diff --git a/editor/AGENTS.md b/editor/AGENTS.md
index a68cce0b..b73c39ed 100644
--- a/editor/AGENTS.md
+++ b/editor/AGENTS.md
@@ -12,18 +12,19 @@
 - UI widget / shell / workspace 代码优先保持 model/state/request/frame/result 风格。新增行为要能被 `tests/UI/Editor/unit` 以纯状态方式测试。
 - scene/project 的用户操作应通过 runtime 或 command route 进入，不要在 draw/append 阶段直接改 scene 或文件系统。
 - scene 渲染私有逻辑不要塞进 panel 或 shell。新增渲染能力时先判断它属于 engine `Rendering/RHI`、editor viewport pass bundle，还是 UI overlay。
+- 运行时路径以 `app/Core/Environment/EditorRuntimePaths.h` 为显式契约。workspace、executable、resource、project、capture 根路径由 bootstrap 一次性解析并向下传递；不要在下游重新从 repo root、当前工作目录或文档文件推导运行环境。
 - 资源路径、图标、shader、截图输出都应走明确服务或 host 接口。不要硬编码从当前工作目录猜路径；手动验证截图不得写回 source tree。
 
 ## 当前情况
 
-- `editor/AGENTS.md` 本身被 `app/Bootstrap/Application.cpp` 的 `HasEditorRepoMarkers()` 用作仓库根定位标记之一。不要重命名、删除或移动它；如果根定位规则变了，同时更新本文。
+- `editor/AGENTS.md` 只是协作说明，不是运行时定位标记。`Application::ResolveRuntimePaths()` 当前用稳定工程标记（根 `CMakeLists.txt`、`editor/resources`、`project`）定位开发 workspace，并填充 `EditorRuntimePaths`。
 - 顶层 `CMakeLists.txt` 默认启用 `XCENGINE_BUILD_XCUI_EDITOR_CORE` 和 `XCENGINE_BUILD_XCUI_EDITOR_APP`。构建 core/app 时必须启用 `XCENGINE_ENABLE_RENDERING_EDITOR_SUPPORT`。
 - `XCEditor` 目标输出名是 `XCEngine.exe`，Debug 产物位于 `build/editor/Debug/XCEngine.exe`。
-- 当前应用没有命令行项目选择流程；`EditorContext` 将项目根固定为 `<repoRoot>/project`，不要沿用旧文档里的 `--project <path>` 说法。
+- 当前应用没有命令行项目选择流程；默认项目根由 `EditorRuntimePaths.projectRoot` 提供，开发 workspace 下通常是 `<workspaceRoot>/project`。不要沿用旧文档里的 `--project <path>` 说法。
 - 当前面板 ID 为 `hierarchy`、`scene`、`game`、`inspector`、`console`、`project`，由 `EditorProductManifest.*` 声明并驱动注册。
 - 当前 `game` panel 是 viewport shell，但 renderer owner 是 placeholder，不是正式 Game runtime。它会显示 `Game view runtime is not implemented`，不要假设 Game view 已完整实现。
 - 当前 command 事实：`file.exit` 已绑定退出；`edit.*` 通过 active route 分发到 hierarchy/project/scene/inspector；`assets.*` 通过 project route 分发；多数 `file.*`、`run.*`、`scripts.*`、`help.about` 仍只是菜单/命令 surface，未拥有完整 host owner。
-- `EditorContext` 是产品级状态聚合点：`EditorSession`、project runtime、scene runtime、selection、command focus、utility window request、shortcut manager 和 host command bridge 都在这里串接。
+- `EditorContext` 是产品级状态聚合点：`EditorSession`、project runtime、scene runtime、selection、command focus、utility window request、shortcut manager 和 host command bridge 都在这里串接；初始化只接收 `EditorRuntimePaths`，不再自行拼接 repo/project/resource 路径。
 - `UIEditorWorkspaceController` 管单窗口 workspace model/session；`EditorWindowSystem` 管多窗口 workspace set。跨窗口 detach、close、update 必须经过 synchronization plan。
 - `EditorWorkspacePanelRuntimeSet` 托管产品面板生命周期。新增 panel 时先改 `EditorProductManifest.*`，再按需要调整 `BuildEditorWorkspaceModel()` 的默认布局和测试；不要再手工在 registry / menu / runtime set / viewport host 多处分别补定义。
 - `EditorSelectionService` 是 hierarchy/project/inspector/scene viewport 之间的选择同步核心。不要在单个 panel 内维护另一套长期选择真相。
@@ -41,6 +42,7 @@
 - `include/XCEditor/Windowing`：多窗口 workspace 状态、同步计划和 presentation policy。
 - `src/**`：对应公共头的实现。保持偏纯函数/状态机风格。
 - `app/Core`：产品级 contracts、session、command focus、selection、panel services、scene/project/viewport/windowing 接口。
+- `app/Core/Environment`：运行时路径契约。bootstrap 负责解析 `EditorRuntimePaths`，core/composition/features/rendering 只消费显式路径。
 - `app/Core/Product`：产品 manifest。这里定义正式 panel 集、route 归属、runtime owner 和 viewport renderer owner。
 - `app/Composition`：装配编辑器 shell。`EditorContext` 拥有 session、project runtime、scene runtime、selection、command bridge；`EditorShellRuntime` 驱动 shell interaction、hosted panels 和 viewport runtime。
 - `app/Features`：产品面板与场景视图工具。
@@ -55,6 +57,7 @@
 wWinMain
 -> RunXCEditor
 -> Application::Initialize / Run
+-> Application::ResolveRuntimePaths
 -> EditorContext::Initialize
 -> BuildEditorApplicationShellAsset
 -> EditorWindowSystem::BootstrapPrimaryWindow
diff --git a/editor/app/Bootstrap/Application.cpp b/editor/app/Bootstrap/Application.cpp
index 455d121e..56224c72 100644
--- a/editor/app/Bootstrap/Application.cpp
+++ b/editor/app/Bootstrap/Application.cpp
@@ -35,11 +35,48 @@ constexpr const wchar_t* kWindowTitle = L"Main Scene * - Main.xx - XCEngine Edit
 constexpr DWORD kBorderlessWindowStyle = WS_POPUP | WS_THICKFRAME;
 constexpr int kDefaultSmokeTestDurationSeconds = 12;
 
-bool HasEditorRepoMarkers(const std::filesystem::path& root) {
-    return std::filesystem::exists(root / "editor" / "AGENTS.md") &&
+bool HasEditorWorkspaceMarkers(const std::filesystem::path& root) {
+    return std::filesystem::exists(root / "CMakeLists.txt") &&
+        std::filesystem::exists(root / "editor" / "resources") &&
         std::filesystem::exists(root / "project");
 }
 
+std::filesystem::path NormalizePath(const std::filesystem::path& path) {
+    std::error_code errorCode = {};
+    std::filesystem::path normalized =
+        std::filesystem::weakly_canonical(path, errorCode);
+    return errorCode
+        ? path.lexically_normal()
+        : normalized.lexically_normal();
+}
+
+App::EditorRuntimePaths BuildEditorRuntimePaths(
+    const std::filesystem::path& workspaceRoot,
+    const std::filesystem::path& executableDirectory) {
+    App::EditorRuntimePaths paths = {};
+    paths.workspaceRoot = NormalizePath(workspaceRoot);
+    paths.executableRoot = NormalizePath(executableDirectory);
+
+    const std::filesystem::path sourceTreeResourceRoot =
+        paths.workspaceRoot / "editor" / "resources";
+    const std::filesystem::path packagedResourceRoot =
+        paths.executableRoot / "resources";
+    paths.resourceRoot = std::filesystem::exists(sourceTreeResourceRoot)
+        ? NormalizePath(sourceTreeResourceRoot)
+        : NormalizePath(packagedResourceRoot);
+
+    const std::filesystem::path sourceTreeProjectRoot =
+        paths.workspaceRoot / "project";
+    const std::filesystem::path packagedProjectRoot =
+        paths.executableRoot / "project";
+    paths.projectRoot = std::filesystem::exists(sourceTreeProjectRoot)
+        ? NormalizePath(sourceTreeProjectRoot)
+        : NormalizePath(packagedProjectRoot);
+
+    paths.captureRoot = NormalizePath(paths.executableRoot / "captures");
+    return paths;
+}
+
 void EnableDpiAwareness() {
     const HMODULE user32 = GetModuleHandleW(L"user32.dll");
     if (user32 != nullptr) {
@@ -118,7 +155,7 @@ namespace XCEngine::UI::Editor {
 bool Application::Initialize(HINSTANCE hInstance, int nCmdShow) {
     m_hInstance = hInstance;
     m_resourceService = std::make_unique<Host::Win32EditorResourceService>(m_hInstance);
-    m_repoRoot = ResolveRepoRootPath(m_resourceService->GetExecutableDirectory());
+    m_runtimePaths = ResolveRuntimePaths(m_resourceService->GetExecutableDirectory());
     EnableDpiAwareness();
 
     const std::filesystem::path logRoot = m_resourceService->GetExecutableDirectory() / "logs";
@@ -126,7 +163,7 @@ bool Application::Initialize(HINSTANCE hInstance, int nCmdShow) {
     SetUnhandledExceptionFilter(&Application::HandleUnhandledException);
     AppendUIEditorRuntimeTrace("app", "initialize begin");
 
