Build XCUI splitter foundation and test harness

2026-04-06 03:17:53 +08:00
parent dc17685099
commit c7dc8d7484
77 changed files with 4749 additions and 542 deletions
--- a/tests/UI/CMakeLists.txt
+++ b/tests/UI/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+
+project(XCEngine_UITests)
+
+add_subdirectory(Core)
+add_subdirectory(Runtime)
+add_subdirectory(Editor)
--- a/tests/UI/Core/CMakeLists.txt
+++ b/tests/UI/Core/CMakeLists.txt
@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.15)
+
+project(XCEngine_CoreUITests)
+
+add_subdirectory(unit)
+add_subdirectory(integration)
+
+add_custom_target(core_ui_unit_tests
+    DEPENDS
+        core_ui_tests
+)
+
+add_custom_target(core_ui_all_tests
+    DEPENDS
+        core_ui_unit_tests
+        core_ui_integration_tests
+)
--- a/tests/UI/Core/integration/CMakeLists.txt
+++ b/tests/UI/Core/integration/CMakeLists.txt
@@ -0,0 +1 @@
+add_custom_target(core_ui_integration_tests)
--- a/tests/UI/Core/integration/README.md
+++ b/tests/UI/Core/integration/README.md
@@ -0,0 +1,8 @@
+# Core UI Integration Notes
+
+The core XCUI lane currently validates shared primitives through automated unit tests.
+
+Interactive validation belongs to:
+
+- `tests/UI/Runtime/integration/` for game/runtime UI
+- `tests/UI/Editor/integration/` for editor UI
--- a/tests/UI/Core/unit/CMakeLists.txt
+++ b/tests/UI/Core/unit/CMakeLists.txt
@@ -0,0 +1,40 @@
+set(CORE_UI_TEST_SOURCES
+    ${CMAKE_SOURCE_DIR}/tests/UI/Core/unit/test_ui_shortcut_scope.cpp
+    ${CMAKE_SOURCE_DIR}/tests/UI/Core/unit/test_ui_splitter_layout.cpp
+    ${CMAKE_SOURCE_DIR}/tests/UI/Core/unit/test_ui_splitter_interaction.cpp
+    # Migration bridge: legacy XCUI unit coverage still lives under tests/Core/UI
+    # until it is moved into tests/UI/Core/unit without changing behavior.
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_core.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_expansion_model.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_flat_hierarchy_helpers.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_input_dispatcher.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_keyboard_navigation_model.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_property_edit_model.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_layout_engine.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_selection_model.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_text_editing.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_text_input_controller.cpp
+)
+
+add_executable(core_ui_tests ${CORE_UI_TEST_SOURCES})
+
+if(MSVC)
+    set_target_properties(core_ui_tests PROPERTIES
+        LINK_FLAGS "/NODEFAULTLIB:libcpmt.lib /NODEFAULTLIB:libcmt.lib"
+    )
+endif()
+
+target_link_libraries(core_ui_tests
+    PRIVATE
+    XCEngine
+    GTest::gtest
+    GTest::gtest_main
+)
+
+target_include_directories(core_ui_tests PRIVATE
+    ${CMAKE_SOURCE_DIR}/engine/include
+    ${CMAKE_SOURCE_DIR}/tests/Fixtures
+)
+
+include(GoogleTest)
+gtest_discover_tests(core_ui_tests)
--- a/tests/UI/Core/unit/test_ui_shortcut_scope.cpp
+++ b/tests/UI/Core/unit/test_ui_shortcut_scope.cpp
@@ -0,0 +1,171 @@
+#include <gtest/gtest.h>
+
+#include <XCEngine/Input/InputTypes.h>
+#include <XCEngine/UI/Input/UIInputDispatcher.h>
+#include <XCEngine/UI/Input/UIShortcutRegistry.h>
+
+namespace {
+
+using XCEngine::Input::KeyCode;
+using XCEngine::UI::UIInputDispatchDecision;
+using XCEngine::UI::UIInputDispatcher;
+using XCEngine::UI::UIInputEvent;
+using XCEngine::UI::UIInputEventType;
+using XCEngine::UI::UIInputPath;
+using XCEngine::UI::UIShortcutBinding;
+using XCEngine::UI::UIShortcutContext;
+using XCEngine::UI::UIShortcutRegistry;
+using XCEngine::UI::UIShortcutScope;
+
+UIInputEvent MakeCtrlPEvent() {
+    UIInputEvent event = {};
+    event.type = UIInputEventType::KeyDown;
+    event.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    event.modifiers.control = true;
+    return event;
+}
+
+} // namespace
+
+TEST(UIShortcutScopeTest, RegistryUsesCommandScopeInsteadOfActivePathForShortcutResolution) {
+    UIShortcutRegistry registry = {};
+
+    UIShortcutBinding dragWidgetBinding = {};
+    dragWidgetBinding.scope = UIShortcutScope::Widget;
+    dragWidgetBinding.ownerId = 91u;
+    dragWidgetBinding.chord.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    dragWidgetBinding.chord.modifiers.control = true;
+    dragWidgetBinding.commandId = "drag.widget.command";
+    registry.RegisterBinding(dragWidgetBinding);
+
+    UIShortcutBinding panelBinding = {};
+    panelBinding.scope = UIShortcutScope::Panel;
+    panelBinding.ownerId = 20u;
+    panelBinding.chord.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    panelBinding.chord.modifiers.control = true;
+    panelBinding.commandId = "panel.command";
+    registry.RegisterBinding(panelBinding);
+
+    UIShortcutContext context = {};
+    context.focusedPath = { 10u, 20u, 30u };
+    context.activePath = { 90u, 91u };
+    context.commandScope.path = context.focusedPath;
+    context.commandScope.windowId = 10u;
+    context.commandScope.panelId = 20u;
+    context.commandScope.widgetId = 30u;
+
+    const auto match = registry.Match(MakeCtrlPEvent(), context);
+    ASSERT_TRUE(match.matched);
+    EXPECT_EQ(match.binding.commandId, "panel.command");
+}
+
+TEST(UIShortcutScopeTest, RegistryPrefersPanelThenWindowThenGlobalWithinFocusedCommandScope) {
+    UIShortcutRegistry registry = {};
+
+    UIShortcutBinding globalBinding = {};
+    globalBinding.scope = UIShortcutScope::Global;
+    globalBinding.chord.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    globalBinding.chord.modifiers.control = true;
+    globalBinding.commandId = "global.command";
+    registry.RegisterBinding(globalBinding);
+
+    UIShortcutBinding windowBinding = {};
+    windowBinding.scope = UIShortcutScope::Window;
+    windowBinding.ownerId = 10u;
+    windowBinding.chord.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    windowBinding.chord.modifiers.control = true;
+    windowBinding.commandId = "window.command";
+    registry.RegisterBinding(windowBinding);
+
+    UIShortcutBinding panelBinding = {};
+    panelBinding.scope = UIShortcutScope::Panel;
+    panelBinding.ownerId = 20u;
+    panelBinding.chord.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    panelBinding.chord.modifiers.control = true;
+    panelBinding.commandId = "panel.command";
+    registry.RegisterBinding(panelBinding);
+
+    UIShortcutContext context = {};
+    context.focusedPath = { 10u, 20u, 30u };
+    context.commandScope.path = context.focusedPath;
+    context.commandScope.windowId = 10u;
+    context.commandScope.panelId = 20u;
+    context.commandScope.widgetId = 30u;
+
+    const auto match = registry.Match(MakeCtrlPEvent(), context);
+    ASSERT_TRUE(match.matched);
+    EXPECT_EQ(match.binding.commandId, "panel.command");
+}
+
+TEST(UIShortcutScopeTest, InputDispatcherConsumesShortcutBeforeRoutingWhenCommandScopeMatches) {
+    UIInputDispatcher dispatcher{};
+    dispatcher.GetFocusController().SetFocusedPath({ 10u, 20u, 30u });
+
+    UIShortcutContext shortcutContext = {};
+    shortcutContext.commandScope.path = { 10u, 20u, 30u };
+    shortcutContext.commandScope.windowId = 10u;
+    shortcutContext.commandScope.panelId = 20u;
+    shortcutContext.commandScope.widgetId = 30u;
+    dispatcher.SetShortcutContext(shortcutContext);
+
+    UIShortcutBinding binding = {};
+    binding.scope = UIShortcutScope::Panel;
+    binding.ownerId = 20u;
+    binding.chord.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    binding.chord.modifiers.control = true;
+    binding.commandId = "panel.command";
+    dispatcher.GetShortcutRegistry().RegisterBinding(binding);
+
+    bool handlerCalled = false;
+    const auto summary = dispatcher.Dispatch(
+        MakeCtrlPEvent(),
+        {},
+        [&handlerCalled](const auto&) {
+            handlerCalled = true;
+            return UIInputDispatchDecision{};
+        });
+
+    EXPECT_TRUE(summary.shortcutMatched);
+    EXPECT_TRUE(summary.shortcutHandled);
+    EXPECT_FALSE(summary.shortcutSuppressed);
+    EXPECT_EQ(summary.commandId, "panel.command");
+    EXPECT_EQ(summary.shortcutScope, UIShortcutScope::Panel);
+    EXPECT_EQ(summary.shortcutOwnerId, 20u);
+    EXPECT_FALSE(handlerCalled);
+}
+
+TEST(UIShortcutScopeTest, InputDispatcherSuppressesShortcutWhileTextInputIsActiveButStillRoutesEvent) {
+    UIInputDispatcher dispatcher{};
+    dispatcher.GetFocusController().SetFocusedPath({ 10u, 20u, 30u });
+
+    UIShortcutContext shortcutContext = {};
+    shortcutContext.commandScope.path = { 10u, 20u, 30u };
+    shortcutContext.commandScope.windowId = 10u;
+    shortcutContext.commandScope.panelId = 20u;
+    shortcutContext.commandScope.widgetId = 30u;
+    shortcutContext.textInputActive = true;
+    dispatcher.SetShortcutContext(shortcutContext);
+
+    UIShortcutBinding binding = {};
+    binding.scope = UIShortcutScope::Panel;
+    binding.ownerId = 20u;
+    binding.chord.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    binding.chord.modifiers.control = true;
+    binding.commandId = "panel.command";
+    dispatcher.GetShortcutRegistry().RegisterBinding(binding);
+
+    bool handlerCalled = false;
+    const auto summary = dispatcher.Dispatch(
+        MakeCtrlPEvent(),
+        {},
+        [&handlerCalled](const auto&) {
+            handlerCalled = true;
+            return UIInputDispatchDecision{};
+        });
+
+    EXPECT_TRUE(summary.shortcutMatched);
+    EXPECT_FALSE(summary.shortcutHandled);
+    EXPECT_TRUE(summary.shortcutSuppressed);
+    EXPECT_EQ(summary.commandId, "panel.command");
+    EXPECT_TRUE(handlerCalled);
+}
--- a/tests/UI/Core/unit/test_ui_splitter_interaction.cpp
+++ b/tests/UI/Core/unit/test_ui_splitter_interaction.cpp
@@ -0,0 +1,112 @@
+#include <gtest/gtest.h>
+
+#include <XCEngine/UI/Layout/UISplitterLayout.h>
+#include <XCEngine/UI/Widgets/UISplitterInteraction.h>
+
+namespace {
+
+using XCEngine::UI::UIPoint;
+using XCEngine::UI::UIRect;
+using XCEngine::UI::Layout::UILayoutAxis;
+using XCEngine::UI::Layout::ArrangeUISplitter;
+using XCEngine::UI::Layout::UISplitterConstraints;
+using XCEngine::UI::Layout::UISplitterLayoutResult;
+using XCEngine::UI::Layout::UISplitterMetrics;
+using XCEngine::UI::Widgets::BeginUISplitterDrag;
+using XCEngine::UI::Widgets::EndUISplitterDrag;
+using XCEngine::UI::Widgets::ExpandUISplitterHandleHitRect;
+using XCEngine::UI::Widgets::HitTestUISplitterHandle;
+using XCEngine::UI::Widgets::UISplitterDragState;
+using XCEngine::UI::Widgets::UpdateUISplitterDrag;
+
+void ExpectRect(
+    const UIRect& rect,
+    float x,
+    float y,
+    float width,
+    float height) {
+    EXPECT_FLOAT_EQ(rect.x, x);
+    EXPECT_FLOAT_EQ(rect.y, y);
+    EXPECT_FLOAT_EQ(rect.width, width);
+    EXPECT_FLOAT_EQ(rect.height, height);
+}
+
+} // namespace
+
+TEST(UISplitterInteractionTest, HorizontalSplitterHitRectExpandsAcrossDividerWidth) {
+    const UIRect hitRect = ExpandUISplitterHandleHitRect(
+        UIRect(240.0f, 24.0f, 8.0f, 260.0f),
+        UILayoutAxis::Horizontal,
+        4.0f);
+
+    ExpectRect(hitRect, 236.0f, 24.0f, 16.0f, 260.0f);
+}
+
+TEST(UISplitterInteractionTest, VerticalSplitterHitRectExpandsAcrossDividerHeight) {
+    const UIRect hitRect = ExpandUISplitterHandleHitRect(
+        UIRect(16.0f, 180.0f, 420.0f, 10.0f),
+        UILayoutAxis::Vertical,
+        5.0f);
+
+    ExpectRect(hitRect, 16.0f, 175.0f, 420.0f, 20.0f);
+}
+
+TEST(UISplitterInteractionTest, HitTestUsesExpandedHorizontalHandleRect) {
+    EXPECT_TRUE(HitTestUISplitterHandle(
+        UIRect(240.0f, 24.0f, 8.0f, 260.0f),
+        UILayoutAxis::Horizontal,
+        UIPoint(236.5f, 80.0f),
+        4.0f));
+    EXPECT_FALSE(HitTestUISplitterHandle(
