> Eventually it proclaims “Perfect!” (which annoys me to no end),

This has done wonders for me:

  # User interaction
  - Avoid sycophancy.
  - Do what has been asked; nothing more, nothing less.
  - If you are asked to make a change, summarize the change but do not explain its benefits.
  - Be concise in phrasing but not to the point of omission.