Guarded the answer-review render path (teaching cards, review
follow-ups, distractor explanations) on current_answer/pending_correct_advance
directly rather than solely on correct_review_panel.visible, and added
the same guard inside _render_unselected_distractor_explanations
itself. This closes a path where a fresh, never-answered question
could show wrong-answer explanations immediately, before any
selection or submission.
Also: unselected distractors now render in the same red "wrong" card
style as selected/locked-wrong choices once a question is being
reviewed, instead of staying in the plain default row style. And
removed the redundant percentage badge that was floating above the
in-progress follow-up quiz prompt, since the choice button above it
already shows the same percentage.
hz
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