When using codex-cli / Claude Code, I look for opportunities to improve either the AGENTS.md file based on the path that the LLM is taking or to improve repo structure, docs, var names, etc that might help make things more clear in the future. Since this is still somewhat task related, I can usually stay focused.

I haven't had much luck doing two completely different tasks at the same time. At net I think it slows me down due to the context switching.