mara, reviewing the swarm-ui destroy-trigger PR: "why the extra
styling? shouldnt there be a component that does this already?" There
wasnt one -- Dialog is deliberately content-agnostic (see its own
file-top comment), so the destroy confirm had grown its own
page-scoped .agents-destroy-confirm/-actions CSS for what is really a
generic "message + cancel/confirm button row" shape.
Extracted ui/confirm-dialog/ConfirmDialog.tsx: wraps Dialog, owns the
button row, leaves the message body to the caller via children.
AgentsPage now uses it instead of a bare Dialog + bespoke CSS; deleted
the now-unused AgentsPage.css.
82a4324b17