添加登录内容，尚未完善，先创建分支

app/routes/logout.tsx

@@ -0,0 +1,51 @@
+import { type LoaderFunctionArgs, redirect } from "@remix-run/node";
+import { OAuthClient } from "~/utils/oauth-client";
+import { OAUTH_CONFIG } from "~/config/api-config";
+import { sessionStorage } from "~/root";
+
+export async function loader({ request }: LoaderFunctionArgs) {
+  const session = await sessionStorage.getSession(request.headers.get("Cookie"));
+  
+  // 获取访问令牌
+  const accessToken = session.get("accessToken");
+  
+  if (accessToken) {
+    try {
+      // 创建OAuth客户端
+      const oauthClient = new OAuthClient(OAUTH_CONFIG);
+      
+      // 构建登出后重定向URL
+      const url = new URL(request.url);
+      const redirectUrl = url.searchParams.get("redirect") || `${url.protocol}//${url.host}/login`;
+      
+      // 调用IDaaS单点登出
+      const logoutSuccess = await oauthClient.logout(accessToken, redirectUrl);
+      
+      if (!logoutSuccess) {
+        console.warn("IDaaS单点登出失败，但仍清除本地会话");
+      }
+    } catch (error) {
+      console.error("单点登出过程中出错:", error);
+    }
+  }
+  
+  // 无论IDaaS登出是否成功，都清除本地会话
+  const cookie = await sessionStorage.destroySession(session);
+  
+  return redirect("/login", {
+    headers: {
+      "Set-Cookie": cookie
+    }
+  });
+}
+
+export default function Logout() {
+  return (
+    <div className="flex items-center justify-center min-h-screen">
+      <div className="text-center">
+        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-500 mx-auto"></div>
+        <p className="mt-4 text-gray-600">正在退出登录...</p>
+      </div>
+    </div>
+  );
+}