Missing Error Declarations Due to Incomplete Interface Inheritance in `Circles` Contract

[hats-bug-reporter[bot]]

Github username: -- Twitter username: -- Submission hash (on-chain): 0x2d821cde4d571534e9cc7f76fa9474f832a39f9850695c5620cffa98fe4ffdca Severity: low

Description: Description\ Circles contract emits errors missing from the interface inherited by the contract. Specifically, the Circles contract only inherits from ICirclesErrors and does not inherit from the ICirclesDemurrageErrors interface, which contains important error declarations.

Errors like CirclesERC1155MintBlocked and CirclesDemurrageAmountExceedsMaxUint190 are defined in ICirclesDemurrageErrors but are not directly available within the Circles contract because it does not inherit from that interface.

The failure to inherit this interface could lead to issues where developers are unaware of the emitted errors or find it difficult to track error definitions. This can cause confusion and reduce code maintainability.

List of Missing Errors:

• CirclesERC1155MintBlocked is emitted when the minting process is blocked due to an active Circles v1 contract associated with the human’s avatar.
• CirclesDemurrageAmountExceedsMaxUint190 is triggered when a demurrage calculation results in a balance that exceeds the maximum allowed value (MAX_VALUE), leading to a contract revert.
• CirclesDemurrageDayBeforeLastUpdatedDay This error is emitted when an attempt is made to calculate or update balances for a day that predates the last update, causing a logical issue in demurrage calculations.

These errors are present in the ICirclesDemurrageErrors interface but are not accessible in the Circles contract due to the missing inheritance.

Impact\ Without the interface inheritance, developers referencing the Circles contract will not have visibility into all potential errors the contract may emit. This lack of transparency can make debugging more difficult when the contract reverts due to one of the missing errors.

Errors like CirclesERC1155MintBlocked and CirclesDemurrageAmountExceedsMaxUint190 are crucial for the contract's business logic, especially in handling minting and demurrage. If these errors are not explicitly part of the contract's interface, it could lead to inconsistent or improper error handling in interacting systems or when extending the contract.

Recommendation\ The Circles contract should inherit from both ICirclesErrors and ICirclesDemurrageErrors. This ensures that all the necessary error declarations are available to the contract.

[benjaminbollen]

Thank you for your report on the error declarations and interface inheritance in the Circles contract. After review, we've determined this is not an issue.

The current inheritance structure is intentional and correctly implements our design. The suggested changes would be unnecessary and could lead to compilation errors.

We appreciate your examination of our contract structure. Thank you for your participation in this security review.