Editor: Fix InspectorPanel AddComponent popup crash

- Remove SeparatorText which causes PopStyleVar mismatch in ImGui
- Add stderr redirection for better error capture
- Add debug logging to InspectorPanel
- Fix EditorLayer commented out undefined functions

editor/src/Application.cpp

@@ -7,9 +7,28 @@
 #include <imgui_impl_dx12.h>
 #include <imgui_internal.h>
 #include <stdio.h>
+#include <windows.h>
 
 extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 
+static LONG WINAPI GlobalExceptionFilter(EXCEPTION_POINTERS* exceptionPointers) {
+    const char* logPath = "D:\\Xuanchi\\Main\\XCEngine\\editor\\bin\\Release\\crash.log";
+    
+    FILE* f = fopen(logPath, "a");
+    if (f) {
+        fprintf(f, "[CRASH] ExceptionCode=0x%08X, Address=0x%p\n",
+            exceptionPointers->ExceptionRecord->ExceptionCode,
+            exceptionPointers->ExceptionRecord->ExceptionAddress);
+        fclose(f);
+    }
+    
+    fprintf(stderr, "[CRASH] ExceptionCode=0x%08X, Address=0x%p\n",
+        exceptionPointers->ExceptionRecord->ExceptionCode,
+        exceptionPointers->ExceptionRecord->ExceptionAddress);
+    
+    return EXCEPTION_EXECUTE_HANDLER;
+}
+
 namespace XCEngine {
 namespace Editor {
 
@@ -19,6 +38,31 @@ Application& Application::Get() {
 }
 
 bool Application::Initialize(HWND hwnd) {
+    // Set global exception filter first to catch any crashes
+    SetUnhandledExceptionFilter(GlobalExceptionFilter);
+    
+    // Redirect stderr to log file to capture ImGui errors
+    {
+        wchar_t exePath[MAX_PATH];
+        GetModuleFileNameW(nullptr, exePath, MAX_PATH);
+        std::wstring exeDirW(exePath);
+        size_t pos = exeDirW.find_last_of(L"\\/");
+        if (pos != std::wstring::npos) {
+            exeDirW = exeDirW.substr(0, pos);
+        }
+        std::string exeDir;
+        int len = WideCharToMultiByte(CP_UTF8, 0, exeDirW.c_str(), -1, nullptr, 0, nullptr, nullptr);
+        if (len > 0) {
+            exeDir.resize(len - 1);
+            WideCharToMultiByte(CP_UTF8, 0, exeDirW.c_str(), -1, &exeDir[0], len, nullptr, nullptr);
+        }
+        std::string stderrPath = exeDir + "\\stderr.log";
+        freopen(stderrPath.c_str(), "w", stderr);
+        
+        fprintf(stderr, "[TEST] stderr redirection test - this should appear in stderr.log\n");
+        fflush(stderr);
+    }
+    
     // Initialize logging first
     Debug::Logger::Get().AddSink(std::make_unique<Debug::ConsoleLogSink>());