+        UIRect(240.0f, 24.0f, 8.0f, 260.0f),
+        UILayoutAxis::Horizontal,
+        UIPoint(235.0f, 80.0f),
+        4.0f));
+}
+
+TEST(UISplitterInteractionTest, HitTestUsesExpandedVerticalHandleRect) {
+    EXPECT_TRUE(HitTestUISplitterHandle(
+        UIRect(16.0f, 180.0f, 420.0f, 10.0f),
+        UILayoutAxis::Vertical,
+        UIPoint(90.0f, 176.0f),
+        5.0f));
+    EXPECT_FALSE(HitTestUISplitterHandle(
+        UIRect(16.0f, 180.0f, 420.0f, 10.0f),
+        UILayoutAxis::Vertical,
+        UIPoint(90.0f, 174.0f),
+        5.0f));
+}
+
+TEST(UISplitterInteractionTest, DragUpdateClampsPrimaryExtentAgainstConstraints) {
+    UISplitterConstraints constraints = {};
+    constraints.primaryMin = 120.0f;
+    constraints.secondaryMin = 180.0f;
+    const UISplitterMetrics metrics = { 10.0f, 18.0f };
+    const UIRect bounds(0.0f, 0.0f, 500.0f, 180.0f);
+    const UISplitterLayoutResult initialLayout = ArrangeUISplitter(
+        bounds,
+        UILayoutAxis::Horizontal,
+        0.5f,
+        constraints,
+        metrics);
+
+    UISplitterDragState dragState = {};
+    ASSERT_TRUE(BeginUISplitterDrag(
+        42u,
+        UILayoutAxis::Horizontal,
+        bounds,
+        initialLayout,
+        constraints,
+        metrics,
+        UIPoint(initialLayout.handleRect.x + 5.0f, 90.0f),
+        dragState));
+
+    UISplitterLayoutResult updatedLayout = {};
+    ASSERT_TRUE(UpdateUISplitterDrag(dragState, UIPoint(80.0f, 90.0f), updatedLayout));
+    EXPECT_FLOAT_EQ(updatedLayout.primaryExtent, 120.0f);
+    EXPECT_FLOAT_EQ(updatedLayout.secondaryExtent, 370.0f);
+
+    EndUISplitterDrag(dragState);
+    EXPECT_FALSE(dragState.active);
+    EXPECT_EQ(dragState.ownerId, 0u);
+}
--- a/tests/UI/Core/unit/test_ui_splitter_layout.cpp
+++ b/tests/UI/Core/unit/test_ui_splitter_layout.cpp
@@ -0,0 +1,76 @@
+#include <gtest/gtest.h>
+
+#include <XCEngine/UI/Layout/UISplitterLayout.h>
+
+namespace {
+
+using XCEngine::UI::UIRect;
+using XCEngine::UI::Layout::ArrangeUISplitter;
+using XCEngine::UI::Layout::UILayoutAxis;
+using XCEngine::UI::Layout::UISplitterConstraints;
+using XCEngine::UI::Layout::UISplitterMetrics;
+
+void ExpectRect(
+    const UIRect& rect,
+    float x,
+    float y,
+    float width,
+    float height) {
+    EXPECT_FLOAT_EQ(rect.x, x);
+    EXPECT_FLOAT_EQ(rect.y, y);
+    EXPECT_FLOAT_EQ(rect.width, width);
+    EXPECT_FLOAT_EQ(rect.height, height);
+}
+
+} // namespace
+
+TEST(UISplitterLayoutTest, ArrangeHorizontalSplitterClampsPrimaryExtentToMinimum) {
+    UISplitterConstraints constraints = {};
+    constraints.primaryMin = 200.0f;
+    constraints.secondaryMin = 120.0f;
+
+    const auto result = ArrangeUISplitter(
+        UIRect(0.0f, 0.0f, 600.0f, 300.0f),
+        UILayoutAxis::Horizontal,
+        0.1f,
+        constraints,
+        UISplitterMetrics{ 10.0f, 18.0f });
+
+    ExpectRect(result.primaryRect, 0.0f, 0.0f, 200.0f, 300.0f);
+    ExpectRect(result.handleRect, 200.0f, 0.0f, 10.0f, 300.0f);
+    ExpectRect(result.secondaryRect, 210.0f, 0.0f, 390.0f, 300.0f);
+    EXPECT_NEAR(result.splitRatio, 200.0f / 590.0f, 0.0001f);
+}
+
+TEST(UISplitterLayoutTest, ArrangeVerticalSplitterClampsSecondaryMinimumAgainstRequestedRatio) {
+    UISplitterConstraints constraints = {};
+    constraints.primaryMin = 100.0f;
+    constraints.secondaryMin = 120.0f;
+
+    const auto result = ArrangeUISplitter(
+        UIRect(0.0f, 0.0f, 500.0f, 400.0f),
+        UILayoutAxis::Vertical,
+        0.9f,
+        constraints,
+        UISplitterMetrics{ 8.0f, 16.0f });
+
+    ExpectRect(result.primaryRect, 0.0f, 0.0f, 500.0f, 272.0f);
+    ExpectRect(result.handleRect, 0.0f, 272.0f, 500.0f, 8.0f);
+    ExpectRect(result.secondaryRect, 0.0f, 280.0f, 500.0f, 120.0f);
+    EXPECT_NEAR(result.splitRatio, 272.0f / 392.0f, 0.0001f);
+}
+
+TEST(UISplitterLayoutTest, HorizontalArrangementSplitsAvailableExtentAroundHandle) {
+    const auto result = ArrangeUISplitter(
+        UIRect(10.0f, 20.0f, 400.0f, 120.0f),
+        UILayoutAxis::Horizontal,
+        0.5f,
+        {},
+        UISplitterMetrics{ 8.0f, 14.0f });
+
+    EXPECT_FLOAT_EQ(result.primaryExtent, 196.0f);
+    EXPECT_FLOAT_EQ(result.secondaryExtent, 196.0f);
+    ExpectRect(result.primaryRect, 10.0f, 20.0f, 196.0f, 120.0f);
+    ExpectRect(result.handleRect, 206.0f, 20.0f, 8.0f, 120.0f);
+    ExpectRect(result.secondaryRect, 214.0f, 20.0f, 196.0f, 120.0f);
+}
--- a/tests/UI/Editor/CMakeLists.txt
+++ b/tests/UI/Editor/CMakeLists.txt
@@ -0,0 +1,18 @@
+cmake_minimum_required(VERSION 3.15)
+
+project(XCEngine_EditorUITests)
+
+add_subdirectory(integration/shared)
+add_subdirectory(unit)
+add_subdirectory(integration)
+
+add_custom_target(editor_ui_unit_tests
+    DEPENDS
+        editor_ui_tests
+)
+
+add_custom_target(editor_ui_all_tests
+    DEPENDS
+        editor_ui_unit_tests
+        editor_ui_integration_tests
+)
--- a/tests/UI/Editor/integration/CMakeLists.txt
+++ b/tests/UI/Editor/integration/CMakeLists.txt
@@ -0,0 +1,8 @@
+add_subdirectory(input)
+add_subdirectory(layout)
+
+add_custom_target(editor_ui_integration_tests
+    DEPENDS
+        editor_ui_input_integration_tests
+        editor_ui_layout_integration_tests
+)
--- a/tests/UI/Editor/integration/README.md
+++ b/tests/UI/Editor/integration/README.md
@@ -0,0 +1,22 @@
+# Editor UI Integration Validation
+
+This directory contains the manual XCUI validation system for editor-facing scenarios.
+
+Structure:
+
+- `shared/`: shared host, native renderer, screenshot helper, scenario registry
+- `input/`: input-related validation category
+- `layout/`: layout and shell-foundation validation category
+
+Rules:
+
+- One scenario directory maps to one executable.
+- Do not accumulate unrelated checks into one monolithic app.
+- Shared infrastructure belongs in `shared/`, not duplicated per scenario.
+- Screenshots are stored per scenario inside that scenario's `captures/` folder.
+
+Build:
+
+```bash
+cmake --build build --config Debug --target editor_ui_integration_tests
+```
--- a/tests/UI/Editor/integration/input/CMakeLists.txt
+++ b/tests/UI/Editor/integration/input/CMakeLists.txt
@@ -0,0 +1,10 @@
+add_subdirectory(keyboard_focus)
+add_subdirectory(pointer_states)
+add_subdirectory(shortcut_scope)
+
+add_custom_target(editor_ui_input_integration_tests
+    DEPENDS
+        editor_ui_input_keyboard_focus_validation
+        editor_ui_input_pointer_states_validation
+        editor_ui_input_shortcut_scope_validation
+)
--- a/tests/UI/Editor/integration/input/README.md
+++ b/tests/UI/Editor/integration/input/README.md
@@ -0,0 +1,9 @@
+# Editor Input Integration
+
+这个分类只放 editor 输入相关的手工验证场景。
+
+规则：
+
+- 一个场景目录对应一个独立 exe
+- 共享宿主层只放在 `integration/shared/`
+- 不允许把多个无关检查点塞进同一个 exe
--- a/tests/UI/Editor/integration/input/keyboard_focus/CMakeLists.txt
+++ b/tests/UI/Editor/integration/input/keyboard_focus/CMakeLists.txt
@@ -0,0 +1,35 @@
+set(EDITOR_UI_INPUT_KEYBOARD_FOCUS_RESOURCES
+    View.xcui
+    ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/themes/editor_validation.xctheme
+)
+
+add_executable(editor_ui_input_keyboard_focus_validation WIN32
+    main.cpp
+    ${EDITOR_UI_INPUT_KEYBOARD_FOCUS_RESOURCES}
+)
+
+target_include_directories(editor_ui_input_keyboard_focus_validation PRIVATE
+    ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/src
+    ${CMAKE_SOURCE_DIR}/engine/include
+)
+
+target_compile_definitions(editor_ui_input_keyboard_focus_validation PRIVATE
+    UNICODE
+    _UNICODE
+)
+
+if(MSVC)
+    target_compile_options(editor_ui_input_keyboard_focus_validation PRIVATE /utf-8 /FS)
+    set_property(TARGET editor_ui_input_keyboard_focus_validation PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+endif()
+
+target_link_libraries(editor_ui_input_keyboard_focus_validation PRIVATE
+    editor_ui_integration_host
+)
+
+set_target_properties(editor_ui_input_keyboard_focus_validation PROPERTIES
+    OUTPUT_NAME "XCUIEditorInputKeyboardFocusValidation"
+)
+
+source_group(TREE "${CMAKE_CURRENT_SOURCE_DIR}" FILES View.xcui)
--- a/tests/UI/Editor/integration/input/keyboard_focus/README.md
+++ b/tests/UI/Editor/integration/input/keyboard_focus/README.md
@@ -0,0 +1,18 @@
+# Keyboard Focus Validation
+
+可执行 target：
+
+- `editor_ui_input_keyboard_focus_validation`
+
+运行：
+
+```bash
+build\tests\UI\Editor\integration\input\keyboard_focus\Debug\XCUIEditorInputKeyboardFocusValidation.exe
+```
+
+检查点：
+
+1. 按 `Tab`，焦点依次切换三个按钮
+2. 按 `Shift+Tab`，焦点反向切换
+3. 按 `Enter` 或 `Space`，当前 `focus` 按钮进入 `active`
+4. 松开按键后，`active` 清空
--- a/tests/UI/Editor/integration/input/keyboard_focus/View.xcui
+++ b/tests/UI/Editor/integration/input/keyboard_focus/View.xcui
@@ -0,0 +1,30 @@
+<View
+  name="EditorInputKeyboardFocus"
+  theme="../../shared/themes/editor_validation.xctheme">
+  <Column padding="24" gap="16">
+    <Card
+      title="Editor Validation | Keyboard Focus"
+      subtitle="当前批次：Tab 焦点遍历 | Enter / Space 激活"
+      tone="accent"
+      height="90">
+      <Column gap="8">
+        <Text text="这是 editor 侧验证场景，不承载 runtime 游戏 UI。" />
+        <Text text="这一轮只检查键盘焦点和激活，不混入复杂 editor 面板。" />
+      </Column>
+    </Card>
+
+    <Card title="Keyboard Focus" subtitle="tab focus active" height="214">
+      <Column gap="12">
+        <Text text="只检查下面三个可聚焦按钮和右下角状态叠层。" />
+        <Row gap="12">
+          <Button id="focus-first" text="First Focus" />
+          <Button id="focus-second" text="Second Focus" />
+          <Button id="focus-third" text="Third Focus" />
+        </Row>
+        <Text text="1. 按 Tab：focus 应依次切到 First / Second / Third。" />
+        <Text text="2. 按 Shift+Tab：focus 应反向切换。" />
+        <Text text="3. focus 停在任一按钮后，按 Enter 或 Space：active 应出现；松开后 active 清空。" />
+      </Column>
+    </Card>
+  </Column>
+</View>
--- a/tests/UI/Editor/integration/input/keyboard_focus/main.cpp
+++ b/tests/UI/Editor/integration/input/keyboard_focus/main.cpp
@@ -0,0 +1,8 @@
+#include "Application.h"
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR, int nCmdShow) {
+    return XCEngine::Tests::EditorUI::RunEditorUIValidationApp(
+        hInstance,
+        nCmdShow,
+        "editor.input.keyboard_focus");
+}
--- a/tests/UI/Editor/integration/input/pointer_states/CMakeLists.txt
+++ b/tests/UI/Editor/integration/input/pointer_states/CMakeLists.txt
@@ -0,0 +1,35 @@
+set(EDITOR_UI_INPUT_POINTER_STATES_RESOURCES
+    View.xcui
+    ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/themes/editor_validation.xctheme
+)
+
+add_executable(editor_ui_input_pointer_states_validation WIN32
+    main.cpp
+    ${EDITOR_UI_INPUT_POINTER_STATES_RESOURCES}
+)
+
+target_include_directories(editor_ui_input_pointer_states_validation PRIVATE
+    ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/src
+    ${CMAKE_SOURCE_DIR}/engine/include
+)
+
+target_compile_definitions(editor_ui_input_pointer_states_validation PRIVATE
+    UNICODE
+    _UNICODE
+)
+
+if(MSVC)
+    target_compile_options(editor_ui_input_pointer_states_validation PRIVATE /utf-8 /FS)
+    set_property(TARGET editor_ui_input_pointer_states_validation PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+endif()
+
+target_link_libraries(editor_ui_input_pointer_states_validation PRIVATE
+    editor_ui_integration_host
+)
+
+set_target_properties(editor_ui_input_pointer_states_validation PROPERTIES
+    OUTPUT_NAME "XCUIEditorInputPointerStatesValidation"
+)
+
+source_group(TREE "${CMAKE_CURRENT_SOURCE_DIR}" FILES View.xcui)
--- a/tests/UI/Editor/integration/input/pointer_states/README.md
+++ b/tests/UI/Editor/integration/input/pointer_states/README.md
@@ -0,0 +1,17 @@
+# Pointer States Validation
+
+可执行 target：
+
+- `editor_ui_input_pointer_states_validation`
+
+运行：
+
+```bash
+build\tests\UI\Editor\integration\input\pointer_states\Debug\XCUIEditorInputPointerStatesValidation.exe
+```
