4.3 Deep Implementation of Turbine Escort Mechanism

Objective: To ensure that the rewards extracted do not exceed the user's net investment in the system.

Implementation details: The contract maintains a mapping (address => uint256) named userNetContribution, which is updated under the following conditions:

XPULS Buy: userNetContribution[sender] += amount

XPULS sales: userNetContribution[sender] -= amount

Before executing claimRewards(), the contract will perform an atomic checkContribution.

Solidity
// TurbineEscort.sol (Simplified Logic)
 
function checkContribution(address user, uint256 claimAmount) internal view returns (bool) {
// Ensure the user's cumulative net contribution is greater than or equal to the value of the current reward to be extracted
    return userNetContribution[user] >= claimAmount;
}

If the check fails, the reward won't be lost but will remain in the system, continuing to earn compound interest until the user repurchases XPULS to boost their PoC balance.

This design serves as Noah 2.0's critical defense against the DeFi death spiral, transforming the externalization of economic system risks into users' personal accountability and commitment.