feat: 本次提交更新内容如下

定版本，准备大批量迁移

nkebao/src/pages/content/Content.tsx

@@ -0,0 +1,10 @@
+import React from "react";
+import PlaceholderPage from "@/components/PlaceholderPage";
+
+const Content: React.FC = () => {
+  return (
+    <PlaceholderPage title="内容管理" showAddButton addButtonText="新建内容" />
+  );
+};
+
+export default Content;

nkebao/src/pages/content/NewContent.tsx

@@ -0,0 +1,8 @@
+import React from "react";
+import PlaceholderPage from "@/components/PlaceholderPage";
+
+const NewContent: React.FC = () => {
+  return <PlaceholderPage title="新建内容" />;
+};
+
+export default NewContent;

nkebao/src/pages/content/materials/List.tsx

@@ -0,0 +1,10 @@
+import React from "react";
+import PlaceholderPage from "@/components/PlaceholderPage";
+
+const Materials: React.FC = () => {
+  return (
+    <PlaceholderPage title="素材管理" showAddButton addButtonText="新建素材" />
+  );
+};
+
+export default Materials;

nkebao/src/pages/content/materials/New.tsx

@@ -0,0 +1,8 @@
+import React from "react";
+import PlaceholderPage from "@/components/PlaceholderPage";
+
+const MaterialsNew: React.FC = () => {
+  return <PlaceholderPage title="新建素材" />;
+};
+
+export default MaterialsNew;