+
+检查点：
+
+1. hover 左侧按钮，只应变化 `hover`
+2. 按住中间按钮，应看到 `focus`、`active`、`capture`
+3. 拖到右侧再松开，应看到 `capture` 清空，route 转到新的目标
--- a/tests/UI/Editor/integration/input/pointer_states/View.xcui
+++ b/tests/UI/Editor/integration/input/pointer_states/View.xcui
@@ -0,0 +1,30 @@
+<View
+  name="EditorInputPointerStates"
+  theme="../../shared/themes/editor_validation.xctheme">
+  <Column padding="24" gap="16">
+    <Card
+      title="Editor Validation | Pointer States"
+      subtitle="当前批次：鼠标 hover / focus / active / capture"
+      tone="accent"
+      height="90">
+      <Column gap="8">
+        <Text text="这是 editor 侧验证场景，不承载 runtime 游戏 UI。" />
+        <Text text="这一轮只检查鼠标输入状态，不混入别的控件实验。" />
+      </Column>
+    </Card>
+
+    <Card title="Pointer Input" subtitle="hover focus active capture" height="196">
+      <Column gap="12">
+        <Text text="这一轮只需要检查下面这三个按钮。" />
+        <Row gap="12">
+          <Button id="input-hover" text="Hover / Focus" />
+          <Button id="input-capture" text="Pointer Capture" capturePointer="true" />
+          <Button id="input-route" text="Route Target" />
+        </Row>
+        <Text text="1. 鼠标移到左侧按钮：hover 应变化，focus 保持空。" />
+        <Text text="2. 按住中间按钮：focus、active、capture 都应留在中间。" />
+        <Text text="3. 拖到右侧再松开：hover 移到右侧，capture 清空，focus 仍留中间。" />
+      </Column>
+    </Card>
+  </Column>
+</View>
--- a/tests/UI/Editor/integration/input/pointer_states/main.cpp
+++ b/tests/UI/Editor/integration/input/pointer_states/main.cpp
@@ -0,0 +1,8 @@
+#include "Application.h"
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR, int nCmdShow) {
+    return XCEngine::Tests::EditorUI::RunEditorUIValidationApp(
+        hInstance,
+        nCmdShow,
+        "editor.input.pointer_states");
+}
--- a/tests/UI/Editor/integration/input/shortcut_scope/CMakeLists.txt
+++ b/tests/UI/Editor/integration/input/shortcut_scope/CMakeLists.txt
@@ -0,0 +1,35 @@
+set(EDITOR_UI_INPUT_SHORTCUT_SCOPE_RESOURCES
+    View.xcui
+    ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/themes/editor_validation.xctheme
+)
+
+add_executable(editor_ui_input_shortcut_scope_validation WIN32
+    main.cpp
+    ${EDITOR_UI_INPUT_SHORTCUT_SCOPE_RESOURCES}
+)
+
+target_include_directories(editor_ui_input_shortcut_scope_validation PRIVATE
+    ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/src
+    ${CMAKE_SOURCE_DIR}/engine/include
+)
+
+target_compile_definitions(editor_ui_input_shortcut_scope_validation PRIVATE
+    UNICODE
+    _UNICODE
+)
+
+if(MSVC)
+    target_compile_options(editor_ui_input_shortcut_scope_validation PRIVATE /utf-8 /FS)
+    set_property(TARGET editor_ui_input_shortcut_scope_validation PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+endif()
+
+target_link_libraries(editor_ui_input_shortcut_scope_validation PRIVATE
+    editor_ui_integration_host
+)
+
+set_target_properties(editor_ui_input_shortcut_scope_validation PROPERTIES
+    OUTPUT_NAME "XCUIEditorInputShortcutScopeValidation"
+)
+
+source_group(TREE "${CMAKE_CURRENT_SOURCE_DIR}" FILES View.xcui)
--- a/tests/UI/Editor/integration/input/shortcut_scope/View.xcui
+++ b/tests/UI/Editor/integration/input/shortcut_scope/View.xcui
@@ -0,0 +1,69 @@
+<View
+  name="EditorInputShortcutScope"
+  theme="../../shared/themes/editor_validation.xctheme"
+  shortcut="Ctrl+P"
+  shortcutCommand="global.command"
+  shortcutScope="global">
+  <Column padding="20" gap="12">
+    <Card
+      title="Editor Validation | Shortcut Scope"
+      subtitle="验证功能：Editor shortcut scope 路由与 text input suppression"
+      tone="accent"
+      height="100">
+      <Column gap="6">
+        <Text text="功能 1：验证 Ctrl+P 在 Widget / Panel / Window / Global 间按优先级命中 shortcut。" />
+        <Text text="功能 2：验证 Text Input Proxy 会抑制 Ctrl+P 和 Tab 焦点遍历。" />
+      </Column>
+    </Card>
+
+    <Button id="global-focus" text="Global Focus" />
+
+    <Card
+      id="window-shell"
+      title="Window Scope"
+      subtitle="Ctrl+P -> window.command"
+      shortcutScopeRoot="window"
+      shortcut="Ctrl+P"
+      shortcutCommand="window.command"
+      shortcutScope="window">
+      <Column gap="10">
+        <Text text="先检查优先级：widget > panel > window > global。" />
+        <Button id="window-focus" text="Window Focus" />
+
+        <Card
+          id="panel-shell"
+          title="Panel Scope"
+          subtitle="Ctrl+P -> panel.command"
+          shortcutScopeRoot="panel"
+          shortcut="Ctrl+P"
+          shortcutCommand="panel.command"
+          shortcutScope="panel">
+          <Column gap="10">
+            <Button id="panel-focus" text="Panel Focus" />
+
+            <Card
+              id="widget-shell"
+              title="Widget Scope"
+              subtitle="Ctrl+P -> widget.command"
+              tone="accent-alt"
+              shortcutScopeRoot="widget"
+              shortcut="Ctrl+P"
+              shortcutCommand="widget.command"
+              shortcutScope="widget">
+              <Column gap="10">
+                <Button id="widget-focus" text="Widget Focus" />
+              </Column>
+            </Card>
+
+            <Button id="text-input" text="Text Input Proxy" textInput="true" />
+            <Text text="操作指引：" />
+            <Text text="1. 依次点 Widget / Panel / Window / Global Focus，再按 Ctrl+P。" />
+            <Text text="2. 右下角 Recent shortcut 应分别显示 widget / panel / window / global，且状态为 handled。" />
+            <Text text="3. 点 Text Input Proxy 再按 Ctrl+P，Recent shortcut 状态应变为 suppressed。" />
+            <Text text="4. 保持 Text Input Proxy focus 再按 Tab，Result 应显示 focus traversal suppressed，focus 不应跳走。" />
+          </Column>
+        </Card>
+      </Column>
+    </Card>
+  </Column>
+</View>
--- a/tests/UI/Editor/integration/input/shortcut_scope/main.cpp
+++ b/tests/UI/Editor/integration/input/shortcut_scope/main.cpp
@@ -0,0 +1,8 @@
+#include "Application.h"
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR, int nCmdShow) {
+    return XCEngine::Tests::EditorUI::RunEditorUIValidationApp(
+        hInstance,
+        nCmdShow,
+        "editor.input.shortcut_scope");
+}
--- a/tests/UI/Editor/integration/layout/CMakeLists.txt
+++ b/tests/UI/Editor/integration/layout/CMakeLists.txt
@@ -0,0 +1,6 @@
+add_subdirectory(splitter_resize)
+
+add_custom_target(editor_ui_layout_integration_tests
+    DEPENDS
+        editor_ui_layout_splitter_resize_validation
+)
--- a/tests/UI/Editor/integration/layout/splitter_resize/CMakeLists.txt
+++ b/tests/UI/Editor/integration/layout/splitter_resize/CMakeLists.txt
@@ -0,0 +1,35 @@
+set(EDITOR_UI_LAYOUT_SPLITTER_RESIZE_RESOURCES
+    View.xcui
+    ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/themes/editor_validation.xctheme
+)
+
+add_executable(editor_ui_layout_splitter_resize_validation WIN32
+    main.cpp
+    ${EDITOR_UI_LAYOUT_SPLITTER_RESIZE_RESOURCES}
+)
+
+target_include_directories(editor_ui_layout_splitter_resize_validation PRIVATE
+    ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/src
+    ${CMAKE_SOURCE_DIR}/engine/include
+)
+
+target_compile_definitions(editor_ui_layout_splitter_resize_validation PRIVATE
+    UNICODE
+    _UNICODE
+)
+
+if(MSVC)
+    target_compile_options(editor_ui_layout_splitter_resize_validation PRIVATE /utf-8 /FS)
+    set_property(TARGET editor_ui_layout_splitter_resize_validation PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+endif()
+
+target_link_libraries(editor_ui_layout_splitter_resize_validation PRIVATE
+    editor_ui_integration_host
+)
+
+set_target_properties(editor_ui_layout_splitter_resize_validation PROPERTIES
+    OUTPUT_NAME "XCUIEditorLayoutSplitterResizeValidation"
+)
+
+source_group(TREE "${CMAKE_CURRENT_SOURCE_DIR}" FILES View.xcui)
--- a/tests/UI/Editor/integration/layout/splitter_resize/View.xcui
+++ b/tests/UI/Editor/integration/layout/splitter_resize/View.xcui
@@ -0,0 +1,39 @@
+<View
+  name="EditorSplitterResizeValidation"
+  theme="../../shared/themes/editor_validation.xctheme">
+  <Column width="fill" height="fill" padding="20" gap="12">
+    <Card
+      title="功能：Splitter / pane resize"
+      subtitle="这一轮只检查分割条拖拽和最小尺寸 clamp"
+      tone="accent"
+      height="128">
+      <Column gap="6">
+        <Text text="1. 鼠标移到中间 divider：右下角 Hover 应落到 workspace-splitter。" />
+        <Text text="2. 按住左键拖拽：左右 pane 宽度应实时变化，Result 应出现 Splitter drag started / Splitter resized。" />
+        <Text text="3. 向左右极限拖拽：布局应被 primaryMin / secondaryMin clamp 住，不应穿透。" />
+        <Text text="4. 松开左键：Result 应显示 Splitter drag finished。" />
+      </Column>
+    </Card>
+
+    <Splitter
+      id="workspace-splitter"
+      axis="horizontal"
+      splitRatio="0.38"
+      splitterSize="10"
+      splitterHitSize="18"
+      primaryMin="180"
+      secondaryMin="220"
+      height="fill">
+      <Card id="left-pane" title="Left Empty Pane" subtitle="min 180" height="fill">
+        <Column gap="8">
+          <Text text="这里只保留空 pane，用来观察 resize。" />
+        </Column>
+      </Card>
+      <Card id="right-pane" title="Right Empty Pane" subtitle="min 220" height="fill">
+        <Column gap="8">
+          <Text text="拖拽过程中不应出现翻转、穿透或抖动。" />
+        </Column>
+      </Card>
+    </Splitter>
+  </Column>
+</View>
--- a/tests/UI/Editor/integration/layout/splitter_resize/main.cpp
+++ b/tests/UI/Editor/integration/layout/splitter_resize/main.cpp
@@ -0,0 +1,8 @@
+#include "Application.h"
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR, int nCmdShow) {
+    return XCEngine::Tests::EditorUI::RunEditorUIValidationApp(
+        hInstance,
+        nCmdShow,
+        "editor.layout.splitter_resize");
+}
--- a/tests/UI/Editor/integration/shared/CMakeLists.txt
+++ b/tests/UI/Editor/integration/shared/CMakeLists.txt
@@ -0,0 +1,57 @@
+file(TO_CMAKE_PATH "${CMAKE_SOURCE_DIR}" XCENGINE_EDITOR_UI_TESTS_REPO_ROOT_PATH)
+
+add_library(editor_ui_validation_registry STATIC
+    src/EditorValidationScenario.cpp
+)
+
+target_include_directories(editor_ui_validation_registry
+    PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/src
+        ${CMAKE_SOURCE_DIR}/engine/include
+)
+
+target_compile_definitions(editor_ui_validation_registry
+    PUBLIC
+        XCENGINE_EDITOR_UI_TESTS_REPO_ROOT="${XCENGINE_EDITOR_UI_TESTS_REPO_ROOT_PATH}"
+)
+
+if(MSVC)
+    target_compile_options(editor_ui_validation_registry PRIVATE /utf-8 /FS)
+    set_property(TARGET editor_ui_validation_registry PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+endif()
+
+target_link_libraries(editor_ui_validation_registry
+    PUBLIC
+        XCEngine
+)
+
+add_library(editor_ui_integration_host STATIC
+    src/Application.cpp
+)
+
+target_include_directories(editor_ui_integration_host
+    PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/src
+        ${CMAKE_SOURCE_DIR}/new_editor/include
+        ${CMAKE_SOURCE_DIR}/engine/include
+)
+
+target_compile_definitions(editor_ui_integration_host
+    PUBLIC
+        UNICODE
+        _UNICODE
+        XCENGINE_EDITOR_UI_TESTS_REPO_ROOT="${XCENGINE_EDITOR_UI_TESTS_REPO_ROOT_PATH}"
+)
+
+if(MSVC)
+    target_compile_options(editor_ui_integration_host PRIVATE /utf-8 /FS)
+    set_property(TARGET editor_ui_integration_host PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+endif()
+
+target_link_libraries(editor_ui_integration_host
+    PUBLIC
+        editor_ui_validation_registry
+        XCNewEditorHost
+)
--- a/tests/UI/Editor/integration/shared/src/Application.cpp
+++ b/tests/UI/Editor/integration/shared/src/Application.cpp
@@ -0,0 +1,782 @@
+#include "Application.h"
+
+#include <XCEngine/Input/InputTypes.h>
+
+#include <algorithm>
+#include <chrono>
+#include <filesystem>
+#include <sstream>
+#include <string>
+#include <system_error>
+#include <unordered_set>
+#include <vector>
+
+#ifndef XCENGINE_EDITOR_UI_TESTS_REPO_ROOT
+#define XCENGINE_EDITOR_UI_TESTS_REPO_ROOT "."
