 +67,56 @@ static void setDarkTitleBar(QWidget* widget) {
     }
 }
 
+// Guard flag to prevent re-entrant crash inside the handler
+static volatile LONG s_inCrashHandler = 0;
+
 static LONG WINAPI crashHandler(EXCEPTION_POINTERS* ep) {
+    // Prevent re-entrant crash: if we fault inside the handler, skip the
+    // risky dbghelp work and just terminate with what we already printed.
+    if (InterlockedCompareExchange(&s_inCrashHandler, 1, 0) != 0) {
+        fprintf(stderr, "\n(re-entrant fault inside crash handler — aborting)\n");
+        fflush(stderr);
+        return EXCEPTION_EXECUTE_HANDLER;
+    }
+
+    // Phase 1: always-safe output (no allocations, no complex APIs)
     fprintf(stderr, "\n=== UNHANDLED EXCEPTION ===\n");
     fprintf(stderr, "Code : 0x%08lX\n", ep->ExceptionRecord->ExceptionCode);
     fprintf(stderr, "Addr : %p\n", ep->ExceptionRecord->ExceptionAddress);
+#ifdef _M_X64
+    fprintf(stderr, "RIP  : 0x%016llx\n", (unsigned long long)ep->ContextRecord->Rip);
+    fprintf(stderr, "RSP  : 0x%016llx\n", (unsigned long long)ep->ContextRecord->Rsp);
+#else
+    fprintf(stderr, "EIP  : 0x%08lx\n", (unsigned long)ep->ContextRecord->Eip);
+#endif
+    fflush(stderr);
+
+    // Phase 2: attempt symbol resolution + stack walk
+    // Copy context so StackWalk64 can mutate it safely
+    CONTEXT ctxCopy = *ep->ContextRecord;
 
     HANDLE process = GetCurrentProcess();
     HANDLE thread  = GetCurrentThread();
-    SymSetOptions(SYMOPT_LOAD_LINES | SYMOPT_UNDNAME);
-    SymInitialize(process, NULL, TRUE);
+    SymSetOptions(SYMOPT_LOAD_LINES | SYMOPT_UNDNAME | SYMOPT_FAIL_CRITICAL_ERRORS);
+    if (!SymInitialize(process, NULL, TRUE)) {
+        fprintf(stderr, "\n(SymInitialize failed — no stack trace available)\n");
+        fprintf(stderr, "=== END CRASH ===\n");
+        fflush(stderr);
+        return EXCEPTION_EXECUTE_HANDLER;
+    }
 
-    CONTEXT* ctx = ep->ContextRecord;
     STACKFRAME64 frame = {};
     DWORD machineType;
 #ifdef _M_X64
     machineType = IMAGE_FILE_MACHINE_AMD64;
-    frame.AddrPC.Offset    = ctx->Rip;
-    frame.AddrFrame.Offset = ctx->Rbp;
-    frame.AddrStack.Offset = ctx->Rsp;
+    frame.AddrPC.Offset    = ctxCopy.Rip;
+    frame.AddrFrame.Offset = ctxCopy.Rbp;
+    frame.AddrStack.Offset = ctxCopy.Rsp;
 #else
     machineType = IMAGE_FILE_MACHINE_I386;
-    frame.AddrPC.Offset    = ctx->Eip;
-    frame.AddrFrame.Offset = ctx->Ebp;
-    frame.AddrStack.Offset = ctx->Esp;
+    frame.AddrPC.Offset    = ctxCopy.Eip;
+    frame.AddrFrame.Offset = ctxCopy.Ebp;
+    frame.AddrStack.Offset = ctxCopy.Esp;
 #endif
     frame.AddrPC.Mode    = AddrModeFlat;
     frame.AddrFrame.Mode = AddrModeFlat;
@@ -93,7 +124,7 @@ static LONG WINAPI crashHandler(EXCEPTION_POINTERS* ep) {
 
     fprintf(stderr, "\nStack trace:\n");
     for (int i = 0; i < 64; i++) {
-        if (!StackWalk64(machineType, process, thread, &frame, ctx,
+        if (!StackWalk64(machineType, process, thread, &frame, &ctxCopy,
                          NULL, SymFunctionTableAccess64,
                          SymGetModuleBase64, NULL))
             break;
@@ -141,7 +172,9 @@ public:
             if ((w->windowFlags() & Qt::Window) == Qt::Window
                 && !w->property("DarkTitleBar").toBool()) {
                 w->setProperty("DarkTitleBar", true);
+#ifdef _WIN32
                 setDarkTitleBar(w);
+#endif
             }
         }
         return QApplication::notify(receiver, event);
@@ -160,6 +193,13 @@ public:
             s = QSize(s.width() + 24, s.height() + 4);
         return s;
     }
+    int pixelMetric(PixelMetric metric, const QStyleOption* opt,
+                    const QWidget* w) const override {
+        // Kill the 1px frame margin Fusion reserves around QMenu contents
+        if (metric == PM_MenuPanelWidth)
+            return 0;
+        return QProxyStyle::pixelMetric(metric, opt, w);
+    }
     void drawPrimitive(PrimitiveElement elem, const QStyleOption* opt,
                        QPainter* p, const QWidget* w) const override {
         // Kill Fusion's 3D bevel on QMenu — the OS drop shadow is enough
@@ -205,13 +245,13 @@ static void applyGlobalTheme(const rcx::Theme& theme) {
     QPalette pal;
     pal.setColor(QPalette::Window,          theme.background);
     pal.setColor(QPalette::WindowText,      theme.text);
-    pal.setColor(QPalette::Base,            theme.backgroundAlt);
+    pal.setColor(QPalette::Base,            theme.background);
     pal.setColor(QPalette::AlternateBase,   theme.surface);
     pal.setColor(QPalette::Text,            theme.text);
     pal.setColor(QPalette::Button,          theme.button);
     pal.setColor(QPalette::ButtonText,      theme.text);
-    pal.setColor(QPalette::Highlight,       theme.hover);
-    pal.setColor(QPalette::HighlightedText, theme.indHoverSpan);
+    pal.setColor(QPalette::Highlight,       theme.selection);
+    pal.setColor(QPalette::HighlightedText, theme.text);
     pal.setColor(QPalette::ToolTipBase,     theme.backgroundAlt);
     pal.setColor(QPalette::ToolTipText,     theme.text);
     pal.setColor(QPalette::Mid,             theme.border);
@@ -301,6 +341,13 @@ MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent) {
     createMenus();
     createStatusBar();
 
+    // Restore menu bar title case setting (after menus are created)
+    {
+        QSettings s("Reclass", "Reclass");
+        m_titleBar->setMenuBarTitleCase(s.value("menuBarTitleCase", true).toBool());
+        if (s.value("showIcon", false).toBool())
+            m_titleBar->setShowIcon(true);
+    }
 
     // MenuBarStyle is set as app style in main() — covers both QMenuBar and QMenu
 
@@ -310,9 +357,10 @@ MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent) {
     // Load plugins
     m_pluginManager.LoadPlugins();
 
-    // MCP bridge (on by default)
+    // Start MCP bridge
     m_mcp = new McpBridge(this, this);
-    m_mcp->start();
+    if (QSettings("Reclass", "Reclass").value("autoStartMcp", false).toBool())
+        m_mcp->start();
 
     connect(m_mdiArea, &QMdiArea::subWindowActivated,
             this, [this](QMdiSubWindow*) {
@@ -338,33 +386,63 @@ QIcon MainWindow::makeIcon(const QString& svgPath) {
     return QIcon(svgPath);
 }
 
+template < typename...Args >
+inline QAction* Qt5Qt6AddAction(QMenu* menu, const QString &text, const QKeySequence &shortcut, const QIcon &icon, Args&&...args)
+{
+    QAction *result = menu->addAction(icon, text);
+    if (!shortcut.isEmpty())
+        result->setShortcut(shortcut);
+    QObject::connect(result, &QAction::triggered, std::forward<Args>(args)...);
+    return result;
+}
+
 void MainWindow::createMenus() {
     // File
     auto* file = m_titleBar->menuBar()->addMenu("&File");
-    file->addAction("&New", this, &MainWindow::newDocument, QKeySequence::New);
-    file->addAction("New &Tab", this, &MainWindow::newFile, QKeySequence(Qt::CTRL | Qt::Key_T));
-    file->addAction(makeIcon(":/vsicons/folder-opened.svg"), "&Open...", this, &MainWindow::openFile, QKeySequence::Open);
+    Qt5Qt6AddAction(file, "&New",  QKeySequence::New, QIcon(), this, &MainWindow::newDocument);
+    Qt5Qt6AddAction(file, "New &Tab", QKeySequence(Qt::CTRL | Qt::Key_T), QIcon(), this, &MainWindow::newFile);
+    Qt5Qt6AddAction(file, "&Open...", QKeySequence::Open, makeIcon(":/vsicons/folder-opened.svg"), this, &MainWindow::openFile);
     file->addSeparator();
-    file->addAction(makeIcon(":/vsicons/save.svg"), "&Save", this, &MainWindow::saveFile, QKeySequence::Save);
-    file->addAction(makeIcon(":/vsicons/save-as.svg"), "Save &As...", this, &MainWindow::saveFileAs, QKeySequence::SaveAs);
+    Qt5Qt6AddAction(file, "&Save", QKeySequence::Save, makeIcon(":/vsicons/save.svg"), this, &MainWindow::saveFile);
+    Qt5Qt6AddAction(file, "Save &As...", QKeySequence::SaveAs, makeIcon(":/vsicons/save-as.svg"), this, &MainWindow::saveFileAs);
     file->addSeparator();
-    file->addAction(makeIcon(":/vsicons/export.svg"), "Export &C++ Header...", this, &MainWindow::exportCpp);
+    Qt5Qt6AddAction(file, "&Unload Project", QKeySequence(Qt::CTRL | Qt::Key_W), QIcon(), this, &MainWindow::closeFile);
     file->addSeparator();
-    m_mcpAction = file->addAction("Stop &MCP Server", this, &MainWindow::toggleMcp);
+    Qt5Qt6AddAction(file, "Export &C++ Header...", QKeySequence::UnknownKey, makeIcon(":/vsicons/export.svg"), this, &MainWindow::exportCpp);
+    Qt5Qt6AddAction(file, "Export ReClass &XML...", QKeySequence::UnknownKey, QIcon(), this, &MainWindow::exportReclassXmlAction);
+    Qt5Qt6AddAction(file, "Import from &Source...", QKeySequence::UnknownKey, QIcon(), this, &MainWindow::importFromSource);
+    Qt5Qt6AddAction(file, "&Import ReClass XML...", QKeySequence::UnknownKey, QIcon(), this, &MainWindow::importReclassXml);
+    // Examples submenu — scan once at init
+    {
+        QDir exDir(QCoreApplication::applicationDirPath() + "/examples");
+        QStringList rcxFiles = exDir.entryList({"*.rcx"}, QDir::Files, QDir::Name);
+        if (!rcxFiles.isEmpty()) {
+            auto* examples = file->addMenu("&Examples");
+            for (const QString& fn : rcxFiles) {
+                QString fullPath = exDir.absoluteFilePath(fn);
+                examples->addAction(fn, this, [this, fullPath]() { project_open(fullPath); });
+            }
+        }
+    }
     file->addSeparator();
-    file->addAction(makeIcon(":/vsicons/close.svg"), "E&xit", this, &QMainWindow::close, QKeySequence(Qt::Key_Close));
+    const auto itemName = QSettings("Reclass", "Reclass").value("autoStartMcp", false).toBool() ? "Stop &MCP Server" : "Start &MCP Server";
+    m_mcpAction = Qt5Qt6AddAction(file, itemName, QKeySequence::UnknownKey, QIcon(), this, &MainWindow::toggleMcp);
+    file->addSeparator();
+    Qt5Qt6AddAction(file, "&Options...", QKeySequence::UnknownKey, makeIcon(":/vsicons/settings-gear.svg"), this, &MainWindow::showOptionsDialog);
+    file->addSeparator();
+    Qt5Qt6AddAction(file, "E&xit", QKeySequence(Qt::Key_Close), makeIcon(":/vsicons/close.svg"), this, &QMainWindow::close);
 
     // Edit
     auto* edit = m_titleBar->menuBar()->addMenu("&Edit");
-    edit->addAction(makeIcon(":/vsicons/arrow-left.svg"), "&Undo", this, &MainWindow::undo, QKeySequence::Undo);
-    edit->addAction(makeIcon(":/vsicons/arrow-right.svg"), "&Redo", this, &MainWindow::redo, QKeySequence::Redo);
+    Qt5Qt6AddAction(edit, "&Undo", QKeySequence::Undo, makeIcon(":/vsicons/arrow-left.svg"), this, &MainWindow::undo);
+    Qt5Qt6AddAction(edit, "&Redo", QKeySequence::Redo, makeIcon(":/vsicons/arrow-right.svg"), this, &MainWindow::redo);
     edit->addSeparator();
-    edit->addAction("&Type Aliases...", this, &MainWindow::showTypeAliasesDialog);
+    Qt5Qt6AddAction(edit, "&Type Aliases...", QKeySequence::UnknownKey, QIcon(), this, &MainWindow::showTypeAliasesDialog);
 
     // View
     auto* view = m_titleBar->menuBar()->addMenu("&View");
-    view->addAction(makeIcon(":/vsicons/split-horizontal.svg"), "Split &Horizontal", this, &MainWindow::splitView);
-    view->addAction(makeIcon(":/vsicons/chrome-close.svg"), "&Unsplit", this, &MainWindow::unsplitView);
+    Qt5Qt6AddAction(view, "Split &Horizontal", QKeySequence::UnknownKey, makeIcon(":/vsicons/split-horizontal.svg"), this, &MainWindow::splitView);
+    Qt5Qt6AddAction(view, "&Unsplit", QKeySequence::UnknownKey, makeIcon(":/vsicons/chrome-close.svg"), this, &MainWindow::unsplitView);
     view->addSeparator();
     auto* fontMenu = view->addMenu(makeIcon(":/vsicons/text-size.svg"), "&Font");
     auto* fontGroup = new QActionGroup(this);
@@ -399,35 +477,18 @@ void MainWindow::createMenus() {
         });
     }
     themeMenu->addSeparator();
-    themeMenu->addAction("Edit Theme...", this, &MainWindow::editTheme);
+    Qt5Qt6AddAction(themeMenu, "Edit Theme...", QKeySequence::UnknownKey, QIcon(), this, &MainWindow::editTheme);
 
     view->addSeparator();
-    auto* actShowIcon = view->addAction("Show &Icon");
-    actShowIcon->setCheckable(true);
-    actShowIcon->setChecked(settings.value("showIcon", false).toBool());
-    if (actShowIcon->isChecked()) m_titleBar->setShowIcon(true);
-    connect(actShowIcon, &QAction::toggled, this, [this](bool checked) {
-        m_titleBar->setShowIcon(checked);
-        QSettings s("Reclass", "Reclass");
-        s.setValue("showIcon", checked);
-    });
     view->addAction(m_workspaceDock->toggleViewAction());
 
-    // Node
-    auto* node = m_titleBar->menuBar()->addMenu("&Node");
-    node->addAction(makeIcon(":/vsicons/add.svg"), "&Add Field", this, &MainWindow::addNode, QKeySequence(Qt::Key_Insert));
-    node->addAction(makeIcon(":/vsicons/remove.svg"), "&Remove Field", this, &MainWindow::removeNode, QKeySequence::Delete);
-    node->addAction(makeIcon(":/vsicons/symbol-structure.svg"), "Change &Type", this, &MainWindow::changeNodeType, QKeySequence(Qt::Key_T));
-    node->addAction(makeIcon(":/vsicons/edit.svg"), "Re&name", this, &MainWindow::renameNodeAction, QKeySequence(Qt::Key_F2));
-    node->addAction(makeIcon(":/vsicons/files.svg"), "D&uplicate", this, &MainWindow::duplicateNodeAction)->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_D));
-
     // Plugins
     auto* plugins = m_titleBar->menuBar()->addMenu("&Plugins");
-    plugins->addAction("&Manage Plugins...", this, &MainWindow::showPluginsDialog);
+    Qt5Qt6AddAction(plugins, "&Manage Plugins...", QKeySequence::UnknownKey, QIcon(), this, &MainWindow::showPluginsDialog);
 
     // Help
     auto* help = m_titleBar->menuBar()->addMenu("&Help");
-    help->addAction(makeIcon(":/vsicons/question.svg"), "&About Reclass", this, &MainWindow::about);
+    Qt5Qt6AddAction(help, "&About Reclass", QKeySequence::UnknownKey, makeIcon(":/vsicons/question.svg"), this, &MainWindow::about);
 }
 
 void MainWindow::createStatusBar() {
@@ -665,6 +726,7 @@ QMdiSubWindow* MainWindow::createTab(RcxDocument* doc) {
                         sub->setWindowTitle(rootName(it2->doc->tree, it2->ctrl->viewRootId()));
                 }
                 updateWindowTitle();
+                rebuildWorkspaceModel();
             });
     });
 
@@ -682,61 +744,25 @@ QMdiSubWindow* MainWindow::createTab(RcxDocument* doc) {
     return sub;
 }
 
-// Build Ball + Material demo structs into a tree
-static void buildBallDemo(NodeTree& tree) {
-    // Ball struct (128 bytes = 0x80)
-    Node ball;
-    ball.kind = NodeKind::Struct;
-    ball.name = "aBall";
-    ball.structTypeName = "Ball";
-    ball.parentId = 0;
-    ball.offset = 0;
-    int bi = tree.addNode(ball);
-    uint64_t ballId = tree.nodes[bi].id;
+// Build a minimal empty struct for new documents
+static void buildEmptyStruct(NodeTree& tree) {
+    Node root;
+    root.kind = NodeKind::Struct;
+    root.name = "instance";
+    root.structTypeName = "Unnamed";
+    root.parentId = 0;
+    root.offset = 0;
+    int ri = tree.addNode(root);
+    uint64_t rootId = tree.nodes[ri].id;
 
-    { Node n; n.kind = NodeKind::Hex64;  n.name = "field_00";   n.parentId = ballId; n.offset = 0;  tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex64;  n.name = "field_08";   n.parentId = ballId; n.offset = 8;  tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Vec4;   n.name = "position";   n.parentId = ballId; n.offset = 16; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Vec3;   n.name = "velocity";   n.parentId = ballId; n.offset = 32; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex32;  n.name = "field_2C";   n.parentId = ballId; n.offset = 44; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Float;  n.name = "speed";      n.parentId = ballId; n.offset = 48; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::UInt32; n.name = "color";      n.parentId = ballId; n.offset = 52; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Float;  n.name = "radius";     n.parentId = ballId; n.offset = 56; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex32;  n.name = "field_3C";   n.parentId = ballId; n.offset = 60; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Float;  n.name = "mass";       n.parentId = ballId; n.offset = 64; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex64;  n.name = "field_44";   n.parentId = ballId; n.offset = 68; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Bool;   n.name = "bouncy";     n.parentId = ballId; n.offset = 76; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex8;   n.name = "field_4D";   n.parentId = ballId; n.offset = 77; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex16;  n.name = "field_4E";   n.parentId = ballId; n.offset = 78; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::UInt32; n.name = "color";      n.parentId = ballId; n.offset = 80; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex32;  n.name = "field_54";   n.parentId = ballId; n.offset = 84; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex64;  n.name = "field_58";   n.parentId = ballId; n.offset = 88; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex64;  n.name = "field_60";   n.parentId = ballId; n.offset = 96; tree.addNode(n); }
-
-    // Material struct (renamed from Physics, 40 bytes = 0x28)
-    Node mat;
-    mat.kind = NodeKind::Struct;
-    mat.name = "aMaterial";
-    mat.structTypeName = "Material";
-    mat.parentId = 0;
-    mat.offset = 0;
-    int mi = tree.addNode(mat);
-    uint64_t matId = tree.nodes[mi].id;
-
-    { Node n; n.kind = NodeKind::Hex64; n.name = "field_00"; n.parentId = matId; n.offset = 0;  tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex64; n.name = "field_08"; n.parentId = matId; n.offset = 8;  tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex64; n.name = "field_10"; n.parentId = matId; n.offset = 16; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex64; n.name = "field_18"; n.parentId = matId; n.offset = 24; tree.addNode(n); }
-    { Node n; n.kind = NodeKind::Hex64; n.name = "field_20"; n.parentId = matId; n.offset = 32; tree.addNode(n); }
-
-    // Pointer to Material in Ball struct
-    { Node n; n.kind = NodeKind::Pointer64; n.name = "material"; n.parentId = ballId; n.offset = 104; n.refId = matId; n.collapsed = true; tree.addNode(n); }
-
-    // float[4] scores at offset 112
-    { Node n; n.kind = NodeKind::Array; n.name = "scores"; n.parentId = ballId; n.offset = 112; n.elementKind = NodeKind::Float; n.arrayLen = 4; tree.addNode(n); }
-
-    // Material[2] materials at offset 128 (112 + 16 for float[4])
-    { Node n; n.kind = NodeKind::Array; n.name = "materials"; n.parentId = ballId; n.offset = 128; n.elementKind = NodeKind::Struct; n.arrayLen = 2; n.refId = matId; tree.addNode(n); }
+    for (int i = 0; i < 16; i++) {
+        Node n;
+        n.kind = NodeKind::Hex64;
+        n.name = QStringLiteral("field_%1").arg(i * 8, 2, 16, QChar('0'));
+        n.parentId = rootId;
+        n.offset = i * 8;
+        tree.addNode(n);
+    }
 }
 
 void MainWindow::newFile() {
@@ -760,14 +786,12 @@ void MainWindow::newDocument() {
     doc->typeAliases.clear();
     doc->modified = false;
 
-    // Build Ball + Material structs
-    buildBallDemo(doc->tree);
+    buildEmptyStruct(doc->tree);
 
-    // Cross-platform writable buffer, zeroed (256 bytes covers Ball + spare)
     QByteArray data(256, '\0');
     doc->provider = std::make_shared<BufferProvider>(data);
 
-    // Focus on Ball struct
+    // Focus on first struct
     ctrl->setViewRootId(0);
     for (const auto& n : doc->tree.nodes) {
         if (n.parentId == 0 && n.kind == NodeKind::Struct) {
@@ -785,41 +809,22 @@ void MainWindow::newDocument() {
 }
 
 void MainWindow::selfTest() {
-    // Tab 1: Ball demo
-    project_new();
-
-    // Tab 2: Unnamed struct with hex64 fields
-    {
-        auto* doc = new RcxDocument(this);
-        QByteArray data(256, '\0');
-        doc->loadData(data);
-        doc->tree.baseAddress = 0x00400000;
-
-        Node s;
-        s.kind = NodeKind::Struct;
-        s.name = "instance";
-        s.structTypeName = "Unnamed";
-        s.parentId = 0;
-        s.offset = 0;
-        int si = doc->tree.addNode(s);
-        uint64_t sId = doc->tree.nodes[si].id;
-
-        for (int i = 0; i < 16; i++) {
-            Node n;
-            n.kind = NodeKind::Hex64;
-            n.name = QStringLiteral("field_%1").arg(i * 8, 2, 16, QChar('0'));
-            n.parentId = sId;
-            n.offset = i * 8;
-            doc->tree.addNode(n);
-        }
-
-        createTab(doc);
-        rebuildWorkspaceModel();
+    // Auto-open KUSER_SHARED_DATA example if available
+    QString exPath = QCoreApplication::applicationDirPath()
+                     + "/examples/KUSER_SHARED_DATA.rcx";
+    if (QFile::exists(exPath)) {
+        project_open(exPath);
+    } else {
+        project_new();
     }
 
