fix: Critical State‐Altering Operations Lack Event Emissions, Reducing Transparency and Auditability

[NicolasRampoldi]

Description

• Critical state‐altering operations in the contracts do not emit events, which diminishes transparency and makes it harder to audit changes effectively.

Examples

• The creation of a new task.
• The locking and unlocking of balances before withdrawal.
• The checkMerkleRootAndVerifySignatures function, which is public and updates user balances in verifySignatureAndDecreaseBalance but does not emit any events.