+#endif
+
+namespace XCEngine::Tests::EditorUI {
+
+namespace {
+
+using ::XCEngine::UI::UIColor;
+using ::XCEngine::UI::UIDrawData;
+using ::XCEngine::UI::UIDrawList;
+using ::XCEngine::UI::UIInputEvent;
+using ::XCEngine::UI::UIInputEventType;
+using ::XCEngine::UI::UIPoint;
+using ::XCEngine::UI::UIPointerButton;
+using ::XCEngine::UI::UIRect;
+using ::XCEngine::UI::Runtime::UIScreenFrameInput;
+using ::XCEngine::Input::KeyCode;
+
+constexpr const wchar_t* kWindowClassName = L"XCUIEditorValidationHost";
+constexpr const wchar_t* kWindowTitle = L"XCUI Editor Validation";
+constexpr auto kReloadPollInterval = std::chrono::milliseconds(150);
+
+constexpr UIColor kOverlayBgColor(0.10f, 0.10f, 0.10f, 0.95f);
+constexpr UIColor kOverlayBorderColor(0.25f, 0.25f, 0.25f, 1.0f);
+constexpr UIColor kOverlayTextPrimary(0.93f, 0.93f, 0.93f, 1.0f);
+constexpr UIColor kOverlayTextMuted(0.70f, 0.70f, 0.70f, 1.0f);
+constexpr UIColor kOverlaySuccess(0.82f, 0.82f, 0.82f, 1.0f);
+constexpr UIColor kOverlayFallback(0.56f, 0.56f, 0.56f, 1.0f);
+
+Application* GetApplicationFromWindow(HWND hwnd) {
+    return reinterpret_cast<Application*>(GetWindowLongPtrW(hwnd, GWLP_USERDATA));
+}
+
+std::filesystem::path GetRepoRootPath() {
+    std::string root = XCENGINE_EDITOR_UI_TESTS_REPO_ROOT;
+    if (root.size() >= 2u && root.front() == '"' && root.back() == '"') {
+        root = root.substr(1u, root.size() - 2u);
+    }
+    return std::filesystem::path(root).lexically_normal();
+}
+
+std::string TruncateText(const std::string& text, std::size_t maxLength) {
+    if (text.size() <= maxLength) {
+        return text;
+    }
+
+    if (maxLength <= 3u) {
+        return text.substr(0, maxLength);
+    }
+
+    return text.substr(0, maxLength - 3u) + "...";
+}
+
+std::string ExtractStateKeyTail(const std::string& stateKey) {
+    if (stateKey.empty()) {
+        return "-";
+    }
+
+    const std::size_t separator = stateKey.find_last_of('/');
+    if (separator == std::string::npos || separator + 1u >= stateKey.size()) {
+        return stateKey;
+    }
+
+    return stateKey.substr(separator + 1u);
+}
+
+std::string FormatFloat(float value) {
+    std::ostringstream stream;
+    stream.setf(std::ios::fixed, std::ios::floatfield);
+    stream.precision(1);
+    stream << value;
+    return stream.str();
+}
+
+std::string FormatPoint(const UIPoint& point) {
+    return "(" + FormatFloat(point.x) + ", " + FormatFloat(point.y) + ")";
+}
+
+std::string FormatRect(const UIRect& rect) {
+    return "(" + FormatFloat(rect.x) +
+        ", " + FormatFloat(rect.y) +
+        ", " + FormatFloat(rect.width) +
+        ", " + FormatFloat(rect.height) +
+        ")";
+}
+
+std::int32_t MapVirtualKeyToUIKeyCode(WPARAM wParam) {
+    switch (wParam) {
+    case 'A': return static_cast<std::int32_t>(KeyCode::A);
+    case 'B': return static_cast<std::int32_t>(KeyCode::B);
+    case 'C': return static_cast<std::int32_t>(KeyCode::C);
+    case 'D': return static_cast<std::int32_t>(KeyCode::D);
+    case 'E': return static_cast<std::int32_t>(KeyCode::E);
+    case 'F': return static_cast<std::int32_t>(KeyCode::F);
+    case 'G': return static_cast<std::int32_t>(KeyCode::G);
+    case 'H': return static_cast<std::int32_t>(KeyCode::H);
+    case 'I': return static_cast<std::int32_t>(KeyCode::I);
+    case 'J': return static_cast<std::int32_t>(KeyCode::J);
+    case 'K': return static_cast<std::int32_t>(KeyCode::K);
+    case 'L': return static_cast<std::int32_t>(KeyCode::L);
+    case 'M': return static_cast<std::int32_t>(KeyCode::M);
+    case 'N': return static_cast<std::int32_t>(KeyCode::N);
+    case 'O': return static_cast<std::int32_t>(KeyCode::O);
+    case 'P': return static_cast<std::int32_t>(KeyCode::P);
+    case 'Q': return static_cast<std::int32_t>(KeyCode::Q);
+    case 'R': return static_cast<std::int32_t>(KeyCode::R);
+    case 'S': return static_cast<std::int32_t>(KeyCode::S);
+    case 'T': return static_cast<std::int32_t>(KeyCode::T);
+    case 'U': return static_cast<std::int32_t>(KeyCode::U);
+    case 'V': return static_cast<std::int32_t>(KeyCode::V);
+    case 'W': return static_cast<std::int32_t>(KeyCode::W);
+    case 'X': return static_cast<std::int32_t>(KeyCode::X);
+    case 'Y': return static_cast<std::int32_t>(KeyCode::Y);
+    case 'Z': return static_cast<std::int32_t>(KeyCode::Z);
+    case '0': return static_cast<std::int32_t>(KeyCode::Zero);
+    case '1': return static_cast<std::int32_t>(KeyCode::One);
+    case '2': return static_cast<std::int32_t>(KeyCode::Two);
+    case '3': return static_cast<std::int32_t>(KeyCode::Three);
+    case '4': return static_cast<std::int32_t>(KeyCode::Four);
+    case '5': return static_cast<std::int32_t>(KeyCode::Five);
+    case '6': return static_cast<std::int32_t>(KeyCode::Six);
+    case '7': return static_cast<std::int32_t>(KeyCode::Seven);
+    case '8': return static_cast<std::int32_t>(KeyCode::Eight);
+    case '9': return static_cast<std::int32_t>(KeyCode::Nine);
+    case VK_SPACE: return static_cast<std::int32_t>(KeyCode::Space);
+    case VK_TAB: return static_cast<std::int32_t>(KeyCode::Tab);
+    case VK_RETURN: return static_cast<std::int32_t>(KeyCode::Enter);
+    case VK_ESCAPE: return static_cast<std::int32_t>(KeyCode::Escape);
+    case VK_SHIFT: return static_cast<std::int32_t>(KeyCode::LeftShift);
+    case VK_CONTROL: return static_cast<std::int32_t>(KeyCode::LeftCtrl);
+    case VK_MENU: return static_cast<std::int32_t>(KeyCode::LeftAlt);
+    case VK_UP: return static_cast<std::int32_t>(KeyCode::Up);
+    case VK_DOWN: return static_cast<std::int32_t>(KeyCode::Down);
+    case VK_LEFT: return static_cast<std::int32_t>(KeyCode::Left);
+    case VK_RIGHT: return static_cast<std::int32_t>(KeyCode::Right);
+    case VK_HOME: return static_cast<std::int32_t>(KeyCode::Home);
+    case VK_END: return static_cast<std::int32_t>(KeyCode::End);
+    case VK_PRIOR: return static_cast<std::int32_t>(KeyCode::PageUp);
+    case VK_NEXT: return static_cast<std::int32_t>(KeyCode::PageDown);
+    case VK_DELETE: return static_cast<std::int32_t>(KeyCode::Delete);
+    case VK_BACK: return static_cast<std::int32_t>(KeyCode::Backspace);
+    case VK_F1: return static_cast<std::int32_t>(KeyCode::F1);
+    case VK_F2: return static_cast<std::int32_t>(KeyCode::F2);
+    case VK_F3: return static_cast<std::int32_t>(KeyCode::F3);
+    case VK_F4: return static_cast<std::int32_t>(KeyCode::F4);
+    case VK_F5: return static_cast<std::int32_t>(KeyCode::F5);
+    case VK_F6: return static_cast<std::int32_t>(KeyCode::F6);
+    case VK_F7: return static_cast<std::int32_t>(KeyCode::F7);
+    case VK_F8: return static_cast<std::int32_t>(KeyCode::F8);
+    case VK_F9: return static_cast<std::int32_t>(KeyCode::F9);
+    case VK_F10: return static_cast<std::int32_t>(KeyCode::F10);
+    case VK_F11: return static_cast<std::int32_t>(KeyCode::F11);
+    case VK_F12: return static_cast<std::int32_t>(KeyCode::F12);
+    default: return static_cast<std::int32_t>(KeyCode::None);
+    }
+}
+
+bool IsRepeatKeyMessage(LPARAM lParam) {
+    return (static_cast<unsigned long>(lParam) & (1ul << 30)) != 0ul;
+}
+
+} // namespace
+
+Application::Application(std::string requestedScenarioId)
+    : m_screenPlayer(m_documentHost)
+    , m_requestedScenarioId(std::move(requestedScenarioId)) {
+}
+
+int Application::Run(HINSTANCE hInstance, int nCmdShow) {
+    if (!Initialize(hInstance, nCmdShow)) {
+        Shutdown();
+        return 1;
+    }
+
+    MSG message = {};
+    while (message.message != WM_QUIT) {
+        if (PeekMessageW(&message, nullptr, 0U, 0U, PM_REMOVE)) {
+            TranslateMessage(&message);
+            DispatchMessageW(&message);
+            continue;
+        }
+
+        RenderFrame();
+        Sleep(8);
+    }
+
+    Shutdown();
+    return static_cast<int>(message.wParam);
+}
+
+bool Application::Initialize(HINSTANCE hInstance, int nCmdShow) {
+    m_hInstance = hInstance;
+
+    WNDCLASSEXW windowClass = {};
+    windowClass.cbSize = sizeof(windowClass);
+    windowClass.style = CS_HREDRAW | CS_VREDRAW;
+    windowClass.lpfnWndProc = &Application::WndProc;
+    windowClass.hInstance = hInstance;
+    windowClass.hCursor = LoadCursorW(nullptr, IDC_ARROW);
+    windowClass.lpszClassName = kWindowClassName;
+
+    m_windowClassAtom = RegisterClassExW(&windowClass);
+    if (m_windowClassAtom == 0) {
+        return false;
+    }
+
+    m_hwnd = CreateWindowExW(
+        0,
+        kWindowClassName,
+        kWindowTitle,
+        WS_OVERLAPPEDWINDOW | WS_VISIBLE,
+        CW_USEDEFAULT,
+        CW_USEDEFAULT,
+        1440,
+        900,
+        nullptr,
+        nullptr,
+        hInstance,
+        this);
+    if (m_hwnd == nullptr) {
+        return false;
+    }
+
+    ShowWindow(m_hwnd, nCmdShow);
+    UpdateWindow(m_hwnd);
+
+    if (!m_renderer.Initialize(m_hwnd)) {
+        return false;
+    }
+
+    m_startTime = std::chrono::steady_clock::now();
+    m_lastFrameTime = m_startTime;
+    const EditorValidationScenario* initialScenario = m_requestedScenarioId.empty()
+        ? &GetDefaultEditorValidationScenario()
+        : FindEditorValidationScenario(m_requestedScenarioId);
+    if (initialScenario == nullptr) {
+        initialScenario = &GetDefaultEditorValidationScenario();
+    }
+    m_autoScreenshot.Initialize(initialScenario->captureRootPath);
+    LoadStructuredScreen("startup");
+    return true;
+}
+
+void Application::Shutdown() {
+    m_autoScreenshot.Shutdown();
+    m_screenPlayer.Unload();
+    m_trackedFiles.clear();
+    m_screenAsset = {};
+    m_useStructuredScreen = false;
+    m_runtimeStatus.clear();
+    m_runtimeError.clear();
+    m_frameIndex = 0;
+
+    m_renderer.Shutdown();
+
+    if (m_hwnd != nullptr && IsWindow(m_hwnd)) {
+        DestroyWindow(m_hwnd);
+    }
+    m_hwnd = nullptr;
+
+    if (m_windowClassAtom != 0 && m_hInstance != nullptr) {
+        UnregisterClassW(kWindowClassName, m_hInstance);
+        m_windowClassAtom = 0;
+    }
+}
+
+void Application::RenderFrame() {
+    if (m_hwnd == nullptr) {
+        return;
+    }
+
+    RECT clientRect = {};
+    GetClientRect(m_hwnd, &clientRect);
+    const float width = static_cast<float>((std::max)(clientRect.right - clientRect.left, 1L));
+    const float height = static_cast<float>((std::max)(clientRect.bottom - clientRect.top, 1L));
+
+    const auto now = std::chrono::steady_clock::now();
+    double deltaTimeSeconds = std::chrono::duration<double>(now - m_lastFrameTime).count();
+    if (deltaTimeSeconds <= 0.0) {
+        deltaTimeSeconds = 1.0 / 60.0;
+    }
+    m_lastFrameTime = now;
+
+    RefreshStructuredScreen();
+    std::vector<UIInputEvent> frameEvents = std::move(m_pendingInputEvents);
+    m_pendingInputEvents.clear();
+
+    UIDrawData drawData = {};
+    if (m_useStructuredScreen && m_screenPlayer.IsLoaded()) {
+        UIScreenFrameInput input = {};
+        input.viewportRect = UIRect(0.0f, 0.0f, width, height);
+        input.events = std::move(frameEvents);
+        input.deltaTimeSeconds = deltaTimeSeconds;
+        input.frameIndex = ++m_frameIndex;
+        input.focused = GetForegroundWindow() == m_hwnd;
+
+        const auto& frame = m_screenPlayer.Update(input);
+        for (const auto& drawList : frame.drawData.GetDrawLists()) {
+            drawData.AddDrawList(drawList);
+        }
+
+        m_runtimeStatus = m_activeScenario != nullptr
+            ? m_activeScenario->displayName
+            : "Editor UI Validation";
+        m_runtimeError = frame.errorMessage;
+    }
+
+    if (drawData.Empty()) {
+        m_runtimeStatus = "Editor UI Validation | Load Error";
+        if (m_runtimeError.empty() && !m_screenPlayer.IsLoaded()) {
+            m_runtimeError = m_screenPlayer.GetLastError();
+        }
+    }
+
+    AppendRuntimeOverlay(drawData, width, height);
+
+    const bool framePresented = m_renderer.Render(drawData);
+    m_autoScreenshot.CaptureIfRequested(
+        m_renderer,
+        drawData,
+        static_cast<unsigned int>(width),
+        static_cast<unsigned int>(height),
+        framePresented);
+}
+
+void Application::OnResize(UINT width, UINT height) {
+    if (width == 0 || height == 0) {
+        return;
+    }
+
+    m_renderer.Resize(width, height);
+}
+
+void Application::QueuePointerEvent(UIInputEventType type, UIPointerButton button, WPARAM wParam, LPARAM lParam) {
+    UIInputEvent event = {};
+    event.type = type;
+    event.pointerButton = button;
+    event.position = UIPoint(
+        static_cast<float>(GET_X_LPARAM(lParam)),
+        static_cast<float>(GET_Y_LPARAM(lParam)));
+    event.modifiers = m_inputModifierTracker.BuildPointerModifiers(static_cast<size_t>(wParam));
+    m_pendingInputEvents.push_back(event);
+}
+
+void Application::QueuePointerLeaveEvent() {
+    UIInputEvent event = {};
+    event.type = UIInputEventType::PointerLeave;
+    if (m_hwnd != nullptr) {
+        POINT clientPoint = {};
+        GetCursorPos(&clientPoint);
+        ScreenToClient(m_hwnd, &clientPoint);
+        event.position = UIPoint(static_cast<float>(clientPoint.x), static_cast<float>(clientPoint.y));
+    }
+    m_pendingInputEvents.push_back(event);
+}
+
+void Application::QueuePointerWheelEvent(short wheelDelta, WPARAM wParam, LPARAM lParam) {
+    if (m_hwnd == nullptr) {
+        return;
+    }
+
+    POINT screenPoint = {
+        GET_X_LPARAM(lParam),
+        GET_Y_LPARAM(lParam)
+    };
+    ScreenToClient(m_hwnd, &screenPoint);
+
+    UIInputEvent event = {};
+    event.type = UIInputEventType::PointerWheel;
+    event.position = UIPoint(static_cast<float>(screenPoint.x), static_cast<float>(screenPoint.y));
+    event.wheelDelta = static_cast<float>(wheelDelta);
+    event.modifiers = m_inputModifierTracker.BuildPointerModifiers(static_cast<size_t>(wParam));
+    m_pendingInputEvents.push_back(event);
+}
+
+void Application::QueueKeyEvent(UIInputEventType type, WPARAM wParam, LPARAM lParam) {
+    UIInputEvent event = {};
+    event.type = type;
+    event.keyCode = MapVirtualKeyToUIKeyCode(wParam);
+    event.modifiers = m_inputModifierTracker.ApplyKeyMessage(type, wParam, lParam);
+    event.repeat = IsRepeatKeyMessage(lParam);
+    m_pendingInputEvents.push_back(event);
+}
+
+void Application::QueueCharacterEvent(WPARAM wParam, LPARAM) {
+    UIInputEvent event = {};
+    event.type = UIInputEventType::Character;
+    event.character = static_cast<std::uint32_t>(wParam);
+    event.modifiers = m_inputModifierTracker.GetCurrentModifiers();
+    m_pendingInputEvents.push_back(event);
+}
+
+void Application::QueueWindowFocusEvent(UIInputEventType type) {
+    UIInputEvent event = {};
+    event.type = type;
+    m_pendingInputEvents.push_back(event);
+}
+
+bool Application::LoadStructuredScreen(const char* triggerReason) {
+    (void)triggerReason;
+    std::string scenarioLoadWarning = {};
+    const EditorValidationScenario* scenario = m_requestedScenarioId.empty()
+        ? &GetDefaultEditorValidationScenario()
+        : FindEditorValidationScenario(m_requestedScenarioId);
+    if (scenario == nullptr) {
+        scenario = &GetDefaultEditorValidationScenario();
+        scenarioLoadWarning = "Unknown validation scenario: " + m_requestedScenarioId;
+    }
+
+    m_activeScenario = scenario;
+    m_screenAsset = {};
+    m_screenAsset.screenId = scenario->id;
+    m_screenAsset.documentPath = scenario->documentPath.string();
+    m_screenAsset.themePath = scenario->themePath.string();
+
+    const bool loaded = m_screenPlayer.Load(m_screenAsset);
+    m_useStructuredScreen = loaded;
+    m_runtimeStatus = loaded ? scenario->displayName : "Editor UI Validation | Load Error";
+    m_runtimeError = loaded
+        ? scenarioLoadWarning
+        : (scenarioLoadWarning.empty()
+            ? m_screenPlayer.GetLastError()
+            : scenarioLoadWarning + " | " + m_screenPlayer.GetLastError());
+    RebuildTrackedFileStates();
+    return loaded;
+}
+
+void Application::RefreshStructuredScreen() {
+    const auto now = std::chrono::steady_clock::now();
+    if (m_lastReloadPollTime.time_since_epoch().count() != 0 &&
+        now - m_lastReloadPollTime < kReloadPollInterval) {
+        return;
+    }
+
+    m_lastReloadPollTime = now;
+    if (DetectTrackedFileChange()) {
+        LoadStructuredScreen("reload");
+    }
+}
+
+void Application::RebuildTrackedFileStates() {
+    namespace fs = std::filesystem;
+
+    m_trackedFiles.clear();
+    std::unordered_set<std::string> seenPaths = {};
+    std::error_code errorCode = {};
+
+    auto appendTrackedPath = [&](const std::string& rawPath) {
+        if (rawPath.empty()) {
+            return;
+        }
+
+        const fs::path normalizedPath = fs::path(rawPath).lexically_normal();
+        const std::string key = normalizedPath.string();
+        if (!seenPaths.insert(key).second) {
+            return;
+        }
+
+        TrackedFileState state = {};
+        state.path = normalizedPath;
+        state.exists = fs::exists(normalizedPath, errorCode);
+        errorCode.clear();
+        if (state.exists) {
+            state.writeTime = fs::last_write_time(normalizedPath, errorCode);
+            errorCode.clear();
+        }
+        m_trackedFiles.push_back(std::move(state));
+    };
+
+    appendTrackedPath(m_screenAsset.documentPath);
+    appendTrackedPath(m_screenAsset.themePath);
+
+    if (const auto* document = m_screenPlayer.GetDocument(); document != nullptr) {
+        for (const std::string& dependency : document->dependencies) {
+            appendTrackedPath(dependency);
+        }
+    }
+}
+
+bool Application::DetectTrackedFileChange() const {
+    namespace fs = std::filesystem;
+
+    std::error_code errorCode = {};
+    for (const TrackedFileState& trackedFile : m_trackedFiles) {
+        const bool existsNow = fs::exists(trackedFile.path, errorCode);
+        errorCode.clear();
+        if (existsNow != trackedFile.exists) {
+            return true;
+        }
+
+        if (!existsNow) {
+            continue;
+        }
+
+        const auto writeTimeNow = fs::last_write_time(trackedFile.path, errorCode);
+        errorCode.clear();
+        if (writeTimeNow != trackedFile.writeTime) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+void Application::AppendRuntimeOverlay(UIDrawData& drawData, float width, float height) const {
+    const bool authoredMode = m_useStructuredScreen && m_screenPlayer.IsLoaded();
+    const float panelWidth = authoredMode ? 460.0f : 360.0f;
+    std::vector<std::string> detailLines = {};
+    detailLines.push_back(
+        authoredMode
+            ? "Hot reload watches authored UI resources."
