Fixes the large empty gap below the answer choices reported after the
answer-row redesign - the stem+choices VBox was pinned to the top of an
expand-filled scroll panel with all the leftover height sitting unused
below choice E. Now centers that block when unanswered and reverts to
top alignment once the explanation/review content grows underneath it.
StyleBoxFlat-drawn circles kept looking rough at this size even after
tuning corner detail/antialiasing, so the badges are now two small SVG
assets (outline and filled) tinted per-state via modulate instead -
crisp regardless of size. Also increased row height, badge size, and
margins across the board; the previous pass's padding bump was too
timid and the rows still read as cramped.
Unselected/eliminated choices now sit in a flat list with a thin
bottom divider instead of each getting its own bordered box, and only
the selected/correct/wrong choice pops out as a rounded, tinted card -
closer to the reference mockup and less visually busy than every
option looking like an separate boxed card.
A choice that was crossed out (right-click) and also happened to be
locked as the submitted-wrong choice, or revealed as the correct
answer, silently lost its strikethrough because the percentage-badge
branches took precedence over the elimination check in the same
if/elif chain. Decoupled the two so a choice can show both the
strikethrough and its reveal percentage at once.
Adds a full flashcards system: FSRS-based scheduling, cloze/basic
card types, CSV import/export, media storage, and study UI, wired
into navigation and the dashboard alongside existing question flows.
hz