-    if (!m_editorContext->Initialize(m_repoRoot)) {
+    if (!m_editorContext->Initialize(m_runtimePaths)) {
         AppendUIEditorRuntimeTrace(
             "app",
             "shell asset validation failed: " + m_editorContext->GetValidationMessage());
@@ -149,8 +186,7 @@ bool Application::Initialize(HINSTANCE hInstance, int nCmdShow) {
     hostConfig.windowUserData = this;
     m_windowHostRuntime = std::make_unique<App::EditorWindowHostRuntime>(
         hostConfig,
-        m_repoRoot,
-        m_editorContext->GetShellAsset().captureRootPath);
+        m_runtimePaths);
     m_renderRuntimeFactory =
         std::make_unique<Host::D3D12EditorWindowRenderRuntimeFactory>();
     App::EditorWorkspaceShellRuntimeFactory workspaceShellRuntimeFactory = []() {
@@ -270,18 +306,13 @@ void Application::Shutdown() {
     ShutdownUIEditorRuntimeTrace();
 }
 
-std::filesystem::path Application::ResolveRepoRootPath(
+App::EditorRuntimePaths Application::ResolveRuntimePaths(
     const std::filesystem::path& executableDirectory) {
-    std::error_code errorCode = {};
-    std::filesystem::path current =
-        std::filesystem::weakly_canonical(executableDirectory, errorCode);
-    if (errorCode) {
-        current = executableDirectory.lexically_normal();
-    }
+    std::filesystem::path current = NormalizePath(executableDirectory);
 
     while (!current.empty()) {
-        if (HasEditorRepoMarkers(current)) {
-            return current.lexically_normal();
+        if (HasEditorWorkspaceMarkers(current)) {
+            return BuildEditorRuntimePaths(current, executableDirectory);
         }
 
         const std::filesystem::path parent = current.parent_path();
@@ -291,7 +322,7 @@ std::filesystem::path Application::ResolveRepoRootPath(
         current = parent;
     }
 
-    return executableDirectory.lexically_normal();
+    return BuildEditorRuntimePaths(executableDirectory, executableDirectory);
 }
 
 LONG WINAPI Application::HandleUnhandledException(EXCEPTION_POINTERS* exceptionInfo) {
diff --git a/editor/app/Bootstrap/Application.h b/editor/app/Bootstrap/Application.h
index 0ff5a025..fee9bad1 100644
--- a/editor/app/Bootstrap/Application.h
+++ b/editor/app/Bootstrap/Application.h
@@ -6,6 +6,8 @@
 
 #include <windows.h>
 
+#include "Environment/EditorRuntimePaths.h"
+
 #include <chrono>
 #include <filesystem>
 #include <memory>
@@ -49,13 +51,13 @@ private:
     bool Initialize(HINSTANCE hInstance, int nCmdShow);
     void Shutdown();
     bool RegisterWindowClass();
-    static std::filesystem::path ResolveRepoRootPath(
+    static App::EditorRuntimePaths ResolveRuntimePaths(
         const std::filesystem::path& executableDirectory);
     static LONG WINAPI HandleUnhandledException(EXCEPTION_POINTERS* exceptionInfo);
 
     HINSTANCE m_hInstance = nullptr;
     ATOM m_windowClassAtom = 0;
-    std::filesystem::path m_repoRoot = {};
+    App::EditorRuntimePaths m_runtimePaths = {};
     std::chrono::steady_clock::time_point m_smokeTestStartTime = {};
     std::chrono::milliseconds m_smokeTestDuration = std::chrono::milliseconds::zero();
     std::unique_ptr<App::EditorContext> m_editorContext = {};
diff --git a/editor/app/Composition/EditorContext.cpp b/editor/app/Composition/EditorContext.cpp
index 17badee7..1f266a92 100644
--- a/editor/app/Composition/EditorContext.cpp
+++ b/editor/app/Composition/EditorContext.cpp
@@ -52,9 +52,9 @@ UIEditorWorkspacePanelPresentationModel* FindMutablePresentation(
 
 } // namespace
 
-bool EditorContext::Initialize(const std::filesystem::path& repoRoot) {
+bool EditorContext::Initialize(const EditorRuntimePaths& runtimePaths) {
     AppendUIEditorRuntimeTrace("startup", "EditorContext::Initialize begin");
-    m_shellAsset = BuildEditorApplicationShellAsset(repoRoot);
+    m_shellAsset = BuildEditorApplicationShellAsset(runtimePaths);
     AppendUIEditorRuntimeTrace("startup", "BuildEditorApplicationShellAsset complete");
     m_shellValidation = ValidateEditorShellAsset(m_shellAsset);
     AppendUIEditorRuntimeTrace(
@@ -66,13 +66,13 @@ bool EditorContext::Initialize(const std::filesystem::path& repoRoot) {
     }
 
     m_session = {};
-    m_session.repoRoot = repoRoot;
-    m_session.projectRoot = (repoRoot / "project").lexically_normal();
+    m_session.workspaceRoot = runtimePaths.workspaceRoot;
+    m_session.projectRoot = runtimePaths.projectRoot;
     m_commandFocusService = {};
     m_selectionService = {};
     m_projectRuntime.Reset();
     AppendUIEditorRuntimeTrace("startup", "EditorProjectRuntime::Initialize begin");
-    m_projectRuntime.Initialize(repoRoot);
+    m_projectRuntime.Initialize(runtimePaths.projectRoot);
     AppendUIEditorRuntimeTrace("startup", "EditorProjectRuntime::Initialize end");
     m_projectRuntime.BindSelectionService(&m_selectionService);
     m_sceneRuntime.Reset();
diff --git a/editor/app/Composition/EditorContext.h b/editor/app/Composition/EditorContext.h
index 822ef82b..7fa2900e 100644
--- a/editor/app/Composition/EditorContext.h
+++ b/editor/app/Composition/EditorContext.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "Panels/EditorPanelServices.h"
+#include "Environment/EditorRuntimePaths.h"
 #include "Windowing/EditorFrameServices.h"
 #include "Scene/EditorSceneRuntime.h"
 #include "Project/EditorProjectRuntime.h"
@@ -33,7 +34,7 @@ class EditorEditCommandRoute;
 
 class EditorContext : public EditorFrameServices {
 public:
-    bool Initialize(const std::filesystem::path& repoRoot);
+    bool Initialize(const EditorRuntimePaths& runtimePaths);
     void AttachTextMeasurer(const UIEditorTextMeasurer& textMeasurer) override;
     void SetSystemInteractionHost(System::SystemInteractionService* systemInteractionHost);
     void BindEditCommandRoutes(
diff --git a/editor/app/Composition/EditorShellAssetBuilder.cpp b/editor/app/Composition/EditorShellAssetBuilder.cpp
index d017a796..17e58042 100644
--- a/editor/app/Composition/EditorShellAssetBuilder.cpp
+++ b/editor/app/Composition/EditorShellAssetBuilder.cpp
@@ -510,10 +510,10 @@ UIEditorMenuModel BuildEditorMenuModel() {
 namespace XCEngine::UI::Editor::App {
 