-    // Focus Ball tab
-    if (auto* first = m_mdiArea->subWindowList().value(0))
-        m_mdiArea->setActiveSubWindow(first);
+    // Auto-attach process memory plugin to self
+    auto* ctrl = activeController();
+    if (ctrl) {
+        DWORD pid = GetCurrentProcessId();
+        QString target = QString("%1:Reclass.exe").arg(pid);
+        ctrl->attachViaPlugin(QStringLiteral("processmemory"), target);
+    }
 }
 
 void MainWindow::openFile() {
@@ -834,6 +839,10 @@ void MainWindow::saveFileAs() {
     project_save(nullptr, true);
 }
 
+void MainWindow::closeFile() {
+    project_close();
+}
+
 void MainWindow::addNode() {
     auto* ctrl = activeController();
     if (!ctrl) return;
@@ -1005,6 +1014,13 @@ void MainWindow::applyTheme(const Theme& theme) {
         statusBar()->setPalette(sbPal);
     }
 
+    // Workspace tree: text color matches menu bar
+    if (m_workspaceTree) {
+        QPalette tp = m_workspaceTree->palette();
+        tp.setColor(QPalette::Text, theme.textDim);
+        m_workspaceTree->setPalette(tp);
+    }
+
     // Split pane tab widgets
     for (auto& state : m_tabs) {
         for (auto& pane : state.panes) {
@@ -1024,6 +1040,52 @@ void MainWindow::editTheme() {
     }
 }
 
+// TODO: when adding more and more options, this func becomes very clunky. Fix
+void MainWindow::showOptionsDialog() {
+    auto& tm = ThemeManager::instance();
+    OptionsResult current;
+    current.themeIndex = tm.currentIndex();
+    current.fontName = QSettings("Reclass", "Reclass").value("font", "JetBrains Mono").toString();
+    current.menuBarTitleCase = m_titleBar->menuBarTitleCase();
+    current.showIcon = QSettings("Reclass", "Reclass").value("showIcon", false).toBool();
+    current.safeMode = QSettings("Reclass", "Reclass").value("safeMode", false).toBool();
+    current.autoStartMcp = QSettings("Reclass", "Reclass").value("autoStartMcp", false).toBool();
+    current.refreshMs = QSettings("Reclass", "Reclass").value("refreshMs", 660).toInt();
+
+    OptionsDialog dlg(current, this);
+    if (dlg.exec() != QDialog::Accepted) return; // OptionsDialog doesn't apply anything. Only apply on OK
+
+    auto r = dlg.result();
+
+    if (r.themeIndex != current.themeIndex)
+        tm.setCurrent(r.themeIndex);
+
+    if (r.fontName != current.fontName)
+        setEditorFont(r.fontName);
+
+    if (r.menuBarTitleCase != current.menuBarTitleCase) {
+        m_titleBar->setMenuBarTitleCase(r.menuBarTitleCase);
+        QSettings("Reclass", "Reclass").setValue("menuBarTitleCase", r.menuBarTitleCase);
+    }
+
+    if (r.showIcon != current.showIcon) {
+        m_titleBar->setShowIcon(r.showIcon);
+        QSettings("Reclass", "Reclass").setValue("showIcon", r.showIcon);
+    }
+
+    if (r.safeMode != current.safeMode)
+        QSettings("Reclass", "Reclass").setValue("safeMode", r.safeMode);
+
+    if (r.autoStartMcp != current.autoStartMcp)
+        QSettings("Reclass", "Reclass").setValue("autoStartMcp", r.autoStartMcp);
+
+    if (r.refreshMs != current.refreshMs) {
+        QSettings("Reclass", "Reclass").setValue("refreshMs", r.refreshMs);
+        for (auto& tab : m_tabs)
+            tab.ctrl->setRefreshInterval(r.refreshMs);
+    }
+}
+
 void MainWindow::setEditorFont(const QString& fontName) {
     QSettings settings("Reclass", "Reclass");
     settings.setValue("font", fontName);
@@ -1259,6 +1321,110 @@ void MainWindow::exportCpp() {
     m_statusLabel->setText("Exported to " + QFileInfo(path).fileName());
 }
 
+// ── Export ReClass XML ──
+
+void MainWindow::exportReclassXmlAction() {
+    auto* tab = activeTab();
+    if (!tab) return;
+
+    QString path = QFileDialog::getSaveFileName(this,
+        "Export ReClass XML", {}, "ReClass XML (*.reclass);;All Files (*)");
+    if (path.isEmpty()) return;
+
+    QString error;
+    if (!rcx::exportReclassXml(tab->doc->tree, path, &error)) {
+        QMessageBox::warning(this, "Export Failed",
+            error.isEmpty() ? QStringLiteral("Could not export") : error);
+        return;
+    }
+
+    int classCount = 0;
+    for (const auto& n : tab->doc->tree.nodes)
+        if (n.parentId == 0 && n.kind == NodeKind::Struct) classCount++;
+
+    m_statusLabel->setText(QStringLiteral("Exported %1 classes to %2")
+        .arg(classCount).arg(QFileInfo(path).fileName()));
+}
+
+// ── Import ReClass XML ──
+
+void MainWindow::importReclassXml() {
+    QString filePath = QFileDialog::getOpenFileName(this,
+        "Import ReClass XML", {},
+        "ReClass XML (*.reclass *.MemeCls *.xml);;All Files (*)");
+    if (filePath.isEmpty()) return;
+
+    QString error;
+    NodeTree tree = rcx::importReclassXml(filePath, &error);
+    if (tree.nodes.isEmpty()) {
+        QMessageBox::warning(this, "Import Failed", error.isEmpty()
+            ? QStringLiteral("No data found in file") : error);
+        return;
+    }
+
+    // Count root structs for status message
+    int classCount = 0;
+    for (const auto& n : tree.nodes)
+        if (n.parentId == 0 && n.kind == NodeKind::Struct) classCount++;
+
+    auto* doc = new RcxDocument(this);
+    doc->tree = std::move(tree);
+
+    m_mdiArea->closeAllSubWindows();
+    createTab(doc);
+    rebuildWorkspaceModel();
+    m_statusLabel->setText(QStringLiteral("Imported %1 classes from %2")
+        .arg(classCount).arg(QFileInfo(filePath).fileName()));
+}
+
+// ── Import from Source ──
+
+void MainWindow::importFromSource() {
+    QDialog dlg(this);
+    dlg.setWindowTitle("Import from Source");
+    dlg.resize(700, 600);
+
+    auto* layout = new QVBoxLayout(&dlg);
+
+    auto* sci = new QsciScintilla(&dlg);
+    setupRenderedSci(sci);
+    sci->setReadOnly(false);
+    sci->setMarginWidth(0, "00000");
+    layout->addWidget(sci);
+
+    auto* buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, &dlg);
+    buttons->button(QDialogButtonBox::Ok)->setText("Import");
+    layout->addWidget(buttons);
+
+    connect(buttons, &QDialogButtonBox::accepted, &dlg, &QDialog::accept);
+    connect(buttons, &QDialogButtonBox::rejected, &dlg, &QDialog::reject);
+
+    if (dlg.exec() != QDialog::Accepted) return;
+
+    QString source = sci->text();
+    if (source.trimmed().isEmpty()) return;
+
+    QString error;
+    NodeTree tree = rcx::importFromSource(source, &error);
+    if (tree.nodes.isEmpty()) {
+        QMessageBox::warning(this, "Import Failed", error.isEmpty()
+            ? QStringLiteral("No struct definitions found") : error);
+        return;
+    }
+
+    int classCount = 0;
+    for (const auto& n : tree.nodes)
+        if (n.parentId == 0 && n.kind == NodeKind::Struct) classCount++;
+
+    auto* doc = new RcxDocument(this);
+    doc->tree = std::move(tree);
+
+    m_mdiArea->closeAllSubWindows();
+    createTab(doc);
+    rebuildWorkspaceModel();
+    m_statusLabel->setText(QStringLiteral("Imported %1 classes from source").arg(classCount));
+}
+
 // ── Type Aliases Dialog ──
 
 void MainWindow::showTypeAliasesDialog() {
@@ -1321,13 +1487,11 @@ void MainWindow::showTypeAliasesDialog() {
 QMdiSubWindow* MainWindow::project_new() {
     auto* doc = new RcxDocument(this);
 
-    // Cross-platform writable buffer, zeroed (256 bytes covers Ball struct + spare)
     QByteArray data(256, '\0');
     doc->loadData(data);
     doc->tree.baseAddress = 0x00400000;
 
-    // Build Ball + Material demo structs
-    buildBallDemo(doc->tree);
+    buildEmptyStruct(doc->tree);
 
     auto* sub = createTab(doc);
     rebuildWorkspaceModel();
@@ -1338,16 +1502,57 @@ QMdiSubWindow* MainWindow::project_open(const QString& path) {
     QString filePath = path;
     if (filePath.isEmpty()) {
         filePath = QFileDialog::getOpenFileName(this,
-            "Open Definition", {}, "Reclass (*.rcx);;JSON (*.json);;All (*)");
+            "Open Definition", {},
+            "All Supported (*.rcx *.json *.reclass *.MemeCls *.xml)"
+            ";;Reclass (*.rcx)"
+            ";;JSON (*.json)"
+            ";;ReClass XML (*.reclass *.MemeCls *.xml)"
+            ";;All (*)");
         if (filePath.isEmpty()) return nullptr;
     }
 
+    // Detect if this is an XML-based ReClass file by checking first bytes
+    bool isXml = false;
+    {
+        QFile probe(filePath);
+        if (probe.open(QIODevice::ReadOnly)) {
+            QByteArray head = probe.read(64);
+            isXml = head.trimmed().startsWith("<?xml") || head.trimmed().startsWith("<ReClass")
+                    || head.trimmed().startsWith("<MemeCls");
+        }
+    }
+
+    if (isXml) {
+        QString error;
+        NodeTree tree = rcx::importReclassXml(filePath, &error);
+        if (tree.nodes.isEmpty()) {
+            QMessageBox::warning(this, "Import Failed", error.isEmpty()
+                ? QStringLiteral("No data found in file") : error);
+            return nullptr;
+        }
+        auto* doc = new RcxDocument(this);
+        doc->tree = std::move(tree);
+        m_mdiArea->closeAllSubWindows();
+        auto* sub = createTab(doc);
+        rebuildWorkspaceModel();
+        int classCount = 0;
+        for (const auto& n : doc->tree.nodes)
+            if (n.parentId == 0 && n.kind == NodeKind::Struct) classCount++;
+        m_statusLabel->setText(QStringLiteral("Imported %1 classes from %2")
+            .arg(classCount).arg(QFileInfo(filePath).fileName()));
+        return sub;
+    }
+
     auto* doc = new RcxDocument(this);
     if (!doc->load(filePath)) {
         QMessageBox::warning(this, "Error", "Failed to load: " + filePath);
         delete doc;
         return nullptr;
     }
+
+    // Close all existing tabs so the project replaces the current state
+    m_mdiArea->closeAllSubWindows();
+
     auto* sub = createTab(doc);
     rebuildWorkspaceModel();
     return sub;
@@ -1380,7 +1585,7 @@ void MainWindow::project_close(QMdiSubWindow* sub) {
 // ── Workspace Dock ──
 
 void MainWindow::createWorkspaceDock() {
-    m_workspaceDock = new QDockWidget("Workspace", this);
+    m_workspaceDock = new QDockWidget("Project Tree", this);
     m_workspaceDock->setObjectName("WorkspaceDock");
     m_workspaceDock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
 
@@ -1390,81 +1595,76 @@ void MainWindow::createWorkspaceDock() {
     m_workspaceTree->setModel(m_workspaceModel);
     m_workspaceTree->setHeaderHidden(true);
     m_workspaceTree->setEditTriggers(QAbstractItemView::NoEditTriggers);
+    m_workspaceTree->setExpandsOnDoubleClick(false);
+    m_workspaceTree->setMouseTracking(true);
 
-    // Match editor font
-    {
-        QSettings settings("Reclass", "Reclass");
-        QString fontName = settings.value("font", "JetBrains Mono").toString();
-        QFont f(fontName, 12);
-        f.setFixedPitch(true);
-        m_workspaceTree->setFont(f);
-    }
+    m_workspaceTree->setContextMenuPolicy(Qt::CustomContextMenu);
+    connect(m_workspaceTree, &QWidget::customContextMenuRequested, this, [this](const QPoint& pos) {
+        QModelIndex index = m_workspaceTree->indexAt(pos);
+        if (!index.isValid()) return;
+
+        auto structIdVar = index.data(Qt::UserRole + 1);
+        uint64_t structId = structIdVar.isValid() ? structIdVar.toULongLong() : 0;
+        if (structId == 0 || structId == rcx::kGroupSentinel) return;
+
+        auto subVar = index.data(Qt::UserRole);
+        if (!subVar.isValid()) return;
+        auto* sub = static_cast<QMdiSubWindow*>(subVar.value<void*>());
+        if (!sub || !m_tabs.contains(sub)) return;
+
+        QMenu menu;
+        auto* deleteAction = menu.addAction(QIcon(":/vsicons/remove.svg"), "Delete");
+        if (menu.exec(m_workspaceTree->viewport()->mapToGlobal(pos)) == deleteAction) {
+            auto& tab = m_tabs[sub];
+            int ni = tab.doc->tree.indexOfId(structId);
+            if (ni >= 0) {
+                tab.ctrl->removeNode(ni);
+                rebuildWorkspaceModel();
+            }
+        }
+    });
 
     m_workspaceDock->setWidget(m_workspaceTree);
     addDockWidget(Qt::LeftDockWidgetArea, m_workspaceDock);
     m_workspaceDock->hide();
 
     connect(m_workspaceTree, &QTreeView::doubleClicked, this, [this](const QModelIndex& index) {
-        // Data roles: UserRole=QMdiSubWindow*, UserRole+1=structId, UserRole+2=nodeId
+        auto structIdVar = index.data(Qt::UserRole + 1);
+        uint64_t structId = structIdVar.isValid() ? structIdVar.toULongLong() : 0;
+
+        if (structId == rcx::kGroupSentinel) {
+            // "Project" folder: toggle expand/collapse
+            m_workspaceTree->setExpanded(index, !m_workspaceTree->isExpanded(index));
+            return;
+        }
+
         auto subVar = index.data(Qt::UserRole);
         if (!subVar.isValid()) return;
-
         auto* sub = static_cast<QMdiSubWindow*>(subVar.value<void*>());
         if (!sub || !m_tabs.contains(sub)) return;
 
         m_mdiArea->setActiveSubWindow(sub);
 
-        auto structIdVar = index.data(Qt::UserRole + 1);
-        auto nodeIdVar   = index.data(Qt::UserRole + 2);
-
-        if (structIdVar.isValid()) {
-            // Double-clicked a struct: set as view root
-            uint64_t structId = structIdVar.toULongLong();
-            auto& tree = m_tabs[sub].doc->tree;
-            int ni = tree.indexOfId(structId);
-            if (ni >= 0) tree.nodes[ni].collapsed = false;
-            m_tabs[sub].ctrl->setViewRootId(structId);
-            m_tabs[sub].ctrl->scrollToNodeId(structId);
-        } else if (nodeIdVar.isValid()) {
-            // Double-clicked a field: find its root struct, set as view root, scroll to field
-            uint64_t nodeId = nodeIdVar.toULongLong();
-            auto& tree = m_tabs[sub].doc->tree;
-            // Walk up to find root struct
-            uint64_t rootId = 0;
-            uint64_t cur = nodeId;
-            while (cur != 0) {
-                int idx = tree.indexOfId(cur);
-                if (idx < 0) break;
-                if (tree.nodes[idx].parentId == 0) { rootId = cur; break; }
-                cur = tree.nodes[idx].parentId;
-            }
-            if (rootId != 0) {
-                int ri = tree.indexOfId(rootId);
-                if (ri >= 0) tree.nodes[ri].collapsed = false;
-                m_tabs[sub].ctrl->setViewRootId(rootId);
-            }
-            m_tabs[sub].ctrl->scrollToNodeId(nodeId);
-        } else if (!index.parent().isValid()) {
-            // Double-clicked project root: clear view root to show all
-            m_tabs[sub].ctrl->setViewRootId(0);
-        }
+        // Type/Enum node: navigate to it
+        auto& tree = m_tabs[sub].doc->tree;
+        int ni = tree.indexOfId(structId);
+        if (ni >= 0) tree.nodes[ni].collapsed = false;
+        m_tabs[sub].ctrl->setViewRootId(structId);
+        m_tabs[sub].ctrl->scrollToNodeId(structId);
     });
 }
 
 void MainWindow::rebuildWorkspaceModel() {
-    m_workspaceModel->clear();
-
-    auto* sub = m_mdiArea->activeSubWindow();
-    if (!sub || !m_tabs.contains(sub)) return;
-
-    TabState& tab = m_tabs[sub];
-    QString tabName = tab.doc->filePath.isEmpty()
-        ? rootName(tab.doc->tree, tab.ctrl->viewRootId())
-        : QFileInfo(tab.doc->filePath).fileName();
-
-    buildWorkspaceModel(m_workspaceModel, tab.doc->tree, tabName,
-                        static_cast<void*>(sub));
-    m_workspaceTree->expandAll();
+    QVector<rcx::TabInfo> tabs;
+    for (auto it = m_tabs.begin(); it != m_tabs.end(); ++it) {
+        TabState& tab = it.value();
+        QString name = tab.doc->filePath.isEmpty()
+            ? rootName(tab.doc->tree, tab.ctrl->viewRootId())
+            : QFileInfo(tab.doc->filePath).fileName();
+        tabs.append({ &tab.doc->tree, name, static_cast<void*>(it.key()) });
+    }
+    rcx::buildProjectExplorer(m_workspaceModel, tabs);
+    m_workspaceTree->expandToDepth(1);
 }
 
 void MainWindow::showPluginsDialog() {

src/mainwindow.h

@@ -31,7 +31,7 @@ private slots:
     void openFile();
     void saveFile();
     void saveFileAs();
-
+    void closeFile();
 
     void addNode();
     void removeNode();
@@ -47,8 +47,12 @@ private slots:
     void toggleMcp();
     void setEditorFont(const QString& fontName);
     void exportCpp();
+    void exportReclassXmlAction();
+    void importFromSource();
+    void importReclassXml();
     void showTypeAliasesDialog();
     void editTheme();
+    void showOptionsDialog();
 
 public:
     // Project Lifecycle API

src/mcp/mcp_bridge.cpp

@@ -248,7 +248,7 @@ QJsonObject McpBridge::handleToolsList(const QJsonValue& id) {
                         "collapse: {op:'collapse', nodeId:'ID', collapsed:true}. "
                         "Insert ops get auto-assigned IDs; use $0, $1 etc. to reference them in later ops. "
                         "Kinds: Hex8 Hex16 Hex32 Hex64 Int8 Int16 Int32 Int64 UInt8 UInt16 UInt32 UInt64 "
-                        "Float Double Bool Pointer32 Pointer64 Vec2 Vec3 Vec4 Mat4x4 UTF8 UTF16 Padding Struct Array"},
+                        "Float Double Bool Pointer32 Pointer64 Vec2 Vec3 Vec4 Mat4x4 UTF8 UTF16 Struct Array"},
         {"inputSchema", QJsonObject{
             {"type", "object"},
             {"properties", QJsonObject{
@@ -793,7 +793,7 @@ QJsonObject McpBridge::toolSourceSwitch(const QJsonObject& args) {
     }
 
     if (args.contains("pid")) {
-        uint32_t pid = (uint32_t)args.value("pid").toInteger();
+        uint32_t pid = (uint32_t)args.value("pid").toInt();
         QString name = args.value("processName").toString();
         if (name.isEmpty()) name = QString("PID %1").arg(pid);
         QString target = QString("%1:%2").arg(pid).arg(name);

