fix: Update user service to handle missing username

The code changes in the user service file fix an issue where the username was not being properly handled. If the user's name is not available, the login name is now used instead. Additionally, the default permission value is set to 0. This ensures that the user object is correctly populated before querying the database.

server/src/services/user.ts

@@ -39,9 +39,9 @@ export const UserService = (db: DB, env: Env) => new Elysia({ aot: false })
                     permission: number | null;
                 } = {
                     openid: user.id,
-                    username: user.name,
+                    username: user.name || user.login,
                     avatar: user.avatar_url,
-                    permission: null
+                    permission: 0
                 };
                 await db.query.users.findFirst({ where: eq(users.openid, profile.openid) })
                     .then(async (user) => {