 
-EditorShellAsset BuildEditorApplicationShellAsset(const std::filesystem::path& repoRoot) {
+EditorShellAsset BuildEditorApplicationShellAsset(const EditorRuntimePaths& runtimePaths) {
     EditorShellAsset asset = {};
     asset.screenId = "editor.shell";
-    asset.captureRootPath = (repoRoot / "editor/captures").lexically_normal();
+    asset.captureRootPath = runtimePaths.captureRoot.lexically_normal();
     asset.panelRegistry = BuildEditorPanelRegistry();
     asset.workspace = BuildEditorWorkspaceModel(asset.panelRegistry);
     asset.workspaceSession =
diff --git a/editor/app/Composition/EditorShellAssetBuilder.h b/editor/app/Composition/EditorShellAssetBuilder.h
index 0a9bddb4..83b52436 100644
--- a/editor/app/Composition/EditorShellAssetBuilder.h
+++ b/editor/app/Composition/EditorShellAssetBuilder.h
@@ -1,16 +1,16 @@
 #pragma once
 
+#include "Environment/EditorRuntimePaths.h"
 #include "Windowing/EditorShellVariant.h"
 
 #include <XCEditor/Shell/UIEditorShellAsset.h>
 #include <XCEditor/Workspace/UIEditorWorkspaceController.h>
 
-#include <filesystem>
 #include <string_view>
 
 namespace XCEngine::UI::Editor::App {
 
-EditorShellAsset BuildEditorApplicationShellAsset(const std::filesystem::path& repoRoot);
+EditorShellAsset BuildEditorApplicationShellAsset(const EditorRuntimePaths& runtimePaths);
 
 UIEditorShellInteractionDefinition BuildEditorApplicationShellInteractionDefinition(
     const EditorShellAsset& asset,
diff --git a/editor/app/Composition/EditorShellRuntime.cpp b/editor/app/Composition/EditorShellRuntime.cpp
index e6e9c597..4fa91d01 100644
--- a/editor/app/Composition/EditorShellRuntime.cpp
+++ b/editor/app/Composition/EditorShellRuntime.cpp
@@ -18,7 +18,7 @@ EditorShellRuntime::EditorShellRuntime(
     , m_workspacePanels(std::move(workspacePanels)) {}
 
 void EditorShellRuntime::Initialize(
-    const std::filesystem::path& repoRoot,
+    const EditorRuntimePaths& runtimePaths,
     Rendering::Host::UiTextureHost& textureHost,
     Host::EditorHostResourceService& resourceService,
     UIEditorTextMeasurer& textMeasurer) {
@@ -29,10 +29,10 @@ void EditorShellRuntime::Initialize(
     }
 
     m_iconService->Initialize(textureHost, resourceService);
-    m_viewportRuntimeServices->Initialize(repoRoot);
+    m_viewportRuntimeServices->Initialize(runtimePaths);
     m_workspacePanels.Initialize(
         EditorWorkspacePanelInitializationContext{
-            .repoRoot = repoRoot,
+            .runtimePaths = runtimePaths,
             .textMeasurer = textMeasurer,
             .iconService = *m_iconService,
             .sceneViewportRuntime = &m_viewportRuntimeServices->GetSceneViewportRuntime(),
diff --git a/editor/app/Composition/EditorShellRuntime.h b/editor/app/Composition/EditorShellRuntime.h
index 48d8c67a..6649e46e 100644
--- a/editor/app/Composition/EditorShellRuntime.h
+++ b/editor/app/Composition/EditorShellRuntime.h
@@ -51,7 +51,7 @@ public:
         std::unique_ptr<EditorViewportRuntimeServices> viewportRuntimeServices);
 
     void Initialize(
-        const std::filesystem::path& repoRoot,
+        const EditorRuntimePaths& runtimePaths,
         Rendering::Host::UiTextureHost& textureHost,
         Host::EditorHostResourceService& resourceService,
         UIEditorTextMeasurer& textMeasurer) override;
diff --git a/editor/app/Core/Environment/EditorRuntimePaths.h b/editor/app/Core/Environment/EditorRuntimePaths.h
new file mode 100644
index 00000000..5e5cf875
--- /dev/null
+++ b/editor/app/Core/Environment/EditorRuntimePaths.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <filesystem>
+
+namespace XCEngine::UI::Editor::App {
+
+struct EditorRuntimePaths {
+    std::filesystem::path workspaceRoot = {};
+    std::filesystem::path executableRoot = {};
+    std::filesystem::path resourceRoot = {};
+    std::filesystem::path projectRoot = {};
+    std::filesystem::path captureRoot = {};
+
+    [[nodiscard]] bool IsComplete() const {
+        return !workspaceRoot.empty() &&
+            !executableRoot.empty() &&
+            !resourceRoot.empty() &&
+            !projectRoot.empty() &&
+            !captureRoot.empty();
+    }
+};
+
+} // namespace XCEngine::UI::Editor::App
diff --git a/editor/app/Core/State/EditorSession.h b/editor/app/Core/State/EditorSession.h
index 75a11b24..e1ca2003 100644
--- a/editor/app/Core/State/EditorSession.h
+++ b/editor/app/Core/State/EditorSession.h
@@ -51,7 +51,7 @@ struct EditorConsoleEntry {
 };
 
 struct EditorSession {
-    std::filesystem::path repoRoot = {};
+    std::filesystem::path workspaceRoot = {};
     std::filesystem::path projectRoot = {};
     std::string activePanelId = {};
     EditorRuntimeMode runtimeMode = EditorRuntimeMode::Edit;
diff --git a/editor/app/Core/Viewport/EditorViewportRuntimeServices.h b/editor/app/Core/Viewport/EditorViewportRuntimeServices.h
index b1f1e579..34ffa21e 100644
--- a/editor/app/Core/Viewport/EditorViewportRuntimeServices.h
+++ b/editor/app/Core/Viewport/EditorViewportRuntimeServices.h
@@ -1,10 +1,9 @@
 #pragma once
 
 #include "Scene/SceneViewportRenderRequest.h"
+#include "Environment/EditorRuntimePaths.h"
 #include "Viewport/EditorViewportPicking.h"
 #include "Viewport/EditorViewportTypes.h"
-
-#include <filesystem>
 #include <string_view>
 
 namespace XCEngine::Rendering {
@@ -33,7 +32,7 @@ class EditorViewportRuntimeServices {
 public:
     virtual ~EditorViewportRuntimeServices() = default;
 
-    virtual void Initialize(const std::filesystem::path& repoRoot) = 0;
+    virtual void Initialize(const EditorRuntimePaths& runtimePaths) = 0;
     virtual void Shutdown() = 0;
     virtual void AttachWindowRenderer(Rendering::Host::ViewportRenderHost& windowRenderer) = 0;
     virtual void DetachWindowRenderer() = 0;
diff --git a/editor/app/Core/Windowing/EditorWorkspaceShellRuntime.h b/editor/app/Core/Windowing/EditorWorkspaceShellRuntime.h
index 4cf6a923..2e08aa1a 100644
--- a/editor/app/Core/Windowing/EditorWorkspaceShellRuntime.h
+++ b/editor/app/Core/Windowing/EditorWorkspaceShellRuntime.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include "Environment/EditorRuntimePaths.h"
 #include "Windowing/EditorFrameServices.h"
 
 #include <XCEditor/Docking/UIEditorDockHostTransfer.h>
@@ -7,7 +8,6 @@
 #include <XCEngine/UI/Types.h>
 
 #include <cstdint>
-#include <filesystem>
 #include <functional>
 #include <memory>
 #include <string>
@@ -52,7 +52,7 @@ public:
     virtual ~EditorWorkspaceShellRuntime() = default;
 
     virtual void Initialize(
-        const std::filesystem::path& repoRoot,
+        const EditorRuntimePaths& runtimePaths,
         Rendering::Host::UiTextureHost& textureHost,
         Host::EditorHostResourceService& resourceService,
         UIEditorTextMeasurer& textMeasurer) = 0;
diff --git a/editor/app/Core/WorkspacePanels/EditorWorkspacePanelRuntime.h b/editor/app/Core/WorkspacePanels/EditorWorkspacePanelRuntime.h
index 0c8c4acc..e77bdeb6 100644
--- a/editor/app/Core/WorkspacePanels/EditorWorkspacePanelRuntime.h
+++ b/editor/app/Core/WorkspacePanels/EditorWorkspacePanelRuntime.h
@@ -2,6 +2,7 @@
 