src/optionsdialog.cpp

@@ -0,0 +1,261 @@
+#include "optionsdialog.h"
+#include "themes/thememanager.h"
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QFormLayout>
+#include <QDialogButtonBox>
+#include <QPushButton>
+#include <QGroupBox>
+#include <QLabel>
+#include <QTreeWidgetItem>
+#include <functional>
+
+namespace rcx {
+
+OptionsDialog::OptionsDialog(const OptionsResult& current, QWidget* parent)
+    : QDialog(parent)
+{
+    setWindowTitle("Options");
+    setFixedSize(700, 450);
+
+    auto* mainLayout = new QVBoxLayout(this);
+    mainLayout->setSpacing(8);
+    mainLayout->setContentsMargins(10, 10, 10, 10);
+
+    // -- Middle: left column (search + tree) | right column (pages) --
+    auto* middleLayout = new QHBoxLayout;
+    middleLayout->setSpacing(8);
+
+    // Left column: search bar + tree
+    auto* leftColumn = new QVBoxLayout;
+    leftColumn->setSpacing(4);
+
+    m_search = new QLineEdit;
+    m_search->setPlaceholderText("Search Options (Ctrl+E)");
+    m_search->setClearButtonEnabled(true);
+    connect(m_search, &QLineEdit::textChanged, this, &OptionsDialog::filterTree);
+    leftColumn->addWidget(m_search);
+
+    m_tree = new QTreeWidget;
+    m_tree->setHeaderHidden(true);
+    m_tree->setRootIsDecorated(true);
+    m_tree->setFixedWidth(200);
+
+    auto* envItem = new QTreeWidgetItem(m_tree, {"Environment"});
+    auto* generalItem = new QTreeWidgetItem(envItem, {"General"});
+    m_tree->expandAll();
+    m_tree->setCurrentItem(generalItem);
+    leftColumn->addWidget(m_tree, 1);
+
+    middleLayout->addLayout(leftColumn);
+
+    // Right column: stacked pages with group boxes
+    m_pages = new QStackedWidget;
+
+    // -- General page --
+    auto* generalPage = new QWidget;
+    auto* generalLayout = new QVBoxLayout(generalPage);
+    generalLayout->setContentsMargins(0, 0, 0, 0);
+    generalLayout->setSpacing(8);
+
+    // Refresh Rate group box
+    auto* refreshGroup = new QGroupBox("Refresh Rate");
+    auto* refreshLayout = new QFormLayout(refreshGroup);
+    refreshLayout->setSpacing(8);
+    refreshLayout->setFieldGrowthPolicy(QFormLayout::ExpandingFieldsGrow);
+
+    m_refreshSpin = new QSpinBox;
+    m_refreshSpin->setRange(1, 60000);
+    m_refreshSpin->setSingleStep(50);
+    m_refreshSpin->setValue(current.refreshMs);
+    m_refreshSpin->setSuffix(" ms");
+    m_refreshSpin->setObjectName("refreshSpin");
+    refreshLayout->addRow("Interval:", m_refreshSpin);
+
+    auto* refreshDesc = new QLabel(
+        "How often live memory is re-read and the view is updated, in milliseconds. "
+        "Lower values give faster updates but use more CPU. Default: 660 ms.");
+    refreshDesc->setWordWrap(true);
+    refreshDesc->setContentsMargins(0, 0, 0, 0);
+    refreshLayout->addRow(refreshDesc);
+
+    generalLayout->addWidget(refreshGroup);
+
+    // Visual Experience group box
+    auto* visualGroup = new QGroupBox("Visual Experience");
+    auto* visualLayout = new QFormLayout(visualGroup);
+    visualLayout->setSpacing(8);
+    visualLayout->setFieldGrowthPolicy(QFormLayout::ExpandingFieldsGrow);
+
+    m_themeCombo = new QComboBox;
+    auto& tm = ThemeManager::instance();
+    for (const auto& theme : tm.themes())
+        m_themeCombo->addItem(theme.name);
+    m_themeCombo->setCurrentIndex(current.themeIndex);
+    m_themeCombo->setObjectName("themeCombo");
+    visualLayout->addRow("Color theme:", m_themeCombo);
+
+    m_fontCombo = new QComboBox;
+    m_fontCombo->addItem("JetBrains Mono");
+    m_fontCombo->addItem("Consolas");
+    m_fontCombo->setCurrentText(current.fontName);
+    m_fontCombo->setObjectName("fontCombo");
+    visualLayout->addRow("Editor Font:", m_fontCombo);
+
+    m_titleCaseCheck = new QCheckBox("Apply title case styling to menu bar");
+    m_titleCaseCheck->setChecked(current.menuBarTitleCase);
+    visualLayout->addRow(m_titleCaseCheck);
+
+    m_showIconCheck = new QCheckBox("Show icon in title bar");
+    m_showIconCheck->setChecked(current.showIcon);
+    visualLayout->addRow(m_showIconCheck);
+
+    generalLayout->addWidget(visualGroup);
+
+    // Safe Mode group box
+    auto* safeModeGroup = new QGroupBox("Preview Features");
+    auto* safeModeLayout = new QVBoxLayout(safeModeGroup);
+    safeModeLayout->setSpacing(4);
+
+    m_safeModeCheck = new QCheckBox("Safe Mode");
+    m_safeModeCheck->setChecked(current.safeMode);
+    safeModeLayout->addWidget(m_safeModeCheck);
+
+    auto* safeModeDesc = new QLabel(
+        "Enable to use the default OS icon for this application and "
+        "create the window with the name of the executable file.");
+    safeModeDesc->setWordWrap(true);
+    safeModeDesc->setContentsMargins(20, 0, 0, 0);  // indent under checkbox
+    safeModeLayout->addWidget(safeModeDesc);
+
+    generalLayout->addWidget(safeModeGroup);
+    generalLayout->addStretch();
+
+    m_pages->addWidget(generalPage);                     // index 0
+    m_pageKeywords[generalItem] = collectPageKeywords(generalPage);
+
+    // -- AI Features page --
+    auto* aiItem = new QTreeWidgetItem(envItem, {"AI Features"});
+
+    auto* aiPage = new QWidget;
+    auto* aiLayout = new QVBoxLayout(aiPage);
+    aiLayout->setContentsMargins(0, 0, 0, 0);
+    aiLayout->setSpacing(8);
+
+    auto* mcpGroup = new QGroupBox("MCP Server");
+    auto* mcpLayout = new QVBoxLayout(mcpGroup);
+    mcpLayout->setSpacing(4);
+
+    m_autoMcpCheck = new QCheckBox("Auto-start MCP server");
+    m_autoMcpCheck->setChecked(current.autoStartMcp);
+    mcpLayout->addWidget(m_autoMcpCheck);
+
+    auto* mcpDesc = new QLabel(
+        "Automatically start the MCP bridge server when the application launches, "
+        "allowing external AI tools to connect and interact with the editor.");
+    mcpDesc->setWordWrap(true);
+    mcpDesc->setContentsMargins(20, 0, 0, 0);
+    mcpLayout->addWidget(mcpDesc);
+
+    aiLayout->addWidget(mcpGroup);
+    aiLayout->addStretch();
+
+    m_pages->addWidget(aiPage);                          // index 1
+    m_pageKeywords[aiItem] = collectPageKeywords(aiPage);
+
+    // -- Generator page --
+    auto* generatorItem = new QTreeWidgetItem(envItem, {"Generator"});
+
+    auto* generatorPage = new QWidget;
+    auto* generatorLayout = new QVBoxLayout(generatorPage);
+    generatorLayout->setContentsMargins(0, 0, 0, 0);
+    generatorLayout->setSpacing(8);
+    generatorLayout->addStretch();
+
+    m_pages->addWidget(generatorPage);                   // index 2
+    m_pageKeywords[generatorItem] = collectPageKeywords(generatorPage);
+
+    middleLayout->addWidget(m_pages, 1);
+
+    mainLayout->addLayout(middleLayout, 1);
+
+    // Tree <-> page connection
+    m_itemPageIndex[generalItem] = 0;
+    m_itemPageIndex[aiItem] = 1;
+    m_itemPageIndex[generatorItem] = 2;
+    connect(m_tree, &QTreeWidget::currentItemChanged, this,
+            [this](QTreeWidgetItem* item, QTreeWidgetItem*) {
+        if (!item) return;
+        auto it = m_itemPageIndex.find(item);
+        if (it != m_itemPageIndex.end())
+            m_pages->setCurrentIndex(it.value());
+    });
+
+    // -- Button box --
+    auto* buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
+    connect(buttons, &QDialogButtonBox::accepted, this, &QDialog::accept);
+    connect(buttons, &QDialogButtonBox::rejected, this, &QDialog::reject);
+    mainLayout->addWidget(buttons);
+
+}
+
+OptionsResult OptionsDialog::result() const {
+    OptionsResult r;
+    r.themeIndex = m_themeCombo->currentIndex();
+    r.fontName = m_fontCombo->currentText();
+    r.menuBarTitleCase = m_titleCaseCheck->isChecked();
+    r.showIcon = m_showIconCheck->isChecked();
+    r.safeMode = m_safeModeCheck->isChecked();
+    r.autoStartMcp = m_autoMcpCheck->isChecked();
+    r.refreshMs = m_refreshSpin->value();
+    return r;
+}
+
+QStringList OptionsDialog::collectPageKeywords(QWidget* page) {
+    QStringList keywords;
+    for (auto* child : page->findChildren<QWidget*>()) {
+        if (auto* label = qobject_cast<QLabel*>(child))
+            keywords << label->text();
+        else if (auto* cb = qobject_cast<QCheckBox*>(child))
+            keywords << cb->text();
+        else if (auto* gb = qobject_cast<QGroupBox*>(child))
+            keywords << gb->title();
+        else if (auto* combo = qobject_cast<QComboBox*>(child)) {
+            for (int i = 0; i < combo->count(); ++i)
+                keywords << combo->itemText(i);
+        }
+    }
+    return keywords;
+}
+
+void OptionsDialog::filterTree(const QString& text) {
+    std::function<bool(QTreeWidgetItem*)> filter = [&](QTreeWidgetItem* item) -> bool {
+        bool anyChildVisible = false;
+        for (int i = 0; i < item->childCount(); ++i) {
+            if (filter(item->child(i)))
+                anyChildVisible = true;
+        }
+
+        bool selfMatch = item->text(0).contains(text, Qt::CaseInsensitive);
+        if (!selfMatch) {
+            for (const auto& kw : m_pageKeywords.value(item)) {
+                if (kw.contains(text, Qt::CaseInsensitive)) {
+                    selfMatch = true;
+                    break;
+                }
+            }
+        }
+        bool visible = selfMatch || anyChildVisible;
+        item->setHidden(!visible);
+
+        if (visible && item->childCount() > 0)
+            item->setExpanded(true);
+
+        return visible;
+    };
+
+    for (int i = 0; i < m_tree->topLevelItemCount(); ++i)
+        filter(m_tree->topLevelItem(i));
+}
+
+} // namespace rcx

src/optionsdialog.h

@@ -0,0 +1,51 @@
+#pragma once
+#include <QDialog>
+#include <QLineEdit>
+#include <QTreeWidget>
+#include <QStackedWidget>
+#include <QComboBox>
+#include <QCheckBox>
+#include <QHash>
+#include <QSpinBox>
+
+namespace rcx {
+
+struct OptionsResult {
+    int     themeIndex = 0;
+    QString fontName;
+    bool    menuBarTitleCase = true;
+    bool    showIcon = false;
+    bool    safeMode = false;
+    bool    autoStartMcp = false;
+    int     refreshMs = 660;
+};
+
+class OptionsDialog : public QDialog {
+    Q_OBJECT
+public:
+    explicit OptionsDialog(const OptionsResult& current, QWidget* parent = nullptr);
+
+    OptionsResult result() const;
+
+private:
+    void filterTree(const QString& text);
+    static QStringList collectPageKeywords(QWidget* page);
+
+    QLineEdit*      m_search         = nullptr;
+    QTreeWidget*    m_tree           = nullptr;
+    QStackedWidget* m_pages          = nullptr;
+    QComboBox*      m_themeCombo     = nullptr;
+    QComboBox*      m_fontCombo      = nullptr;
+    QCheckBox*      m_titleCaseCheck = nullptr;
+    QCheckBox*      m_showIconCheck  = nullptr;
+    QCheckBox*      m_safeModeCheck  = nullptr;
+    QCheckBox*      m_autoMcpCheck   = nullptr;
+    QSpinBox*       m_refreshSpin    = nullptr;
+
+    // searchable keywords per leaf tree item
+    QHash<QTreeWidgetItem*, QStringList> m_pageKeywords;
+    // tree item → stacked widget page index
+    QHash<QTreeWidgetItem*, int> m_itemPageIndex;
+};
+
+} // namespace rcx

src/resources.qrc

@@ -47,5 +47,9 @@
         <file alias="selection.svg">vsicons/list-selection.svg</file>
         <file alias="symbol-numeric.svg">vsicons/symbol-numeric.svg</file>
         <file alias="symbol-ruler.svg">vsicons/symbol-ruler.svg</file>
+        <file alias="settings-gear.svg">vsicons/settings-gear.svg</file>
+        <file alias="chevron-down.svg">vsicons/chevron-down.svg</file>
+        <file alias="folder.svg">vsicons/folder.svg</file>
+        <file alias="symbol-enum.svg">vsicons/symbol-enum.svg</file>
     </qresource>
 </RCC>

src/themes/defaults/reclass_dark.json

@@ -10,8 +10,8 @@
     "textDim": "#858585",
     "textMuted": "#585858",
     "textFaint": "#505050",
-    "hover": "#2b2b2b",
-    "selected": "#232323",
+    "hover": "#1e1e1e",
+    "selected": "#1e1e1e",
     "selection": "#2b2b2b",
     "syntaxKeyword": "#569cd6",
     "syntaxNumber": "#b5cea8",
@@ -22,6 +22,9 @@
     "indHoverSpan": "#E6B450",
     "indCmdPill": "#2a2a2a",
     "indDataChanged": "#8fbc7a",
+    "indHeatCold": "#D4A945",
+    "indHeatWarm": "#E6B450",
+    "indHeatHot": "#f44747",
     "indHintGreen": "#5a8248",
     "markerPtr": "#f44747",
     "markerCycle": "#e5a00d",

src/themes/defaults/vs.json

@@ -10,8 +10,8 @@
     "textDim": "#858585",
     "textMuted": "#636369",
     "textFaint": "#4d4d55",
-    "hover": "#3e3e42",
-    "selected": "#2d2d30",
+    "hover": "#2c2c2f",
+    "selected": "#262629",
     "selection": "#264f78",
     "syntaxKeyword": "#569cd6",
     "syntaxNumber": "#b5cea8",
@@ -22,6 +22,9 @@
     "indHoverSpan": "#b180d7",
     "indCmdPill": "#2d2d30",
     "indDataChanged": "#8fbc7a",
+    "indHeatCold": "#D4A945",
+    "indHeatWarm": "#d69d85",
+    "indHeatHot": "#f44747",
     "indHintGreen": "#5a8248",
     "markerPtr": "#f44747",
     "markerCycle": "#e5a00d",

src/themes/defaults/warm.json

@@ -10,8 +10,8 @@
     "textDim": "#7a7a6e",
     "textMuted": "#555550",
     "textFaint": "#464646",
-    "hover": "#373737",
-    "selected": "#2d2d2d",
+    "hover": "#282828",
+    "selected": "#262626",
     "selection": "#21213A",
     "syntaxKeyword": "#AA9565",
     "syntaxNumber": "#AAA98C",
@@ -22,6 +22,9 @@
     "indHoverSpan": "#AA9565",
     "indCmdPill": "#2a2a2a",
     "indDataChanged": "#6B959F",
+    "indHeatCold": "#C4A44A",
+    "indHeatWarm": "#AA9565",
+    "indHeatHot": "#A05040",
     "indHintGreen": "#464646",
     "markerPtr": "#6B3B21",
     "markerCycle": "#AA9565",

src/themes/theme.cpp

@@ -28,6 +28,9 @@ const ThemeFieldMeta kThemeFields[] = {
     {"indHoverSpan",  "Hover Span",     "Indicators",  &Theme::indHoverSpan},
     {"indCmdPill",    "Cmd Pill",       "Indicators",  &Theme::indCmdPill},
     {"indDataChanged","Data Changed",   "Indicators",  &Theme::indDataChanged},
+    {"indHeatCold",   "Heat Cold",      "Indicators",  &Theme::indHeatCold},
+    {"indHeatWarm",   "Heat Warm",      "Indicators",  &Theme::indHeatWarm},
+    {"indHeatHot",    "Heat Hot",       "Indicators",  &Theme::indHeatHot},
     {"indHintGreen",  "Hint Green",     "Indicators",  &Theme::indHintGreen},
     {"markerPtr",     "Pointer",        "Markers",     &Theme::markerPtr},
     {"markerCycle",   "Cycle",          "Markers",     &Theme::markerCycle},
@@ -50,6 +53,14 @@ Theme Theme::fromJson(const QJsonObject& o) {
         if (o.contains(kThemeFields[i].key))
             t.*kThemeFields[i].ptr = QColor(o[kThemeFields[i].key].toString());
     }
+    // Derive heat colors from the theme's own palette when keys are absent
+    // cold = muted yellow, warm = hover/string amber, hot = marker red
+    if (!t.indHeatCold.isValid())
+        t.indHeatCold = QColor("#D4A945");
+    if (!t.indHeatWarm.isValid())
+        t.indHeatWarm = t.indHoverSpan.isValid() ? t.indHoverSpan : t.syntaxString;
+    if (!t.indHeatHot.isValid())
+        t.indHeatHot = t.markerPtr;
     return t;
 }
 

src/themes/theme.h

@@ -38,7 +38,10 @@ struct Theme {
     // ── Indicators ──
     QColor indHoverSpan;    // hover link text
     QColor indCmdPill;      // command row pill bg
-    QColor indDataChanged;  // changed data values
+    QColor indDataChanged;  // changed data values (legacy, fallback for old themes)
+    QColor indHeatCold;     // heatmap level 1 (changed once)
+    QColor indHeatWarm;     // heatmap level 2 (moderate changes)
+    QColor indHeatHot;      // heatmap level 3 (frequent changes)
     QColor indHintGreen;    // comment/hint text
 
     // ── Markers ──

src/titlebar.cpp

@@ -114,6 +114,33 @@ void TitleBarWidget::setShowIcon(bool show) {
     }
 }
 
+void TitleBarWidget::setMenuBarTitleCase(bool titleCase) {
+    m_titleCase = titleCase;
+    for (QAction* action : m_menuBar->actions()) {
+        QString text = action->text();
+        QString clean = text;
+        clean.remove('&');
+
+        if (titleCase) {
+            action->setText("&" + clean.toUpper());
+        } else {
+            QString result;
+            bool capitalizeNext = true;
+            for (int i = 0; i < clean.length(); ++i) {
+                QChar ch = clean[i];
+                if (ch.isLetter()) {
+                    result += capitalizeNext ? ch.toUpper() : ch.toLower();
+                    capitalizeNext = false;
+                } else {
+                    result += ch;
+                    if (ch.isSpace()) capitalizeNext = true;
+                }
+            }
+            action->setText("&" + result);
+        }
+    }
+}
+
 void TitleBarWidget::updateMaximizeIcon() {
     if (window()->isMaximized())
         m_btnMax->setIcon(QIcon(":/vsicons/chrome-restore.svg"));

src/titlebar.h

@@ -16,6 +16,8 @@ public:
     QMenuBar* menuBar() const { return m_menuBar; }
     void applyTheme(const Theme& theme);
     void setShowIcon(bool show);
+    void setMenuBarTitleCase(bool titleCase);
+    bool menuBarTitleCase() const { return m_titleCase; }
 
     void updateMaximizeIcon();
 
@@ -32,6 +34,7 @@ private:
     QToolButton* m_btnClose   = nullptr;
 
     Theme m_theme;
+    bool  m_titleCase = true;
 
     QToolButton* makeChromeButton(const QString& iconPath);
     void toggleMaximize();

src/typeselectorpopup.cpp

@@ -16,6 +16,7 @@
 #include <QApplication>
 #include <QScreen>
 #include <QIntValidator>
+#include <QElapsedTimer>
 #include "themes/thememanager.h"
 
 namespace rcx {
@@ -121,7 +122,7 @@ public:
             return;
         }
 
-        // 18px gutter: side triangle if current
+        // Gutter: side triangle if current
         if (m_hasCurrent && m_filtered && row >= 0 && row < m_filtered->size()) {
             const TypeEntry& entry = (*m_filtered)[row];
             bool isCurrent = false;
@@ -130,13 +131,13 @@ public:
             else if (m_current->entryKind == TypeEntry::Composite && entry.entryKind == TypeEntry::Composite)
                 isCurrent = (entry.structId == m_current->structId);
             if (isCurrent) {
-                painter->setPen(t.syntaxType);
+                painter->setPen(t.text);
                 painter->setFont(m_font);
-                painter->drawText(QRect(x, y, 18, h), Qt::AlignCenter,
+                painter->drawText(QRect(x, y, 10, h), Qt::AlignCenter,
                                   QString(QChar(0x25B8)));
             }
         }
-        x += 18;
+        x += 10;
 
         // Icon 16x16 — only for composite entries
         bool hasIcon = (m_filtered && row >= 0 && row < m_filtered->size()
@@ -335,6 +336,7 @@ TypeSelectorPopup::TypeSelectorPopup(QWidget* parent)
             m_arrayCountEdit->setVisible(id == 3);
             if (id == 3) m_arrayCountEdit->setFocus();
             updateModifierPreview();
+            applyFilter(m_filterEdit->text());
         });
         connect(m_arrayCountEdit, &QLineEdit::textChanged,
                 this, [this]() { updateModifierPreview(); });
@@ -368,6 +370,7 @@ TypeSelectorPopup::TypeSelectorPopup(QWidget* parent)
         m_listView->setFrameShape(QFrame::NoFrame);
         m_listView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
         m_listView->setMouseTracking(true);
+        m_listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
         m_listView->viewport()->setAttribute(Qt::WA_Hover, true);
         m_listView->installEventFilter(this);
 
@@ -384,10 +387,33 @@ TypeSelectorPopup::TypeSelectorPopup(QWidget* parent)
 }
 
 void TypeSelectorPopup::warmUp() {
+    // One-time per-process cost (~170ms): Qt lazily initializes the style/font/DLL
+    // subsystem the first time a popup with complex children is shown. Pre-pay it
+    // by briefly showing a throwaway dummy popup with a QListView, then show+hide
+    // ourselves.
+    {
+        auto* primer = new QFrame(nullptr, Qt::Popup | Qt::FramelessWindowHint);
+        primer->resize(300, 400);
+        auto* lay = new QVBoxLayout(primer);
+        lay->addWidget(new QLabel(QStringLiteral("x")));
+        lay->addWidget(new QLineEdit);
+        auto* model = new QStringListModel(primer);
+        QStringList items; for (int i = 0; i < 10; i++) items << QStringLiteral("x");
+        model->setStringList(items);
+        auto* lv = new QListView;
+        lv->setModel(model);
+        lay->addWidget(lv);
+        primer->show();
+        QApplication::processEvents();
+        primer->hide();
+        QApplication::processEvents();
+        delete primer;
+    }
+
     TypeEntry dummy;
     dummy.entryKind = TypeEntry::Primitive;
     dummy.primitiveKind = NodeKind::Hex8;
-    dummy.displayName = "warmup";
+    dummy.displayName = QStringLiteral("warmup");
     setTypes({dummy});
     popup(QPoint(-9999, -9999));
     hide();
@@ -467,7 +493,7 @@ void TypeSelectorPopup::popup(const QPoint& globalPos) {
         QString text = t.classKeyword.isEmpty()
             ? t.displayName
             : (t.classKeyword + QStringLiteral(" ") + t.displayName);
-        int w = 18 + 20 + fm.horizontalAdvance(text) + 16;
+        int w = 10 + 20 + fm.horizontalAdvance(text) + 16;
         if (w > maxTextW) maxTextW = w;
     }
     int popupW = qBound(280, maxTextW + 24, 500);
@@ -537,6 +563,10 @@ void TypeSelectorPopup::applyFilter(const QString& text) {
 
     QString filterBase = text.trimmed();
 
+    // Hide primitives when a pointer modifier (* or **) is active
+    int modId = m_modGroup->checkedId();
+    bool hideprimitives = (modId == 1 || modId == 2);
+
     // Separate primitives and composites
     QVector<TypeEntry> primitives, composites;
     for (const auto& t : m_allTypes) {
@@ -546,9 +576,10 @@ void TypeSelectorPopup::applyFilter(const QString& text) {
             || t.classKeyword.contains(filterBase, Qt::CaseInsensitive);
         if (!matchesFilter) continue;
 
-        if (t.entryKind == TypeEntry::Primitive)
-            primitives.append(t);
-        else if (t.entryKind == TypeEntry::Composite)
+        if (t.entryKind == TypeEntry::Primitive) {
+            if (!hideprimitives)
+                primitives.append(t);
+        } else if (t.entryKind == TypeEntry::Composite)
             composites.append(t);
     }
 

src/workspace_model.h

@@ -1,62 +1,76 @@
 #pragma once
 #include "core.h"
+#include <QIcon>
 #include <QStandardItemModel>
 #include <QStandardItem>
 #include <algorithm>
 
 namespace rcx {
 
-// Recursively add children of parentId as tree items under parentItem.
-inline void addWorkspaceChildren(QStandardItem* parentItem,
-                                 const NodeTree& tree,
-                                 uint64_t parentId,
-                                 void* subPtr) {
-    QVector<int> children = tree.childrenOf(parentId);
-    std::sort(children.begin(), children.end(), [&](int a, int b) {
-        return tree.nodes[a].offset < tree.nodes[b].offset;
-    });
+struct TabInfo {
+    const NodeTree* tree;
+    QString         name;
+    void*           subPtr;   // QMdiSubWindow* as void*
+};
 
-    for (int idx : children) {
-        const Node& node = tree.nodes[idx];
+// Sentinel value stored in UserRole+1 to mark the Project group node.
+static constexpr uint64_t kGroupSentinel = ~uint64_t(0);
 
-        // Skip hex preview nodes — they are padding/filler, not meaningful fields
-        if (isHexNode(node.kind)) continue;
-
-        QString display;
-        if (node.kind == NodeKind::Struct) {
-            QString typeName = node.structTypeName.isEmpty()
-                ? node.name : node.structTypeName;
-            display = QStringLiteral("%1 (%2)")
-                .arg(typeName, node.resolvedClassKeyword());
-        } else {
-            display = QStringLiteral("%1 (%2)")
-                .arg(node.name, QString::fromLatin1(kindToString(node.kind)));
-        }
-
-        auto* item = new QStandardItem(display);
-        item->setData(QVariant::fromValue(subPtr), Qt::UserRole);
-        if (node.kind == NodeKind::Struct)
-            item->setData(QVariant::fromValue(node.id), Qt::UserRole + 1);
-        item->setData(QVariant::fromValue(node.id), Qt::UserRole + 2);  // nodeId for scroll
-
-        if (node.kind == NodeKind::Struct)
-            addWorkspaceChildren(item, tree, node.id, subPtr);
-
-        parentItem->appendRow(item);
-    }
-}
-
-inline void buildWorkspaceModel(QStandardItemModel* model,
-                                const NodeTree& tree,
-                                const QString& projectName,
-                                void* subPtr = nullptr) {
+inline void buildProjectExplorer(QStandardItemModel* model,
+                                 const QVector<TabInfo>& tabs) {
     model->clear();
     model->setHorizontalHeaderLabels({QStringLiteral("Name")});
 
