There isn't a way to withdraw the manager cut from the ContestManager contract
Since the ContestManager.sol is the owner of the Pot contracts, when the closeContest::ContestManager function is being called, the managerCut is being sent to the ContestManager contract and there is no way to withdraw it from there, leading to the locking of the funds in there forever.
https://github.com/Cyfrin/2024-08-MyCut/blob/946231db0fe717039429a11706717be568d03b54/src/Pot.sol#L54
There is no way to withdraw the managerCut from any contest and it's always going to end up locked in the ContestManager contract.
Manual Review
Add a function to withdraw the managerCut from the ContestManager contract.
Something like that:
The contest is live. Earn rewards by submitting a finding.
This is your time to appeal against judgements on your submissions.
Appeals are being carefully reviewed by our judges.