 #include "Assets/EditorIconService.h"
 #include "Commands/EditorEditCommandRoute.h"
+#include "Environment/EditorRuntimePaths.h"
 #include "State/EditorSession.h"
 #include "Panels/EditorPanelServices.h"
 #include "Viewport/EditorViewportRuntimeServices.h"
@@ -14,7 +15,6 @@
 #include <XCEngine/UI/DrawData.h>
 
 #include <cstdint>
-#include <filesystem>
 #include <functional>
 #include <memory>
 #include <string>
@@ -46,7 +46,7 @@ struct EditorWorkspacePanelFrameEvent {
 };
 
 struct EditorWorkspacePanelInitializationContext {
-    const std::filesystem::path& repoRoot;
+    const EditorRuntimePaths& runtimePaths;
     UIEditorTextMeasurer& textMeasurer;
     EditorIconService& iconService;
     EditorSceneViewportRuntime* sceneViewportRuntime = nullptr;
diff --git a/editor/app/Features/Project/ProjectPanel.cpp b/editor/app/Features/Project/ProjectPanel.cpp
index 0c621b1d..7ecb302b 100644
--- a/editor/app/Features/Project/ProjectPanel.cpp
+++ b/editor/app/Features/Project/ProjectPanel.cpp
@@ -400,9 +400,9 @@ ProjectPanel::GetPresentedWindowTreeExpansionModel() const {
     return ResolveUIEditorFilterableTreeHostExpansionModel(m_treeFilterHostFrame);
 }
 
-void ProjectPanel::Initialize(const std::filesystem::path& repoRoot) {
+void ProjectPanel::Initialize(const std::filesystem::path& projectRoot) {
     m_ownedProjectRuntime = std::make_unique<EditorProjectRuntime>();
-    m_ownedProjectRuntime->Initialize(repoRoot);
+    m_ownedProjectRuntime->Initialize(projectRoot);
     SyncSelectionsFromRuntime();
 }
 
diff --git a/editor/app/Features/Project/ProjectPanel.h b/editor/app/Features/Project/ProjectPanel.h
index 3014b6a5..1b47ae8f 100644
--- a/editor/app/Features/Project/ProjectPanel.h
+++ b/editor/app/Features/Project/ProjectPanel.h
@@ -82,7 +82,7 @@ public:
         bool directory = false;
     };
 
-    void Initialize(const std::filesystem::path& repoRoot);
+    void Initialize(const std::filesystem::path& projectRoot);
     void SetProjectRuntime(EditorProjectRuntime* projectRuntime);
     void SetCommandFocusService(EditorCommandFocusService* commandFocusService);
     void SetSystemInteractionHost(System::SystemInteractionService* systemInteractionHost);
diff --git a/editor/app/Host/Interfaces/EditorWindowHostInterfaces.h b/editor/app/Host/Interfaces/EditorWindowHostInterfaces.h
index 6892e552..7198c39f 100644
--- a/editor/app/Host/Interfaces/EditorWindowHostInterfaces.h
+++ b/editor/app/Host/Interfaces/EditorWindowHostInterfaces.h
@@ -3,6 +3,7 @@
 #include "EditorWindowHostTypes.h"
 #include "EditorWindowPointerCapture.h"
 #include "EditorWindowRenderRuntime.h"
+#include "Environment/EditorRuntimePaths.h"
 #include "Windowing/EditorWindowGeometry.h"
 #include "Windowing/EditorWindowTransferRequests.h"
 #include "Windowing/EditorWindowTypes.h"
@@ -12,7 +13,6 @@
 #include <XCEditor/Windowing/Presentation/EditorWorkspaceWindowProjection.h>
 #include <XCEngine/UI/Types.h>
 
-#include <filesystem>
 #include <cstdint>
 #include <memory>
 #include <optional>
@@ -40,8 +40,7 @@ class EditorWindowInputFeedbackBinding;
 class EditorWindowTitleBarBinding;
 
 struct EditorHostWindowRuntimeInitializationParams {
-    std::filesystem::path repoRoot = {};
-    std::filesystem::path captureRoot = {};
+    EditorRuntimePaths runtimePaths = {};
     bool autoCaptureOnStartup = false;
 };
 
diff --git a/editor/app/Host/Win32/Windowing/EditorWindowHostRuntime.cpp b/editor/app/Host/Win32/Windowing/EditorWindowHostRuntime.cpp
index 032ebb73..55a4bc38 100644
--- a/editor/app/Host/Win32/Windowing/EditorWindowHostRuntime.cpp
+++ b/editor/app/Host/Win32/Windowing/EditorWindowHostRuntime.cpp
@@ -63,11 +63,9 @@ DWORD ResolveExtendedWindowStyle(const EditorWindowNativeHostPolicy& policy) {
 
 EditorWindowHostRuntime::EditorWindowHostRuntime(
     EditorWindowHostConfig hostConfig,
-    std::filesystem::path repoRoot,
-    std::filesystem::path captureRoot)
+    EditorRuntimePaths runtimePaths)
     : m_hostConfig(hostConfig),
-      m_repoRoot(std::move(repoRoot)),
-      m_captureRoot(std::move(captureRoot)) {}
+      m_runtimePaths(std::move(runtimePaths)) {}
 
 EditorWindowHostRuntime::~EditorWindowHostRuntime() = default;
 
@@ -176,8 +174,7 @@ bool EditorWindowHostRuntime::CreateHostWindow(
     if (!m_hostCoordinator->InitializeHostWindow(
             window,
             EditorHostWindowRuntimeInitializationParams{
-                .repoRoot = m_repoRoot,
-                .captureRoot = m_captureRoot,
+                .runtimePaths = m_runtimePaths,
                 .autoCaptureOnStartup = params.autoCaptureOnStartup,
             })) {
         return failWindowInitialization("managed window initialization failed");
diff --git a/editor/app/Host/Win32/Windowing/EditorWindowHostRuntime.h b/editor/app/Host/Win32/Windowing/EditorWindowHostRuntime.h
index e00c3756..13b0c4d8 100644
--- a/editor/app/Host/Win32/Windowing/EditorWindowHostRuntime.h
+++ b/editor/app/Host/Win32/Windowing/EditorWindowHostRuntime.h
@@ -17,8 +17,7 @@ class EditorWindowHostRuntime final : public EditorWindowHostRuntimeServices {
 public:
     EditorWindowHostRuntime(
         EditorWindowHostConfig hostConfig,
-        std::filesystem::path repoRoot,
-        std::filesystem::path captureRoot);
+        EditorRuntimePaths runtimePaths);
     ~EditorWindowHostRuntime();
 
     bool CreateHostWindow(
@@ -54,8 +53,8 @@ public:
         return m_hostConfig;
     }
 
-    const std::filesystem::path& GetRepoRoot() const {
-        return m_repoRoot;
+    const EditorRuntimePaths& GetRuntimePaths() const {
+        return m_runtimePaths;
     }
 
     std::vector<std::unique_ptr<EditorWindow>>& GetWindowStorage() {
@@ -73,8 +72,7 @@ private:
     const EditorWindow* FindWindowByIdImpl(std::string_view windowId) const;
 
     EditorWindowHostConfig m_hostConfig = {};
-    std::filesystem::path m_repoRoot = {};
-    std::filesystem::path m_captureRoot = {};
+    EditorRuntimePaths m_runtimePaths = {};
     std::vector<std::unique_ptr<EditorWindow>> m_windows = {};
     EditorWindow* m_pendingCreateWindow = nullptr;
     EditorWindowHostCoordinator* m_hostCoordinator = nullptr;
diff --git a/editor/app/Rendering/Viewport/SceneViewportResourcePaths.h b/editor/app/Rendering/Viewport/SceneViewportResourcePaths.h
index 5c82bec9..f9579d45 100644
--- a/editor/app/Rendering/Viewport/SceneViewportResourcePaths.h
+++ b/editor/app/Rendering/Viewport/SceneViewportResourcePaths.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include "Environment/EditorRuntimePaths.h"
+
 #include <XCEngine/Core/Containers/String.h>
 