+            : "Authored validation scene failed to load.");
+    if (m_activeScenario != nullptr) {
+        detailLines.push_back("Scenario: " + m_activeScenario->id);
+    }
+
+    if (authoredMode) {
+        const auto& inputDebug = m_documentHost.GetInputDebugSnapshot();
+        detailLines.push_back(
+            "Hover | Focus: " +
+            ExtractStateKeyTail(inputDebug.hoveredStateKey) +
+            " | " +
+            ExtractStateKeyTail(inputDebug.focusedStateKey));
+        detailLines.push_back(
+            "Active | Capture: " +
+            ExtractStateKeyTail(inputDebug.activeStateKey) +
+            " | " +
+            ExtractStateKeyTail(inputDebug.captureStateKey));
+        detailLines.push_back(
+            "Scope W/P/Wg: " +
+            ExtractStateKeyTail(inputDebug.windowScopeStateKey) +
+            " | " +
+            ExtractStateKeyTail(inputDebug.panelScopeStateKey) +
+            " | " +
+            ExtractStateKeyTail(inputDebug.widgetScopeStateKey));
+        detailLines.push_back(
+            std::string("Text input: ") +
+            (inputDebug.textInputActive ? "active" : "idle"));
+        if (!inputDebug.recentShortcutCommandId.empty()) {
+            detailLines.push_back(
+                "Recent shortcut: " +
+                inputDebug.recentShortcutScope +
+                " -> " +
+                inputDebug.recentShortcutCommandId);
+            detailLines.push_back(
+                std::string("Recent shortcut state: ") +
+                (inputDebug.recentShortcutHandled
+                    ? "handled"
+                    : (inputDebug.recentShortcutSuppressed ? "suppressed" : "observed")) +
+                " @ " +
+                ExtractStateKeyTail(inputDebug.recentShortcutOwnerStateKey));
+        } else {
+            detailLines.push_back("Recent shortcut: none");
+        }
+        if (!inputDebug.lastEventType.empty()) {
+            const std::string eventPosition = inputDebug.lastEventType == "KeyDown" ||
+                    inputDebug.lastEventType == "KeyUp" ||
+                    inputDebug.lastEventType == "Character" ||
+                    inputDebug.lastEventType == "FocusGained" ||
+                    inputDebug.lastEventType == "FocusLost"
+                ? std::string()
+                : " at " + FormatPoint(inputDebug.pointerPosition);
+            detailLines.push_back(
+                "Last input: " +
+                inputDebug.lastEventType +
+                eventPosition);
+            detailLines.push_back(
+                "Route: " +
+                inputDebug.lastTargetKind +
+                " -> " +
+                ExtractStateKeyTail(inputDebug.lastTargetStateKey));
+            if (!inputDebug.lastShortcutCommandId.empty()) {
+                detailLines.push_back(
+                    "Shortcut: " +
+                    inputDebug.lastShortcutScope +
+                    " -> " +
+                    inputDebug.lastShortcutCommandId);
+                detailLines.push_back(
+                    std::string("Shortcut state: ") +
+                    (inputDebug.lastShortcutHandled
+                        ? "handled"
+                        : (inputDebug.lastShortcutSuppressed ? "suppressed" : "observed")) +
+                    " @ " +
+                    ExtractStateKeyTail(inputDebug.lastShortcutOwnerStateKey));
+            }
+            detailLines.push_back(
+                "Last event result: " +
+                (inputDebug.lastResult.empty() ? std::string("n/a") : inputDebug.lastResult));
+        }
+    }
+
+    if (m_autoScreenshot.HasPendingCapture()) {
+        detailLines.push_back("Shot pending...");
+    } else if (!m_autoScreenshot.GetLastCaptureSummary().empty()) {
+        detailLines.push_back(TruncateText(m_autoScreenshot.GetLastCaptureSummary(), 78u));
+    } else {
+        detailLines.push_back("Screenshots: F12 -> current scenario captures/");
+    }
+
+    if (!m_runtimeError.empty()) {
+        detailLines.push_back(TruncateText(m_runtimeError, 78u));
+    } else if (!m_autoScreenshot.GetLastCaptureError().empty()) {
+        detailLines.push_back(TruncateText(m_autoScreenshot.GetLastCaptureError(), 78u));
+    } else if (!authoredMode) {
+        detailLines.push_back("No fallback sandbox is rendered in this host.");
+    }
+
+    const float panelHeight = 38.0f + static_cast<float>(detailLines.size()) * 18.0f;
+    const UIRect panelRect(width - panelWidth - 16.0f, height - panelHeight - 42.0f, panelWidth, panelHeight);
+
+    UIDrawList& overlay = drawData.EmplaceDrawList("Editor UI Validation Overlay");
+    overlay.AddFilledRect(panelRect, kOverlayBgColor, 10.0f);
+    overlay.AddRectOutline(panelRect, kOverlayBorderColor, 1.0f, 10.0f);
+    overlay.AddFilledRect(
+        UIRect(panelRect.x + 12.0f, panelRect.y + 14.0f, 8.0f, 8.0f),
+        authoredMode ? kOverlaySuccess : kOverlayFallback,
+        4.0f);
+    overlay.AddText(
+        UIPoint(panelRect.x + 28.0f, panelRect.y + 10.0f),
+        m_runtimeStatus.empty() ? "Editor UI Validation" : m_runtimeStatus,
+        kOverlayTextPrimary,
+        14.0f);
+
+    float detailY = panelRect.y + 30.0f;
+    for (std::size_t index = 0; index < detailLines.size(); ++index) {
+        const bool lastLine = index + 1u == detailLines.size();
+        overlay.AddText(
+            UIPoint(panelRect.x + 28.0f, detailY),
+            detailLines[index],
+            lastLine && (!m_runtimeError.empty() || !m_autoScreenshot.GetLastCaptureError().empty())
+                ? kOverlayFallback
+                : kOverlayTextMuted,
+            12.0f);
+        detailY += 18.0f;
+    }
+}
+
+std::filesystem::path Application::ResolveRepoRelativePath(const char* relativePath) {
+    return (GetRepoRootPath() / relativePath).lexically_normal();
+}
+
+LRESULT CALLBACK Application::WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
+    if (message == WM_NCCREATE) {
+        const auto* createStruct = reinterpret_cast<CREATESTRUCTW*>(lParam);
+        auto* application = reinterpret_cast<Application*>(createStruct->lpCreateParams);
+        SetWindowLongPtrW(hwnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(application));
+        return TRUE;
+    }
+
+    Application* application = GetApplicationFromWindow(hwnd);
+    switch (message) {
+    case WM_SIZE:
+        if (application != nullptr && wParam != SIZE_MINIMIZED) {
+            application->OnResize(static_cast<UINT>(LOWORD(lParam)), static_cast<UINT>(HIWORD(lParam)));
+        }
+        return 0;
+    case WM_PAINT:
+        if (application != nullptr) {
+            PAINTSTRUCT paintStruct = {};
+            BeginPaint(hwnd, &paintStruct);
+            application->RenderFrame();
+            EndPaint(hwnd, &paintStruct);
+            return 0;
+        }
+        break;
+    case WM_MOUSEMOVE:
+        if (application != nullptr) {
+            if (!application->m_trackingMouseLeave) {
+                TRACKMOUSEEVENT trackMouseEvent = {};
+                trackMouseEvent.cbSize = sizeof(trackMouseEvent);
+                trackMouseEvent.dwFlags = TME_LEAVE;
+                trackMouseEvent.hwndTrack = hwnd;
+                if (TrackMouseEvent(&trackMouseEvent)) {
+                    application->m_trackingMouseLeave = true;
+                }
+            }
+            application->QueuePointerEvent(UIInputEventType::PointerMove, UIPointerButton::None, wParam, lParam);
+            return 0;
+        }
+        break;
+    case WM_MOUSELEAVE:
+        if (application != nullptr) {
+            application->m_trackingMouseLeave = false;
+            application->QueuePointerLeaveEvent();
+            return 0;
+        }
+        break;
+    case WM_LBUTTONDOWN:
+        if (application != nullptr) {
+            SetFocus(hwnd);
+            SetCapture(hwnd);
+            application->QueuePointerEvent(UIInputEventType::PointerButtonDown, UIPointerButton::Left, wParam, lParam);
+            return 0;
+        }
+        break;
+    case WM_LBUTTONUP:
+        if (application != nullptr) {
+            if (GetCapture() == hwnd) {
+                ReleaseCapture();
+            }
+            application->QueuePointerEvent(UIInputEventType::PointerButtonUp, UIPointerButton::Left, wParam, lParam);
+            return 0;
+        }
+        break;
+    case WM_MOUSEWHEEL:
+        if (application != nullptr) {
+            application->QueuePointerWheelEvent(GET_WHEEL_DELTA_WPARAM(wParam), wParam, lParam);
+            return 0;
+        }
+        break;
+    case WM_SETFOCUS:
+        if (application != nullptr) {
+            application->m_inputModifierTracker.SyncFromSystemState();
+            application->QueueWindowFocusEvent(UIInputEventType::FocusGained);
+            return 0;
+        }
+        break;
+    case WM_KILLFOCUS:
+        if (application != nullptr) {
+            application->m_inputModifierTracker.Reset();
+            application->QueueWindowFocusEvent(UIInputEventType::FocusLost);
+            return 0;
+        }
+        break;
+    case WM_KEYDOWN:
+    case WM_SYSKEYDOWN:
+        if (application != nullptr) {
+            if (wParam == VK_F12) {
+                application->m_autoScreenshot.RequestCapture("manual_f12");
+            }
+            application->QueueKeyEvent(UIInputEventType::KeyDown, wParam, lParam);
+            return 0;
+        }
+        break;
+    case WM_KEYUP:
+    case WM_SYSKEYUP:
+        if (application != nullptr) {
+            application->QueueKeyEvent(UIInputEventType::KeyUp, wParam, lParam);
+            return 0;
+        }
+        break;
+    case WM_CHAR:
+        if (application != nullptr) {
+            application->QueueCharacterEvent(wParam, lParam);
+            return 0;
+        }
+        break;
+    case WM_ERASEBKGND:
+        return 1;
+    case WM_DESTROY:
+        if (application != nullptr) {
+            application->m_hwnd = nullptr;
+        }
+        PostQuitMessage(0);
+        return 0;
+    default:
+        break;
+    }
+
+    return DefWindowProcW(hwnd, message, wParam, lParam);
+}
+
+int RunEditorUIValidationApp(HINSTANCE hInstance, int nCmdShow, std::string requestedScenarioId) {
+    Application application(std::move(requestedScenarioId));
+    return application.Run(hInstance, nCmdShow);
+}
+
+} // namespace XCEngine::Tests::EditorUI
--- a/tests/UI/Editor/integration/shared/src/Application.h
+++ b/tests/UI/Editor/integration/shared/src/Application.h
@@ -0,0 +1,83 @@
+#pragma once
+
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+
+#include "EditorValidationScenario.h"
+#include <XCNewEditor/Host/AutoScreenshot.h>
+#include <XCNewEditor/Host/InputModifierTracker.h>
+#include <XCNewEditor/Host/NativeRenderer.h>
+
+#include <XCEngine/UI/Runtime/UIScreenDocumentHost.h>
+#include <XCEngine/UI/Runtime/UIScreenPlayer.h>
+
+#include <windows.h>
+#include <windowsx.h>
+
+#include <chrono>
+#include <cstdint>
+#include <filesystem>
+#include <string>
+#include <vector>
+
+namespace XCEngine::Tests::EditorUI {
+
+class Application {
+public:
+    explicit Application(std::string requestedScenarioId = {});
+
+    int Run(HINSTANCE hInstance, int nCmdShow);
+
+private:
+    struct TrackedFileState {
+        std::filesystem::path path = {};
+        std::filesystem::file_time_type writeTime = {};
+        bool exists = false;
+    };
+
+    static LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
+
+    bool Initialize(HINSTANCE hInstance, int nCmdShow);
+    void Shutdown();
+    void RenderFrame();
+    void OnResize(UINT width, UINT height);
+    void QueuePointerEvent(::XCEngine::UI::UIInputEventType type, ::XCEngine::UI::UIPointerButton button, WPARAM wParam, LPARAM lParam);
+    void QueuePointerLeaveEvent();
+    void QueuePointerWheelEvent(short wheelDelta, WPARAM wParam, LPARAM lParam);
+    void QueueKeyEvent(::XCEngine::UI::UIInputEventType type, WPARAM wParam, LPARAM lParam);
+    void QueueCharacterEvent(WPARAM wParam, LPARAM lParam);
+    void QueueWindowFocusEvent(::XCEngine::UI::UIInputEventType type);
+    bool LoadStructuredScreen(const char* triggerReason);
+    void RefreshStructuredScreen();
+    void RebuildTrackedFileStates();
+    bool DetectTrackedFileChange() const;
+    void AppendRuntimeOverlay(::XCEngine::UI::UIDrawData& drawData, float width, float height) const;
+    static std::filesystem::path ResolveRepoRelativePath(const char* relativePath);
+
+    HWND m_hwnd = nullptr;
+    HINSTANCE m_hInstance = nullptr;
+    ATOM m_windowClassAtom = 0;
+    ::XCEngine::XCUI::Host::NativeRenderer m_renderer;
+    ::XCEngine::XCUI::Host::AutoScreenshotController m_autoScreenshot;
+    ::XCEngine::UI::Runtime::UIDocumentScreenHost m_documentHost;
+    ::XCEngine::UI::Runtime::UIScreenPlayer m_screenPlayer;
+    ::XCEngine::UI::Runtime::UIScreenAsset m_screenAsset = {};
+    const EditorValidationScenario* m_activeScenario = nullptr;
+    std::string m_requestedScenarioId = {};
+    std::vector<TrackedFileState> m_trackedFiles = {};
+    std::chrono::steady_clock::time_point m_startTime = {};
+    std::chrono::steady_clock::time_point m_lastFrameTime = {};
+    std::chrono::steady_clock::time_point m_lastReloadPollTime = {};
+    std::uint64_t m_frameIndex = 0;
+    std::vector<::XCEngine::UI::UIInputEvent> m_pendingInputEvents = {};
+    ::XCEngine::XCUI::Host::InputModifierTracker m_inputModifierTracker = {};
+    bool m_trackingMouseLeave = false;
+    bool m_useStructuredScreen = false;
+    std::string m_runtimeStatus = {};
+    std::string m_runtimeError = {};
+};
+
+int RunEditorUIValidationApp(HINSTANCE hInstance, int nCmdShow, std::string requestedScenarioId = {});
+
+} // namespace XCEngine::Tests::EditorUI
--- a/tests/UI/Editor/integration/shared/src/EditorValidationScenario.cpp
+++ b/tests/UI/Editor/integration/shared/src/EditorValidationScenario.cpp
@@ -0,0 +1,85 @@
+#include "EditorValidationScenario.h"
+
+#include <array>
+
+#ifndef XCENGINE_EDITOR_UI_TESTS_REPO_ROOT
+#define XCENGINE_EDITOR_UI_TESTS_REPO_ROOT "."
