how to claim a won game when opponent disconnected instead of resigning? very rude to play a whole game be a few moves from winning and the opponent just disconnects. I want to get points for the game and report this member

If you were clearly winning, the game gets adjudicated in your favor automatically.

If you think you’re winning, but the system doesn’t see a clear win, you can always ask for an adjudication of the game, by issuing this command:
/request-win <username here> <reason>

For example: /request-win Lyon he disconnected in a lost position