 #include <filesystem>
@@ -25,8 +27,8 @@ inline ::XCEngine::Containers::String NormalizeSceneViewportResourcePath(
 }
 
 inline std::filesystem::path GetSceneViewportResourceRootPath(
-    const std::filesystem::path& repoRoot) {
-    return (repoRoot / "editor" / "resources").lexically_normal();
+    const EditorRuntimePaths& runtimePaths) {
+    return runtimePaths.resourceRoot.lexically_normal();
 }
 
 inline ::XCEngine::Containers::String BuildSceneViewportResourcePath(
@@ -37,9 +39,9 @@ inline ::XCEngine::Containers::String BuildSceneViewportResourcePath(
 }
 
 inline SceneViewportShaderPaths BuildSceneViewportShaderPaths(
-    const std::filesystem::path& repoRoot) {
+    const EditorRuntimePaths& runtimePaths) {
     const std::filesystem::path resourceRoot =
-        GetSceneViewportResourceRootPath(repoRoot);
+        GetSceneViewportResourceRootPath(runtimePaths);
 
     SceneViewportShaderPaths paths = {};
     paths.infiniteGridShaderPath = BuildSceneViewportResourcePath(
diff --git a/editor/app/Rendering/Viewport/ViewportHostService.cpp b/editor/app/Rendering/Viewport/ViewportHostService.cpp
index 07ecbd4b..a9a69ffd 100644
--- a/editor/app/Rendering/Viewport/ViewportHostService.cpp
+++ b/editor/app/Rendering/Viewport/ViewportHostService.cpp
@@ -45,8 +45,8 @@ ViewportHostService::ViewportHostService() = default;
 
 ViewportHostService::~ViewportHostService() = default;
 
-void ViewportHostService::Initialize(const std::filesystem::path& repoRoot) {
-    m_sceneViewportRuntime.Initialize(BuildSceneViewportShaderPaths(repoRoot));
+void ViewportHostService::Initialize(const EditorRuntimePaths& runtimePaths) {
+    m_sceneViewportRuntime.Initialize(BuildSceneViewportShaderPaths(runtimePaths));
     m_placeholderRenderers.clear();
     for (const EditorProductPanelDescriptor& panel : GetEditorProductPanels()) {
         if (panel.presentationKind != UIEditorPanelPresentationKind::ViewportShell) {
diff --git a/editor/app/Rendering/Viewport/ViewportHostService.h b/editor/app/Rendering/Viewport/ViewportHostService.h
index 6197dd72..305e0e40 100644
--- a/editor/app/Rendering/Viewport/ViewportHostService.h
+++ b/editor/app/Rendering/Viewport/ViewportHostService.h
@@ -23,7 +23,7 @@ public:
     ViewportHostService();
     ~ViewportHostService();
 
-    void Initialize(const std::filesystem::path& repoRoot) override;
+    void Initialize(const EditorRuntimePaths& runtimePaths) override;
     void Shutdown() override;
     void AttachWindowRenderer(Rendering::Host::ViewportRenderHost& windowRenderer) override;
     void DetachWindowRenderer() override;
diff --git a/editor/app/Services/Project/EditorProjectRuntime.cpp b/editor/app/Services/Project/EditorProjectRuntime.cpp
index 9b324647..a37336b4 100644
--- a/editor/app/Services/Project/EditorProjectRuntime.cpp
+++ b/editor/app/Services/Project/EditorProjectRuntime.cpp
@@ -84,9 +84,9 @@ void EditorProjectRuntime::Reset() {
     m_pendingSceneOpenPath.reset();
 }
 
-bool EditorProjectRuntime::Initialize(const std::filesystem::path& repoRoot) {
+bool EditorProjectRuntime::Initialize(const std::filesystem::path& projectRoot) {
     Reset();
-    m_browserModel.Initialize(repoRoot);
+    m_browserModel.Initialize(projectRoot);
     return true;
 }
 
diff --git a/editor/app/Services/Project/EditorProjectRuntime.h b/editor/app/Services/Project/EditorProjectRuntime.h
index 46358e1d..ed2cc192 100644
--- a/editor/app/Services/Project/EditorProjectRuntime.h
+++ b/editor/app/Services/Project/EditorProjectRuntime.h
@@ -45,7 +45,7 @@ public:
     };
 
     void Reset();
-    bool Initialize(const std::filesystem::path& repoRoot);
+    bool Initialize(const std::filesystem::path& projectRoot);
     void BindSelectionService(EditorSelectionService* selectionService);
     void Refresh();
 
diff --git a/editor/app/Services/Project/ProjectBrowserModel.cpp b/editor/app/Services/Project/ProjectBrowserModel.cpp
index 526fe2ef..4eed9bf3 100644
--- a/editor/app/Services/Project/ProjectBrowserModel.cpp
+++ b/editor/app/Services/Project/ProjectBrowserModel.cpp
@@ -545,9 +545,9 @@ void ProjectBrowserModel::Reset() {
     m_currentFolderId.clear();
 }
 
-void ProjectBrowserModel::Initialize(const std::filesystem::path& repoRoot) {
+void ProjectBrowserModel::Initialize(const std::filesystem::path& projectRoot) {
     Reset();
-    m_assetsRootPath = (repoRoot / "project/Assets").lexically_normal();
+    m_assetsRootPath = (projectRoot / "Assets").lexically_normal();
     TraceProjectBrowser("ProjectBrowserModel::Initialize assetsRoot=" + PathToUtf8String(m_assetsRootPath));
     std::error_code errorCode = {};
     if (!std::filesystem::exists(m_assetsRootPath, errorCode)) {
diff --git a/editor/app/Services/Project/ProjectBrowserModel.h b/editor/app/Services/Project/ProjectBrowserModel.h
index 696a6a45..3f4699bd 100644
--- a/editor/app/Services/Project/ProjectBrowserModel.h
+++ b/editor/app/Services/Project/ProjectBrowserModel.h
@@ -54,7 +54,7 @@ public:
     ProjectBrowserModel& operator=(ProjectBrowserModel&&) noexcept = default;
 
     void Reset();
-    void Initialize(const std::filesystem::path& repoRoot);
+    void Initialize(const std::filesystem::path& projectRoot);
     void Refresh();
 
     bool Empty() const;
diff --git a/editor/app/Windowing/Content/EditorWindowContentController.h b/editor/app/Windowing/Content/EditorWindowContentController.h
index 7d77f889..df3254fd 100644
--- a/editor/app/Windowing/Content/EditorWindowContentController.h
+++ b/editor/app/Windowing/Content/EditorWindowContentController.h
@@ -1,12 +1,12 @@
 #pragma once
 
+#include "Environment/EditorRuntimePaths.h"
 #include "Windowing/EditorWindowTransferRequests.h"
 #include "Windowing/EditorFrameServices.h"
 #include "EditorWindowContentBindings.h"
 
 #include <XCEditor/Foundation/UIEditorTextMeasurement.h>
 
-#include <filesystem>
 #include <optional>
 #include <string>
 #include <string_view>
@@ -61,7 +61,7 @@ struct EditorWindowContentCapabilities {
 };
 
 struct EditorWindowContentInitializationContext {
-    const std::filesystem::path& repoRoot;
+    const EditorRuntimePaths& runtimePaths;
     EditorFrameServices& frameServices;
     Rendering::Host::UiTextureHost& textureHost;
     Host::EditorHostResourceService& resourceService;
diff --git a/editor/app/Windowing/Content/EditorWorkspaceWindowContentController.cpp b/editor/app/Windowing/Content/EditorWorkspaceWindowContentController.cpp
index 55b85260..e4fdfab5 100644
--- a/editor/app/Windowing/Content/EditorWorkspaceWindowContentController.cpp
+++ b/editor/app/Windowing/Content/EditorWorkspaceWindowContentController.cpp
@@ -115,7 +115,7 @@ void EditorWorkspaceWindowContentController::Initialize(
         return;
     }
     m_shellRuntime->Initialize(
-        context.repoRoot,
+        context.runtimePaths,
         context.textureHost,
         context.resourceService,
         context.textMeasurer);
diff --git a/editor/app/Windowing/EditorWindowInstance.cpp b/editor/app/Windowing/EditorWindowInstance.cpp
index e99e071c..00103ae8 100644
--- a/editor/app/Windowing/EditorWindowInstance.cpp
+++ b/editor/app/Windowing/EditorWindowInstance.cpp
@@ -313,8 +313,7 @@ bool EditorWindowInstance::InitializeRuntime(
             .widthPixels = runtimeSurface.widthPixels,
             .heightPixels = runtimeSurface.heightPixels,
         },
-        params.repoRoot,
-        params.captureRoot,
+        params.runtimePaths,
         params.autoCaptureOnStartup);
     if (initialized) {
         MarkRunning();
diff --git a/editor/app/Windowing/Runtime/EditorWindowRuntimeController.cpp b/editor/app/Windowing/Runtime/EditorWindowRuntimeController.cpp
index e6a0d4d6..31256187 100644
--- a/editor/app/Windowing/Runtime/EditorWindowRuntimeController.cpp
+++ b/editor/app/Windowing/Runtime/EditorWindowRuntimeController.cpp
@@ -142,8 +142,7 @@ const ::XCEngine::UI::UITextureHandle& EditorWindowRuntimeController::GetTitleBa
 
