fix: 修复多个UI框架问题

- 修复 InspectorPanel InputText 使用 data()/capacity() 的错误
- 修复未使用变量警告
- 修复 ProjectManager 路径重复拼接 bug (Assets/Assets)
- 返回按钮在 Assets 目录时禁用但保持显示
- 删除 ProjectPanel 创建按钮，调整 Refresh 位置
- 修复 ProjectPanel 搜索过滤时的 ID 冲突
- 修复 InspectorPanel CollapsingHeader ID 冲突

ui/src/Application.cpp

@@ -30,10 +30,8 @@ bool Application::Initialize(HWND hwnd) {
     ImGuiIO& io = ImGui::GetIO();
     io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
     
-    ImFont* font = io.Fonts->AddFontFromFileTTF("C:/Windows/Fonts/msyh.ttc", 16.0f);
-    ImFont* defaultFont = io.Fonts->AddFontDefault();
-    (void)font;
-    (void)defaultFont;
+    io.Fonts->AddFontFromFileTTF("C:/Windows/Fonts/msyh.ttc", 16.0f);
+    io.Fonts->AddFontDefault();
     
     unsigned char* pixels;
     int width, height;

ui/src/Managers/ProjectManager.cpp

@@ -34,10 +34,10 @@ void ProjectManager::NavigateBack() {
 }
 
 std::string ProjectManager::GetCurrentPath() const {
-    if (m_path.empty()) return "";
-    std::string result;
-    for (size_t i = 0; i < m_path.size(); i++) {
-        if (i > 0) result += "/";
+    if (m_path.empty()) return "Assets";
+    std::string result = "Assets";
+    for (size_t i = 1; i < m_path.size(); i++) {
+        result += "/";
         result += m_path[i]->name;
     }
     return result;
@@ -99,8 +99,10 @@ void ProjectManager::Initialize(const std::string& projectPath) {
 }
 
 std::wstring ProjectManager::GetCurrentFullPathW() const {
+    if (m_path.empty()) return Utf8ToWstring(m_projectPath);
+    
     std::wstring fullPath = Utf8ToWstring(m_projectPath);
-    for (size_t i = 0; i < m_path.size(); i++) {
+    for (size_t i = 1; i < m_path.size(); i++) {
         fullPath += L"/" + Utf8ToWstring(m_path[i]->name);
     }
     return fullPath;

ui/src/panels/InspectorPanel.cpp

@@ -2,6 +2,7 @@
 #include "Managers/SceneManager.h"
 #include "Managers/SelectionManager.h"
 #include <imgui.h>
+#include <string>
 
 namespace UI {
 
@@ -45,7 +46,9 @@ void InspectorPanel::RenderComponent(Component* component) {
     
     const char* name = component->GetName().c_str();
     
-    if (ImGui::CollapsingHeader(name, ImGuiTreeNodeFlags_DefaultOpen)) {
+    std::string headerId = name + std::string("##") + std::to_string(reinterpret_cast<uintptr_t>(component));
+    
+    if (ImGui::CollapsingHeader(headerId.c_str(), ImGuiTreeNodeFlags_DefaultOpen)) {
         ImGui::Indent(10.0f);
         
         if (auto* transform = dynamic_cast<TransformComponent*>(component)) {
@@ -65,15 +68,23 @@ void InspectorPanel::RenderComponent(Component* component) {
             ImGui::DragFloat3("##Scale", transform->scale, 0.1f);
         }
         else if (auto* meshRenderer = dynamic_cast<MeshRendererComponent*>(component)) {
+            char materialBuffer[256] = {};
+            strncpy_s(materialBuffer, meshRenderer->materialName.c_str(), sizeof(materialBuffer) - 1);
             ImGui::Text("Material");
             ImGui::SameLine(80);
             ImGui::SetNextItemWidth(180);
-            ImGui::InputText("##Material", meshRenderer->materialName.data(), meshRenderer->materialName.capacity());
+            if (ImGui::InputText("##Material", materialBuffer, sizeof(materialBuffer))) {
+                meshRenderer->materialName = materialBuffer;
+            }
             
+            char meshBuffer[256] = {};
+            strncpy_s(meshBuffer, meshRenderer->meshName.c_str(), sizeof(meshBuffer) - 1);
             ImGui::Text("Mesh");
             ImGui::SameLine(80);
             ImGui::SetNextItemWidth(180);
-            ImGui::InputText("##Mesh", meshRenderer->meshName.data(), meshRenderer->meshName.capacity());
+            if (ImGui::InputText("##Mesh", meshBuffer, sizeof(meshBuffer))) {
+                meshRenderer->meshName = meshBuffer;
+            }
         }
         
         ImGui::Unindent(10.0f);

ui/src/panels/ProjectPanel.cpp

@@ -18,27 +18,24 @@ void ProjectPanel::Render() {
     
     auto& manager = ProjectManager::Get();
     
-    if (manager.CanNavigateBack()) {
-        if (ImGui::Button("<")) {
+    bool canGoBack = manager.CanNavigateBack();
+    ImGui::BeginDisabled(!canGoBack);
+    if (ImGui::Button("<")) {
+        if (canGoBack) {
             manager.NavigateBack();
         }
-        ImGui::SameLine();
     }
+    ImGui::EndDisabled();
+    ImGui::SameLine();
     
     ImGui::Text("%s", manager.GetCurrentPath().c_str());
     
     ImGui::SameLine();
-    ImGui::SetCursorPosX(ImGui::GetWindowWidth() - 140.0f);
+    ImGui::SetCursorPosX(ImGui::GetWindowWidth() - 80.0f);
     if (ImGui::Button("Refresh")) {
         manager.RefreshCurrentFolder();
     }
     
-    ImGui::SameLine();
-    if (ImGui::Button("+")) {
-        m_showCreateFolderPopup = true;
-        strcpy_s(m_newFolderName, "NewFolder");
-    }
-    
     ImGui::Separator();
     
     ImGui::PushItemWidth(-1);
@@ -69,7 +66,7 @@ void ProjectPanel::Render() {
         if (itemIndex > 0 && itemIndex % columns != 0) {
             ImGui::SameLine();
         }
-        RenderAssetItem(items[i], i);
+        RenderAssetItem(items[i], itemIndex);
         itemIndex++;
     }