-    auto* projectItem = new QStandardItem(projectName);
-    projectItem->setData(QVariant::fromValue(subPtr), Qt::UserRole);
+    // Single "Project" root with folder icon
+    void* firstSub = tabs.isEmpty() ? nullptr : tabs[0].subPtr;
+    auto* projectItem = new QStandardItem(QIcon(":/vsicons/folder.svg"),
+                                          QStringLiteral("Project"));
+    projectItem->setData(QVariant::fromValue(firstSub), Qt::UserRole);
+    projectItem->setData(QVariant::fromValue(kGroupSentinel), Qt::UserRole + 1);
 
-    addWorkspaceChildren(projectItem, tree, 0, subPtr);
+    // Collect all top-level structs/enums across all tabs
+    QVector<std::pair<const Node*, void*>> types, enums;
+    for (const auto& tab : tabs) {
+        QVector<int> topLevel = tab.tree->childrenOf(0);
+        for (int idx : topLevel) {
+            const Node& n = tab.tree->nodes[idx];
+            if (n.kind != NodeKind::Struct) continue;
+            if (n.resolvedClassKeyword() == QStringLiteral("enum"))
+                enums.append({&n, tab.subPtr});
+            else
+                types.append({&n, tab.subPtr});
+        }
+    }
+
+    auto nameOf = [](const Node* n) {
+        return n->structTypeName.isEmpty() ? n->name : n->structTypeName;
+    };
+    auto cmpName = [&](const std::pair<const Node*, void*>& a,
+                       const std::pair<const Node*, void*>& b) {
+        return nameOf(a.first).compare(nameOf(b.first), Qt::CaseInsensitive) < 0;
+    };
+    std::sort(types.begin(), types.end(), cmpName);
+    std::sort(enums.begin(), enums.end(), cmpName);
+
+    for (const auto& [n, subPtr] : types) {
+        QString display = QStringLiteral("%1 (%2)")
+            .arg(nameOf(n), n->resolvedClassKeyword());
+        auto* item = new QStandardItem(
+            QIcon(":/vsicons/symbol-structure.svg"), display);
+        item->setData(QVariant::fromValue(subPtr), Qt::UserRole);
+        item->setData(QVariant::fromValue(n->id), Qt::UserRole + 1);
+        projectItem->appendRow(item);
+    }
+
+    for (const auto& [n, subPtr] : enums) {
+        QString display = QStringLiteral("%1 (%2)")
+            .arg(nameOf(n), n->resolvedClassKeyword());
+        auto* item = new QStandardItem(
+            QIcon(":/vsicons/symbol-enum.svg"), display);
+        item->setData(QVariant::fromValue(subPtr), Qt::UserRole);
+        item->setData(QVariant::fromValue(n->id), Qt::UserRole + 1);
+        projectItem->appendRow(item);
+    }
 
     model->appendRow(projectItem);
 }

tests/test_compose.cpp

@@ -89,7 +89,7 @@ private slots:
         QCOMPARE(result.meta[2].lineKind, LineKind::Footer);
     }
 
-    void testPaddingMarker() {
+    void testHexNodeCompose() {
         NodeTree tree;
         tree.baseAddress = 0;
 
@@ -100,19 +100,18 @@ private slots:
         int ri = tree.addNode(root);
         uint64_t rootId = tree.nodes[ri].id;
 
-        Node pad;
-        pad.kind = NodeKind::Padding;
-        pad.name = "pad";
-        pad.parentId = rootId;
-        pad.offset = 0;
-        tree.addNode(pad);
+        Node hex;
+        hex.kind = NodeKind::Hex8;
+        hex.name = "pad";
+        hex.parentId = rootId;
+        hex.offset = 0;
+        tree.addNode(hex);
 
         NullProvider prov;
         ComposeResult result = compose(tree, prov);
 
-        // CommandRow + padding + root footer = 3
+        // CommandRow + hex node + root footer = 3
         QCOMPARE(result.meta.size(), 3);
-        QVERIFY(result.meta[1].markerMask & (1u << M_PAD));
         QCOMPARE(result.meta[1].depth, 1);
 
         // Line 2 is root footer

tests/test_controller.cpp

@@ -8,6 +8,26 @@
 
 using namespace rcx;
 
+// Provider with a configurable base address (for testing source-switch logic)
+class BaseAwareProvider : public Provider {
+    QByteArray m_data;
+    uint64_t   m_base;
+public:
+    BaseAwareProvider(QByteArray data, uint64_t base)
+        : m_data(std::move(data)), m_base(base) {}
+    bool read(uint64_t addr, void* buf, int len) const override {
+        if (addr + len > (uint64_t)m_data.size()) return false;
+        std::memcpy(buf, m_data.constData() + addr, len);
+        return true;
+    }
+    int size() const override { return m_data.size(); }
+    uint64_t base() const override { return m_base; }
+    void setBase(uint64_t b) override { m_base = b; }
+    bool isLive() const override { return true; }
+    QString name() const override { return QStringLiteral("test"); }
+    QString kind() const override { return QStringLiteral("Process"); }
+};
+
 // Small tree: one root struct with a few typed fields at known offsets.
 // Keeps tests fast and deterministic (no giant PEB tree).
 static void buildSmallTree(NodeTree& tree) {
@@ -34,9 +54,8 @@ static void buildSmallTree(NodeTree& tree) {
     field(0,  NodeKind::UInt32,  "field_u32");    // 4 bytes
     field(4,  NodeKind::Float,   "field_float");   // 4 bytes
     field(8,  NodeKind::UInt8,   "field_u8");      // 1 byte
-    field(9,  NodeKind::Padding, "pad0");          // 3 bytes padding
-    // Set padding arrayLen = 3 for 3-byte padding
-    tree.nodes.last().arrayLen = 3;
+    field(9,  NodeKind::Hex16,   "pad0");           // 2 bytes
+    field(11, NodeKind::Hex8,    "pad1");           // 1 byte
     field(12, NodeKind::Hex32,   "field_hex");     // 4 bytes
 }
 
@@ -282,47 +301,6 @@ private slots:
         QVERIFY(newIdx >= 0);
     }
 
-    // ── Test: Padding value edit is effectively blocked at controller level ──
-    void testPaddingValueEditIsBlocked() {
-        // Find the padding node
-        int padIdx = -1;
-        for (int i = 0; i < m_doc->tree.nodes.size(); i++) {
-            if (m_doc->tree.nodes[i].kind == NodeKind::Padding) { padIdx = i; break; }
-        }
-        QVERIFY(padIdx >= 0);
-        uint64_t addr = m_doc->tree.computeOffset(padIdx);
-
-        // Read original data at padding offset
-        int padSize = m_doc->tree.nodes[padIdx].byteSize();
-        QByteArray origData = m_doc->provider->readBytes(addr, padSize);
-
-        // The context menu blocks Padding editing, so the controller's setNodeValue
-        // would only be called if the editing UI somehow allows it. But let's verify
-        // the editor correctly blocks it.
-        // Find padding line in composed output
-        ComposeResult result = m_doc->compose();
-        int paddingLine = -1;
-        for (int i = 0; i < result.meta.size(); i++) {
-            if (result.meta[i].nodeKind == NodeKind::Padding &&
-                result.meta[i].lineKind == LineKind::Field) {
-                paddingLine = i;
-                break;
-            }
-        }
-        QVERIFY(paddingLine >= 0);
-
-        m_editor->applyDocument(result);
-        QApplication::processEvents();
-
-        // beginInlineEdit(Value) on Padding line must be rejected
-        QVERIFY(!m_editor->beginInlineEdit(EditTarget::Value, paddingLine));
-        QVERIFY(!m_editor->isEditing());
-
-        // Data must be unchanged
-        QByteArray afterData = m_doc->provider->readBytes(addr, padSize);
-        QCOMPARE(afterData, origData);
-    }
-
     // ── Test: setNodeValue with Hex32 (space-separated hex bytes) ──
     void testSetNodeValueHex() {
         int idx = -1;
@@ -425,6 +403,48 @@ private slots:
         QCOMPARE((uint8_t)bytes[0], (uint8_t)0xFF);
     }
 
+    // ── Test: source switch preserves existing base address ──
+    void testSourceSwitchPreservesBase() {
+        // Document already has baseAddress = 0x1000 from buildSmallTree()
+        QCOMPARE(m_doc->tree.baseAddress, (uint64_t)0x1000);
+
+        // Simulate attaching a new provider whose base differs (e.g. 0x400000)
+        auto prov = std::make_shared<BaseAwareProvider>(makeSmallBuffer(), 0x400000);
+        uint64_t newBase = prov->base();
+        QCOMPARE(newBase, (uint64_t)0x400000);
+
+        m_doc->provider = prov;
+        // This is the controller logic under test:
+        if (m_doc->tree.baseAddress == 0)
+            m_doc->tree.baseAddress = newBase;
+        else
+            m_doc->provider->setBase(m_doc->tree.baseAddress);
+
+        // baseAddress must stay at the original value
+        QCOMPARE(m_doc->tree.baseAddress, (uint64_t)0x1000);
+        // provider base must be synced to match
+        QCOMPARE(m_doc->provider->base(), (uint64_t)0x1000);
+    }
+
+    // ── Test: source switch on fresh doc uses provider default ──
+    void testSourceSwitchFreshDocUsesProviderBase() {
+        // Simulate a fresh document (no loaded .rcx → baseAddress == 0)
+        m_doc->tree.baseAddress = 0;
+
+        auto prov = std::make_shared<BaseAwareProvider>(makeSmallBuffer(), 0x7FFE0000);
+        uint64_t newBase = prov->base();
+
+        m_doc->provider = prov;
+        if (m_doc->tree.baseAddress == 0)
+            m_doc->tree.baseAddress = newBase;
+        else
+            m_doc->provider->setBase(m_doc->tree.baseAddress);
+
+        // Fresh doc should adopt the provider's default base
+        QCOMPARE(m_doc->tree.baseAddress, (uint64_t)0x7FFE0000);
+        QCOMPARE(m_doc->provider->base(), (uint64_t)0x7FFE0000);
+    }
+
     // ── Test: toggleCollapse + undo ──
     void testToggleCollapse() {
         // Root is index 0, a Struct node
@@ -448,6 +468,181 @@ private slots:
         QApplication::processEvents();
         QCOMPARE(m_doc->tree.nodes[0].collapsed, false);
     }
+    // ── Test: value history popup only appears during inline editing ──
+    void testValueHistoryPopupOnlyDuringEdit() {
+        // Record value history for field_u32 so it has heat
+        auto& tree = m_doc->tree;
+        int idx = -1;
+        for (int i = 0; i < tree.nodes.size(); i++) {
+            if (tree.nodes[i].name == "field_u32") { idx = i; break; }
+        }
+        QVERIFY(idx >= 0);
+        uint64_t nodeId = tree.nodes[idx].id;
+
+        QHash<uint64_t, ValueHistory> history;
+        history[nodeId].record("100");
+        history[nodeId].record("200");
+        history[nodeId].record("300");
+        QVERIFY(history[nodeId].uniqueCount() > 1);
+
+        m_editor->setValueHistoryRef(&history);
+
+        // Refresh and compose so editor has meta with heatLevel
+        m_ctrl->refresh();
+        QApplication::processEvents();
+        ComposeResult result = m_doc->compose();
+        // Manually set heat on the node's line meta
+        for (auto& lm : result.meta) {
+            if (lm.nodeId == nodeId) lm.heatLevel = 2;
+        }
+        m_editor->applyDocument(result);
+        QApplication::processEvents();
+
+        // Popup should not exist or not be visible (no editing active)
+        auto* popup = m_editor->findChild<QWidget*>(QString(), Qt::FindDirectChildrenOnly);
+        // Even if popup widget exists, it should not be visible
+        bool popupVisible = false;
+        for (auto* child : m_editor->findChildren<QFrame*>(QString(), Qt::FindDirectChildrenOnly)) {
+            if (child->isVisible() && child->windowFlags() & Qt::ToolTip)
+                popupVisible = true;
+        }
+        QVERIFY2(!popupVisible, "Popup should not be visible when not editing");
+
+        // Start inline edit on value column of field_u32
+        int fieldLine = -1;
+        for (int i = 0; i < result.meta.size(); i++) {
+            if (result.meta[i].nodeId == nodeId && result.meta[i].lineKind == LineKind::Field) {
+                fieldLine = i; break;
+            }
+        }
+        QVERIFY(fieldLine >= 0);
+
+        bool ok = m_editor->beginInlineEdit(EditTarget::Value, fieldLine);
+        QVERIFY(ok);
+        QVERIFY(m_editor->isEditing());
+
+        // Trigger hover cursor update (simulates mouse move during editing)
+        QApplication::processEvents();
+
+        // Cancel edit to clean up
+        m_editor->cancelInlineEdit();
+        QApplication::processEvents();
+
+        m_editor->setValueHistoryRef(nullptr);
+    }
+
+    // ── Test: delete node clears value history for shifted siblings ──
+    void testDeleteClearsHeatForShiftedNodes() {
+        // Replace with a live provider so refresh() actually records values
+        m_doc->provider = std::make_unique<BaseAwareProvider>(makeSmallBuffer(), 0x1000);
+        m_ctrl->refresh();
+        QApplication::processEvents();
+
+        auto& tree = m_doc->tree;
+
+        // Locate field_u32 (the node we'll delete) and the siblings after it.
+        // The small tree has: field_u32(0), field_float(4), field_u8(8),
+        //                     pad0/Hex16(9), pad1/Hex8(11), field_hex/Hex32(12)
+        // field_float and field_u8 are regular (non-hex) types.
+        int delIdx = -1;
+        for (int i = 0; i < tree.nodes.size(); i++) {
+            if (tree.nodes[i].name == "field_u32") { delIdx = i; break; }
+        }
+        QVERIFY(delIdx >= 0);
+        uint64_t delId = tree.nodes[delIdx].id;
+
+        // Collect sibling node IDs that come after field_u32 (will be shifted)
+        uint64_t parentId = tree.nodes[delIdx].parentId;
+        int deletedSize = tree.nodes[delIdx].byteSize(); // 4 bytes
+        int deletedEnd = tree.nodes[delIdx].offset + deletedSize;
+        QVector<uint64_t> shiftedIds;
+        QHash<uint64_t, QString> nameMap;  // for debug messages
+        for (int i = 0; i < tree.nodes.size(); i++) {
+            if (tree.nodes[i].parentId == parentId && i != delIdx
+                && tree.nodes[i].offset >= deletedEnd) {
+                shiftedIds.append(tree.nodes[i].id);
+                nameMap[tree.nodes[i].id] = tree.nodes[i].name;
+            }
+        }
+        QVERIFY2(!shiftedIds.isEmpty(), "Should have siblings after field_u32");
+
+        // Seed value history for shifted siblings (simulate accumulated heat)
+        auto& history = const_cast<QHash<uint64_t, ValueHistory>&>(m_ctrl->valueHistory());
+        for (uint64_t id : shiftedIds) {
+            history[id].record("old_val_1");
+            history[id].record("old_val_2");
+            history[id].record("old_val_3");
+            QVERIFY2(history[id].heatLevel() >= 2,
+                     qPrintable(QString("Pre-delete: %1 should have heat>=2")
+                                .arg(nameMap[id])));
+        }
+
+        // Also seed the to-be-deleted node
+        history[delId].record("del_1");
+        history[delId].record("del_2");
+        QVERIFY(history.contains(delId));
+
+        // Delete field_u32 — this shifts all subsequent siblings
+        m_ctrl->removeNode(delIdx);
+        QApplication::processEvents();
+
+        // The deleted node's history should be gone
+        QVERIFY2(!m_ctrl->valueHistory().contains(delId),
+                 "Deleted node's value history should be cleared");
+
+        // All shifted siblings should have heat=0 after the delete.
+        // With a live provider, refresh() inside removeNode re-records one new
+        // value at the new offset → count=1 → heatLevel=0.
+        for (uint64_t id : shiftedIds) {
+            int heat = m_ctrl->valueHistory().contains(id)
+                ? m_ctrl->valueHistory()[id].heatLevel() : 0;
+            QVERIFY2(heat == 0,
+                     qPrintable(QString("Shifted node '%1' (id=%2) should have heat=0, got %3")
+                                .arg(nameMap[id]).arg(id).arg(heat)));
+        }
+    }
+
+    // ── Test: value history records and cycles correctly ──
+    void testValueHistoryRingBuffer() {
+        ValueHistory vh;
+        QCOMPARE(vh.count, 0);
+        QCOMPARE(vh.heatLevel(), 0);
+
+        vh.record("10");
+        QCOMPARE(vh.count, 1);
+        QCOMPARE(vh.heatLevel(), 0);  // 1 unique = static
+
+        // Duplicate should not increase count
+        vh.record("10");
+        QCOMPARE(vh.count, 1);
+
+        vh.record("20");
+        QCOMPARE(vh.count, 2);
+        QCOMPARE(vh.heatLevel(), 1);  // cold
+
+        vh.record("30");
+        QCOMPARE(vh.count, 3);
+        QCOMPARE(vh.heatLevel(), 2);  // warm
+
+        vh.record("40");
+        vh.record("50");
+        QCOMPARE(vh.count, 5);
+        QCOMPARE(vh.heatLevel(), 3);  // hot
+
+        QCOMPARE(vh.last(), QString("50"));
+
+        // Ring buffer: uniqueCount() caps at kCapacity
+        for (int i = 0; i < 20; i++)
+            vh.record(QString::number(100 + i));
+        QCOMPARE(vh.uniqueCount(), ValueHistory::kCapacity);
+        QVERIFY(vh.count > ValueHistory::kCapacity);
+
+        // forEach iterates oldest→newest within ring
+        QStringList vals;
+        vh.forEach([&](const QString& v) { vals.append(v); });
+        QCOMPARE(vals.size(), ValueHistory::kCapacity);
+        QCOMPARE(vals.last(), vh.last());
+    }
 };
 
 QTEST_MAIN(TestController)

tests/test_core.cpp

@@ -583,6 +583,94 @@ private slots:
         QCOMPARE(norm.size(), 1);
         QVERIFY(norm.contains(rootId));
     }
+
+    // ── ValueHistory tests ──
+
+    void testValueHistory_empty() {
+        rcx::ValueHistory h;
+        QCOMPARE(h.heatLevel(), 0);
+        QCOMPARE(h.uniqueCount(), 0);
+        QCOMPARE(h.last(), QString());
+    }
+
+    void testValueHistory_singleValue() {
+        rcx::ValueHistory h;
+        h.record("42");
+        QCOMPARE(h.heatLevel(), 0);  // only 1 unique → static
+        QCOMPARE(h.uniqueCount(), 1);
+        QCOMPARE(h.last(), QString("42"));
+    }
+
+    void testValueHistory_duplicateIgnored() {
+        rcx::ValueHistory h;
+        h.record("42");
+        h.record("42");
+        h.record("42");
+        QCOMPARE(h.count, 1);
+        QCOMPARE(h.heatLevel(), 0);
+    }
+
+    void testValueHistory_heatLevels() {
+        rcx::ValueHistory h;
+        h.record("a");
+        QCOMPARE(h.heatLevel(), 0);  // 1 unique
+
+        h.record("b");
+        QCOMPARE(h.heatLevel(), 1);  // 2 unique → cold
+
+        h.record("c");
+        QCOMPARE(h.heatLevel(), 2);  // 3 unique → warm
+
+        h.record("d");
+        QCOMPARE(h.heatLevel(), 2);  // 4 unique → warm
+
+        h.record("e");
+        QCOMPARE(h.heatLevel(), 3);  // 5 unique → hot
+    }
+
+    void testValueHistory_ringWrap() {
+        rcx::ValueHistory h;
+        // Fill beyond capacity
+        for (int i = 0; i < 15; i++)
+            h.record(QString::number(i));
+
+        QCOMPARE(h.count, 15);
+        QCOMPARE(h.uniqueCount(), 10);  // capped at kCapacity
+        QCOMPARE(h.heatLevel(), 3);     // hot
+        QCOMPARE(h.last(), QString("14"));
+
+        // Verify oldest values were pushed out, newest 10 remain
+        QStringList collected;
+        h.forEach([&](const QString& v) { collected.append(v); });
+        QCOMPARE(collected.size(), 10);
+        QCOMPARE(collected.first(), QString("5"));   // oldest surviving
+        QCOMPARE(collected.last(), QString("14"));    // newest
+    }
+
+    void testValueHistory_forEach() {
+        rcx::ValueHistory h;
+        h.record("x");
+        h.record("y");
+        h.record("z");
+
+        QStringList items;
+        h.forEach([&](const QString& v) { items.append(v); });
+        QCOMPARE(items.size(), 3);
+        QCOMPARE(items[0], QString("x"));
+        QCOMPARE(items[1], QString("y"));
+        QCOMPARE(items[2], QString("z"));
+    }
+
+    void testValueHistory_oscillation() {
+        // Values that oscillate (A → B → A → B) should still count each unique transition
+        rcx::ValueHistory h;
+        h.record("A");
+        h.record("B");
+        h.record("A");
+        h.record("B");
+        QCOMPARE(h.count, 4);       // 4 transitions
+        QCOMPARE(h.heatLevel(), 2); // warm (count=4 → 3-4 range)
+    }
 };
 
 QTEST_MAIN(TestCore)

tests/test_editor.cpp

@@ -170,9 +170,10 @@ static NodeTree makeTestTree() {
         n.parentId = rootId; n.offset = off;
         tree.addNode(n);
     };
-    auto pad = [&](int off, int len, const char* name) {
-        Node n; n.kind = NodeKind::Padding; n.name = name;
-        n.parentId = rootId; n.offset = off; n.arrayLen = len;
+    auto pad = [&](int off, int /*len*/, const char* name) {
+        // 4-byte padding → Hex32 (all usages in this test pass len=4)
+        Node n; n.kind = NodeKind::Hex32; n.name = name;
+        n.parentId = rootId; n.offset = off;
         tree.addNode(n);
     };
     auto arr = [&](int off, NodeKind ek, int len, const char* name) {
@@ -278,8 +279,8 @@ static NodeTree makeTestTree() {
 
         n.kind = NodeKind::UInt16;  n.name = "Length";         n.offset = 0; tree.addNode(n);
         n.kind = NodeKind::UInt16;  n.name = "MaximumLength";  n.offset = 2; tree.addNode(n);
-        n.kind = NodeKind::Padding; n.name = "Pad";
-        n.offset = 4; n.arrayLen = 4; tree.addNode(n);
+        n.kind = NodeKind::Hex32; n.name = "Pad";
+        n.offset = 4; n.arrayLen = 1; tree.addNode(n);
         n.kind = NodeKind::Pointer64; n.name = "Buffer"; n.offset = 8; n.arrayLen = 1;
         tree.addNode(n);
     }
@@ -751,70 +752,6 @@ private slots:
         m_editor->applyDocument(m_result);
     }
 