 bool EditorWindowRuntimeController::Initialize(
     const Rendering::Host::EditorWindowRenderRuntimeInitializeParams& renderParams,
-    const std::filesystem::path& repoRoot,
-    const std::filesystem::path& captureRoot,
+    const EditorRuntimePaths& runtimePaths,
     bool autoCaptureOnStartup) {
     if (m_renderRuntime == nullptr) {
         LogRuntimeTrace("app", "window initialize failed: render runtime is null");
@@ -167,7 +166,7 @@ bool EditorWindowRuntimeController::Initialize(
         m_frameServices,
         m_renderRuntime->GetTextMeasurer());
     m_contentController->Initialize(EditorWindowContentInitializationContext{
-        .repoRoot = repoRoot,
+        .runtimePaths = runtimePaths,
         .frameServices = m_frameServices,
         .textureHost = m_renderRuntime->GetTextureHost(),
         .resourceService = m_resourceService,
@@ -200,7 +199,7 @@ bool EditorWindowRuntimeController::Initialize(
     m_ready = true;
 
     m_screenshotController.Initialize(
-        captureRoot,
+        runtimePaths.captureRoot,
         m_resourceService.GetExecutableDirectory());
     if (autoCaptureOnStartup) {
         m_screenshotController.RequestCapture("startup");
diff --git a/editor/app/Windowing/Runtime/EditorWindowRuntimeController.h b/editor/app/Windowing/Runtime/EditorWindowRuntimeController.h
index 74e87082..0395ed8e 100644
--- a/editor/app/Windowing/Runtime/EditorWindowRuntimeController.h
+++ b/editor/app/Windowing/Runtime/EditorWindowRuntimeController.h
@@ -5,6 +5,7 @@
 #endif
 
 #include "Content/EditorWindowContentController.h"
+#include "Environment/EditorRuntimePaths.h"
 #include "Runtime/EditorWindowScreenshotController.h"
 #include "Windowing/EditorFrameServices.h"
 
@@ -14,7 +15,6 @@
 
 #include <chrono>
 #include <cstdint>
-#include <filesystem>
 #include <memory>
 #include <optional>
 #include <string>
@@ -69,8 +69,7 @@ public:
 
     bool Initialize(
         const Rendering::Host::EditorWindowRenderRuntimeInitializeParams& renderParams,
-        const std::filesystem::path& repoRoot,
-        const std::filesystem::path& captureRoot,
+        const EditorRuntimePaths& runtimePaths,
         bool autoCaptureOnStartup);
     void Shutdown();
     void ResetInteractionState();
diff --git a/editor/app/Windowing/Runtime/EditorWindowScreenshotController.cpp b/editor/app/Windowing/Runtime/EditorWindowScreenshotController.cpp
index ae96c896..0cddf9c3 100644
--- a/editor/app/Windowing/Runtime/EditorWindowScreenshotController.cpp
+++ b/editor/app/Windowing/Runtime/EditorWindowScreenshotController.cpp
@@ -12,13 +12,11 @@ namespace {
 std::filesystem::path ResolveBuildCaptureRoot(
     const std::filesystem::path& requestedCaptureRoot,
     const std::filesystem::path& executableDirectory) {
-    std::filesystem::path captureRoot = executableDirectory / "captures";
-    const std::filesystem::path scenarioPath = requestedCaptureRoot.parent_path().filename();
-    if (!scenarioPath.empty() && scenarioPath != "captures") {
-        captureRoot /= scenarioPath;
+    if (!requestedCaptureRoot.empty()) {
+        return requestedCaptureRoot.lexically_normal();
     }
 
-    return captureRoot.lexically_normal();
+    return (executableDirectory / "captures").lexically_normal();
 }
 
 } // namespace
diff --git a/tests/UI/Editor/unit/test_editor_project_runtime.cpp b/tests/UI/Editor/unit/test_editor_project_runtime.cpp
index fd01840d..77a59b26 100644
--- a/tests/UI/Editor/unit/test_editor_project_runtime.cpp
+++ b/tests/UI/Editor/unit/test_editor_project_runtime.cpp
@@ -65,7 +65,7 @@ TEST(EditorProjectRuntimeTests, NavigateToFolderClearsCurrentProjectSelection) {
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scenes/Main.xc"));
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
     ASSERT_TRUE(runtime.NavigateToFolder("Assets/Scenes"));
     ASSERT_TRUE(runtime.SetSelection("Assets/Scenes/Main.xc"));
 
@@ -80,7 +80,7 @@ TEST(EditorProjectRuntimeTests, OpenSceneItemQueuesSceneOpenRequest) {
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scenes/Main.xc"));
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
     ASSERT_TRUE(runtime.NavigateToFolder("Assets/Scenes"));
 
     ASSERT_TRUE(runtime.OpenItem("Assets/Scenes/Main.xc"));
@@ -97,7 +97,7 @@ TEST(EditorProjectRuntimeTests, ResolveCommandTargetsFollowRuntimeSelectionAndCu
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scenes/Main.xc"));
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
     ASSERT_TRUE(runtime.NavigateToFolder("Assets/Scenes"));
     ASSERT_TRUE(runtime.SetSelection("Assets/Scenes/Main.xc"));
 
@@ -134,7 +134,7 @@ TEST(EditorProjectRuntimeTests, ResolveEditCommandTargetMarksAssetsRootAndIgnore
     TemporaryRepo repo = {};
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
 
     const std::optional<EditorProjectRuntime::EditCommandTarget> rootTarget =
         runtime.ResolveEditCommandTarget();
@@ -153,7 +153,7 @@ TEST(EditorProjectRuntimeTests, RenameSelectedItemRemapsSelectionAndDeleteClears
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scripts/Player.cs.meta"));
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
     ASSERT_TRUE(runtime.NavigateToFolder("Assets/Scripts"));
     ASSERT_TRUE(runtime.SetSelection("Assets/Scripts/Player.cs"));
 
@@ -176,7 +176,7 @@ TEST(EditorProjectRuntimeTests, BoundSelectionServiceBecomesTheSingleProjectSele
 
     EditorSelectionService selectionService = {};
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
     runtime.BindSelectionService(&selectionService);
     ASSERT_TRUE(runtime.NavigateToFolder("Assets/Scripts"));
 
diff --git a/tests/UI/Editor/unit/test_editor_shell_asset_validation.cpp b/tests/UI/Editor/unit/test_editor_shell_asset_validation.cpp
index 9852f9eb..41c343f9 100644
--- a/tests/UI/Editor/unit/test_editor_shell_asset_validation.cpp
+++ b/tests/UI/Editor/unit/test_editor_shell_asset_validation.cpp
@@ -15,6 +15,7 @@ using XCEngine::UI::Editor::App::BuildEditorApplicationShellAsset;
 using XCEngine::UI::Editor::App::EditorProductManifestValidationCode;
 using XCEngine::UI::Editor::App::EditorProductPanelRuntimeKind;
 using XCEngine::UI::Editor::App::EditorProductViewportRendererKind;
+using XCEngine::UI::Editor::App::EditorRuntimePaths;
 using XCEngine::UI::Editor::App::FindEditorProductPanel;
 using XCEngine::UI::Editor::App::GetEditorProductPanels;
 using XCEngine::UI::Editor::App::kGamePanelId;
@@ -56,8 +57,18 @@ UIShortcutBinding MakeBinding(std::string commandId, KeyCode keyCode) {
     return binding;
 }
 
