Opening a tip before answering is a nudge. The answer that follows is
still right — it is counted as right, and the percentage is not docked —
but it is not the same as right, so it keeps its own arc on the donut and
its own line in the legend: "3 correct after a tip".
attempt_answers.used_hint records it. The player reports which questions
had a tip opened before the answer went in; a tip read afterwards is
revision and does not count, which is the difference two of the tests
turn on. Both endings agree about it — an explicit submit carries the
list, and an exam that runs out takes it from the saved progress, so a
tab closing cannot launder a score.
Found while wiring this: RichText declared its component overrides inline
in the render, so every one was a fresh component type and React
remounted the whole rendered tree on each render. An open tip closed
itself every time the exam clock ticked. The map is memoised now.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TqXevQJhxFrM7jJg82cgZN
