Worked on backend improvements for the openclaw/openclaw repository, focusing on isolating ACP spawn delivery between run-mode and session-mode spawns. Addressed a bug where one-shot run spawns could inherit delivery behavior from session spawns, which risked cross-contamination in production. The solution involved modifying Node.js backend logic in TypeScript to prevent inline delivery for run-mode spawns while preserving it for thread-bound session spawns. Expanded automated test coverage to verify correct delivery behavior across both modes, ensuring reliable startup and improved mode isolation. This work enhanced the robustness of the spawn system and reduced the risk of unintended delivery inheritance in production environments.