Inject editor viewport shader paths at runtime

editor/app/Bootstrap/Application.cpp

@@ -33,6 +33,11 @@ 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") &&
+        std::filesystem::exists(root / "project");
+}
+
 void EnableDpiAwareness() {
     const HMODULE user32 = GetModuleHandleW(L"user32.dll");
     if (user32 != nullptr) {
@@ -106,16 +111,12 @@ int RunXCEditor(HINSTANCE hInstance, int nCmdShow) {
 
 } // namespace XCEngine::UI::Editor
 
-#ifndef XCUIEDITOR_REPO_ROOT
-#define XCUIEDITOR_REPO_ROOT "."
-#endif
-
 namespace XCEngine::UI::Editor {
 
 bool Application::Initialize(HINSTANCE hInstance, int nCmdShow) {
     m_hInstance = hInstance;
-    m_repoRoot = ResolveRepoRootPath();
     m_resourceService = std::make_unique<Host::Win32EditorResourceService>(m_hInstance);
+    m_repoRoot = ResolveRepoRootPath(m_resourceService->GetExecutableDirectory());
     EnableDpiAwareness();
 
     const std::filesystem::path logRoot = m_resourceService->GetExecutableDirectory() / "logs";
@@ -265,12 +266,28 @@ void Application::Shutdown() {
     ShutdownUIEditorRuntimeTrace();
 }
 
-std::filesystem::path Application::ResolveRepoRootPath() {
-    std::string root = XCUIEDITOR_REPO_ROOT;
-    if (root.size() >= 2u && root.front() == '"' && root.back() == '"') {
-        root = root.substr(1u, root.size() - 2u);
+std::filesystem::path Application::ResolveRepoRootPath(
+    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();
     }
-    return std::filesystem::path(root).lexically_normal();
+
+    while (!current.empty()) {
+        if (HasEditorRepoMarkers(current)) {
+            return current.lexically_normal();
+        }
+
+        const std::filesystem::path parent = current.parent_path();
+        if (parent == current) {
+            break;
+        }
+        current = parent;
+    }
+
+    return executableDirectory.lexically_normal();
 }
 
 LONG WINAPI Application::HandleUnhandledException(EXCEPTION_POINTERS* exceptionInfo) {