LabPactum: Paid when the work is done

Pactum is an escrow smart contract modelled as an explicit, guarded state machine that moves a job from Created through Funded to Completed, with dispute and deadline-reclaim paths. Its strength is the disciplined design: access control on every transition and the checks-effects-interactions pattern throughout, with 18 Foundry tests including fuzzing that exercise the full lifecycle. It is a from-scratch Solidity build with a demo-mode tracker frontend that you can download and run locally.