ui: round five — no band in cards, the rail narrows again

Owner verdict on the accent step: way too light - in-card thinking
drops the band entirely (rail only, identical heights). The rail
narrows again: 14px gap inside the 3ch inset (rail calc(3ch-14px),
about 8px) - the wide rail was distracting. Total inset still 3ch,
chevron law intact.

components/answered-card.tsx

@@ -144,9 +144,8 @@ export function AnsweredCard({ answer }: { answer: QuestionAnswerData }) {
 			{(answer.thinking ?? answer.note) && (
 				/* The SAME unified row (owner round, 2026-10-05): the quiz answer's
 				    thinking is the identical collapsible ThinkingBlock — one
-				    geometry, and since owner round four (2026-10-07) the band steps
-				    to accent on the card's surface (the same one-step lift the chat
-				    band gets). Collapsed thinking matches in height everywhere. */
+				    geometry, but NO band on the card (owner round five, 2026-10-07:
+				    the accent lift read too light); rail only, heights identical. */
 				<ThinkingBlock
 					testId="your-thinking"
 					label="YOUR THINKING"