+EditorRuntimePaths TestRuntimePaths() {
+    return EditorRuntimePaths{
+        .workspaceRoot = ".",
+        .executableRoot = ".",
+        .resourceRoot = "editor/resources",
+        .projectRoot = "project",
+        .captureRoot = "captures",
+    };
+}
+
 TEST(EditorShellAssetValidationTest, DefaultShellAssetPassesValidation) {
-    const auto shellAsset = BuildEditorApplicationShellAsset(".");
+    const auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
 
     const auto validation = ValidateEditorShellAsset(shellAsset);
     EXPECT_TRUE(validation.IsValid()) << validation.message;
@@ -79,7 +90,7 @@ TEST(EditorShellAssetValidationTest, ProductManifestDeclaresPanelRuntimeAndViewp
         << validation.message;
     ASSERT_TRUE(validation.IsValid());
 
-    const auto shellAsset = BuildEditorApplicationShellAsset(".");
+    const auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     ASSERT_EQ(shellAsset.panelRegistry.panels.size(), GetEditorProductPanels().size());
 
     const auto* gamePanel = FindEditorProductPanel(kGamePanelId);
@@ -92,7 +103,7 @@ TEST(EditorShellAssetValidationTest, ProductManifestDeclaresPanelRuntimeAndViewp
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsWorkspacePanelMissingFromRegistry) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
 
     auto* documentPanel =
         const_cast<XCEngine::UI::Editor::UIEditorPanelDescriptor*>(
@@ -108,7 +119,7 @@ TEST(EditorShellAssetValidationTest, ValidationRejectsWorkspacePanelMissingFromR
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsWorkspaceTitleDriftFromRegistry) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     auto* scenePanel = FindWorkspacePanelNode(shellAsset.workspace.root, "scene");
     ASSERT_NE(scenePanel, nullptr);
     shellAsset.workspace.activePanelId = scenePanel->panel.panelId;
@@ -119,7 +130,7 @@ TEST(EditorShellAssetValidationTest, ValidationRejectsWorkspaceTitleDriftFromReg
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsInvalidWorkspaceSessionState) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     ASSERT_FALSE(shellAsset.workspaceSession.panelStates.empty());
     shellAsset.workspaceSession.panelStates.front().open = false;
 
@@ -128,7 +139,7 @@ TEST(EditorShellAssetValidationTest, ValidationRejectsInvalidWorkspaceSessionSta
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsShellPresentationMissingFromRegistry) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     ASSERT_EQ(
         shellAsset.shellDefinition.workspacePresentations.size(),
         shellAsset.panelRegistry.panels.size());
@@ -142,7 +153,7 @@ TEST(EditorShellAssetValidationTest, ValidationRejectsShellPresentationMissingFr
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsDuplicateShellPresentationPanelId) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     ASSERT_EQ(
         shellAsset.shellDefinition.workspacePresentations.size(),
         shellAsset.panelRegistry.panels.size());
@@ -156,7 +167,7 @@ TEST(EditorShellAssetValidationTest, ValidationRejectsDuplicateShellPresentation
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsMissingRequiredShellPresentation) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     shellAsset.shellDefinition.workspacePresentations.clear();
 
     const auto validation = ValidateEditorShellAsset(shellAsset);
@@ -166,7 +177,7 @@ TEST(EditorShellAssetValidationTest, ValidationRejectsMissingRequiredShellPresen
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsInvalidShellMenuModel) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     shellAsset.shellDefinition.menuModel.menus = {
         {
             "window",
@@ -191,7 +202,7 @@ TEST(EditorShellAssetValidationTest, ValidationRejectsInvalidShellMenuModel) {
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsInvalidShortcutConfiguration) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     shellAsset.shortcutAsset.bindings.push_back(
         MakeBinding("missing.command", KeyCode::R));
 
@@ -202,7 +213,7 @@ TEST(EditorShellAssetValidationTest, ValidationRejectsInvalidShortcutConfigurati
 }
 
 TEST(EditorShellAssetValidationTest, ValidationRejectsShellPresentationKindMismatch) {
-    auto shellAsset = BuildEditorApplicationShellAsset(".");
+    auto shellAsset = BuildEditorApplicationShellAsset(TestRuntimePaths());
     ASSERT_EQ(
         shellAsset.shellDefinition.workspacePresentations.size(),
         shellAsset.panelRegistry.panels.size());
diff --git a/tests/UI/Editor/unit/test_project_browser_model.cpp b/tests/UI/Editor/unit/test_project_browser_model.cpp
index f0b20122..12e137b5 100644
--- a/tests/UI/Editor/unit/test_project_browser_model.cpp
+++ b/tests/UI/Editor/unit/test_project_browser_model.cpp
@@ -67,7 +67,7 @@ TEST(ProjectBrowserModelTests, ReparentFolderMovesFolderMetaAndRemapsCurrentFold
     ASSERT_TRUE(repo.WriteFile("project/Assets/B.meta"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
 
     ASSERT_TRUE(model.NavigateToFolder("Assets/A/Child"));
 
@@ -89,7 +89,7 @@ TEST(ProjectBrowserModelTests, MoveFolderToRootMovesFolderMetaAndRemapsCurrentFo
     ASSERT_TRUE(repo.WriteFile("project/Assets/Parent/Nested.meta"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
 
     ASSERT_TRUE(model.NavigateToFolder("Assets/Parent/Nested"));
 
@@ -110,7 +110,7 @@ TEST(ProjectBrowserModelTests, CreateFolderCreatesUniqueDirectoryUnderTargetFold
     ASSERT_TRUE(repo.CreateDirectory("project/Assets/Scenes/New Folder"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
 
     std::string createdFolderId = {};
     ASSERT_TRUE(model.CreateFolder("Assets/Scenes", "New Folder", &createdFolderId));
@@ -125,7 +125,7 @@ TEST(ProjectBrowserModelTests, CreateMaterialCreatesUniqueMaterialFileAndExposes
     ASSERT_TRUE(repo.WriteFile("project/Assets/Materials/New Material.mat"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
 
     std::string createdItemId = {};
     ASSERT_TRUE(model.CreateMaterial("Assets/Materials", "New Material", &createdItemId));
@@ -151,7 +151,7 @@ TEST(ProjectBrowserModelTests, CanMoveItemToFolderRejectsDescendantFolderTargets
     ASSERT_TRUE(repo.CreateDirectory("project/Assets/FolderB"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
 
     EXPECT_FALSE(model.CanMoveItemToFolder("Assets/FolderA", "Assets/FolderA/Nested"));
     EXPECT_TRUE(model.CanMoveItemToFolder("Assets/FolderA", "Assets/FolderB"));
@@ -165,7 +165,7 @@ TEST(ProjectBrowserModelTests, MoveItemToFolderMovesFileMetaAndRefreshesCurrentL
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scripts/Player.cs.meta"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
     ASSERT_TRUE(model.NavigateToFolder("Assets/Scripts"));
 
     std::string movedItemId = {};
@@ -192,7 +192,7 @@ TEST(ProjectBrowserModelTests, RenameFilePreservesExtensionAndUpdatesCurrentList
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scenes/Main.xc.meta"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
     ASSERT_TRUE(model.NavigateToFolder("Assets/Scenes"));
 
     std::string renamedItemId = {};
@@ -218,7 +218,7 @@ TEST(ProjectBrowserModelTests, DeleteFolderRemovesMetaAndFallsBackCurrentFolder)
     ASSERT_TRUE(repo.WriteFile("project/Assets/Parent/Nested.meta"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
     ASSERT_TRUE(model.NavigateToFolder("Assets/Parent/Nested"));
 
     ASSERT_TRUE(model.DeleteItem("Assets/Parent"));
@@ -236,7 +236,7 @@ TEST(ProjectBrowserModelTests, AssetEntriesExposeKindAndOpenCapability) {
     ASSERT_TRUE(repo.WriteFile("project/Assets/readme.txt"));
 
     ProjectBrowserModel model = {};
-    model.Initialize(repo.Root());
+    model.Initialize(repo.Root() / "project");
 
     const ProjectBrowserModel::AssetEntry* sceneEntry =
         model.FindAssetEntry("Assets/mesh.fbx");
diff --git a/tests/UI/Editor/unit/test_project_panel.cpp b/tests/UI/Editor/unit/test_project_panel.cpp
index 0ea4951b..4bfe2593 100644
--- a/tests/UI/Editor/unit/test_project_panel.cpp
+++ b/tests/UI/Editor/unit/test_project_panel.cpp
@@ -144,7 +144,7 @@ TEST(ProjectPanelTests, CreateFolderCommandCreatesDirectoryAndQueuesRename) {
     TemporaryRepo repo = {};
 