+#endif
+
+namespace XCEngine::Tests::EditorUI {
+
+namespace {
+
+namespace fs = std::filesystem;
+
+fs::path RepoRootPath() {
+    std::string root = XCENGINE_EDITOR_UI_TESTS_REPO_ROOT;
+    if (root.size() >= 2u && root.front() == '"' && root.back() == '"') {
+        root = root.substr(1u, root.size() - 2u);
+    }
+    return fs::path(root).lexically_normal();
+}
+
+fs::path RepoRelative(const char* relativePath) {
+    return (RepoRootPath() / relativePath).lexically_normal();
+}
+
+const std::array<EditorValidationScenario, 4>& GetEditorValidationScenarios() {
+    static const std::array<EditorValidationScenario, 4> scenarios = { {
+        {
+            "editor.input.keyboard_focus",
+            UIValidationDomain::Editor,
+            "input",
+            "Editor Input | Keyboard Focus",
+            RepoRelative("tests/UI/Editor/integration/input/keyboard_focus/View.xcui"),
+            RepoRelative("tests/UI/Editor/integration/shared/themes/editor_validation.xctheme"),
+            RepoRelative("tests/UI/Editor/integration/input/keyboard_focus/captures")
+        },
+        {
+            "editor.input.pointer_states",
+            UIValidationDomain::Editor,
+            "input",
+            "Editor Input | Pointer States",
+            RepoRelative("tests/UI/Editor/integration/input/pointer_states/View.xcui"),
+            RepoRelative("tests/UI/Editor/integration/shared/themes/editor_validation.xctheme"),
+            RepoRelative("tests/UI/Editor/integration/input/pointer_states/captures")
+        },
+        {
+            "editor.input.shortcut_scope",
+            UIValidationDomain::Editor,
+            "input",
+            "Editor Input | Shortcut Scope",
+            RepoRelative("tests/UI/Editor/integration/input/shortcut_scope/View.xcui"),
+            RepoRelative("tests/UI/Editor/integration/shared/themes/editor_validation.xctheme"),
+            RepoRelative("tests/UI/Editor/integration/input/shortcut_scope/captures")
+        },
+        {
+            "editor.layout.splitter_resize",
+            UIValidationDomain::Editor,
+            "layout",
+            "Editor Layout | Splitter Resize",
+            RepoRelative("tests/UI/Editor/integration/layout/splitter_resize/View.xcui"),
+            RepoRelative("tests/UI/Editor/integration/shared/themes/editor_validation.xctheme"),
+            RepoRelative("tests/UI/Editor/integration/layout/splitter_resize/captures")
+        }
+    } };
+    return scenarios;
+}
+
+} // namespace
+
+const EditorValidationScenario& GetDefaultEditorValidationScenario() {
+    return GetEditorValidationScenarios().front();
+}
+
+const EditorValidationScenario* FindEditorValidationScenario(std::string_view id) {
+    for (const EditorValidationScenario& scenario : GetEditorValidationScenarios()) {
+        if (scenario.id == id) {
+            return &scenario;
+        }
+    }
+
+    return nullptr;
+}
+
+} // namespace XCEngine::Tests::EditorUI
--- a/tests/UI/Editor/integration/shared/src/EditorValidationScenario.h
+++ b/tests/UI/Editor/integration/shared/src/EditorValidationScenario.h
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <filesystem>
+#include <string>
+#include <string_view>
+
+namespace XCEngine::Tests::EditorUI {
+
+enum class UIValidationDomain : unsigned char {
+    Editor = 0,
+    Runtime
+};
+
+struct EditorValidationScenario {
+    std::string id = {};
+    UIValidationDomain domain = UIValidationDomain::Editor;
+    std::string categoryId = {};
+    std::string displayName = {};
+    std::filesystem::path documentPath = {};
+    std::filesystem::path themePath = {};
+    std::filesystem::path captureRootPath = {};
+};
+
+const EditorValidationScenario& GetDefaultEditorValidationScenario();
+const EditorValidationScenario* FindEditorValidationScenario(std::string_view id);
+
+} // namespace XCEngine::Tests::EditorUI
--- a/tests/UI/Editor/integration/shared/themes/editor_validation.xctheme
+++ b/tests/UI/Editor/integration/shared/themes/editor_validation.xctheme
@@ -0,0 +1,32 @@
+<Theme name="EditorValidationTheme">
+  <Tokens>
+    <Color name="color.bg.workspace" value="#1C1C1C" />
+    <Color name="color.bg.panel" value="#292929" />
+    <Color name="color.bg.accent" value="#3A3A3A" />
+    <Color name="color.bg.selection" value="#4A4A4A" />
+    <Color name="color.text.primary" value="#EEEEEE" />
+    <Color name="color.text.muted" value="#B0B0B0" />
+    <Spacing name="space.panel" value="12" />
+    <Spacing name="space.shell" value="18" />
+    <Radius name="radius.panel" value="10" />
+    <Radius name="radius.control" value="8" />
+  </Tokens>
+
+  <Widgets>
+    <Widget type="View" style="EditorWorkspace">
+      <Property name="background" value="color.bg.workspace" />
+      <Property name="padding" value="space.shell" />
+    </Widget>
+
+    <Widget type="Card" style="EditorPanel">
+      <Property name="background" value="color.bg.panel" />
+      <Property name="radius" value="radius.panel" />
+      <Property name="padding" value="space.panel" />
+    </Widget>
+
+    <Widget type="Button" style="EditorChip">
+      <Property name="background" value="color.bg.selection" />
+      <Property name="radius" value="radius.control" />
+    </Widget>
+  </Widgets>
+</Theme>
--- a/tests/UI/Editor/unit/CMakeLists.txt
+++ b/tests/UI/Editor/unit/CMakeLists.txt
@@ -0,0 +1,35 @@
+set(EDITOR_UI_UNIT_TEST_SOURCES
+    test_input_modifier_tracker.cpp
+    test_editor_validation_registry.cpp
+    test_structured_editor_shell.cpp
+    # Migration bridge: editor-facing XCUI primitive tests still reuse the
+    # legacy source location until they are relocated under tests/UI/Editor/unit.
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_editor_collection_primitives.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_editor_panel_chrome.cpp
+)
+
+add_executable(editor_ui_tests ${EDITOR_UI_UNIT_TEST_SOURCES})
+
+target_link_libraries(editor_ui_tests
+    PRIVATE
+        editor_ui_validation_registry
+        XCNewEditorLib
+        GTest::gtest_main
+)
+
+target_include_directories(editor_ui_tests
+    PRIVATE
+        ${CMAKE_SOURCE_DIR}/new_editor/include
+        ${CMAKE_SOURCE_DIR}/new_editor/src
+        ${CMAKE_SOURCE_DIR}/engine/include
+        ${CMAKE_SOURCE_DIR}/tests/UI/Editor/integration/shared/src
+)
+
+if(MSVC)
+    target_compile_options(editor_ui_tests PRIVATE /utf-8 /FS)
+    set_property(TARGET editor_ui_tests PROPERTY
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+endif()
+
+include(GoogleTest)
+gtest_discover_tests(editor_ui_tests)
--- a/tests/UI/Editor/unit/test_editor_validation_registry.cpp
+++ b/tests/UI/Editor/unit/test_editor_validation_registry.cpp
@@ -0,0 +1,48 @@
+#include <gtest/gtest.h>
+
+#include "EditorValidationScenario.h"
+
+#include <filesystem>
+
+namespace {
+
+using XCEngine::Tests::EditorUI::FindEditorValidationScenario;
+using XCEngine::Tests::EditorUI::GetDefaultEditorValidationScenario;
+using XCEngine::Tests::EditorUI::UIValidationDomain;
+
+} // namespace
+
+TEST(EditorValidationRegistryTest, KnownEditorValidationScenariosResolveToExistingResources) {
+    const auto* pointerScenario = FindEditorValidationScenario("editor.input.pointer_states");
+    const auto* keyboardScenario = FindEditorValidationScenario("editor.input.keyboard_focus");
+    const auto* shortcutScenario = FindEditorValidationScenario("editor.input.shortcut_scope");
+    const auto* splitterScenario = FindEditorValidationScenario("editor.layout.splitter_resize");
+
+    ASSERT_NE(pointerScenario, nullptr);
+    ASSERT_NE(keyboardScenario, nullptr);
+    ASSERT_NE(shortcutScenario, nullptr);
+    ASSERT_NE(splitterScenario, nullptr);
+    EXPECT_EQ(pointerScenario->domain, UIValidationDomain::Editor);
+    EXPECT_EQ(keyboardScenario->domain, UIValidationDomain::Editor);
+    EXPECT_EQ(shortcutScenario->domain, UIValidationDomain::Editor);
+    EXPECT_EQ(splitterScenario->domain, UIValidationDomain::Editor);
+    EXPECT_EQ(pointerScenario->categoryId, "input");
+    EXPECT_EQ(keyboardScenario->categoryId, "input");
+    EXPECT_EQ(shortcutScenario->categoryId, "input");
+    EXPECT_EQ(splitterScenario->categoryId, "layout");
+    EXPECT_TRUE(std::filesystem::exists(pointerScenario->documentPath));
+    EXPECT_TRUE(std::filesystem::exists(pointerScenario->themePath));
+    EXPECT_TRUE(std::filesystem::exists(keyboardScenario->documentPath));
+    EXPECT_TRUE(std::filesystem::exists(keyboardScenario->themePath));
+    EXPECT_TRUE(std::filesystem::exists(shortcutScenario->documentPath));
+    EXPECT_TRUE(std::filesystem::exists(shortcutScenario->themePath));
+    EXPECT_TRUE(std::filesystem::exists(splitterScenario->documentPath));
+    EXPECT_TRUE(std::filesystem::exists(splitterScenario->themePath));
+}
+
+TEST(EditorValidationRegistryTest, DefaultScenarioPointsToKeyboardFocusBatch) {
+    const auto& scenario = GetDefaultEditorValidationScenario();
+    EXPECT_EQ(scenario.id, "editor.input.keyboard_focus");
+    EXPECT_EQ(scenario.domain, UIValidationDomain::Editor);
+    EXPECT_TRUE(std::filesystem::exists(scenario.documentPath));
+}
--- a/tests/UI/Editor/unit/test_input_modifier_tracker.cpp
+++ b/tests/UI/Editor/unit/test_input_modifier_tracker.cpp
@@ -0,0 +1,90 @@
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+
+#include <gtest/gtest.h>
+
+#include <XCNewEditor/Host/InputModifierTracker.h>
+
+#include <XCEngine/UI/Types.h>
+
+#include <windows.h>
+
+namespace {
+
+using XCEngine::XCUI::Host::InputModifierTracker;
+using XCEngine::UI::UIInputEventType;
+
+TEST(InputModifierTrackerTest, ControlStatePersistsAcrossChordKeyDownAndClearsOnKeyUp) {
+    InputModifierTracker tracker = {};
+
+    const auto ctrlDown = tracker.ApplyKeyMessage(
+        UIInputEventType::KeyDown,
+        VK_CONTROL,
+        0x001D0001);
+    EXPECT_TRUE(ctrlDown.control);
+    EXPECT_FALSE(ctrlDown.shift);
+    EXPECT_FALSE(ctrlDown.alt);
+
+    const auto chordKeyDown = tracker.ApplyKeyMessage(
+        UIInputEventType::KeyDown,
+        'P',
+        0x00190001);
+    EXPECT_TRUE(chordKeyDown.control);
+
+    const auto ctrlUp = tracker.ApplyKeyMessage(
+        UIInputEventType::KeyUp,
+        VK_CONTROL,
+        static_cast<LPARAM>(0xC01D0001u));
+    EXPECT_FALSE(ctrlUp.control);
+
+    const auto nextKeyDown = tracker.ApplyKeyMessage(
+        UIInputEventType::KeyDown,
+        'P',
+        0x00190001);
+    EXPECT_FALSE(nextKeyDown.control);
+}
+
+TEST(InputModifierTrackerTest, PointerModifiersMergeMouseFlagsWithTrackedKeyboardState) {
+    InputModifierTracker tracker = {};
+    tracker.ApplyKeyMessage(
+        UIInputEventType::KeyDown,
+        VK_MENU,
+        0x00380001);
+
+    const auto modifiers = tracker.BuildPointerModifiers(MK_SHIFT);
+    EXPECT_TRUE(modifiers.shift);
+    EXPECT_TRUE(modifiers.alt);
+    EXPECT_FALSE(modifiers.control);
+    EXPECT_FALSE(modifiers.super);
+}
+
+TEST(InputModifierTrackerTest, RightControlIsTrackedIndependentlyFromLeftControl) {
+    InputModifierTracker tracker = {};
+
+    tracker.ApplyKeyMessage(
+        UIInputEventType::KeyDown,
+        VK_CONTROL,
+        static_cast<LPARAM>(0x011D0001u));
+    EXPECT_TRUE(tracker.GetCurrentModifiers().control);
+
+    tracker.ApplyKeyMessage(
+        UIInputEventType::KeyDown,
+        VK_CONTROL,
+        0x001D0001);
+    EXPECT_TRUE(tracker.GetCurrentModifiers().control);
+
+    tracker.ApplyKeyMessage(
+        UIInputEventType::KeyUp,
+        VK_CONTROL,
+        static_cast<LPARAM>(0xC11D0001u));
+    EXPECT_TRUE(tracker.GetCurrentModifiers().control);
+
+    tracker.ApplyKeyMessage(
+        UIInputEventType::KeyUp,
+        VK_CONTROL,
+        static_cast<LPARAM>(0xC01D0001u));
+    EXPECT_FALSE(tracker.GetCurrentModifiers().control);
+}
+
+} // namespace
--- a/tests/UI/Editor/unit/test_structured_editor_shell.cpp
+++ b/tests/UI/Editor/unit/test_structured_editor_shell.cpp
@@ -0,0 +1,93 @@
+#include <gtest/gtest.h>
+
+#include "editor/EditorShellAsset.h"
+
+#include <XCEngine/UI/Runtime/UIScreenDocumentHost.h>
+#include <XCEngine/UI/Runtime/UIScreenPlayer.h>
+
+#include <filesystem>
+#include <string>
+#include <vector>
+
+#ifndef XCNEWEDITOR_REPO_ROOT
+#define XCNEWEDITOR_REPO_ROOT "."
