3 Commits

Include renames

Author	SHA1	Message	Date
tiennm99	fb6089aff0	docs: brainstorm + plan for cool demo pages round 2 ... Brainstorm survey of 6 candidates with brutal-honesty trade-off matrix; top-3 ranked (Pythagoras động, Sàng Eratosthenes, đường thẳng y=ax+b). Plan with 8 phases — 3 engines + 3 lessons + glue + verify.	2026-05-15 20:35:02 +07:00
tiennm99	610dfa7cec	docs: brainstorm survey + lesson 4+5 plan	2026-05-03 13:15:55 +07:00
tiennm99	a0da079500	feat: port 3 interactive geometry lessons + geom-engine ... - Add pure geom-engine module (vec, triangle, circle, ticks) with 34 vitest tests - Add 3 lessons under /hinh-hoc/: tam-giac-bang-nhau (SSS), tam-giac-dong-dang (similarity), goc-noi-tiep (inscribed angle) - Add reactive draggable Svelte action with arrow-key a11y - Add per-lesson colocated i18n + site chrome + lesson registry - Enable Hình học topic card on landing; keep Số học/Đại số as Sắp ra mắt - Codify pedagogical tick palette as Tailwind colors.pair.{1,2,3} - Add Be Vietnam Pro via @fontsource	2026-04-30 22:27:26 +07:00