feat: UI输入框IME支持和编辑器Inspector重构 (#310)

UI系统改进:
- 添加 IMEHelper 支持中文/日文/韩文输入法
- UIInputFieldComponent 添加组合输入状态管理
- UIInputSystem 添加 IME 事件处理
- UIInputFieldRenderSystem 优化渲染逻辑
- UIRenderCollector 增强纹理处理

引擎改进:
- EngineBridge 添加新的渲染接口
- EngineRenderSystem 优化渲染流程
- Rust 引擎添加新的渲染功能

编辑器改进:
- 新增模块化 Inspector 组件架构
- EntityRefField 增强实体引用选择
- 优化 FlexLayoutDock 和 SceneHierarchy 样式
- 添加国际化文本

packages/editor-app/src/App.tsx

@@ -51,6 +51,7 @@ import { ConfirmDialog } from './components/ConfirmDialog';
 import { ExternalModificationDialog } from './components/ExternalModificationDialog';
 import { PluginGeneratorWindow } from './components/PluginGeneratorWindow';
 import { BuildSettingsWindow } from './components/BuildSettingsWindow';
+import { AssetPickerDialog } from './components/dialogs/AssetPickerDialog';
 import { ForumPanel } from './components/forum';
 import { ToastProvider, useToast } from './components/Toast';
 import { TitleBar } from './components/TitleBar';
@@ -210,6 +211,13 @@ function App() {
         externalModificationDialog, setExternalModificationDialog
     } = useDialogStore();
 
+    // 资产选择器对话框状态 | Asset picker dialog state
+    const [assetPickerState, setAssetPickerState] = useState<{
+        isOpen: boolean;
+        extensions?: string[];
+        onSelect?: (path: string) => void;
+    }>({ isOpen: false });
+
     // 全局监听独立调试窗口的数据请求 | Global listener for standalone debug window requests
     useEffect(() => {
         let broadcastInterval: ReturnType<typeof setInterval> | null = null;
@@ -490,6 +498,26 @@ function App() {
         return () => unsubscribe?.();
     }, [initialized, addDynamicPanel, setActivePanelId]);
 
+    // 资产选择器消息订阅 | Asset picker message subscription
+    useEffect(() => {
+        if (!initialized || !messageHubRef.current) return;
+        const hub = messageHubRef.current;
+
+        const unsubscribe = hub.subscribe('asset:pick', (data: {
+            extensions?: string[];
+            onSelect?: (path: string) => void;
+        }) => {
+            logger.info('Opening asset picker dialog with extensions:', data.extensions);
+            setAssetPickerState({
+                isOpen: true,
+                extensions: data.extensions,
+                onSelect: data.onSelect
+            });
+        });
+
+        return () => unsubscribe?.();
+    }, [initialized]);
+
     useEffect(() => {
         if (!initialized || !messageHubRef.current) return;
         const hub = messageHubRef.current;
@@ -1427,6 +1455,20 @@ function App() {
                 />
             )}
 
+            {/* 资产选择器对话框 | Asset Picker Dialog */}
+            <AssetPickerDialog
+                isOpen={assetPickerState.isOpen}
+                onClose={() => setAssetPickerState({ isOpen: false })}
+                onSelect={(path) => {
+                    if (assetPickerState.onSelect) {
+                        assetPickerState.onSelect(path);
+                    }
+                    setAssetPickerState({ isOpen: false });
+                }}
+                title={t('asset.selectAsset')}
+                fileExtensions={assetPickerState.extensions}
+            />
+
             {/* 渲染调试面板 | Render Debug Panel */}
             <RenderDebugPanel
                 visible={showRenderDebug}