feat: add mine page and secondary pages

src/pages/profile/index.tsx

@@ -0,0 +1,26 @@
+import SecondaryPage, { type SecondaryPageSection } from "../../components/secondary-page";
+import "./index.scss";
+
+const sections: SecondaryPageSection[] = [
+  {
+    title: "资料编辑",
+    items: [
+      { label: "头像", value: "支持后续替换" },
+      { label: "昵称", value: "张天爱" },
+      { label: "手机号", value: "135****2598" },
+      { label: "修改密码", value: "待接入" }
+    ]
+  }
+];
+
+export default function ProfilePage() {
+  return (
+    <SecondaryPage
+      eyebrow="PROFILE"
+      title="个人信息"
+      description="这里先保留资料编辑骨架，后续接入真实账号体系时可以直接补上头像上传、昵称编辑和密码修改。"
+      sections={sections}
+      footerTip="当前页面以结构预留为主，暂不提交真实修改。"
+    />
+  );
+}