-    // ── Test: Padding line rejects value editing ──
-    void testPaddingLineRejectsValueEdit() {
-        m_editor->applyDocument(m_result);
-
-        // Find a Padding line in the composed output
-        int paddingLine = -1;
-        for (int i = 0; i < m_result.meta.size(); i++) {
-            if (m_result.meta[i].nodeKind == NodeKind::Padding &&
-                m_result.meta[i].lineKind == LineKind::Field) {
-                paddingLine = i;
-                break;
-            }
-        }
-        QVERIFY2(paddingLine >= 0, "Should have at least one Padding line in test tree");
-
-        const LineMeta* lm = m_editor->metaForLine(paddingLine);
-        QVERIFY(lm);
-        QCOMPARE(lm->nodeKind, NodeKind::Padding);
-
-        // Value edit on Padding MUST be rejected (the bug fix)
-        QVERIFY2(!m_editor->beginInlineEdit(EditTarget::Value, paddingLine),
-                 "Value edit should be rejected on Padding lines");
-        QVERIFY(!m_editor->isEditing());
-
-        // Name edit on Padding SHOULD succeed (ASCII preview column is editable)
-        bool ok = m_editor->beginInlineEdit(EditTarget::Name, paddingLine);
-        QVERIFY2(ok, "Name edit should be allowed on Padding lines (ASCII preview)");
-        QVERIFY(m_editor->isEditing());
-        m_editor->cancelInlineEdit();
-
-        // Type edit on Padding SHOULD succeed (emits popup signal)
-        QSignalSpy typeSpy(m_editor, &RcxEditor::typePickerRequested);
-        ok = m_editor->beginInlineEdit(EditTarget::Type, paddingLine);
-        QVERIFY2(ok, "Type edit should be allowed on Padding lines");
-        QCOMPARE(typeSpy.count(), 1);
-    }
-
-    // ── Test: resolvedSpanFor rejects Value on Padding (defense-in-depth) ──
-    void testPaddingLineRejectsValueSpan() {
-        m_editor->applyDocument(m_result);
-
-        // Find a Padding line
-        int paddingLine = -1;
-        for (int i = 0; i < m_result.meta.size(); i++) {
-            if (m_result.meta[i].nodeKind == NodeKind::Padding &&
-                m_result.meta[i].lineKind == LineKind::Field) {
-                paddingLine = i;
-                break;
-            }
-        }
-        QVERIFY(paddingLine >= 0);
-
-        const LineMeta* lm = m_editor->metaForLine(paddingLine);
-        QVERIFY(lm);
-
-        // valueSpanFor returns valid (shared with Hex via KF_HexPreview)
-        ColumnSpan vs = RcxEditor::valueSpan(*lm, 200);
-        QVERIFY2(vs.valid, "valueSpanFor should return valid for Padding (shared HexPreview flag)");
-
-        // But beginInlineEdit should still reject it
-        QVERIFY(!m_editor->beginInlineEdit(EditTarget::Value, paddingLine));
-        QVERIFY(!m_editor->isEditing());
-    }
-
     // ── Test: value edit commit fires signal with typed text ──
     void testValueEditCommitUpdatesSignal() {
         m_editor->applyDocument(m_result);
@@ -823,8 +760,6 @@ private slots:
         const LineMeta* lm = m_editor->metaForLine(kFirstDataLine);
         QVERIFY(lm);
         QCOMPARE(lm->lineKind, LineKind::Field);
-        QVERIFY(lm->nodeKind != NodeKind::Padding);
-
         // Begin value edit
         bool ok = m_editor->beginInlineEdit(EditTarget::Value, kFirstDataLine);
         QVERIFY(ok);
@@ -1064,6 +999,144 @@ private slots:
                  "Root header should be suppressed from compose output");
     }
 
+    // ── Test: command row hover indicator survives refresh cycle ──
+    void testCommandRowHoverSurvivesRefresh() {
+        // IND_HOVER_SPAN = 11 (defined in editor.cpp, replicate for test)
+        constexpr int IND_HOVER_SPAN = 11;
+
+        m_editor->applyDocument(m_result);
+
+        // Set command row text (simulates controller.updateCommandRow)
+        QString cmdText = QStringLiteral(
+            "source\u25BE \u00B7 0xD87B5E5000 \u00B7 struct\u25BE _PEB64 {");
+        m_editor->setCommandRowText(cmdText);
+        QApplication::processEvents();
+
+        // Parse the source span on line 0
+        auto* sci = m_editor->scintilla();
+        int len = (int)sci->SendScintilla(
+            QsciScintillaBase::SCI_LINELENGTH, (unsigned long)0);
+        QVERIFY(len > 0);
+        QByteArray buf(len + 1, '\0');
+        sci->SendScintilla(QsciScintillaBase::SCI_GETLINE, (unsigned long)0,
+                           (void*)buf.data());
+        QString lineText = QString::fromUtf8(buf.constData(), len);
+        while (lineText.endsWith('\n') || lineText.endsWith('\r'))
+            lineText.chop(1);
+
+        ColumnSpan srcSpan = commandRowSrcSpan(lineText);
+        QVERIFY2(srcSpan.valid, "Source span should be valid on command row");
+
+        // Programmatically move mouse to the source span
+        int hoverCol = srcSpan.start + 1;
+        QPoint hoverPos = colToViewport(sci, 0, hoverCol);
+        sendMouseMove(sci->viewport(), hoverPos);
+        QApplication::processEvents();
+
+        // Verify IND_HOVER_SPAN is set at the hover position
+        long pos = sci->SendScintilla(QsciScintillaBase::SCI_FINDCOLUMN,
+                                      (unsigned long)0, (long)hoverCol);
+        sci->SendScintilla(QsciScintillaBase::SCI_SETINDICATORCURRENT,
+                           (unsigned long)IND_HOVER_SPAN);
+        int valBefore = (int)sci->SendScintilla(
+            QsciScintillaBase::SCI_INDICATORVALUEAT,
+            (unsigned long)IND_HOVER_SPAN, pos);
+        QVERIFY2(valBefore != 0,
+                 "IND_HOVER_SPAN should be set on source span after hover");
+
+        // Verify cursor is PointingHand (Source target = clickable)
+        QCOMPARE(viewportCursor(m_editor), Qt::PointingHandCursor);
+
+        // ── Simulate a full refresh cycle (same order as controller.refresh) ──
+        ViewState vs = m_editor->saveViewState();
+        m_editor->applyDocument(m_result);
+        m_editor->restoreViewState(vs);
+
+        // Cursor must NOT have flipped to Arrow during applyDocument
+        // (applyHoverCursor is not called prematurely on composed text)
+        QCOMPARE(viewportCursor(m_editor), Qt::PointingHandCursor);
+
+        // updateCommandRow() — replaces line 0 text
+        m_editor->setCommandRowText(cmdText);
+
+        // applySelectionOverlays() — must run AFTER updateCommandRow
+        m_editor->applySelectionOverlay(QSet<uint64_t>());
+        QApplication::processEvents();
+
+        // Re-query the position (text was replaced, byte offset may have shifted)
+        long posAfter = sci->SendScintilla(QsciScintillaBase::SCI_FINDCOLUMN,
+                                           (unsigned long)0, (long)hoverCol);
+        int valAfter = (int)sci->SendScintilla(
+            QsciScintillaBase::SCI_INDICATORVALUEAT,
+            (unsigned long)IND_HOVER_SPAN, posAfter);
+        QVERIFY2(valAfter != 0,
+                 "IND_HOVER_SPAN must survive refresh on command row "
+                 "(hover should not flicker)");
+
+        // Cursor must still be PointingHand after full refresh cycle
+        QCOMPARE(viewportCursor(m_editor), Qt::PointingHandCursor);
+
+        m_editor->applyDocument(m_result);
+    }
+
+    // ── Test: command row hover survives multiple rapid refresh cycles ──
+    void testCommandRowHoverSurvivesRepeatedRefresh() {
+        constexpr int IND_HOVER_SPAN = 11;
+
+        m_editor->applyDocument(m_result);
+
+        QString cmdText = QStringLiteral(
+            "source\u25BE \u00B7 0xD87B5E5000 \u00B7 struct\u25BE _PEB64 {");
+        m_editor->setCommandRowText(cmdText);
+        QApplication::processEvents();
+
+        auto* sci = m_editor->scintilla();
+        int lineLen = (int)sci->SendScintilla(
+            QsciScintillaBase::SCI_LINELENGTH, (unsigned long)0);
+        QByteArray buf(lineLen + 1, '\0');
+        sci->SendScintilla(QsciScintillaBase::SCI_GETLINE, (unsigned long)0,
+                           (void*)buf.data());
+        QString lineText = QString::fromUtf8(buf.constData(), lineLen);
+        while (lineText.endsWith('\n') || lineText.endsWith('\r'))
+            lineText.chop(1);
+
+        ColumnSpan srcSpan = commandRowSrcSpan(lineText);
+        QVERIFY(srcSpan.valid);
+        int hoverCol = srcSpan.start + 1;
+
+        // Move mouse into position
+        QPoint hoverPos = colToViewport(sci, 0, hoverCol);
+        sendMouseMove(sci->viewport(), hoverPos);
+        QApplication::processEvents();
+
+        // Simulate 5 rapid refresh cycles (like ~660ms timer x5)
+        for (int cycle = 0; cycle < 5; cycle++) {
+            ViewState vs = m_editor->saveViewState();
+            m_editor->applyDocument(m_result);
+            m_editor->restoreViewState(vs);
+            m_editor->setCommandRowText(cmdText);
+            m_editor->applySelectionOverlay(QSet<uint64_t>());
+
+            // Re-send mouse move each cycle (mouse is still there physically)
+            sendMouseMove(sci->viewport(), hoverPos);
+            QApplication::processEvents();
+
+            long pos = sci->SendScintilla(QsciScintillaBase::SCI_FINDCOLUMN,
+                                          (unsigned long)0, (long)hoverCol);
+            int val = (int)sci->SendScintilla(
+                QsciScintillaBase::SCI_INDICATORVALUEAT,
+                (unsigned long)IND_HOVER_SPAN, pos);
+            QVERIFY2(val != 0,
+                     qPrintable(QString(
+                         "IND_HOVER_SPAN lost on refresh cycle %1").arg(cycle)));
+            QVERIFY2(viewportCursor(m_editor) == Qt::PointingHandCursor,
+                     qPrintable(QString(
+                         "Cursor flipped away from PointingHand on cycle %1").arg(cycle)));
+        }
+
+        m_editor->applyDocument(m_result);
+    }
+
     // ── Test: MenuBarStyle gives QMenu items generous click targets ──
     // ── Test: M_ACCENT marker appears on selected rows ──
     void testAccentMarkerOnSelectedRows() {
@@ -1182,6 +1255,157 @@ private slots:
                      .arg(styled.height()).arg(base.height())));
     }
 
+    // ── Test: non-hex nodes don't show false heat coloring after offset shift ──
+    void testDeleteClearsHeatOnShiftedNodes() {
+        // Heat indicator constants (replicated from editor.cpp)
+        constexpr int IND_HEAT_COLD = 13;
+        constexpr int IND_HEAT_WARM = 17;
+        constexpr int IND_HEAT_HOT  = 18;
+
+        // Build a small tree: root struct with mixed regular (non-hex) + hex fields
+        NodeTree tree;
+        tree.baseAddress = 0x1000;
+
+        Node root;
+        root.kind = NodeKind::Struct;
+        root.structTypeName = "SmallStruct";
+        root.name = "s";
+        root.parentId = 0;
+        root.offset = 0;
+        int ri = tree.addNode(root);
+        uint64_t rootId = tree.nodes[ri].id;
+
+        // field0: UInt32  at offset  0 (4 bytes) — will be deleted
+        // field1: UInt32  at offset  4 (4 bytes) — regular type, will shift
+        // field2: Float   at offset  8 (4 bytes) — regular type, will shift
+        // field3: Hex32   at offset 12 (4 bytes) — hex type, will shift
+        struct FieldDef { int off; NodeKind kind; const char* name; };
+        FieldDef defs[] = {
+            { 0, NodeKind::UInt32, "count"},
+            { 4, NodeKind::UInt32, "flags"},
+            { 8, NodeKind::Float,  "speed"},
+            {12, NodeKind::Hex32,  "raw"},
+        };
+        QVector<uint64_t> fieldIds;
+        for (auto& d : defs) {
+            Node n;
+            n.kind = d.kind;
+            n.name = d.name;
+            n.parentId = rootId;
+            n.offset = d.off;
+            int idx = tree.addNode(n);
+            fieldIds.append(tree.nodes[idx].id);
+        }
+
+        // Create a provider with 16 bytes of recognizable data
+        QByteArray data(16, '\0');
+        uint32_t v0 = 42;       memcpy(data.data() + 0,  &v0, 4);  // count=42
+        uint32_t v1 = 0xFF;     memcpy(data.data() + 4,  &v1, 4);  // flags=255
+        float    v2 = 3.14f;    memcpy(data.data() + 8,  &v2, 4);  // speed=3.14
+        uint32_t v3 = 0xCAFE;   memcpy(data.data() + 12, &v3, 4);  // raw=0xCAFE
+        BufferProvider prov(data);
+
+        // Compose the initial document
+        ComposeResult result = compose(tree, prov);
+
+        // Inject heatLevel=2 (warm) on field1, field2, field3 — simulates
+        // heat accumulated before the delete
+        for (auto& lm : result.meta) {
+            for (int i = 1; i <= 3; i++) {
+                if (lm.nodeId == fieldIds[i])
+                    lm.heatLevel = 2;
+            }
+        }
+
+        // Apply to editor — heat indicators should appear
+        m_editor->applyDocument(result);
+        QApplication::processEvents();
+
+        auto* sci = m_editor->scintilla();
+
+        // Helper: check if any heat indicator is set anywhere on a line
+        auto hasHeatOnLine = [&](int line) -> bool {
+            int lineLen = (int)sci->SendScintilla(
+                QsciScintillaBase::SCI_LINELENGTH, (unsigned long)line);
+            long lineStart = sci->SendScintilla(
+                QsciScintillaBase::SCI_POSITIONFROMLINE, (unsigned long)line);
+            for (long pos = lineStart; pos < lineStart + lineLen; pos++) {
+                for (int ind : { IND_HEAT_COLD, IND_HEAT_WARM, IND_HEAT_HOT }) {
+                    int val = (int)sci->SendScintilla(
+                        QsciScintillaBase::SCI_INDICATORVALUEAT,
+                        (unsigned long)ind, pos);
+                    if (val != 0) return true;
+                }
+            }
+            return false;
+        };
+
+        // Find lines for each shifted field
+        auto findFieldLine = [&](const ComposeResult& cr, uint64_t nodeId) -> int {
+            for (int i = 0; i < cr.meta.size(); i++) {
+                if (cr.meta[i].nodeId == nodeId && cr.meta[i].lineKind == LineKind::Field)
+                    return i;
+            }
+            return -1;
+        };
+
+        int line1 = findFieldLine(result, fieldIds[1]);
+        int line2 = findFieldLine(result, fieldIds[2]);
+        int line3 = findFieldLine(result, fieldIds[3]);
+        QVERIFY(line1 >= 0);
+        QVERIFY(line2 >= 0);
+        QVERIFY(line3 >= 0);
+
+        // Verify heat indicators ARE present (UInt32, Float, and Hex32)
+        QVERIFY2(hasHeatOnLine(line1),
+                 "Heat should be present on UInt32 'flags' before delete");
+        QVERIFY2(hasHeatOnLine(line2),
+                 "Heat should be present on Float 'speed' before delete");
+        QVERIFY2(hasHeatOnLine(line3),
+                 "Heat should be present on Hex32 'raw' before delete");
+
+        // ── Simulate delete of field0 (UInt32 'count' at offset 0) ──
+        int field0Idx = tree.indexOfId(fieldIds[0]);
+        QVERIFY(field0Idx >= 0);
+        tree.nodes.remove(field0Idx);
+        tree.invalidateIdCache();
+
+        // Shift remaining fields' offsets down by 4
+        for (int i = 1; i <= 3; i++) {
+            int fi = tree.indexOfId(fieldIds[i]);
+            if (fi >= 0) tree.nodes[fi].offset -= 4;
+        }
+
+        // Recompose — heatLevel defaults to 0 (simulates cleared history)
+        ComposeResult afterResult = compose(tree, prov);
+
+        // Apply the post-delete document to the editor
+        m_editor->applyDocument(afterResult);
+        QApplication::processEvents();
+
+        // Find new line positions
+        int newLine1 = findFieldLine(afterResult, fieldIds[1]);
+        int newLine2 = findFieldLine(afterResult, fieldIds[2]);
+        int newLine3 = findFieldLine(afterResult, fieldIds[3]);
+        QVERIFY(newLine1 >= 0);
+        QVERIFY(newLine2 >= 0);
+        QVERIFY(newLine3 >= 0);
+
+        // After applying heatLevel=0, NO heat indicators should appear
+        QVERIFY2(!hasHeatOnLine(newLine1),
+                 "UInt32 'flags' should NOT show heat after offset shift "
+                 "(old values are from wrong address)");
+        QVERIFY2(!hasHeatOnLine(newLine2),
+                 "Float 'speed' should NOT show heat after offset shift "
+                 "(old values are from wrong address)");
+        QVERIFY2(!hasHeatOnLine(newLine3),
+                 "Hex32 'raw' should NOT show heat after offset shift "
+                 "(old values are from wrong address)");
+
+        // Restore original document
+        m_editor->applyDocument(m_result);
+    }
+
     void testMenuHoverRendersAmberText() {
         // Replicate MenuBarStyle with drawControl hover override
         class TestMenuStyle : public QProxyStyle {