     ProjectPanel panel = {};
-    panel.Initialize(repo.Root());
+    panel.Initialize(repo.Root() / "project");
 
     const UIEditorHostCommandEvaluationResult evaluation =
         panel.EvaluateAssetCommand("assets.create_folder");
@@ -169,7 +169,7 @@ TEST(ProjectPanelTests, CreateMaterialCommandCreatesFileAndQueuesRename) {
     TemporaryRepo repo = {};
 
     ProjectPanel panel = {};
-    panel.Initialize(repo.Root());
+    panel.Initialize(repo.Root() / "project");
 
     const UIEditorHostCommandEvaluationResult evaluation =
         panel.EvaluateAssetCommand("assets.create_material");
@@ -192,7 +192,7 @@ TEST(ProjectPanelTests, BackgroundContextMenuCreateFolderUsesCurrentFolder) {
     TemporaryRepo repo = {};
 
     ProjectPanel panel = {};
-    panel.Initialize(repo.Root());
+    panel.Initialize(repo.Root() / "project");
 
     const UIEditorHostedPanelDispatchEntry dispatchEntry = MakeProjectDispatchEntry();
     panel.Update(
@@ -219,7 +219,7 @@ TEST(ProjectPanelTests, FolderContextMenuCreateFolderUsesFolderTarget) {
     ASSERT_TRUE(std::filesystem::create_directories(repo.Root() / "project/Assets/FolderA"));
 
     ProjectPanel panel = {};
-    panel.Initialize(repo.Root());
+    panel.Initialize(repo.Root() / "project");
 
     const UIEditorHostedPanelDispatchEntry dispatchEntry = MakeProjectDispatchEntry();
     panel.Update(
@@ -239,7 +239,7 @@ TEST(ProjectPanelTests, InjectedRuntimeSelectionDrivesRenameWithoutPanelSelectio
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scripts/Player.cs.meta"));
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
 
     ProjectPanel panel = {};
     panel.SetProjectRuntime(&runtime);
@@ -263,7 +263,7 @@ TEST(ProjectPanelTests, InjectedRuntimeCurrentFolderDrivesRenameFallbackWithoutT
     ASSERT_TRUE(repo.CreateDirectory("project/Assets/FolderA"));
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
 
     ProjectPanel panel = {};
     panel.SetProjectRuntime(&runtime);
@@ -283,7 +283,7 @@ TEST(ProjectPanelTests, IconServiceCanBeConfiguredBeforeRuntimeInitialization) {
     FakeIconService icons = {};
 
     panel.SetIconService(&icons);
-    panel.Initialize(repo.Root());
+    panel.Initialize(repo.Root() / "project");
 
     const UIEditorHostCommandEvaluationResult evaluation =
         panel.EvaluateAssetCommand("assets.create_folder");
@@ -296,7 +296,7 @@ TEST(ProjectPanelTests, CopyPathCommandUsesInjectedSystemHost) {
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scripts/Player.cs"));
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
     ASSERT_TRUE(runtime.NavigateToFolder("Assets/Scripts"));
     ASSERT_TRUE(runtime.SetSelection("Assets/Scripts/Player.cs"));
 
@@ -322,7 +322,7 @@ TEST(ProjectPanelTests, ShowInExplorerCommandUsesInjectedSystemHost) {
     ASSERT_TRUE(repo.WriteFile("project/Assets/Scripts/Player.cs"));
 
     EditorProjectRuntime runtime = {};
-    ASSERT_TRUE(runtime.Initialize(repo.Root()));
+    ASSERT_TRUE(runtime.Initialize(repo.Root() / "project"));
     ASSERT_TRUE(runtime.NavigateToFolder("Assets/Scripts"));
     ASSERT_TRUE(runtime.SetSelection("Assets/Scripts/Player.cs"));
 
diff --git a/tests/UI/Editor/unit/test_structured_editor_shell.cpp b/tests/UI/Editor/unit/test_structured_editor_shell.cpp
index 875e57fd..d11476ac 100644
--- a/tests/UI/Editor/unit/test_structured_editor_shell.cpp
+++ b/tests/UI/Editor/unit/test_structured_editor_shell.cpp
@@ -20,6 +20,7 @@ namespace {
 
 using XCEngine::Input::KeyCode;
 using XCEngine::UI::Editor::App::BuildEditorApplicationShellAsset;
+using XCEngine::UI::Editor::App::EditorRuntimePaths;
 using XCEngine::UI::Editor::BuildStructuredEditorShellBinding;
 using XCEngine::UI::Editor::BuildStructuredEditorShellServices;
 using XCEngine::UI::Editor::ResolveUIEditorShellInteractionModel;
@@ -40,6 +41,17 @@ std::filesystem::path RepoRootPath() {
     return std::filesystem::path(root).lexically_normal();
 }
 
+EditorRuntimePaths TestRuntimePaths() {
+    const std::filesystem::path root = RepoRootPath();
+    return EditorRuntimePaths{
+        .workspaceRoot = root,
+        .executableRoot = root,
+        .resourceRoot = root / "editor" / "resources",
+        .projectRoot = root / "project",
+        .captureRoot = root / "build" / "editor" / "captures",
+    };
+}
+
 bool PanelRegistriesMatch(
     const XCEngine::UI::Editor::UIEditorPanelRegistry& lhs,
     const XCEngine::UI::Editor::UIEditorPanelRegistry& rhs) {
@@ -126,7 +138,7 @@ UIShortcutBinding MakeBinding(std::string commandId, KeyCode keyCode) {
 } // namespace
 
 TEST(EditorUIStructuredShellTest, StructuredEditorShellDoesNotRequireRepositoryXCUIDocument) {
-    const auto shell = BuildEditorApplicationShellAsset(RepoRootPath());
+    const auto shell = BuildEditorApplicationShellAsset(TestRuntimePaths());
     const auto binding = BuildStructuredEditorShellBinding(shell);
 
     ASSERT_TRUE(binding.IsValid()) << binding.assetValidation.message;
@@ -136,7 +148,7 @@ TEST(EditorUIStructuredShellTest, StructuredEditorShellDoesNotRequireRepositoryX
 }
 
 TEST(EditorUIStructuredShellTest, StructuredShellBindingUsesEditorShellAssetAsSingleSource) {
-    auto shell = BuildEditorApplicationShellAsset(RepoRootPath());
+    auto shell = BuildEditorApplicationShellAsset(TestRuntimePaths());
     shell.shortcutAsset.commandRegistry.commands = {
         {
             "workspace.reset_layout",
diff --git a/tests/UI/Editor/unit/test_ui_editor_panel_registry.cpp b/tests/UI/Editor/unit/test_ui_editor_panel_registry.cpp
index 0d9ecc1a..adb5be53 100644
--- a/tests/UI/Editor/unit/test_ui_editor_panel_registry.cpp
+++ b/tests/UI/Editor/unit/test_ui_editor_panel_registry.cpp
@@ -7,6 +7,7 @@
 namespace {
 
 using XCEngine::UI::Editor::App::BuildEditorApplicationShellAsset;
+using XCEngine::UI::Editor::App::EditorRuntimePaths;
 using XCEngine::UI::Editor::FindUIEditorPanelDescriptor;
 using XCEngine::UI::Editor::UIEditorPanelDescriptor;
 using XCEngine::UI::Editor::UIEditorPanelRegistry;
@@ -14,8 +15,15 @@ using XCEngine::UI::Editor::UIEditorPanelRegistryValidationCode;
 using XCEngine::UI::Editor::ValidateUIEditorPanelRegistry;
 
 TEST(UIEditorPanelRegistryTest, DefaultRegistryContainsShellDescriptors) {
+    const EditorRuntimePaths paths{
+        .workspaceRoot = ".",
+        .executableRoot = ".",
+        .resourceRoot = "editor/resources",
+        .projectRoot = "project",
+        .captureRoot = "captures",
+    };
     const UIEditorPanelRegistry registry =
-        BuildEditorApplicationShellAsset(".").panelRegistry;
+        BuildEditorApplicationShellAsset(paths).panelRegistry;
 
     ASSERT_EQ(registry.panels.size(), 6u);
     const UIEditorPanelDescriptor* descriptor =