Add animation controller system, material assets and skeleton visualization

- .animctrl state machine asset (params/transitions/blend trees, 1D+2D
  directional blending) with Unity Animator-style editor panel: state
  list, transitions, params, directional pad preview driving live
  CrossFade on the selected entity
- Split animation evaluation out of SceneRenderer into
  AnimationSystem/AnimationEvaluator; skin palettes with rest-pose
  fallback and blend-weight epsilon filtering
- MaterialAsset (.material) with reload-safe preview tile pool
  (DropMaterial clears dirty refs before instance destruction)
- EditorGizmoPass skeleton wires + viewport joint overlay; camera
  projection rework (baked Vulkan Y-flip, ortho support)
- Editor/game build split via HELLOVULKAN_EDITOR option

App/editor/Editor.cpp

@@ -15,6 +15,8 @@
 #include "AssetBrowserPanel.h"
 #include "HierarchyPanel.h"
 #include "InspectorPanel.h"
+#include "MaterialEditorPanel.h"
+#include "ControllerEditorPanel.h"
 #include "ViewportPanel.h"
 #include "StatsPanel.h"
 
@@ -47,6 +49,11 @@ void Editor::Init(const EditorContext& ctx)
     m_Viewport = std::make_unique<ViewportPanel>();
     m_Stats = std::make_unique<StatsPanel>();
     m_AssetBrowser = std::make_unique<AssetBrowserPanel>();
+    m_MaterialEditor = std::make_unique<MaterialEditorPanel>();
+    m_Ctx.materialEditor = m_MaterialEditor.get();
+    m_ControllerEditor = std::make_unique<ControllerEditorPanel>();
+    m_Ctx.controllerEditor = m_ControllerEditor.get();
+    m_Ctx.selected = &m_Selected;
 
     // 旧布局一次性迁移：面板改名（Hierarchy→Outliner / Inspector→Details /
     // Asset Browser→Content Browser）= docking 身份全变，旧 imgui.ini 对
@@ -192,6 +199,8 @@ void Editor::Draw()
     }
     if (m_ShowStats)     m_Stats->Draw(m_Ctx);
     if (m_ShowAssetBrowser) m_AssetBrowser->Draw(m_Ctx);
+    if (m_ShowMaterialEditor) m_MaterialEditor->Draw(m_Ctx);
+    m_ControllerEditor->Draw(m_Ctx);   // 面板内部 m_Open 门控
 
     DrawQuitModal();
     DrawSceneModals();
@@ -269,6 +278,7 @@ void Editor::DrawMenuBar()
         ImGui::MenuItem("Viewport", nullptr, &m_ShowViewport);
         ImGui::MenuItem("Stats", nullptr, &m_ShowStats);
         ImGui::MenuItem("Content Browser", nullptr, &m_ShowAssetBrowser);
+        ImGui::MenuItem("Material Editor", nullptr, &m_ShowMaterialEditor);
         ImGui::EndMenu();
     }
 
@@ -399,6 +409,8 @@ void Editor::DrawDockSpace()
         ImGui::DockBuilderDockWindow("Stats", dockCenter);   // Viewport 旁 tab
         ImGui::DockBuilderDockWindow("Content Browser", dockBottom);
         ImGui::DockBuilderDockWindow("Details", dockRight);
+        ImGui::DockBuilderDockWindow("Material Editor", dockRight);   // Details 旁 tab
+        ImGui::DockBuilderDockWindow("Controller Editor", dockRight); // Details 旁 tab
 
         ImGui::DockBuilderFinish(dockspaceId);
     }