How does enabling transaction payloads advance Kaspa's smart contract capabilities?

Kaspa's hardfork lifting the empty-payload restriction on native transactions is the network's first concrete step toward second-layer smart contract support. Before this change, a field called payload existed inside every Kaspa native transaction but was required to stay empty — it was reserved but unusable. Now that restriction is gone, allowing native transactions to carry arbitrary data. The paragraph is explicit that this enables only preliminary second-layer smart contract implementations, using Kaspa for sequencing and data availability, with settlement functionality not yet included. For a beginner, this matters because it shows Kaspa is building programmability incrementally — adding a data-carrying layer without changing the core proof-of-work security model that the network is built on.