tests/test_export_xml.cpp

@@ -0,0 +1,360 @@
+#include <QtTest/QtTest>
+#include <QTemporaryFile>
+#include "core.h"
+#include "export_reclass_xml.h"
+#include "import_reclass_xml.h"
+
+using namespace rcx;
+
+class TestExportXml : public QObject {
+    Q_OBJECT
+private slots:
+    void exportEmptyTree();
+    void exportSingleStruct();
+    void exportPointerRef();
+    void exportEmbeddedStruct();
+    void exportArray();
+    void exportTextNodes();
+    void exportVectors();
+    void exportHexCollapse();
+    void exportMultiClass();
+    void roundTripImportExport();
+};
+
+static int countRoots(const NodeTree& tree) {
+    int n = 0;
+    for (const auto& node : tree.nodes)
+        if (node.parentId == 0 && node.kind == NodeKind::Struct) n++;
+    return n;
+}
+
+static QVector<int> childrenOf(const NodeTree& tree, uint64_t parentId) {
+    QVector<int> result;
+    for (int i = 0; i < tree.nodes.size(); i++)
+        if (tree.nodes[i].parentId == parentId) result.append(i);
+    return result;
+}
+
+static QString exportToString(const NodeTree& tree) {
+    QTemporaryFile tmp;
+    tmp.setAutoRemove(true);
+    if (!tmp.open()) return {};
+    QString path = tmp.fileName();
+    tmp.close();
+
+    QString err;
+    if (!exportReclassXml(tree, path, &err)) return {};
+
+    QFile f(path);
+    if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) return {};
+    return QString::fromUtf8(f.readAll());
+}
+
+static NodeTree roundTrip(const NodeTree& tree) {
+    QTemporaryFile tmp;
+    tmp.setAutoRemove(true);
+    if (!tmp.open()) return {};
+    QString path = tmp.fileName();
+    tmp.close();
+
+    QString err;
+    if (!exportReclassXml(tree, path, &err)) return {};
+    return importReclassXml(path, &err);
+}
+
+// ── Tests ──
+
+void TestExportXml::exportEmptyTree() {
+    NodeTree tree;
+    QString err;
+    QVERIFY(!exportReclassXml(tree, "dummy.xml", &err));
+    QVERIFY(!err.isEmpty());
+}
+
+void TestExportXml::exportSingleStruct() {
+    NodeTree tree;
+    Node s; s.kind = NodeKind::Struct; s.name = QStringLiteral("Player");
+    s.structTypeName = QStringLiteral("Player"); s.parentId = 0;
+    int si = tree.addNode(s);
+    uint64_t sid = tree.nodes[si].id;
+
+    Node f1; f1.kind = NodeKind::Int32; f1.name = QStringLiteral("health");
+    f1.parentId = sid; f1.offset = 0; tree.addNode(f1);
+
+    Node f2; f2.kind = NodeKind::Float; f2.name = QStringLiteral("speed");
+    f2.parentId = sid; f2.offset = 4; tree.addNode(f2);
+
+    Node f3; f3.kind = NodeKind::UInt64; f3.name = QStringLiteral("id");
+    f3.parentId = sid; f3.offset = 8; tree.addNode(f3);
+
+    QString xml = exportToString(tree);
+    QVERIFY(!xml.isEmpty());
+    QVERIFY(xml.contains(QStringLiteral("Player")));
+    QVERIFY(xml.contains(QStringLiteral("health")));
+    QVERIFY(xml.contains(QStringLiteral("speed")));
+    QVERIFY(xml.contains(QStringLiteral("ReClassEx")));
+
+    // Round-trip
+    NodeTree rt = roundTrip(tree);
+    QCOMPARE(countRoots(rt), 1);
+    QCOMPARE(rt.nodes[0].name, QStringLiteral("Player"));
+    auto kids = childrenOf(rt, rt.nodes[0].id);
+    QCOMPARE(kids.size(), 3);
+    QCOMPARE(rt.nodes[kids[0]].kind, NodeKind::Int32);
+    QCOMPARE(rt.nodes[kids[1]].kind, NodeKind::Float);
+    QCOMPARE(rt.nodes[kids[2]].kind, NodeKind::UInt64);
+}
+
+void TestExportXml::exportPointerRef() {
+    NodeTree tree;
+    Node s1; s1.kind = NodeKind::Struct; s1.name = QStringLiteral("Target");
+    s1.structTypeName = QStringLiteral("Target"); s1.parentId = 0;
+    int s1i = tree.addNode(s1);
+    uint64_t s1id = tree.nodes[s1i].id;
+
+    Node f; f.kind = NodeKind::Int32; f.name = QStringLiteral("val");
+    f.parentId = s1id; f.offset = 0; tree.addNode(f);
+
+    Node s2; s2.kind = NodeKind::Struct; s2.name = QStringLiteral("HasPtr");
+    s2.structTypeName = QStringLiteral("HasPtr"); s2.parentId = 0;
+    int s2i = tree.addNode(s2);
+    uint64_t s2id = tree.nodes[s2i].id;
+
+    Node ptr; ptr.kind = NodeKind::Pointer64; ptr.name = QStringLiteral("pTarget");
+    ptr.parentId = s2id; ptr.offset = 0; ptr.refId = s1id;
+    tree.addNode(ptr);
+
+    QString xml = exportToString(tree);
+    QVERIFY(xml.contains(QStringLiteral("Pointer=\"Target\"")));
+
+    // Round-trip: pointer should resolve
+    NodeTree rt = roundTrip(tree);
+    QCOMPARE(countRoots(rt), 2);
+    bool foundPtr = false;
+    for (const auto& n : rt.nodes) {
+        if (n.kind == NodeKind::Pointer64 && n.name == QStringLiteral("pTarget")) {
+            QVERIFY(n.refId != 0);
+            foundPtr = true;
+        }
+    }
+    QVERIFY(foundPtr);
+}
+
+void TestExportXml::exportEmbeddedStruct() {
+    NodeTree tree;
+    Node inner; inner.kind = NodeKind::Struct; inner.name = QStringLiteral("Inner");
+    inner.structTypeName = QStringLiteral("Inner"); inner.parentId = 0;
+    int ii = tree.addNode(inner);
+    uint64_t iid = tree.nodes[ii].id;
+
+    Node iv; iv.kind = NodeKind::Int32; iv.name = QStringLiteral("x");
+    iv.parentId = iid; iv.offset = 0; tree.addNode(iv);
+
+    Node outer; outer.kind = NodeKind::Struct; outer.name = QStringLiteral("Outer");
+    outer.structTypeName = QStringLiteral("Outer"); outer.parentId = 0;
+    int oi = tree.addNode(outer);
+    uint64_t oid = tree.nodes[oi].id;
+
+    Node embed; embed.kind = NodeKind::Struct; embed.name = QStringLiteral("embedded");
+    embed.structTypeName = QStringLiteral("Inner"); embed.parentId = oid;
+    embed.offset = 0; embed.refId = iid;
+    tree.addNode(embed);
+
+    QString xml = exportToString(tree);
+    QVERIFY(xml.contains(QStringLiteral("Instance=\"Inner\"")));
+}
+
+void TestExportXml::exportArray() {
+    NodeTree tree;
+    Node s; s.kind = NodeKind::Struct; s.name = QStringLiteral("Container");
+    s.structTypeName = QStringLiteral("Container"); s.parentId = 0;
+    int si = tree.addNode(s);
+    uint64_t sid = tree.nodes[si].id;
+
+    Node arr; arr.kind = NodeKind::Array; arr.name = QStringLiteral("items");
+    arr.parentId = sid; arr.offset = 0; arr.arrayLen = 10;
+    arr.elementKind = NodeKind::Int32;
+    tree.addNode(arr);
+
+    QString xml = exportToString(tree);
+    QVERIFY(xml.contains(QStringLiteral("Total=\"10\"")));
+    QVERIFY(xml.contains(QStringLiteral("<Array")));
+}
+
+void TestExportXml::exportTextNodes() {
+    NodeTree tree;
+    Node s; s.kind = NodeKind::Struct; s.name = QStringLiteral("TextStruct");
+    s.structTypeName = QStringLiteral("TextStruct"); s.parentId = 0;
+    int si = tree.addNode(s);
+    uint64_t sid = tree.nodes[si].id;
+
+    Node u8; u8.kind = NodeKind::UTF8; u8.name = QStringLiteral("name");
+    u8.parentId = sid; u8.offset = 0; u8.strLen = 32; tree.addNode(u8);
+
+    Node u16; u16.kind = NodeKind::UTF16; u16.name = QStringLiteral("wname");
+    u16.parentId = sid; u16.offset = 32; u16.strLen = 16; tree.addNode(u16);
+
+    NodeTree rt = roundTrip(tree);
+    QCOMPARE(countRoots(rt), 1);
+    auto kids = childrenOf(rt, rt.nodes[0].id);
+    QCOMPARE(kids.size(), 2);
+    QCOMPARE(rt.nodes[kids[0]].kind, NodeKind::UTF8);
+    QCOMPARE(rt.nodes[kids[0]].strLen, 32);
+    QCOMPARE(rt.nodes[kids[1]].kind, NodeKind::UTF16);
+    QCOMPARE(rt.nodes[kids[1]].strLen, 16);
+}
+
+void TestExportXml::exportVectors() {
+    NodeTree tree;
+    Node s; s.kind = NodeKind::Struct; s.name = QStringLiteral("Vectors");
+    s.structTypeName = QStringLiteral("Vectors"); s.parentId = 0;
+    int si = tree.addNode(s);
+    uint64_t sid = tree.nodes[si].id;
+
+    Node v2; v2.kind = NodeKind::Vec2; v2.name = QStringLiteral("pos2");
+    v2.parentId = sid; v2.offset = 0; tree.addNode(v2);
+
+    Node v3; v3.kind = NodeKind::Vec3; v3.name = QStringLiteral("pos3");
+    v3.parentId = sid; v3.offset = 8; tree.addNode(v3);
+
+    Node v4; v4.kind = NodeKind::Vec4; v4.name = QStringLiteral("rot");
+    v4.parentId = sid; v4.offset = 20; tree.addNode(v4);
+
+    Node m; m.kind = NodeKind::Mat4x4; m.name = QStringLiteral("matrix");
+    m.parentId = sid; m.offset = 36; tree.addNode(m);
+
+    NodeTree rt = roundTrip(tree);
+    auto kids = childrenOf(rt, rt.nodes[0].id);
+    QCOMPARE(kids.size(), 4);
+    QCOMPARE(rt.nodes[kids[0]].kind, NodeKind::Vec2);
+    QCOMPARE(rt.nodes[kids[1]].kind, NodeKind::Vec3);
+    QCOMPARE(rt.nodes[kids[2]].kind, NodeKind::Vec4);
+    QCOMPARE(rt.nodes[kids[3]].kind, NodeKind::Mat4x4);
+}
+
+void TestExportXml::exportHexCollapse() {
+    NodeTree tree;
+    Node s; s.kind = NodeKind::Struct; s.name = QStringLiteral("HexTest");
+    s.structTypeName = QStringLiteral("HexTest"); s.parentId = 0;
+    int si = tree.addNode(s);
+    uint64_t sid = tree.nodes[si].id;
+
+    // 4 consecutive Hex8 nodes should collapse to one Custom node
+    for (int i = 0; i < 4; i++) {
+        Node h; h.kind = NodeKind::Hex8; h.parentId = sid; h.offset = i;
+        tree.addNode(h);
+    }
+    // Followed by a real field
+    Node f; f.kind = NodeKind::Int32; f.name = QStringLiteral("val");
+    f.parentId = sid; f.offset = 4; tree.addNode(f);
+
+    QString xml = exportToString(tree);
+    // Should have Type="21" (Custom) for the collapsed hex
+    QVERIFY(xml.contains(QStringLiteral("Type=\"21\"")));
+    // Size should be 4
+    QVERIFY(xml.contains(QStringLiteral("Size=\"4\"")));
+
+    // Round-trip: custom expands back to hex nodes
+    NodeTree rt = roundTrip(tree);
+    QCOMPARE(countRoots(rt), 1);
+    auto kids = childrenOf(rt, rt.nodes[0].id);
+    // Import expands Custom(4 bytes) to best-fit hex: Hex32 (1 node) + Int32 = 2
+    QVERIFY(kids.size() >= 2);
+    // Last child should be Int32
+    QCOMPARE(rt.nodes[kids.last()].kind, NodeKind::Int32);
+}
+
+void TestExportXml::exportMultiClass() {
+    NodeTree tree;
+    for (int c = 0; c < 5; c++) {
+        Node s; s.kind = NodeKind::Struct;
+        s.name = QStringLiteral("Class%1").arg(c);
+        s.structTypeName = s.name; s.parentId = 0;
+        int si = tree.addNode(s);
+        uint64_t sid = tree.nodes[si].id;
+
+        Node f; f.kind = NodeKind::Int32;
+        f.name = QStringLiteral("field%1").arg(c);
+        f.parentId = sid; f.offset = 0; tree.addNode(f);
+    }
+
+    NodeTree rt = roundTrip(tree);
+    QCOMPARE(countRoots(rt), 5);
+
+    // All class names preserved
+    QSet<QString> names;
+    for (const auto& n : rt.nodes)
+        if (n.parentId == 0 && n.kind == NodeKind::Struct) names.insert(n.name);
+    for (int c = 0; c < 5; c++)
+        QVERIFY(names.contains(QStringLiteral("Class%1").arg(c)));
+}
+
+void TestExportXml::roundTripImportExport() {
+    // Build a comprehensive tree and verify it survives export->import
+    NodeTree tree;
+
+    Node s; s.kind = NodeKind::Struct; s.name = QStringLiteral("FullTest");
+    s.structTypeName = QStringLiteral("FullTest"); s.parentId = 0;
+    int si = tree.addNode(s);
+    uint64_t sid = tree.nodes[si].id;
+
+    int offset = 0;
+    auto addField = [&](NodeKind kind, const QString& name) {
+        Node n; n.kind = kind; n.name = name; n.parentId = sid; n.offset = offset;
+        tree.addNode(n);
+        offset += sizeForKind(kind);
+    };
+
+    addField(NodeKind::Int8, QStringLiteral("a"));
+    addField(NodeKind::Int16, QStringLiteral("b"));
+    addField(NodeKind::Int32, QStringLiteral("c"));
+    addField(NodeKind::Int64, QStringLiteral("d"));
+    addField(NodeKind::UInt8, QStringLiteral("e"));
+    addField(NodeKind::UInt16, QStringLiteral("f"));
+    addField(NodeKind::UInt32, QStringLiteral("g"));
+    addField(NodeKind::UInt64, QStringLiteral("h"));
+    addField(NodeKind::Float, QStringLiteral("i"));
+    addField(NodeKind::Double, QStringLiteral("j"));
+    addField(NodeKind::Vec2, QStringLiteral("k"));
+    addField(NodeKind::Vec3, QStringLiteral("l"));
+    addField(NodeKind::Vec4, QStringLiteral("m"));
+
+    // Self-pointer
+    Node ptr; ptr.kind = NodeKind::Pointer64; ptr.name = QStringLiteral("self");
+    ptr.parentId = sid; ptr.offset = offset; ptr.refId = sid;
+    tree.addNode(ptr);
+    offset += 8;
+
+    // UTF8
+    Node u8; u8.kind = NodeKind::UTF8; u8.name = QStringLiteral("str");
+    u8.parentId = sid; u8.offset = offset; u8.strLen = 64;
+    tree.addNode(u8);
+
+    NodeTree rt = roundTrip(tree);
+    QCOMPARE(countRoots(rt), 1);
+    QCOMPARE(rt.nodes[0].name, QStringLiteral("FullTest"));
+
+    auto origKids = childrenOf(tree, sid);
+    auto rtKids = childrenOf(rt, rt.nodes[0].id);
+    QCOMPARE(rtKids.size(), origKids.size());
+
+    // Verify each field kind matches
+    for (int i = 0; i < origKids.size(); i++) {
+        QCOMPARE(rt.nodes[rtKids[i]].kind, tree.nodes[origKids[i]].kind);
+        QCOMPARE(rt.nodes[rtKids[i]].name, tree.nodes[origKids[i]].name);
+    }
+
+    // Verify self-pointer resolved
+    bool foundSelf = false;
+    for (const auto& n : rt.nodes) {
+        if (n.name == QStringLiteral("self") && n.kind == NodeKind::Pointer64) {
+            QVERIFY(n.refId != 0);
+            QCOMPARE(n.refId, rt.nodes[0].id);
+            foundSelf = true;
+        }
+    }
+    QVERIFY(foundSelf);
+}
+
+QTEST_MAIN(TestExportXml)
+#include "test_export_xml.moc"

tests/test_generator.cpp

@@ -418,30 +418,6 @@ private slots:
         QVERIFY(result.contains("wchar_t wname[32];"));
     }
 
-    // ── Padding node ──
-
-    void testPaddingNode() {
-        rcx::NodeTree tree;
-        rcx::Node root;
-        root.kind = rcx::NodeKind::Struct;
-        root.name = "PadTest";
-        root.structTypeName = "PadTest";
-        root.parentId = 0;
-        int ri = tree.addNode(root);
-        uint64_t rootId = tree.nodes[ri].id;
-
-        rcx::Node pad;
-        pad.kind = rcx::NodeKind::Padding;
-        pad.name = "reserved";
-        pad.parentId = rootId;
-        pad.offset = 0;
-        pad.arrayLen = 16;
-        tree.addNode(pad);
-
-        QString result = rcx::renderCpp(tree, rootId);
-        QVERIFY(result.contains("uint8_t reserved[16];"));
-    }
-
     // ── Full SDK export (multiple root structs) ──
 