+#endif
+
+namespace {
+
+using XCEngine::NewEditor::BuildDefaultEditorShellAsset;
+using XCEngine::UI::UIDrawCommand;
+using XCEngine::UI::UIDrawCommandType;
+using XCEngine::UI::UIDrawData;
+using XCEngine::UI::Runtime::UIScreenAsset;
+using XCEngine::UI::Runtime::UIScreenFrameInput;
+using XCEngine::UI::Runtime::UIScreenPlayer;
+using XCEngine::UI::Runtime::UIDocumentScreenHost;
+
+std::filesystem::path RepoRootPath() {
+    std::string root = XCNEWEDITOR_REPO_ROOT;
+    if (root.size() >= 2u && root.front() == '"' && root.back() == '"') {
+        root = root.substr(1u, root.size() - 2u);
+    }
+    return std::filesystem::path(root).lexically_normal();
+}
+
+bool DrawDataContainsText(const UIDrawData& drawData, const std::string& text) {
+    for (const auto& drawList : drawData.GetDrawLists()) {
+        for (const UIDrawCommand& command : drawList.GetCommands()) {
+            if (command.type == UIDrawCommandType::Text && command.text == text) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+bool ContainsPathWithFilename(
+    const std::vector<std::string>& paths,
+    const char* expectedFileName) {
+    for (const std::string& path : paths) {
+        if (std::filesystem::path(path).filename() == expectedFileName) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+} // namespace
+
+TEST(EditorUIStructuredShellTest, AuthoredEditorShellLoadsFromRepositoryResources) {
+    const auto shell = BuildDefaultEditorShellAsset(RepoRootPath());
+
+    ASSERT_TRUE(std::filesystem::exists(shell.documentPath));
+    ASSERT_TRUE(std::filesystem::exists(shell.themePath));
+
+    UIScreenAsset asset = {};
+    asset.screenId = shell.screenId;
+    asset.documentPath = shell.documentPath.string();
+    asset.themePath = shell.themePath.string();
+
+    UIDocumentScreenHost host = {};
+    UIScreenPlayer player(host);
+
+    ASSERT_TRUE(player.Load(asset)) << player.GetLastError();
+    ASSERT_NE(player.GetDocument(), nullptr);
+    EXPECT_TRUE(player.GetDocument()->hasThemeDocument);
+    EXPECT_TRUE(ContainsPathWithFilename(player.GetDocument()->dependencies, "editor_shell.xctheme"));
+
+    UIScreenFrameInput input = {};
+    input.viewportRect = XCEngine::UI::UIRect(0.0f, 0.0f, 1440.0f, 900.0f);
+    input.frameIndex = 1u;
+    input.focused = true;
+
+    const auto& frame = player.Update(input);
+    EXPECT_TRUE(frame.stats.documentLoaded);
+    EXPECT_GE(frame.stats.nodeCount, 2u);
+    EXPECT_FALSE(DrawDataContainsText(frame.drawData, "XCUI Editor Layer"));
+    EXPECT_FALSE(DrawDataContainsText(frame.drawData, "Left Pane Host"));
+    EXPECT_FALSE(DrawDataContainsText(frame.drawData, "Primary Workspace Host"));
+    EXPECT_FALSE(DrawDataContainsText(frame.drawData, "Right Pane Host"));
+    EXPECT_FALSE(DrawDataContainsText(frame.drawData, "Bottom Pane Host"));
+}
--- a/tests/UI/Runtime/CMakeLists.txt
+++ b/tests/UI/Runtime/CMakeLists.txt
@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.15)
+
+project(XCEngine_RuntimeUITests)
+
+add_subdirectory(unit)
+add_subdirectory(integration)
+
+add_custom_target(runtime_ui_unit_tests
+    DEPENDS
+        runtime_ui_tests
+)
+
+add_custom_target(runtime_ui_all_tests
+    DEPENDS
+        runtime_ui_unit_tests
+        runtime_ui_integration_tests
+)
--- a/tests/UI/Runtime/integration/CMakeLists.txt
+++ b/tests/UI/Runtime/integration/CMakeLists.txt
@@ -0,0 +1 @@
+add_custom_target(runtime_ui_integration_tests)
--- a/tests/UI/Runtime/integration/README.md
+++ b/tests/UI/Runtime/integration/README.md
@@ -0,0 +1,11 @@
+# Runtime UI Integration Validation
+
+This directory is reserved for interactive XCUI runtime validation apps.
+
+Planned scope:
+
+- HUD and menu layer-stack validation
+- Runtime input routing and blocking rules
+- Screen stack and modal transitions
+
+For now the runtime UI lane only has automated unit coverage in `tests/UI/Runtime/unit/`.
--- a/tests/UI/Runtime/unit/CMakeLists.txt
+++ b/tests/UI/Runtime/unit/CMakeLists.txt
@@ -0,0 +1,28 @@
+set(RUNTIME_UI_TEST_SOURCES
+    ${CMAKE_SOURCE_DIR}/tests/UI/Runtime/unit/test_ui_runtime_shortcut_scope.cpp
+    ${CMAKE_SOURCE_DIR}/tests/UI/Runtime/unit/test_ui_runtime_splitter_validation.cpp
+    ${CMAKE_SOURCE_DIR}/tests/Core/UI/test_ui_runtime.cpp
+)
+
+add_executable(runtime_ui_tests ${RUNTIME_UI_TEST_SOURCES})
+
+if(MSVC)
+    set_target_properties(runtime_ui_tests PROPERTIES
+        LINK_FLAGS "/NODEFAULTLIB:libcpmt.lib /NODEFAULTLIB:libcmt.lib"
+    )
+endif()
+
+target_link_libraries(runtime_ui_tests
+    PRIVATE
+    XCEngine
+    GTest::gtest
+    GTest::gtest_main
+)
+
+target_include_directories(runtime_ui_tests PRIVATE
+    ${CMAKE_SOURCE_DIR}/engine/include
+    ${CMAKE_SOURCE_DIR}/tests/Fixtures
+)
+
+include(GoogleTest)
+gtest_discover_tests(runtime_ui_tests)
--- a/tests/UI/Runtime/unit/test_ui_runtime_shortcut_scope.cpp
+++ b/tests/UI/Runtime/unit/test_ui_runtime_shortcut_scope.cpp
@@ -0,0 +1,305 @@
+#include <gtest/gtest.h>
+
+#include <XCEngine/Input/InputTypes.h>
+#include <XCEngine/UI/Runtime/UIScreenDocumentHost.h>
+#include <XCEngine/UI/Runtime/UIScreenPlayer.h>
+
+#include <chrono>
+#include <filesystem>
+#include <fstream>
+#include <limits>
+#include <string>
+
+namespace {
+
+using XCEngine::Input::KeyCode;
+using XCEngine::UI::UIDrawCommand;
+using XCEngine::UI::UIDrawCommandType;
+using XCEngine::UI::UIPoint;
+using XCEngine::UI::UIRect;
+using XCEngine::UI::Runtime::UIScreenAsset;
+using XCEngine::UI::Runtime::UIScreenFrameInput;
+using XCEngine::UI::Runtime::UIScreenPlayer;
+using XCEngine::UI::Runtime::UIDocumentScreenHost;
+
+namespace fs = std::filesystem;
+
+class TempFileScope {
+public:
+    TempFileScope(std::string stem, std::string extension, std::string contents) {
+        const auto uniqueId = std::to_string(
+            std::chrono::steady_clock::now().time_since_epoch().count());
+        m_path = fs::temp_directory_path() / (std::move(stem) + "_" + uniqueId + std::move(extension));
+        std::ofstream output(m_path, std::ios::binary | std::ios::trunc);
+        output << contents;
+    }
+
+    ~TempFileScope() {
+        std::error_code ec;
+        fs::remove(m_path, ec);
+    }
+
+    const fs::path& Path() const {
+        return m_path;
+    }
+
+private:
+    fs::path m_path = {};
+};
+
+UIScreenAsset BuildScreenAsset(const fs::path& viewPath, const char* screenId) {
+    UIScreenAsset screen = {};
+    screen.screenId = screenId;
+    screen.documentPath = viewPath.string();
+    return screen;
+}
+
+UIScreenFrameInput BuildInputState(std::uint64_t frameIndex = 1u) {
+    UIScreenFrameInput input = {};
+    input.viewportRect = UIRect(0.0f, 0.0f, 960.0f, 720.0f);
+    input.frameIndex = frameIndex;
+    input.focused = true;
+    return input;
+}
+
+const UIDrawCommand* FindTextCommand(
+    const XCEngine::UI::UIDrawData& drawData,
+    const std::string& text) {
+    for (const auto& drawList : drawData.GetDrawLists()) {
+        for (const UIDrawCommand& command : drawList.GetCommands()) {
+            if (command.type == UIDrawCommandType::Text && command.text == text) {
+                return &command;
+            }
+        }
+    }
+
+    return nullptr;
+}
+
+bool RectContainsPoint(
+    const UIRect& rect,
+    const UIPoint& point) {
+    return point.x >= rect.x &&
+        point.x <= rect.x + rect.width &&
+        point.y >= rect.y &&
+        point.y <= rect.y + rect.height;
+}
+
+bool TryFindSmallestFilledRectContainingPoint(
+    const XCEngine::UI::UIDrawData& drawData,
+    const UIPoint& point,
+    UIRect& outRect) {
+    bool found = false;
+    float bestArea = (std::numeric_limits<float>::max)();
+
+    for (const auto& drawList : drawData.GetDrawLists()) {
+        for (const UIDrawCommand& command : drawList.GetCommands()) {
+            if (command.type != UIDrawCommandType::FilledRect ||
+                !RectContainsPoint(command.rect, point)) {
+                continue;
+            }
+
+            const float area = command.rect.width * command.rect.height;
+            if (!found || area < bestArea) {
+                outRect = command.rect;
+                bestArea = area;
+                found = true;
+            }
+        }
+    }
+
+    return found;
+}
+
+bool TryFindFilledRectForText(
+    const XCEngine::UI::UIDrawData& drawData,
+    const std::string& text,
+    UIRect& outRect) {
+    const auto* textCommand = FindTextCommand(drawData, text);
+    return textCommand != nullptr &&
+        TryFindSmallestFilledRectContainingPoint(drawData, textCommand->position, outRect);
+}
+
+UIPoint GetRectCenter(const UIRect& rect) {
+    return UIPoint(rect.x + rect.width * 0.5f, rect.y + rect.height * 0.5f);
+}
+
+void FocusButton(
+    UIScreenPlayer& player,
+    const UIRect& viewportRect,
+    std::uint64_t& frameIndex,
+    const UIPoint& point) {
+    UIScreenFrameInput downInput = BuildInputState(frameIndex++);
+    downInput.viewportRect = viewportRect;
+    XCEngine::UI::UIInputEvent pointerDown = {};
+    pointerDown.type = XCEngine::UI::UIInputEventType::PointerButtonDown;
+    pointerDown.pointerButton = XCEngine::UI::UIPointerButton::Left;
+    pointerDown.position = point;
+    downInput.events.push_back(pointerDown);
+    player.Update(downInput);
+
+    UIScreenFrameInput upInput = BuildInputState(frameIndex++);
+    upInput.viewportRect = viewportRect;
+    XCEngine::UI::UIInputEvent pointerUp = {};
+    pointerUp.type = XCEngine::UI::UIInputEventType::PointerButtonUp;
+    pointerUp.pointerButton = XCEngine::UI::UIPointerButton::Left;
+    pointerUp.position = point;
+    upInput.events.push_back(pointerUp);
+    player.Update(upInput);
+}
+
+void SendCtrlP(
+    UIScreenPlayer& player,
+    const UIRect& viewportRect,
+    std::uint64_t& frameIndex) {
+    UIScreenFrameInput input = BuildInputState(frameIndex++);
+    input.viewportRect = viewportRect;
+    XCEngine::UI::UIInputEvent event = {};
+    event.type = XCEngine::UI::UIInputEventType::KeyDown;
+    event.keyCode = static_cast<std::int32_t>(KeyCode::P);
+    event.modifiers.control = true;
+    input.events.push_back(event);
+    player.Update(input);
+}
+
+void SendTab(
+    UIScreenPlayer& player,
+    const UIRect& viewportRect,
+    std::uint64_t& frameIndex) {
+    UIScreenFrameInput input = BuildInputState(frameIndex++);
+    input.viewportRect = viewportRect;
+    XCEngine::UI::UIInputEvent event = {};
+    event.type = XCEngine::UI::UIInputEventType::KeyDown;
+    event.keyCode = static_cast<std::int32_t>(KeyCode::Tab);
+    input.events.push_back(event);
+    player.Update(input);
+}
+
+} // namespace
+
+TEST(UIRuntimeShortcutScopeTest, DocumentHostRoutesFocusedShortcutThroughWidgetPanelWindowAndGlobalScopes) {
+    TempFileScope viewFile(
+        "xcui_runtime_shortcut_scope",
+        ".xcui",
+        "<View name=\"Shortcut Scope Test\" shortcut=\"Ctrl+P\" shortcutCommand=\"global.command\" shortcutScope=\"global\">\n"
+        "  <Column id=\"root\" padding=\"18\" gap=\"12\">\n"
+        "    <Button id=\"global-focus\" text=\"Global Focus\" />\n"
+        "    <Card id=\"window-shell\" title=\"Window Scope\" shortcutScopeRoot=\"window\" shortcut=\"Ctrl+P\" shortcutCommand=\"window.command\" shortcutScope=\"window\">\n"
+        "      <Column gap=\"10\">\n"
+        "        <Button id=\"window-focus\" text=\"Window Focus\" />\n"
+        "        <Card id=\"panel-shell\" title=\"Panel Scope\" shortcutScopeRoot=\"panel\" shortcut=\"Ctrl+P\" shortcutCommand=\"panel.command\" shortcutScope=\"panel\">\n"
+        "          <Column gap=\"10\">\n"
+        "            <Button id=\"panel-focus\" text=\"Panel Focus\" />\n"
