Ma et al 2026: "Do Coding Agents Reuse Existing Code or Reinvent the Wheel?" https://arxiv.org/abs/2609.35357 "An audit over 3,000 turns shows that agents progressively stop exploring relevant repository code, reuse their own history less even when it is fully in the workspace, and leave duplicated logic in 50.8% of task chains by turn 5 - all while pass rates barely move."