     void testFullSdkExport() {

tests/test_import_source.cpp

@@ -0,0 +1,846 @@
+#include <QtTest/QtTest>
+#include "core.h"
+#include "import_source.h"
+
+using namespace rcx;
+
+class TestImportSource : public QObject {
+    Q_OBJECT
+private slots:
+    // Basic type tests
+    void emptyInput();
+    void noStructs();
+    void singleEmptyStruct();
+    void stdintTypes();
+    void windowsTypes();
+    void platformPointerTypes();
+    void standardCTypes();
+    void multiWordTypes();
+    void floatDouble();
+    void boolType();
+
+    // Pointer tests
+    void voidPointer();
+    void typedPointer();
+    void selfReferencingPointer();
+    void doublePointer();
+
+    // Array tests
+    void primitiveArray();
+    void charArrayToUtf8();
+    void wcharArrayToUtf16();
+    void floatArrayToVec2();
+    void floatArrayToVec3();
+    void floatArrayToVec4();
+    void floatArray4x4ToMat4x4();
+    void genericFloatArray();
+    void structArray();
+
+    // Comment offset tests
+    void commentOffsets();
+    void computedOffsets();
+    void mixedOffsetsAutoDetect();
+
+    // Multi-struct tests
+    void multiStruct();
+    void pointerCrossRef();
+
+    // Forward declarations
+    void forwardDeclaration();
+
+    // Union handling
+    void unionPickFirst();
+
+    // Padding fields
+    void paddingFieldExpansion();
+
+    // static_assert
+    void staticAssertTailPadding();
+
+    // Embedded struct
+    void embeddedStruct();
+
+    // Typedef
+    void typedefBasic();
+
+    // Qualifiers
+    void constVolatileQualifiers();
+    void structPrefixOnType();
+
+    // Edge cases
+    void bitfieldSkipped();
+    void hexArraySizes();
+    void windowsStylePEB();
+    void classKeyword();
+    void inheritanceSkipped();
+
+    // Round-trip test (requires generator.h)
+    void basicRoundTrip();
+};
+
+// ── Helper ──
+
+static int countRoots(const NodeTree& tree) {
+    int n = 0;
+    for (const auto& node : tree.nodes)
+        if (node.parentId == 0 && node.kind == NodeKind::Struct) n++;
+    return n;
+}
+
+static QVector<int> childrenOf(const NodeTree& tree, uint64_t parentId) {
+    QVector<int> result;
+    for (int i = 0; i < tree.nodes.size(); i++)
+        if (tree.nodes[i].parentId == parentId) result.append(i);
+    return result;
+}
+
+// ── Tests ──
+
+void TestImportSource::emptyInput() {
+    QString err;
+    NodeTree tree = importFromSource(QString(), &err);
+    QVERIFY(tree.nodes.isEmpty());
+    QVERIFY(!err.isEmpty());
+}
+
+void TestImportSource::noStructs() {
+    QString err;
+    NodeTree tree = importFromSource(QStringLiteral("int x = 42;"), &err);
+    QVERIFY(tree.nodes.isEmpty());
+    QVERIFY(!err.isEmpty());
+}
+
+void TestImportSource::singleEmptyStruct() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Empty {};\n"
+    ));
+    QCOMPARE(countRoots(tree), 1);
+    QCOMPARE(tree.nodes[0].name, QStringLiteral("Empty"));
+    QCOMPARE(tree.nodes[0].kind, NodeKind::Struct);
+}
+
+void TestImportSource::stdintTypes() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Test {\n"
+        "    uint8_t  a;\n"
+        "    int8_t   b;\n"
+        "    uint16_t c;\n"
+        "    int16_t  d;\n"
+        "    uint32_t e;\n"
+        "    int32_t  f;\n"
+        "    uint64_t g;\n"
+        "    int64_t  h;\n"
+        "};\n"
+    ));
+    QCOMPARE(countRoots(tree), 1);
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 8);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::UInt8);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Int8);
+    QCOMPARE(tree.nodes[kids[2]].kind, NodeKind::UInt16);
+    QCOMPARE(tree.nodes[kids[3]].kind, NodeKind::Int16);
+    QCOMPARE(tree.nodes[kids[4]].kind, NodeKind::UInt32);
+    QCOMPARE(tree.nodes[kids[5]].kind, NodeKind::Int32);
+    QCOMPARE(tree.nodes[kids[6]].kind, NodeKind::UInt64);
+    QCOMPARE(tree.nodes[kids[7]].kind, NodeKind::Int64);
+}
+
+void TestImportSource::windowsTypes() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct WinTypes {\n"
+        "    BYTE a;\n"
+        "    WORD b;\n"
+        "    DWORD c;\n"
+        "    QWORD d;\n"
+        "    ULONG e;\n"
+        "    LONG f;\n"
+        "    USHORT g;\n"
+        "    UCHAR h;\n"
+        "    BOOLEAN i;\n"
+        "    BOOL j;\n"
+        "    CHAR k;\n"
+        "    WCHAR l;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 12);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::UInt8);   // BYTE
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::UInt16);  // WORD
+    QCOMPARE(tree.nodes[kids[2]].kind, NodeKind::UInt32);  // DWORD
+    QCOMPARE(tree.nodes[kids[3]].kind, NodeKind::UInt64);  // QWORD
+    QCOMPARE(tree.nodes[kids[4]].kind, NodeKind::UInt32);  // ULONG
+    QCOMPARE(tree.nodes[kids[5]].kind, NodeKind::Int32);   // LONG
+    QCOMPARE(tree.nodes[kids[6]].kind, NodeKind::UInt16);  // USHORT
+    QCOMPARE(tree.nodes[kids[7]].kind, NodeKind::UInt8);   // UCHAR
+    QCOMPARE(tree.nodes[kids[8]].kind, NodeKind::UInt8);   // BOOLEAN
+    QCOMPARE(tree.nodes[kids[9]].kind, NodeKind::Int32);   // BOOL
+    QCOMPARE(tree.nodes[kids[10]].kind, NodeKind::Int8);   // CHAR
+    QCOMPARE(tree.nodes[kids[11]].kind, NodeKind::UInt16); // WCHAR
+}
+
+void TestImportSource::platformPointerTypes() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct PtrTypes {\n"
+        "    PVOID a;\n"
+        "    HANDLE b;\n"
+        "    SIZE_T c;\n"
+        "    ULONG_PTR d;\n"
+        "    uintptr_t e;\n"
+        "    size_t f;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 6);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Pointer64);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Pointer64);
+    QCOMPARE(tree.nodes[kids[2]].kind, NodeKind::UInt64);
+    QCOMPARE(tree.nodes[kids[3]].kind, NodeKind::UInt64);
+    QCOMPARE(tree.nodes[kids[4]].kind, NodeKind::UInt64);
+    QCOMPARE(tree.nodes[kids[5]].kind, NodeKind::UInt64);
+}
+
+void TestImportSource::standardCTypes() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct CTypes {\n"
+        "    char a;\n"
+        "    short b;\n"
+        "    int c;\n"
+        "    long d;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 4);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Int8);    // char
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Int16);   // short
+    QCOMPARE(tree.nodes[kids[2]].kind, NodeKind::Int32);   // int
+    QCOMPARE(tree.nodes[kids[3]].kind, NodeKind::Int32);   // long
+}
+
+void TestImportSource::multiWordTypes() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct MultiWord {\n"
+        "    unsigned char a;\n"
+        "    unsigned short b;\n"
+        "    unsigned int c;\n"
+        "    unsigned long d;\n"
+        "    long long e;\n"
+        "    unsigned long long f;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 6);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::UInt8);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::UInt16);
+    QCOMPARE(tree.nodes[kids[2]].kind, NodeKind::UInt32);
+    QCOMPARE(tree.nodes[kids[3]].kind, NodeKind::UInt32);
+    QCOMPARE(tree.nodes[kids[4]].kind, NodeKind::Int64);
+    QCOMPARE(tree.nodes[kids[5]].kind, NodeKind::UInt64);
+}
+
+void TestImportSource::floatDouble() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct FD {\n"
+        "    float a;\n"
+        "    double b;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 2);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Float);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Double);
+}
+
+void TestImportSource::boolType() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct B {\n"
+        "    bool a;\n"
+        "    _Bool b;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 2);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Bool);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Bool);
+}
+
+void TestImportSource::voidPointer() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct VP {\n"
+        "    void* ptr;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Pointer64);
+    QCOMPARE(tree.nodes[kids[0]].name, QStringLiteral("ptr"));
+    QCOMPARE(tree.nodes[kids[0]].refId, uint64_t(0)); // void* has no target
+}
+
+void TestImportSource::typedPointer() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Target {\n"
+        "    int x;\n"
+        "};\n"
+        "struct HasPtr {\n"
+        "    Target* pTarget;\n"
+        "};\n"
+    ));
+    QCOMPARE(countRoots(tree), 2);
+    // Find HasPtr
+    int hasPtrIdx = -1;
+    for (int i = 0; i < tree.nodes.size(); i++) {
+        if (tree.nodes[i].name == QStringLiteral("HasPtr") && tree.nodes[i].parentId == 0) {
+            hasPtrIdx = i; break;
+        }
+    }
+    QVERIFY(hasPtrIdx >= 0);
+    auto kids = childrenOf(tree, tree.nodes[hasPtrIdx].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Pointer64);
+    QVERIFY(tree.nodes[kids[0]].refId != 0);
+    // refId should point to Target struct
+    int targetIdx = tree.indexOfId(tree.nodes[kids[0]].refId);
+    QVERIFY(targetIdx >= 0);
+    QCOMPARE(tree.nodes[targetIdx].name, QStringLiteral("Target"));
+}
+
+void TestImportSource::selfReferencingPointer() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Node {\n"
+        "    int value;\n"
+        "    Node* next;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 2);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Pointer64);
+    QCOMPARE(tree.nodes[kids[1]].refId, tree.nodes[0].id);
+}
+
+void TestImportSource::doublePointer() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct DP {\n"
+        "    void** ppData;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Pointer64);
+}
+
+void TestImportSource::primitiveArray() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct PA {\n"
+        "    int32_t values[10];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Array);
+    QCOMPARE(tree.nodes[kids[0]].arrayLen, 10);
+    QCOMPARE(tree.nodes[kids[0]].elementKind, NodeKind::Int32);
+}
+
+void TestImportSource::charArrayToUtf8() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct CA {\n"
+        "    char name[64];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::UTF8);
+    QCOMPARE(tree.nodes[kids[0]].strLen, 64);
+}
+
+void TestImportSource::wcharArrayToUtf16() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct WC {\n"
+        "    wchar_t name[32];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::UTF16);
+    QCOMPARE(tree.nodes[kids[0]].strLen, 32);
+}
+
+void TestImportSource::floatArrayToVec2() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct V {\n"
+        "    float pos[2];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Vec2);
+}
+
+void TestImportSource::floatArrayToVec3() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct V {\n"
+        "    float pos[3];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Vec3);
+}
+
+void TestImportSource::floatArrayToVec4() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct V {\n"
+        "    float rot[4];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Vec4);
+}
+
+void TestImportSource::floatArray4x4ToMat4x4() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct M {\n"
+        "    float matrix[4][4];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Mat4x4);
+}
+
+void TestImportSource::genericFloatArray() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct GF {\n"
+        "    float values[8];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Array);
+    QCOMPARE(tree.nodes[kids[0]].arrayLen, 8);
+    QCOMPARE(tree.nodes[kids[0]].elementKind, NodeKind::Float);
+}
+
+void TestImportSource::structArray() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Item {\n"
+        "    int id;\n"
+        "};\n"
+        "struct Container {\n"
+        "    Item items[5];\n"
+        "};\n"
+    ));
+    QCOMPARE(countRoots(tree), 2);
+    // Find Container
+    int contIdx = -1;
+    for (int i = 0; i < tree.nodes.size(); i++) {
+        if (tree.nodes[i].name == QStringLiteral("Container") && tree.nodes[i].parentId == 0) {
+            contIdx = i; break;
+        }
+    }
+    QVERIFY(contIdx >= 0);
+    auto kids = childrenOf(tree, tree.nodes[contIdx].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Array);
+    QCOMPARE(tree.nodes[kids[0]].arrayLen, 5);
+    QCOMPARE(tree.nodes[kids[0]].elementKind, NodeKind::Struct);
+}
+
+void TestImportSource::commentOffsets() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Offsets {\n"
+        "    uint64_t vtable; // 0x0\n"
+        "    float health; // 0x8\n"
+        "    uint8_t _pad000C[0x4]; // 0xC\n"
+        "    double score; // 0x10\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    // vtable at 0x0
+    QCOMPARE(tree.nodes[kids[0]].offset, 0);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::UInt64);
+    // health at 0x8
+    QCOMPARE(tree.nodes[kids[1]].offset, 8);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Float);
+    // _pad at 0xC -> hex nodes
+    // score at 0x10
+    // Find the double
+    bool foundDouble = false;
+    for (int k : kids) {
+        if (tree.nodes[k].kind == NodeKind::Double) {
+            QCOMPARE(tree.nodes[k].offset, 0x10);
+            foundDouble = true;
+        }
+    }
+    QVERIFY(foundDouble);
+}
+
+void TestImportSource::computedOffsets() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Computed {\n"
+        "    uint8_t a;\n"
+        "    uint16_t b;\n"
+        "    uint32_t c;\n"
+        "    uint64_t d;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 4);
+    QCOMPARE(tree.nodes[kids[0]].offset, 0);  // uint8_t at 0
+    QCOMPARE(tree.nodes[kids[1]].offset, 1);  // uint16_t at 1
+    QCOMPARE(tree.nodes[kids[2]].offset, 3);  // uint32_t at 3
+    QCOMPARE(tree.nodes[kids[3]].offset, 7);  // uint64_t at 7
+}
+
+void TestImportSource::mixedOffsetsAutoDetect() {
+    // If any field has a comment offset, all should use comment mode
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Mixed {\n"
+        "    uint32_t a; // 0x0\n"
+        "    uint32_t b;\n"
+        "    uint32_t c; // 0x10\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(tree.nodes[kids[0]].offset, 0);
+    // b has no comment offset, in comment mode it gets computed offset 4
+    QCOMPARE(tree.nodes[kids[1]].offset, 4);
+    // c has comment offset 0x10
+    QCOMPARE(tree.nodes[kids[2]].offset, 0x10);
+}
+
+void TestImportSource::multiStruct() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct A {\n"
+        "    int x;\n"
+        "};\n"
+        "struct B {\n"
+        "    float y;\n"
+        "};\n"
+        "struct C {\n"
+        "    double z;\n"
+        "};\n"
+    ));
+    QCOMPARE(countRoots(tree), 3);
+}
+
+void TestImportSource::pointerCrossRef() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct A {\n"
+        "    int value;\n"
+        "};\n"
+        "struct B {\n"
+        "    A* ref;\n"
+        "};\n"
+    ));
+    // Find B's pointer field
+    int bIdx = -1;
+    for (int i = 0; i < tree.nodes.size(); i++) {
+        if (tree.nodes[i].name == QStringLiteral("B") && tree.nodes[i].parentId == 0) {
+            bIdx = i; break;
+        }
+    }
+    QVERIFY(bIdx >= 0);
+    auto kids = childrenOf(tree, tree.nodes[bIdx].id);
+    QCOMPARE(kids.size(), 1);
+    QVERIFY(tree.nodes[kids[0]].refId != 0);
+    // Should point to A
+    int aIdx = tree.indexOfId(tree.nodes[kids[0]].refId);
+    QVERIFY(aIdx >= 0);
+    QCOMPARE(tree.nodes[aIdx].name, QStringLiteral("A"));
+}
+
+void TestImportSource::forwardDeclaration() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Bar;\n"
+        "struct Foo {\n"
+        "    Bar* pBar;\n"
+        "};\n"
+        "struct Bar {\n"
+        "    int val;\n"
+        "};\n"
+    ));
+    QCOMPARE(countRoots(tree), 2);
+    // Foo's pBar should resolve to Bar
+    int fooIdx = -1;
+    for (int i = 0; i < tree.nodes.size(); i++) {
+        if (tree.nodes[i].name == QStringLiteral("Foo") && tree.nodes[i].parentId == 0) {
+            fooIdx = i; break;
+        }
+    }
+    QVERIFY(fooIdx >= 0);
+    auto kids = childrenOf(tree, tree.nodes[fooIdx].id);
+    QCOMPARE(kids.size(), 1);
+    QVERIFY(tree.nodes[kids[0]].refId != 0);
+}
+
+void TestImportSource::unionPickFirst() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct WithUnion {\n"
+        "    union {\n"
+        "        float asFloat;\n"
+        "        uint32_t asInt;\n"
+        "    };\n"
+        "    int after;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    // Should have 2 fields: asFloat (first union member) + after
+    QCOMPARE(kids.size(), 2);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Float);
+    QCOMPARE(tree.nodes[kids[0]].name, QStringLiteral("asFloat"));
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Int32);
+    QCOMPARE(tree.nodes[kids[1]].name, QStringLiteral("after"));
+}
+
+void TestImportSource::paddingFieldExpansion() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Padded {\n"
+        "    uint8_t _pad0000[0x10];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    // 0x10 = 16 bytes, should be 2x Hex64 (best fit)
+    QCOMPARE(kids.size(), 2);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Hex64);
+    QCOMPARE(tree.nodes[kids[0]].offset, 0);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Hex64);
+    QCOMPARE(tree.nodes[kids[1]].offset, 8);
+}
+
+void TestImportSource::staticAssertTailPadding() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Sized {\n"
+        "    uint32_t x;\n"
+        "};\n"
+        "static_assert(sizeof(Sized) == 0x10, \"Size check\");\n"
+    ));
+    // x is 4 bytes, static_assert says 0x10 = 16
+    // Should have tail padding from offset 4 to 16 (12 bytes)
+    int span = tree.structSpan(tree.nodes[0].id);
+    QCOMPARE(span, 0x10);
+}
+
+void TestImportSource::embeddedStruct() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Inner {\n"
+        "    int a;\n"
+        "};\n"
+        "struct Outer {\n"
+        "    Inner embedded;\n"
+        "    float after;\n"
+        "};\n"
+    ));
+    int outerIdx = -1;
+    for (int i = 0; i < tree.nodes.size(); i++) {
+        if (tree.nodes[i].name == QStringLiteral("Outer") && tree.nodes[i].parentId == 0) {
+            outerIdx = i; break;
+        }
+    }
+    QVERIFY(outerIdx >= 0);
+    auto kids = childrenOf(tree, tree.nodes[outerIdx].id);
+    QCOMPARE(kids.size(), 2);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Struct);
+    QCOMPARE(tree.nodes[kids[0]].structTypeName, QStringLiteral("Inner"));
+    QVERIFY(tree.nodes[kids[0]].refId != 0);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Float);
+}
+
+void TestImportSource::typedefBasic() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "typedef uint32_t MyInt;\n"
+        "struct TD {\n"
+        "    MyInt value;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::UInt32);
+}
+
+void TestImportSource::constVolatileQualifiers() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Quals {\n"
+        "    const uint32_t a;\n"
+        "    volatile int32_t b;\n"
+        "    const volatile uint8_t c;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 3);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::UInt32);
+    QCOMPARE(tree.nodes[kids[1]].kind, NodeKind::Int32);
+    QCOMPARE(tree.nodes[kids[2]].kind, NodeKind::UInt8);
+}
+
+void TestImportSource::structPrefixOnType() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Inner {\n"
+        "    int val;\n"
+        "};\n"
+        "struct Outer {\n"
+        "    struct Inner member;\n"
+        "};\n"
+    ));
+    int outerIdx = -1;
+    for (int i = 0; i < tree.nodes.size(); i++) {
+        if (tree.nodes[i].name == QStringLiteral("Outer") && tree.nodes[i].parentId == 0) {
+            outerIdx = i; break;
+        }
+    }
+    QVERIFY(outerIdx >= 0);
+    auto kids = childrenOf(tree, tree.nodes[outerIdx].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Struct);
+    QCOMPARE(tree.nodes[kids[0]].structTypeName, QStringLiteral("Inner"));
+}
+
+void TestImportSource::bitfieldSkipped() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct BF {\n"
+        "    uint32_t normal;\n"
+        "    uint32_t bitA : 4;\n"
+        "    uint32_t bitB : 12;\n"
+        "    uint32_t after;\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    // Bitfields should be skipped, only normal + after
+    QCOMPARE(kids.size(), 2);
+    QCOMPARE(tree.nodes[kids[0]].name, QStringLiteral("normal"));
+    QCOMPARE(tree.nodes[kids[1]].name, QStringLiteral("after"));
+}
+
+void TestImportSource::hexArraySizes() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct HexArr {\n"
+        "    uint8_t data[0x20];\n"
+        "};\n"
+    ));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Array);
+    QCOMPARE(tree.nodes[kids[0]].arrayLen, 0x20);
+}
+
+void TestImportSource::windowsStylePEB() {
+    // Test with Windows PEB-style struct (no comment offsets)
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct PEB64 {\n"
+        "    BOOLEAN InheritedAddressSpace;\n"
+        "    BOOLEAN ReadImageFileExecOptions;\n"
+        "    BOOLEAN BeingDebugged;\n"
+        "    BOOLEAN BitField;\n"
+        "    PVOID Mutant;\n"
+        "    PVOID ImageBaseAddress;\n"
+        "};\n"
+    ));
+    QCOMPARE(countRoots(tree), 1);
+    QCOMPARE(tree.nodes[0].name, QStringLiteral("PEB64"));
+    auto kids = childrenOf(tree, tree.nodes[0].id);
+    QCOMPARE(kids.size(), 6);
+    // First 4 are BOOLEAN (UInt8)
+    for (int i = 0; i < 4; i++)
+        QCOMPARE(tree.nodes[kids[i]].kind, NodeKind::UInt8);
+    // Last 2 are PVOID (Pointer64)
+    QCOMPARE(tree.nodes[kids[4]].kind, NodeKind::Pointer64);
+    QCOMPARE(tree.nodes[kids[5]].kind, NodeKind::Pointer64);
+}
+
+void TestImportSource::classKeyword() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "class MyClass {\n"
+        "    int value;\n"
+        "};\n"
+    ));
+    QCOMPARE(countRoots(tree), 1);
+    QCOMPARE(tree.nodes[0].classKeyword, QStringLiteral("class"));
+}
+
+void TestImportSource::inheritanceSkipped() {
+    NodeTree tree = importFromSource(QStringLiteral(
+        "struct Base {\n"
+        "    int a;\n"
+        "};\n"
+        "struct Derived : public Base {\n"
+        "    float b;\n"
+        "};\n"
+    ));
+    QCOMPARE(countRoots(tree), 2);
+    int derivedIdx = -1;
+    for (int i = 0; i < tree.nodes.size(); i++) {
+        if (tree.nodes[i].name == QStringLiteral("Derived") && tree.nodes[i].parentId == 0) {
+            derivedIdx = i; break;
+        }
+    }
+    QVERIFY(derivedIdx >= 0);
+    auto kids = childrenOf(tree, tree.nodes[derivedIdx].id);
+    QCOMPARE(kids.size(), 1);
+    QCOMPARE(tree.nodes[kids[0]].kind, NodeKind::Float);
+}
+
+void TestImportSource::basicRoundTrip() {
+    // Build a simple tree manually, export it, then re-import and compare
+    NodeTree original;
+    {
+        Node s;
+        s.kind = NodeKind::Struct;
+        s.name = QStringLiteral("RoundTrip");
+        s.structTypeName = QStringLiteral("RoundTrip");
+        s.parentId = 0;
+        s.offset = 0;
+        int sIdx = original.addNode(s);
+        uint64_t sId = original.nodes[sIdx].id;
+
+        Node f1;
+        f1.kind = NodeKind::UInt32;
+        f1.name = QStringLiteral("field_a");
+        f1.parentId = sId;
+        f1.offset = 0;
+        original.addNode(f1);
+
+        Node f2;
+        f2.kind = NodeKind::Float;
+        f2.name = QStringLiteral("field_b");
+        f2.parentId = sId;
+        f2.offset = 4;
+        original.addNode(f2);
+
+        Node f3;
+        f3.kind = NodeKind::UInt64;
+        f3.name = QStringLiteral("field_c");
+        f3.parentId = sId;
+        f3.offset = 8;
+        original.addNode(f3);
+    }
+
+    // Create source text that matches what generator would produce
+    QString source = QStringLiteral(
+        "struct RoundTrip {\n"
+        "    uint32_t field_a; // 0x0\n"
+        "    float field_b; // 0x4\n"
+        "    uint64_t field_c; // 0x8\n"
+        "};\n"
+        "static_assert(sizeof(RoundTrip) == 0x10, \"Size mismatch\");\n"
+    );
+
+    NodeTree reimported = importFromSource(source);
+    QCOMPARE(countRoots(reimported), 1);
+    QCOMPARE(reimported.nodes[0].name, QStringLiteral("RoundTrip"));
+
+    auto origKids = childrenOf(original, original.nodes[0].id);
+    auto reimpKids = childrenOf(reimported, reimported.nodes[0].id);
+
+    // Compare field count (reimported may have extra padding nodes from static_assert)
+    // Check that the first 3 fields match
+    QVERIFY(reimpKids.size() >= 3);
+    for (int i = 0; i < 3; i++) {
+        QCOMPARE(reimported.nodes[reimpKids[i]].kind, original.nodes[origKids[i]].kind);
+        QCOMPARE(reimported.nodes[reimpKids[i]].name, original.nodes[origKids[i]].name);
+        QCOMPARE(reimported.nodes[reimpKids[i]].offset, original.nodes[origKids[i]].offset);
+    }
+}
+
+QTEST_MAIN(TestImportSource)
+#include "test_import_source.moc"

tests/test_import_xml.cpp

@@ -0,0 +1,70 @@
+#include <QtTest/QtTest>
+#include "core.h"
+#include "import_reclass_xml.h"
+
+using namespace rcx;
+
+class TestImportXml : public QObject {
+    Q_OBJECT
+private slots:
+    void importSmallXml();
+};
+
+void TestImportXml::importSmallXml() {
+    // Create a minimal XML in a temp file and test parsing
+    QTemporaryFile tmp;
+    tmp.setAutoRemove(true);
+    QVERIFY(tmp.open());
+    tmp.write(R"(<?xml version="1.0" encoding="UTF-8"?>
+<ReClass>
+    <!--ReClassEx-->
+    <Class Name="TestClass" Type="28" Comment="" Offset="0" strOffset="0" Code="">
+        <Node Name="vtable" Type="9" Size="8" bHidden="false" Comment=""/>
+        <Node Name="health" Type="13" Size="4" bHidden="false" Comment=""/>
+        <Node Name="name" Type="18" Size="32" bHidden="false" Comment=""/>
+        <Node Name="position" Type="23" Size="12" bHidden="false" Comment=""/>
+        <Node Name="pNext" Type="8" Size="8" bHidden="false" Comment="" Pointer="TestClass"/>
+    </Class>
+</ReClass>
+)");
+    tmp.flush();
+
+    QString error;
+    NodeTree tree = importReclassXml(tmp.fileName(), &error);
+    QVERIFY2(!tree.nodes.isEmpty(), qPrintable(error));
+
+    // Should have 1 root struct + 5 children = 6 nodes
+    QCOMPARE(tree.nodes.size(), 6);
+
+    // Root struct
+    QCOMPARE(tree.nodes[0].kind, NodeKind::Struct);
+    QCOMPARE(tree.nodes[0].name, QStringLiteral("TestClass"));
+
+    // vtable = Int64
+    QCOMPARE(tree.nodes[1].kind, NodeKind::Int64);
+    QCOMPARE(tree.nodes[1].name, QStringLiteral("vtable"));
+    QCOMPARE(tree.nodes[1].offset, 0);
+
+    // health = Float
+    QCOMPARE(tree.nodes[2].kind, NodeKind::Float);
+    QCOMPARE(tree.nodes[2].name, QStringLiteral("health"));
+    QCOMPARE(tree.nodes[2].offset, 8);
+
+    // name = UTF8 with strLen=32
+    QCOMPARE(tree.nodes[3].kind, NodeKind::UTF8);
+    QCOMPARE(tree.nodes[3].strLen, 32);
+    QCOMPARE(tree.nodes[3].offset, 12);
+
+    // position = Vec3
+    QCOMPARE(tree.nodes[4].kind, NodeKind::Vec3);
+    QCOMPARE(tree.nodes[4].offset, 44);
+
+    // pNext = Pointer64 with resolved refId
+    QCOMPARE(tree.nodes[5].kind, NodeKind::Pointer64);
+    QCOMPARE(tree.nodes[5].name, QStringLiteral("pNext"));
+    QVERIFY(tree.nodes[5].refId != 0);
+    QCOMPARE(tree.nodes[5].refId, tree.nodes[0].id); // points to TestClass
+}
+
+QTEST_MAIN(TestImportXml)
+#include "test_import_xml.moc"

tests/test_new_features.cpp

@@ -304,39 +304,6 @@ private slots:
         QVERIFY(result.contains("float speed;"));
     }
 
-    void testGenerator_typeAliases_padding() {
-        // Padding gap and tail padding should use aliased uint8_t
-        NodeTree tree;
-        Node root;
-        root.kind = NodeKind::Struct;
-        root.name = "PadTest";
-        root.structTypeName = "PadTest";
-        root.parentId = 0;
-        int ri = tree.addNode(root);
-        uint64_t rootId = tree.nodes[ri].id;
-
-        Node f1;
-        f1.kind = NodeKind::UInt32;
-        f1.name = "a";
-        f1.parentId = rootId;
-        f1.offset = 0;
-        tree.addNode(f1);
-
-        Node f2;
-        f2.kind = NodeKind::UInt32;
-        f2.name = "b";
-        f2.parentId = rootId;
-        f2.offset = 8;  // gap of 4 bytes at offset 4
-        tree.addNode(f2);
-
-        QHash<NodeKind, QString> aliases;
-        aliases[NodeKind::Padding] = "BYTE";
-
-        QString result = renderCpp(tree, rootId, &aliases);
-        // Padding gap should use the alias
-        QVERIFY(result.contains("BYTE _pad"));
-    }
-
     void testGenerator_typeAliases_array() {
         // Array element type should use alias
         NodeTree tree;
@@ -547,134 +514,92 @@ private slots:
     void testWorkspace_simpleTree() {
         auto tree = makeSimpleTree();
         QStandardItemModel model;
-        buildWorkspaceModel(&model, tree, "TestProject.rcx");
+        QVector<TabInfo> tabs = {{ &tree, "TestProject.rcx", nullptr }};
+        buildProjectExplorer(&model, tabs);
 
-        // 1 top-level item (the project)
+        // Single "Project" root
         QCOMPARE(model.rowCount(), 1);
         QStandardItem* project = model.item(0);
-        QCOMPARE(project->text(), QString("TestProject.rcx"));
+        QCOMPARE(project->text(), QString("Project"));
 
-        // Project has 1 child: the Player struct
+        // 1 type directly under Project: Player (no member fields)
         QCOMPARE(project->rowCount(), 1);
-        QStandardItem* player = project->child(0);
-        QVERIFY(player->text().contains("Player"));
-        QVERIFY(player->text().contains("struct"));
-
-        // Player struct has 2 children: health, speed
-        QCOMPARE(player->rowCount(), 2);
-        QVERIFY(player->child(0)->text().contains("health"));
-        QVERIFY(player->child(1)->text().contains("speed"));
+        QVERIFY(project->child(0)->text().contains("Player"));
+        QVERIFY(project->child(0)->text().contains("struct"));
+        QCOMPARE(project->child(0)->rowCount(), 0);
     }
 
     void testWorkspace_twoRootTree() {
         auto tree = makeTwoRootTree();
         QStandardItemModel model;
-        buildWorkspaceModel(&model, tree, "TwoRoot.rcx");
+        QVector<TabInfo> tabs = {{ &tree, "TwoRoot.rcx", nullptr }};
+        buildProjectExplorer(&model, tabs);
 
         QCOMPARE(model.rowCount(), 1);
         QStandardItem* project = model.item(0);
 
-        // 2 root struct children: Alpha and Bravo
+        // 2 types sorted alphabetically: Alpha, Bravo (no field children)
         QCOMPARE(project->rowCount(), 2);
         QVERIFY(project->child(0)->text().contains("Alpha"));
         QVERIFY(project->child(1)->text().contains("Bravo"));
-
-        // Each has 1 field child
-        QCOMPARE(project->child(0)->rowCount(), 1);
-        QVERIFY(project->child(0)->child(0)->text().contains("flagsA"));
-        QCOMPARE(project->child(1)->rowCount(), 1);
-        QVERIFY(project->child(1)->child(0)->text().contains("flagsB"));
+        QCOMPARE(project->child(0)->rowCount(), 0);
+        QCOMPARE(project->child(1)->rowCount(), 0);
     }
 
     void testWorkspace_richTree_rootCount() {
         auto tree = makeRichTree();
         QStandardItemModel model;
-        buildWorkspaceModel(&model, tree, "Rich.rcx");
+        QVector<TabInfo> tabs = {{ &tree, "Rich.rcx", nullptr }};
+        buildProjectExplorer(&model, tabs);
 
         QStandardItem* project = model.item(0);
-        QCOMPARE(project->rowCount(), 3);  // Pet, Cat, Ball
+        QCOMPARE(project->rowCount(), 3);  // Ball, Cat, Pet (sorted)
     }
 
-    void testWorkspace_richTree_petChildren() {
+    void testWorkspace_richTree_sorted() {
         auto tree = makeRichTree();
         QStandardItemModel model;
-        buildWorkspaceModel(&model, tree, "Rich.rcx");
+        QVector<TabInfo> tabs = {{ &tree, "Rich.rcx", nullptr }};
+        buildProjectExplorer(&model, tabs);
 
-        QStandardItem* pet = model.item(0)->child(0);
-        QVERIFY(pet->text().contains("Pet"));
-        // Pet has 2 non-hex children: name (UTF8), owner (Pointer64)
-        QCOMPARE(pet->rowCount(), 2);
-        QVERIFY(pet->child(0)->text().contains("name"));
-        QVERIFY(pet->child(1)->text().contains("owner"));
-    }
-
-    void testWorkspace_richTree_catNesting() {
-        auto tree = makeRichTree();
-        QStandardItemModel model;
-        buildWorkspaceModel(&model, tree, "Rich.rcx");
-
-        QStandardItem* cat = model.item(0)->child(1);
-        QVERIFY(cat->text().contains("Cat"));
-
-        // Find the nested "Pet" struct child (base)
-        QStandardItem* base = nullptr;
-        for (int i = 0; i < cat->rowCount(); i++) {
-            if (cat->child(i)->text().contains("Pet") &&
-                cat->child(i)->text().contains("struct")) {
-                base = cat->child(i);
-                break;
-            }
-        }
-        QVERIFY2(base != nullptr, "Cat should have a nested Pet struct child");
-
-        // base has structId set
-        QVERIFY(base->data(Qt::UserRole + 1).isValid());
-
-        // base should have its own children (name + owner)
-        QCOMPARE(base->rowCount(), 2);
-    }
-
-    void testWorkspace_richTree_ballChildren() {
-        auto tree = makeRichTree();
-        QStandardItemModel model;
-        buildWorkspaceModel(&model, tree, "Rich.rcx");
-
-        QStandardItem* ball = model.item(0)->child(2);
-        QVERIFY(ball->text().contains("Ball"));
-
-        // Ball has 3 non-hex children: speed, position, color
-        QCOMPARE(ball->rowCount(), 3);
-        QVERIFY(ball->child(0)->text().contains("speed"));
-        QVERIFY(ball->child(1)->text().contains("position"));
-        QVERIFY(ball->child(2)->text().contains("color"));
+        QStandardItem* project = model.item(0);
+        // Sorted alphabetically: Ball, Cat, Pet
+        QVERIFY(project->child(0)->text().contains("Ball"));
+        QVERIFY(project->child(1)->text().contains("Cat"));
+        QVERIFY(project->child(2)->text().contains("Pet"));
+        // No member fields under type nodes
+        QCOMPARE(project->child(0)->rowCount(), 0);
+        QCOMPARE(project->child(1)->rowCount(), 0);
+        QCOMPARE(project->child(2)->rowCount(), 0);
     }
 
     void testWorkspace_emptyTree() {
         NodeTree tree;
         QStandardItemModel model;
-        buildWorkspaceModel(&model, tree, "Empty.rcx");
+        QVector<TabInfo> tabs = {{ &tree, "Empty.rcx", nullptr }};
+        buildProjectExplorer(&model, tabs);
 
