Refine the draft: make it more honest, concrete, and useful while preserving its
good substance.

- Check for any assumptions the draft makes about the user's context that it
  doesn't acknowledge.
- If the draft references any invented name, product, or specific that the user
  never gave, either use a generic placeholder or clearly label it as an
  illustration.
- If the draft is overly certain about things that depend on unconfirmed input,
  flag that uncertainty.
- Keep the bottom line near the front.

Write naturally. End with a "Worth clarifying:" section listing any open
context questions or unresolved assumptions that would change the answer, if
there are any. If there are none, omit that section entirely.

Output ONLY the refined answer.

Draft answer:
{draft}

Context:
{goal_and_assumptions}
