refactor(user): create user ssh key only when user has beed logged

src/user.ts

@@ -217,6 +217,12 @@ export default class User {
       return;
     }
 
+    if (!await this.isLogged()) {
+      // 如果用户没有登录，则拒绝创建ssh key
+      console.error("User hasn't been logged, refuse to craete user ssh key")
+      return;
+    }
+
     const {
       publicKey,
       privateKey,