- src/diagram: plane (constructed points, graphs with computed roots, vertex,
extrema, tangent, asymptotes, piecewise limits, regions, rotations and
reflections, line from ax + by = c), number line with intervals and stacked
fractions, solids with hidden edges, bar/line/pie charts, sign tables, Venn,
arrow mappings, probability trees, fraction bars and mixed numbers, grids,
groups, clock. Pure-math text is bidi-overridden: Persian digits used to turn
3 × 4 = 12 into 12 = 4 × 3 even with dir=ltr.
- MathText locks math runs inside Persian sentences in chat bubbles and figure
captions, so -1 no longer shows as 1-.
- Family screen: a student sees only the invite-code form; the parent form is
behind a link.
- Dev-only diagram gallery at ?gallery (not in the production build).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
