Completely agree. Until recently I only let LLMs write my commit messages, but I've found that versioning the plan files is the better artifact, it preserves agentic decisions and my own reasoning without the noise.

My current workflow: write a detailed plan first, then run a standard implement -> review loop where the agent updates the plan as errors surface. The final plan doc becomes something genuinely useful for future iterations, not just a transcript of how we got there.