In ThrusterTreasure.sol, both requestRandomNumberMany() and requestRandomNumber() contains a line of unnecessary code requestedRandomNumber[sequenceNumber] = msg.sender;.
Due to requestRandomNumberMany() and requestRandomNumber() only allows owner to call and request random number from Etropy, msg.sender will always be owner. Also sequenceNumber is a return intermediate value from Etropy, and will only be meaningful when paired with the corresponding random numbers and commitment values that are generated off-chain. So storing a single sequenceNumber with always the same owner address only costs more gas with no meaningful impact.
In addition, the storage mapping requestedRandomNumber[sequenceNumber] can also be removed since it is never read on-chain and will not be helpful for the off-chain process either because it doesnt show the pairing of userCommitment and sequenceNumber. Simply emit RandomNumberRequest will be sufficient for the off-chain process. 
(https://github.com/code-423n4/2024-02-thruster/blob/3896779349f90a44b46f2646094cb34fffd7f66e/thruster-protocol/thruster-treasure/contracts/ThrusterTreasure.sol#L243)
Remove requestedRandomNumber[sequenceNumber] = msg.sender;.
