When a card's worktree has uncommitted changes or unpushed commits and the user
tries to close the card, docker-agent asks whether to delete it. The old prompt
crammed the question and the explanation into a single line, making it unclear
what "y" and "N" would actually do. Users had to parse a single run-on sentence
to understand that "y" meant permanent deletion.

The prompt now prints the two options on separate indented lines before asking
the question, so the consequences of each choice are unambiguous at a glance.
The question itself is moved to the last line using Print instead of
Println, which leaves the cursor right after the (y/N) marker — consistent
with how every other interactive prompt in the CLI behaves.

No behavioural change; the logic that reads and acts on the response is
untouched.