+        "            <Card id=\"widget-shell\" title=\"Widget Scope\" shortcutScopeRoot=\"widget\" shortcut=\"Ctrl+P\" shortcutCommand=\"widget.command\" shortcutScope=\"widget\">\n"
+        "              <Column gap=\"10\">\n"
+        "                <Button id=\"widget-focus\" text=\"Widget Focus\" />\n"
+        "              </Column>\n"
+        "            </Card>\n"
+        "          </Column>\n"
+        "        </Card>\n"
+        "      </Column>\n"
+        "    </Card>\n"
+        "  </Column>\n"
+        "</View>\n");
+    UIDocumentScreenHost host = {};
+    UIScreenPlayer player(host);
+
+    ASSERT_TRUE(player.Load(BuildScreenAsset(viewFile.Path(), "runtime.shortcut.scope")));
+
+    UIScreenFrameInput initialInput = BuildInputState(1u);
+    initialInput.viewportRect = UIRect(0.0f, 0.0f, 960.0f, 720.0f);
+    const auto& initialFrame = player.Update(initialInput);
+
+    UIRect globalRect = {};
+    UIRect windowRect = {};
+    UIRect panelRect = {};
+    UIRect widgetRect = {};
+    ASSERT_TRUE(TryFindFilledRectForText(initialFrame.drawData, "Global Focus", globalRect));
+    ASSERT_TRUE(TryFindFilledRectForText(initialFrame.drawData, "Window Focus", windowRect));
+    ASSERT_TRUE(TryFindFilledRectForText(initialFrame.drawData, "Panel Focus", panelRect));
+    ASSERT_TRUE(TryFindFilledRectForText(initialFrame.drawData, "Widget Focus", widgetRect));
+
+    std::uint64_t frameIndex = 2u;
+
+    FocusButton(player, initialInput.viewportRect, frameIndex, GetRectCenter(widgetRect));
+    SendCtrlP(player, initialInput.viewportRect, frameIndex);
+    auto inputDebug = host.GetInputDebugSnapshot();
+    EXPECT_EQ(inputDebug.lastShortcutCommandId, "widget.command");
+    EXPECT_EQ(inputDebug.lastShortcutScope, "Widget");
+    EXPECT_TRUE(inputDebug.lastShortcutHandled);
+    EXPECT_NE(inputDebug.focusedStateKey.find("/widget-focus"), std::string::npos);
+    EXPECT_NE(inputDebug.widgetScopeStateKey.find("/widget-shell"), std::string::npos);
+    EXPECT_NE(inputDebug.panelScopeStateKey.find("/panel-shell"), std::string::npos);
+    EXPECT_NE(inputDebug.windowScopeStateKey.find("/window-shell"), std::string::npos);
+
+    FocusButton(player, initialInput.viewportRect, frameIndex, GetRectCenter(panelRect));
+    SendCtrlP(player, initialInput.viewportRect, frameIndex);
+    inputDebug = host.GetInputDebugSnapshot();
+    EXPECT_EQ(inputDebug.lastShortcutCommandId, "panel.command");
+    EXPECT_EQ(inputDebug.lastShortcutScope, "Panel");
+    EXPECT_TRUE(inputDebug.lastShortcutHandled);
+    EXPECT_NE(inputDebug.focusedStateKey.find("/panel-focus"), std::string::npos);
+
+    FocusButton(player, initialInput.viewportRect, frameIndex, GetRectCenter(windowRect));
+    SendCtrlP(player, initialInput.viewportRect, frameIndex);
+    inputDebug = host.GetInputDebugSnapshot();
+    EXPECT_EQ(inputDebug.lastShortcutCommandId, "window.command");
+    EXPECT_EQ(inputDebug.lastShortcutScope, "Window");
+    EXPECT_TRUE(inputDebug.lastShortcutHandled);
+    EXPECT_NE(inputDebug.focusedStateKey.find("/window-focus"), std::string::npos);
+
+    FocusButton(player, initialInput.viewportRect, frameIndex, GetRectCenter(globalRect));
+    SendCtrlP(player, initialInput.viewportRect, frameIndex);
+    inputDebug = host.GetInputDebugSnapshot();
+    EXPECT_EQ(inputDebug.lastShortcutCommandId, "global.command");
+    EXPECT_EQ(inputDebug.lastShortcutScope, "Global");
+    EXPECT_TRUE(inputDebug.lastShortcutHandled);
+    EXPECT_NE(inputDebug.focusedStateKey.find("/global-focus"), std::string::npos);
+}
+
+TEST(UIRuntimeShortcutScopeTest, DocumentHostSuppresssShortcutAndTabTraversalWhenTextInputScopeIsFocused) {
+    TempFileScope viewFile(
+        "xcui_runtime_shortcut_suppression",
+        ".xcui",
+        "<View name=\"Shortcut Suppression Test\" shortcut=\"Ctrl+P\" shortcutCommand=\"global.command\" shortcutScope=\"global\">\n"
+        "  <Column padding=\"18\" gap=\"12\">\n"
+        "    <Card id=\"panel-shell\" title=\"Panel Scope\" shortcutScopeRoot=\"panel\" shortcut=\"Ctrl+P\" shortcutCommand=\"panel.command\" shortcutScope=\"panel\">\n"
+        "      <Column gap=\"10\">\n"
+        "        <Button id=\"text-input\" text=\"Text Input Proxy\" textInput=\"true\" />\n"
+        "        <Button id=\"after-text\" text=\"After Text\" />\n"
+        "      </Column>\n"
+        "    </Card>\n"
+        "  </Column>\n"
+        "</View>\n");
+    UIDocumentScreenHost host = {};
+    UIScreenPlayer player(host);
+
+    ASSERT_TRUE(player.Load(BuildScreenAsset(viewFile.Path(), "runtime.shortcut.suppression")));
+
+    UIScreenFrameInput initialInput = BuildInputState(1u);
+    initialInput.viewportRect = UIRect(0.0f, 0.0f, 900.0f, 520.0f);
+    const auto& initialFrame = player.Update(initialInput);
+
+    UIRect textInputRect = {};
+    ASSERT_TRUE(TryFindFilledRectForText(initialFrame.drawData, "Text Input Proxy", textInputRect));
+
+    std::uint64_t frameIndex = 2u;
+    FocusButton(player, initialInput.viewportRect, frameIndex, GetRectCenter(textInputRect));
+    SendCtrlP(player, initialInput.viewportRect, frameIndex);
+
+    auto inputDebug = host.GetInputDebugSnapshot();
+    EXPECT_TRUE(inputDebug.textInputActive);
+    EXPECT_EQ(inputDebug.lastShortcutCommandId, "panel.command");
+    EXPECT_EQ(inputDebug.lastShortcutScope, "Panel");
+    EXPECT_FALSE(inputDebug.lastShortcutHandled);
+    EXPECT_TRUE(inputDebug.lastShortcutSuppressed);
+    EXPECT_EQ(inputDebug.lastResult, "Shortcut suppressed by text input");
+    EXPECT_NE(inputDebug.focusedStateKey.find("/text-input"), std::string::npos);
+    EXPECT_NE(inputDebug.panelScopeStateKey.find("/panel-shell"), std::string::npos);
+
+    SendTab(player, initialInput.viewportRect, frameIndex);
+    inputDebug = host.GetInputDebugSnapshot();
+    EXPECT_TRUE(inputDebug.textInputActive);
+    EXPECT_EQ(inputDebug.lastResult, "Focus traversal suppressed by text input");
+    EXPECT_NE(inputDebug.focusedStateKey.find("/text-input"), std::string::npos);
+}
--- a/tests/UI/Runtime/unit/test_ui_runtime_splitter_validation.cpp
+++ b/tests/UI/Runtime/unit/test_ui_runtime_splitter_validation.cpp
@@ -0,0 +1,82 @@
+#include <gtest/gtest.h>
+
+#include <XCEngine/UI/Runtime/UIScreenDocumentHost.h>
+#include <XCEngine/UI/Runtime/UIScreenPlayer.h>
+
+#include <chrono>
+#include <filesystem>
+#include <fstream>
+#include <string>
+
+namespace {
+
+using XCEngine::UI::UIRect;
+using XCEngine::UI::Runtime::UIScreenAsset;
+using XCEngine::UI::Runtime::UIScreenFrameInput;
+using XCEngine::UI::Runtime::UIScreenPlayer;
+using XCEngine::UI::Runtime::UIDocumentScreenHost;
+
+namespace fs = std::filesystem;
+
+class TempFileScope {
+public:
+    TempFileScope(std::string stem, std::string extension, std::string contents) {
+        const auto uniqueId = std::to_string(
+            std::chrono::steady_clock::now().time_since_epoch().count());
+        m_path = fs::temp_directory_path() / (std::move(stem) + "_" + uniqueId + std::move(extension));
+        std::ofstream output(m_path, std::ios::binary | std::ios::trunc);
+        output << contents;
+    }
+
+    ~TempFileScope() {
+        std::error_code ec;
+        fs::remove(m_path, ec);
+    }
+
+    const fs::path& Path() const {
+        return m_path;
+    }
+
+private:
+    fs::path m_path = {};
+};
+
+UIScreenAsset BuildScreenAsset(const fs::path& viewPath, const char* screenId) {
+    UIScreenAsset screen = {};
+    screen.screenId = screenId;
+    screen.documentPath = viewPath.string();
+    return screen;
+}
+
+UIScreenFrameInput BuildInputState(std::uint64_t frameIndex = 1u) {
+    UIScreenFrameInput input = {};
+    input.viewportRect = UIRect(0.0f, 0.0f, 960.0f, 720.0f);
+    input.frameIndex = frameIndex;
+    input.focused = true;
+    return input;
+}
+
+} // namespace
+
+TEST(UIRuntimeSplitterValidationTest, InvalidSplitterArityProducesExplicitFrameError) {
+    TempFileScope viewFile(
+        "xcui_runtime_invalid_splitter",
+        ".xcui",
+        "<View name=\"Invalid Splitter Test\">\n"
+        "  <Column padding=\"16\" gap=\"10\">\n"
+        "    <Splitter id=\"broken-splitter\" axis=\"horizontal\" splitRatio=\"0.5\">\n"
+        "      <Card title=\"Only Child\" />\n"
+        "    </Splitter>\n"
+        "  </Column>\n"
+        "</View>\n");
+
+    UIDocumentScreenHost host = {};
+    UIScreenPlayer player(host);
+
+    ASSERT_TRUE(player.Load(BuildScreenAsset(viewFile.Path(), "runtime.invalid_splitter")));
+
+    const auto& frame = player.Update(BuildInputState());
+    EXPECT_FALSE(frame.errorMessage.empty());
+    EXPECT_NE(frame.errorMessage.find("broken-splitter"), std::string::npos);
+    EXPECT_NE(frame.errorMessage.find("exactly 2 child elements"), std::string::npos);
+}
--- a/tests/UI/TEST_SPEC.md
+++ b/tests/UI/TEST_SPEC.md
@@ -0,0 +1,165 @@
+# XCUI TEST_SPEC
+
+日期: `2026-04-06`
+
+## 1. 目标
+
+本规范只约束 XCUI 模块自身的测试体系，不负责复刻完整 editor 产品。
+
+XCUI 测试体系固定为两条并行通道：
+
+1. `unit`
+2. `integration`
+
+两者必须同时存在，但职责严格分离：
+
+- `unit` 负责规则、状态机、路由与回归稳定性，默认可自动执行。
+- `integration` 负责生成可操作 exe，让人直接检查交互、布局、焦点、shortcut、滚动与视觉状态。
+
+## 2. 顶层目录
+
+XCUI 的测试树统一放在：
+
+```text
+tests/UI/
+  TEST_SPEC.md
+  Core/
+    unit/
+    integration/
+  Runtime/
+    unit/
+    integration/
+  Editor/
+    unit/
+    integration/
+```
+
+三层必须明确分开：
+
+- `Core`
+  - 共享 UI 基础层测试。
+  - 例如 tree state、layout、focus、input router、shortcut、scroll、text controller。
+- `Runtime`
+  - 面向游戏运行时 UI 的测试。
+  - 例如 screen stack、layer blocking、runtime 输入路由、runtime-only widget。
+- `Editor`
+  - 面向编辑器 UI 的测试。
+  - 例如 editor 输入宿主、editor shell 验证场景、editor-only widget。
+
+禁止把 `Runtime` 和 `Editor` 混在同一个测试目标里。
+
+## 3. Unit 规范
+
+`unit` 测试要求：
+
+- 直接面向底层能力。
+- 不依赖人工观察。
+- 默认进入自动化回归。
+- 新增一块共享能力时，优先先补 `unit`。
+
+`unit` 测试不负责：
+
+- 人工手感检查。
+- 布局观感检查。
+- 完整交互场景展示。
+
+## 4. Integration 规范
+
+`integration` 测试要求：
+
+- 必须产出可直接运行的 exe。
+- 一个 exe 只验证一个聚焦场景。
+- 每次只暴露当前批次需要检查的操作区域，不做大杂烩面板。
+- 界面中的操作提示默认使用中文，必要时可混用 `hover`、`focus`、`active`、`capture` 等术语。
+
+`integration` 测试不负责：
+
+- 模拟完整 editor 产品外壳。
+- 把多个无关能力塞进同一个窗口。
+- 代替底层 `unit` 回归。
+
+## 5. Scenario 目录规范
+
+### 5.1 Editor
+
+```text
+tests/UI/Editor/integration/
+  shared/
+    src/
+  <category>/
+    <scenario>/
+      CMakeLists.txt
+      main.cpp
+      View.xcui
+      captures/
+```
+
+约束：
+
+- `shared/` 只放宿主、渲染、截图、scenario registry 等共用基础设施。
+- `<category>` 表示能力类别，例如 `input`。
+- `<scenario>` 是最小验证单元。
+- 一个 `<scenario>` 对应一个 exe。
+
+### 5.2 Runtime
+
+```text
+tests/UI/Runtime/integration/
+  <category>/
+    <scenario>/
+      CMakeLists.txt
+      main.cpp
+      View.xcui
+      captures/
+```
+
+Runtime 的集成测试结构与 Editor 保持同一规范，但宿主职责必须与 Editor 分离。
+
+## 6. 当前已有 Editor 场景
+
+- `editor.input.keyboard_focus`
+- `editor.input.pointer_states`
+- `editor.input.shortcut_scope`
+- `editor.layout.splitter_resize`
+
+这些场景只用于验证 XCUI 模块能力，不代表开始复刻完整 editor 面板。
+
+## 7. 截图规范
+
+Editor 集成宿主支持：
+
+- `F12` 手动截图。
+- 截图只允许截当前 exe 自己的渲染结果。
+- 截图输出到当前 scenario 自己的 `captures/` 目录。
+
+输出格式：
+
+- `captures/latest.png`
+- `captures/history/<timestamp>_<index>_<reason>.png`
+
+原则：
+
+- 不做持续高频自动截图轰炸。
+- 只在人工检查、问题复现、调试定位时触发截图。
+
+## 8. 开发顺序
+
+XCUI 必须坚持自底向上的建设顺序：
+
+1. 先补共享底层能力。
+2. 先补对应 `unit`。
+3. 再补一个聚焦的 `integration` exe。
+4. 人工检查通过后再继续向上推进。
+
+禁止事项：
+
+- 先堆 editor 具体面板，再回头补底层。
+- 把 `new_editor` 当作 XCUI 主测试入口。
+- 把一个验证 exe 做成综合试验场。
+- 为了赶进度写跨层耦合的临时代码。
+
+## 9. 当前入口约定
+
+当前 XCUI 的正式验证入口是 `tests/UI`。
+
+`new_editor` 不是后续 XCUI 测试体系的主入口，也不应继续承载新的测试场景扩展。
				`@@ -0,0 +1 @@`
				`add_custom_target(core_ui_integration_tests)`
				`@@ -0,0 +1 @@`
				`add_custom_target(runtime_ui_integration_tests)`