During July 2025, Roman Habalov focused on improving the stability and memory safety of the deterministic runtime in the commonwarexyz/monorepo repository. He addressed a critical memory leak by refactoring Task ownership from Arc to Weak, thereby breaking circular references that previously led to unbounded memory growth under load. Roman updated the wake_by_ref logic to safely upgrade weak references before enqueuing tasks, ensuring correct wake-up semantics and reducing memory pressure. His work demonstrated a strong command of Rust’s ownership model, concurrency, and memory management, resulting in a more reliable enqueue path and contributing to the stabilization of related runtime improvements.