优化第一阶段

lib/plugins/gltf/config.js

@@ -0,0 +1,27 @@
+import { listGltfFiles } from "../../utils/gltf.js";
+
+const extensionStep = {
+  name: "扩展选项",
+  type: "multiselect",
+  message: "请选择要添加的glTF扩展",
+  options: [
+    { value: "textureBasisu", label: "KHR_texture_basisu（纹理自动扩展）", hint: "自动添加KTX2纹理扩展支持" },
+    { value: "placeholder1", label: "预留选项1", hint: "功能开发中..." },
+    { value: "placeholder2", label: "预留选项2", hint: "功能开发中..." },
+    { value: "placeholder3", label: "预留选项3", hint: "功能开发中..." }
+  ],
+  default: ["textureBasisu"]
+};
+
+export function getSteps() {
+  const files = listGltfFiles();
+  const fileStep = {
+    name: "文件选择",
+    type: "multiselect",
+    message: files.length ? "请选择要处理的glTF文件" : "当前目录未找到glTF文件",
+    options: files.map(file => ({ value: file, label: file })),
+    default: [...files]
+  };
+
+  return [fileStep, extensionStep];
+}