+        // Still has the "Project" root, just no children
         QCOMPARE(model.rowCount(), 1);
+        QCOMPARE(model.item(0)->text(), QString("Project"));
         QCOMPARE(model.item(0)->rowCount(), 0);
     }
 
     void testWorkspace_structIdRole() {
         auto tree = makeSimpleTree();
         QStandardItemModel model;
-        buildWorkspaceModel(&model, tree, "Test.rcx");
+        QVector<TabInfo> tabs = {{ &tree, "Test.rcx", nullptr }};
+        buildProjectExplorer(&model, tabs);
 
         QStandardItem* project = model.item(0);
-        // Project item should NOT have structId
-        QVERIFY(!project->data(Qt::UserRole + 1).isValid());
+        // Project root has kGroupSentinel
+        QCOMPARE(project->data(Qt::UserRole + 1).toULongLong(), kGroupSentinel);
 
-        // Player struct should have structId
+        // Player type item should have structId
         QStandardItem* player = project->child(0);
         QVERIFY(player->data(Qt::UserRole + 1).isValid());
         QVERIFY(player->data(Qt::UserRole + 1).toULongLong() > 0);
-
-        // health field should NOT have structId
-        QStandardItem* health = player->child(0);
-        QVERIFY(!health->data(Qt::UserRole + 1).isValid());
+        QVERIFY(player->data(Qt::UserRole + 1).toULongLong() != kGroupSentinel);
     }
 
     // ═══════════════════════════════════════════════════

tests/test_options_dialog.cpp

@@ -0,0 +1,291 @@
+#include <QtTest/QTest>
+#include <QApplication>
+#include <QComboBox>
+#include <QCheckBox>
+#include <QTreeWidget>
+#include <QStackedWidget>
+#include <QDialogButtonBox>
+#include <QPushButton>
+#include <QGroupBox>
+#include <QLineEdit>
+#include <QSpinBox>
+#include <QLabel>
+#include "optionsdialog.h"
+#include "themes/thememanager.h"
+
+using namespace rcx;
+
+// Helper: apply the global palette the same way main.cpp does
+static void applyGlobalTheme(const Theme& theme) {
+    QPalette pal;
+    pal.setColor(QPalette::Window,          theme.background);
+    pal.setColor(QPalette::WindowText,      theme.text);
+    pal.setColor(QPalette::Base,            theme.background);
+    pal.setColor(QPalette::AlternateBase,   theme.surface);
+    pal.setColor(QPalette::Text,            theme.text);
+    pal.setColor(QPalette::Button,          theme.button);
+    pal.setColor(QPalette::ButtonText,      theme.text);
+    pal.setColor(QPalette::Highlight,       theme.selection);
+    pal.setColor(QPalette::HighlightedText, theme.text);
+    pal.setColor(QPalette::ToolTipBase,     theme.backgroundAlt);
+    pal.setColor(QPalette::ToolTipText,     theme.text);
+    pal.setColor(QPalette::Mid,             theme.border);
+    pal.setColor(QPalette::Dark,            theme.background);
+    pal.setColor(QPalette::Light,           theme.textFaint);
+    pal.setColor(QPalette::Link,            theme.indHoverSpan);
+
+    pal.setColor(QPalette::Disabled, QPalette::WindowText,      theme.textMuted);
+    pal.setColor(QPalette::Disabled, QPalette::Text,            theme.textMuted);
+    pal.setColor(QPalette::Disabled, QPalette::ButtonText,      theme.textMuted);
+    pal.setColor(QPalette::Disabled, QPalette::HighlightedText, theme.textMuted);
+    pal.setColor(QPalette::Disabled, QPalette::Light,           theme.background);
+
+    qApp->setPalette(pal);
+    qApp->setStyleSheet(QString());
+}
+
+class TestOptionsDialog : public QObject {
+    Q_OBJECT
+private slots:
+
+    void initTestCase() {
+        // Apply theme palette so dialog inherits real colors
+        auto& tm = ThemeManager::instance();
+        applyGlobalTheme(tm.current());
+    }
+
+    void dialogCreatesAllWidgets() {
+        OptionsResult defaults;
+        defaults.themeIndex = 0;
+        defaults.fontName = "JetBrains Mono";
+        defaults.menuBarTitleCase = true;
+        defaults.safeMode = false;
+        defaults.autoStartMcp = false;
+
+        OptionsDialog dlg(defaults);
+
+        // Core widgets exist
+        auto* tree = dlg.findChild<QTreeWidget*>();
+        QVERIFY(tree);
+        auto* pages = dlg.findChild<QStackedWidget*>();
+        QVERIFY(pages);
+        QCOMPARE(pages->count(), 3);
+
+        auto* themeCombo = dlg.findChild<QComboBox*>("themeCombo");
+        QVERIFY(themeCombo);
+        QVERIFY(themeCombo->count() >= 3);
+
+        auto* fontCombo = dlg.findChild<QComboBox*>("fontCombo");
+        QVERIFY(fontCombo);
+        QCOMPARE(fontCombo->count(), 2);
+
+        auto* showIconCheck = dlg.findChild<QCheckBox*>();
+        QVERIFY(showIconCheck);
+
+        auto* buttons = dlg.findChild<QDialogButtonBox*>();
+        QVERIFY(buttons);
+        QVERIFY(buttons->button(QDialogButtonBox::Ok));
+        QVERIFY(buttons->button(QDialogButtonBox::Cancel));
+    }
+
+    void resultReflectsInput() {
+        OptionsResult input;
+        input.themeIndex = 1;
+        input.fontName = "Consolas";
+        input.menuBarTitleCase = false;
+        input.safeMode = true;
+        input.autoStartMcp = true;
+
+        OptionsDialog dlg(input);
+        auto r = dlg.result();
+
+        QCOMPARE(r.themeIndex, 1);
+        QCOMPARE(r.fontName, QString("Consolas"));
+        QCOMPARE(r.menuBarTitleCase, false);
+        QCOMPARE(r.safeMode, true);
+        QCOMPARE(r.autoStartMcp, true);
+    }
+
+    void noStyleSheetOnDialog() {
+        OptionsResult defaults;
+        OptionsDialog dlg(defaults);
+
+        // Dialog itself must have no stylesheet override
+        QVERIFY(dlg.styleSheet().isEmpty());
+
+        // Combo boxes must have no stylesheet override
+        auto* themeCombo = dlg.findChild<QComboBox*>("themeCombo");
+        QVERIFY(themeCombo->styleSheet().isEmpty());
+        auto* fontCombo = dlg.findChild<QComboBox*>("fontCombo");
+        QVERIFY(fontCombo->styleSheet().isEmpty());
+
+        // No child widget should have a stylesheet set
+        for (auto* child : dlg.findChildren<QWidget*>()) {
+            QVERIFY2(child->styleSheet().isEmpty(),
+                      qPrintable(QString("Widget %1 (%2) has unexpected stylesheet: %3")
+                          .arg(child->objectName(),
+                               child->metaObject()->className(),
+                               child->styleSheet())));
+        }
+    }
+
+    void highlightColorDiffersFromBackground() {
+        // Verify the palette Highlight is distinguishable from Window background
+        // This is the root cause of broken hover: if they're the same, hover is invisible
+        auto& tm = ThemeManager::instance();
+        const auto themes = tm.themes();
+        for (const auto& theme : themes) {
+            QVERIFY2(theme.selection != theme.background,
+                      qPrintable(QString("Theme '%1': selection == background (%2)")
+                          .arg(theme.name, theme.background.name())));
+        }
+    }
+
+    void paletteHighlightIsSelection() {
+        // After applying theme, QPalette::Highlight must be theme.selection (not theme.hover)
+        auto& tm = ThemeManager::instance();
+        const auto& theme = tm.current();
+        applyGlobalTheme(theme);
+
+        QPalette pal = qApp->palette();
+        QCOMPARE(pal.color(QPalette::Highlight), theme.selection);
+    }
+
+    void treePageSwitching() {
+        OptionsResult defaults;
+        OptionsDialog dlg(defaults);
+
+        auto* tree = dlg.findChild<QTreeWidget*>();
+        auto* pages = dlg.findChild<QStackedWidget*>();
+        QVERIFY(tree && pages);
+
+        // General is selected by default -> page 0
+        QCOMPARE(pages->currentIndex(), 0);
+
+        // Find "AI Features" item and select it
+        auto* envItem = tree->topLevelItem(0);
+        QVERIFY(envItem);
+        QTreeWidgetItem* aiItem = nullptr;
+        for (int i = 0; i < envItem->childCount(); ++i) {
+            if (envItem->child(i)->text(0) == "AI Features") {
+                aiItem = envItem->child(i);
+                break;
+            }
+        }
+        QVERIFY(aiItem);
+        tree->setCurrentItem(aiItem);
+        QCOMPARE(pages->currentIndex(), 1);
+
+        // Switch back to General
+        QTreeWidgetItem* generalItem = nullptr;
+        for (int i = 0; i < envItem->childCount(); ++i) {
+            if (envItem->child(i)->text(0) == "General") {
+                generalItem = envItem->child(i);
+                break;
+            }
+        }
+        QVERIFY(generalItem);
+        tree->setCurrentItem(generalItem);
+        QCOMPARE(pages->currentIndex(), 0);
+    }
+
+    void searchFilterHidesItems() {
+        OptionsResult defaults;
+        OptionsDialog dlg(defaults);
+
+        auto* search = dlg.findChild<QLineEdit*>();
+        auto* tree = dlg.findChild<QTreeWidget*>();
+        QVERIFY(search && tree);
+
+        auto* envItem = tree->topLevelItem(0);
+        QVERIFY(envItem);
+
+        // All children visible initially
+        for (int i = 0; i < envItem->childCount(); ++i)
+            QVERIFY(!envItem->child(i)->isHidden());
+
+        // Search for "MCP" - should hide General, show AI Features
+        search->setText("MCP");
+        QTreeWidgetItem* generalItem = nullptr;
+        QTreeWidgetItem* aiItem = nullptr;
+        for (int i = 0; i < envItem->childCount(); ++i) {
+            auto* child = envItem->child(i);
+            if (child->text(0) == "General") generalItem = child;
+            if (child->text(0) == "AI Features") aiItem = child;
+        }
+        QVERIFY(generalItem && aiItem);
+        QVERIFY(generalItem->isHidden());
+        QVERIFY(!aiItem->isHidden());
+
+        // Clear search - all visible again
+        search->setText("");
+        QVERIFY(!generalItem->isHidden());
+        QVERIFY(!aiItem->isHidden());
+    }
+
+    void refreshRateSpinBoxExists() {
+        OptionsResult defaults;
+        defaults.refreshMs = 660;
+        OptionsDialog dlg(defaults);
+
+        auto* spin = dlg.findChild<QSpinBox*>("refreshSpin");
+        QVERIFY(spin);
+        QCOMPARE(spin->value(), 660);
+        QCOMPARE(spin->minimum(), 1);
+        QCOMPARE(spin->maximum(), 60000);
+    }
+
+    void refreshRateResultReflectsInput() {
+        OptionsResult input;
+        input.refreshMs = 200;
+        OptionsDialog dlg(input);
+
+        auto r = dlg.result();
+        QCOMPARE(r.refreshMs, 200);
+
+        // Change via spin box
+        auto* spin = dlg.findChild<QSpinBox*>("refreshSpin");
+        QVERIFY(spin);
+        spin->setValue(100);
+        r = dlg.result();
+        QCOMPARE(r.refreshMs, 100);
+    }
+
+    void refreshRateClampsMin() {
+        OptionsResult input;
+        input.refreshMs = 0; // below minimum
+        OptionsDialog dlg(input);
+
+        auto* spin = dlg.findChild<QSpinBox*>("refreshSpin");
+        QVERIFY(spin);
+        // QSpinBox clamps to minimum
+        QCOMPARE(spin->value(), 1);
+    }
+
+    void dialogInheritsPalette() {
+        auto& tm = ThemeManager::instance();
+        const auto& theme = tm.current();
+        applyGlobalTheme(theme);
+
+        OptionsResult defaults;
+        OptionsDialog dlg(defaults);
+        dlg.show();
+        QTest::qWaitForWindowExposed(&dlg);
+
+        // Dialog's effective palette should match the app palette
+        QPalette dlgPal = dlg.palette();
+        QPalette appPal = qApp->palette();
+
+        QCOMPARE(dlgPal.color(QPalette::Window), appPal.color(QPalette::Window));
+        QCOMPARE(dlgPal.color(QPalette::WindowText), appPal.color(QPalette::WindowText));
+        QCOMPARE(dlgPal.color(QPalette::Highlight), appPal.color(QPalette::Highlight));
+        QCOMPARE(dlgPal.color(QPalette::Button), appPal.color(QPalette::Button));
+        QCOMPARE(dlgPal.color(QPalette::ButtonText), appPal.color(QPalette::ButtonText));
+
+        // Highlight must be visible against background
+        QVERIFY(dlgPal.color(QPalette::Highlight) != dlgPal.color(QPalette::Window));
+    }
+};
+
+QTEST_MAIN(TestOptionsDialog)
+#include "test_options_dialog.moc"

tests/test_type_selector.cpp

@@ -8,6 +8,8 @@
 #include <QLineEdit>
 #include <QListView>
 #include <QStringListModel>
+#include <QLabel>
+#include <QFrame>
 #include <Qsci/qsciscintilla.h>
 #include "controller.h"
 #include "typeselectorpopup.h"
@@ -198,6 +200,127 @@ private slots:
         }
     }
 
+    // ── Isolate first-show cost with different window flags ──
+
+    void benchmarkFirstShow() {
+        auto ms = [](qint64 ns) { return QString::number(ns / 1000000.0, 'f', 2); };
+
+        struct FlagTest {
+            const char* name;
+            Qt::WindowFlags flags;
+        };
+        FlagTest tests[] = {
+            {"Qt::Popup|Frameless",         Qt::Popup | Qt::FramelessWindowHint},
+            {"Qt::Tool|Frameless",          Qt::Tool | Qt::FramelessWindowHint},
+            {"Qt::ToolTip",                 Qt::ToolTip},
+            {"Qt::Window|Frameless",        Qt::Window | Qt::FramelessWindowHint},
+            {"Qt::Popup|Frameless (2nd)",   Qt::Popup | Qt::FramelessWindowHint},
+        };
+
+        for (const auto& test : tests) {
+            auto* f = new QFrame(nullptr, test.flags);
+            f->resize(300, 400);
+
+            QElapsedTimer t; t.start();
+            f->show();
+            qint64 t1 = t.nsecsElapsed(); t.restart();
+            QApplication::processEvents();
+            qint64 t2 = t.nsecsElapsed();
+            f->hide();
+            QApplication::processEvents();
+
+            t.restart();
+            f->show();
+            qint64 t3 = t.nsecsElapsed(); t.restart();
+            QApplication::processEvents();
+            qint64 t4 = t.nsecsElapsed();
+            f->hide();
+            QApplication::processEvents();
+
+            qDebug() << "";
+            qDebug().noquote() << QString("=== %1 ===").arg(test.name);
+            qDebug().noquote() << QString("  1st: show=%1ms events=%2ms | 2nd: show=%3ms events=%4ms")
+                .arg(ms(t1)).arg(ms(t2)).arg(ms(t3)).arg(ms(t4));
+            delete f;
+        }
+
+        // TypeSelectorPopup: cold vs after warmUp
+        {
+            auto* popup = new TypeSelectorPopup();
+            TypeEntry dummy;
+            dummy.entryKind = TypeEntry::Primitive;
+            dummy.primitiveKind = NodeKind::Hex8;
+            dummy.displayName = "test";
+            popup->setTypes({dummy});
+
+            QElapsedTimer t; t.start();
+            popup->show();
+            qint64 t1 = t.nsecsElapsed(); t.restart();
+            QApplication::processEvents();
+            qint64 t2 = t.nsecsElapsed();
+            popup->hide();
+            QApplication::processEvents();
+
+            t.restart();
+            popup->show();
+            qint64 t3 = t.nsecsElapsed(); t.restart();
+            QApplication::processEvents();
+            qint64 t4 = t.nsecsElapsed();
+            popup->hide();
+            QApplication::processEvents();
+
+            qDebug() << "";
+            qDebug().noquote() << QString("=== TypeSelectorPopup (cold, Qt::Popup) ===");
+            qDebug().noquote() << QString("  1st: show=%1ms events=%2ms | 2nd: show=%3ms events=%4ms")
+                .arg(ms(t1)).arg(ms(t2)).arg(ms(t3)).arg(ms(t4));
+            delete popup;
+        }
+
+        // Clean order test: dummy popup with children FIRST, then TypeSelectorPopup
+        qDebug() << "";
+        qDebug() << "=== CLEAN: dummy popup first, then TypeSelectorPopup ===";
+        {
+            auto* dummy = new QFrame(nullptr, Qt::Popup | Qt::FramelessWindowHint);
+            dummy->resize(300, 400);
+            auto* dLay = new QVBoxLayout(dummy);
+            dLay->addWidget(new QLabel("dummy"));
+            dLay->addWidget(new QLineEdit);
+            auto* dModel = new QStringListModel(dummy);
+            QStringList dItems; for (int i = 0; i < 10; i++) dItems << "x";
+            dModel->setStringList(dItems);
+            auto* dLv = new QListView; dLv->setModel(dModel);
+            dLay->addWidget(dLv);
+
+            QElapsedTimer t; t.start();
+            dummy->show();
+            qint64 t1 = t.nsecsElapsed(); t.restart();
+            QApplication::processEvents();
+            qint64 t2 = t.nsecsElapsed();
+            dummy->hide();
+            QApplication::processEvents();
+            qDebug().noquote() << QString("  Dummy popup: show=%1ms events=%2ms").arg(ms(t1)).arg(ms(t2));
+            delete dummy;
+        }
+        {
+            auto* popup = new TypeSelectorPopup();
+            TypeEntry e;
+            e.entryKind = TypeEntry::Primitive;
+            e.primitiveKind = NodeKind::Hex8;
+            e.displayName = "test";
+            popup->setTypes({e});
+            popup->resize(300, 400);
+            QElapsedTimer t; t.start();
+            popup->show();
+            qint64 t1 = t.nsecsElapsed(); t.restart();
+            QApplication::processEvents();
+            qint64 t2 = t.nsecsElapsed();
+            popup->hide();
+            QApplication::processEvents();
+            qDebug().noquote() << QString("  TypeSelectorPopup (after dummy): show=%1ms events=%2ms").arg(ms(t1)).arg(ms(t2));
+            delete popup;
+        }
+    }
+
     // ── Popup data model ──
 
     void testPopupListsRootStructs() {

tests/test_validation.cpp

@@ -57,8 +57,8 @@ static void buildValidationTree(NodeTree& tree) {
     field(46, NodeKind::Hex32,      "field_h32");
     field(50, NodeKind::Hex64,      "field_h64");
     field(58, NodeKind::Pointer64,  "field_ptr");
-    field(66, NodeKind::Padding,    "pad0");
-    tree.nodes.last().arrayLen = 6;
+    field(66, NodeKind::Hex32,      "pad0");
+    field(70, NodeKind::Hex16,      "pad1");
     fieldArr(72, NodeKind::UInt32, 4, "field_arr");
 }
 
@@ -725,9 +725,9 @@ private slots:
         QCOMPARE(m_doc->undoStack.count(), 0);
     }
 
-    // ── changeNodeKind size transitions: shrink inserts padding ──
+    // ── changeNodeKind size transitions: shrink inserts hex nodes ──
 
-    void testChangeKindShrinkInsertsPadding() {
+    void testChangeKindShrinkInsertsHexNodes() {
         int idx = findNode(m_doc->tree, "field_u32");
         QVERIFY(idx >= 0);
         QCOMPARE(m_doc->tree.nodes[idx].kind, NodeKind::UInt32);  // 4 bytes
@@ -737,7 +737,7 @@ private slots:
         QApplication::processEvents();
 
         QCOMPARE(m_doc->tree.nodes[idx].kind, NodeKind::UInt8);
-        // Should have inserted padding nodes (Hex16 + Hex8 = 3 bytes, or similar)
+        // Should have inserted hex nodes (Hex16 + Hex8 = 3 bytes, or similar)
         QVERIFY(m_doc->tree.nodes.size() > origCount);
 
         // Undo restores everything
@@ -985,37 +985,6 @@ private slots:
         QVERIFY(!m_editor->isEditing());
     }
 
-    // ── Editor: padding value edit blocked, name/type still work ──
-
-    void testPaddingEditRestrictions() {
-        m_ctrl->refresh();
-        QApplication::processEvents();
-
-        ComposeResult result = m_doc->compose();
-        m_editor->applyDocument(result);
-        QApplication::processEvents();
-
-        // Find padding line
-        int padLine = -1;
-        for (int i = 0; i < result.meta.size(); i++) {
-            if (result.meta[i].nodeKind == NodeKind::Padding &&
-                result.meta[i].lineKind == LineKind::Field) {
-                padLine = i;
-                break;
-            }
-        }
-        QVERIFY(padLine >= 0);
-
-        // Value edit rejected
-        QVERIFY(!m_editor->beginInlineEdit(EditTarget::Value, padLine));
-
-        // Type edit accepted
-        bool ok = m_editor->beginInlineEdit(EditTarget::Type, padLine);
-        QVERIFY(ok);
-        m_editor->cancelInlineEdit();
-        QApplication::processEvents();
-    }
-
     // ── Editor: struct header rejects value edit ──
 
     void testStructHeaderRejectsValueEdit() {

tests/test_windbg_provider.cpp

@@ -325,7 +325,7 @@ private slots:
         // Verify it's not all zeros (the old failure mode)
         bool allZero = true;
         for (int i = 0; i < data.size(); ++i) {
-            if (data[i] != 0) { allZero = false; break; }
+            if (data[i] != '\0') { allZero = false; break; }
         }
         QVERIFY2(!allZero, "Data is all zeros — background thread read failed");
     }

tools/rcx-mcp-stdio.cpp

@@ -15,6 +15,9 @@
 #include <windows.h>
 #include <io.h>
 #include <fcntl.h>
+#else
+#include <unistd.h>
+#include <sys/select.h>
 #endif
 
 int main(int argc, char* argv[]) {