- state/companion.ts: one store for the chosen companion (also in localStorage so splash/login show it).
BrandMark (the orange «π» tile) now shows the companion's symbol (Σ Δ π ω) in its colour; screen-header
mascots, loaders and empty/error states default to it; the assistant is «از {name} بپرس» with its face,
colour and wording; the shop, lesson and quiz «ask» buttons name it; the active tab takes its tint.
- Traits, all client-side and light: Σ sigma keeps a running tally of correct answers in the quiz header;
Δ delta shows a flame «×N» chip and an extra buzz for answers in a row; π pi gives a short solving tip
after a wrong answer; ω omega throws gold confetti at the end of every island whatever the score.
Each companion's «correct» sound is pitched differently; confetti uses its colours. Characters screen
lists each trait.
- android/README.md: what MainActivity.kt has that the installed APK lacks (vibrate bridge, media gesture,
in-app gateway + paysInApp), what to check on a phone after building, signing owner, Bazaar policy note.
Checked in headless Chrome with Sigma, Delta and Omega selected (home, assistant, shop, characters, quiz).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Navigator stage: the next screen mounts hidden under the current one and is revealed only when its
first data has arrived (ScreenGate held by useAsync/useGateHold), at most 450 ms; a thin top bar shows
after 120 ms of waiting. Push slides from the left, back from the right, tabs only fade.
- Session cache (stale-while-revalidate) for screen GETs: revisited screens draw instantly.
- Home map and stats are fetched during the splash, so the first screen arrives complete.
- Entrance pop-ins (mascot, islands, lesson cards) run on first view only, not on every revisit.
- Shop status card shows placeholders instead of a wrong «نداری» while loading.
- Re-tapping the open tab scrolls to top instead of reloading; sheets close with a swipe down.
- Quiz: «۱ از ۴» instead of «۱/۴» (read as a fraction), varied praise, «N تا پشتِ هم درست»,
growth-mindset copy after a weak round, zero-reward tiles hidden.
- Streak: a concrete next step when the streak is 0 or today is still empty.
Checked in headless Chrome against the local backend (frame captures at 150 ms and 700 ms latency,
rapid tab tapping, full quiz run). Not checked on a real phone or iOS Safari.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- the parents section is gone: no parent login, invite codes or "I'm a parent" button;
"گزارشِ والدین" in the profile shows the week against the previous one (praise line,
six tiles, minutes-per-day and right/wrong-per-day charts, a table of the numbers)
- birth date as day / month / year selects (Jalali, leap Esfand handled) instead of age;
adults (19+) are asked which grade's math they want to learn
- user ID under the name, copyable
- "پرداختها و فاکتورها": every order with invoice number, discount, amount and reference code
- tutor: when the free daily quota runs out, a button to the subscription page instead of "retry"
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Measured by rendering every question, option and several tutor answers in
Chrome and comparing the on-screen x of each number (2026-09-29):
- A list inside a sentence ('از −۳ به −۲، −۱، ۰ میرسیم', 'الگویِ ۲، ۵، ۸')
was locked as one left-to-right run, so all 482 read backwards. '،' and
'؛' outside brackets now split the run; sets and coordinates in brackets
stay one run. Locked runs are isolates (isolate-override), otherwise the
comma between two of them was still pulled left-to-right.
- Without MathText 704 of 931 minus signs and 602 of 983 expressions were
misplaced; lesson and island titles, the lesson intro, unit blurb,
notification bodies and ticket messages now go through it.
- The chat box takes its direction from each line's first letter, so a
line of pure math stays left-to-right while typing. A line that starts
in Persian can still show its math reordered inside the box; a textarea
cannot isolate part of its text. The sent message renders correctly.
Four expressions with Persian words inside them ('f(x) = (ریشه دوم x) + ۵۰')
remain ambiguous.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The model provider holds the whole answer and sends it at once; a full
answer with a diagram took about 30 s on 2026-09-29. A fixed 'thinking'
line for that long looked stuck. The stage times are approximate and not
tied to what the server is actually doing.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- 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>
- Home is now the island path of every unit with one clear Start button on the
current island; the six-card dashboard is gone.
- Start opens /nodes/{id}/quiz (4 questions) instead of one-question lessons, so
an island takes one round instead of ~11. Lessons stay one tap away in the sheet.
- Tutor answers render the backend's validated diagram (plane, number line,
fraction) as React SVG; function expressions go through a small parser, no eval.
- Tedi, the mobile-preview mascot, joins as the fourth companion with all six moods
and an onboarding slide.
- Light polish: 3D buttons, header gradients, warmer page background.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The whole app lived in one 3,071-line App.tsx on a Figma scaffold (60 unused
packages, 45 unused UI components, no type-check). The live site could not
reach the backend, Persian-keyboard digits were erased from the phone field,
guests were signed out after an hour, "mark read" hit a method the server
does not accept (405), and iOS Safari blocked the payment window.
What changed:
- src/ split into api/ (one typed client: timeouts, GET retry, single-flight
refresh, SSE), screens/ (one file each), components/, state/, nav/, lib/.
- The API address is configuration only: public/config.js at runtime, then
VITE_API_BASE_URL at build time, then same-origin /api. No domain in code.
- Responsive shell instead of a fixed 390x844 phone frame; self-hosted
Vazirmatn instead of Google Fonts; strict TypeScript, `npm run build`
type-checks first.
- Everything on the handoff list: tutor answers keep their line breaks, have
thumbs up/down, follow-ups, "from the book" badge, retry, history that
survives tab switches and reloads, "why was I wrong" from a wrong answer
with questionId; question reports; hearts with maxHearts/unlimited and a
no-hearts screen with the refill time; result screen and a visible error
when lesson completion fails; subscription status, badge, discount code
before the gateway and the payment-return message; guest refresh token;
6-digit OTP with resend timer; age saved as a Jalali birthYear; PATCH
read-all; leaderboard refetched on open with "you" highlighted; selected
companion shown across the app; logout that revokes the refresh token.
- New screens for endpoints that had none: profile, streak calendar,
support tickets and bug reports, parents, invite-a-friend (with ?ref=
tracking), guest-to-phone upgrade.
- Browser/phone back button walks the screen stack.
Checked with a headless-Chrome walkthrough against a local backend at
390x844 and 360x740 (fresh guest: onboarding, setup, a full lesson, map,
island sheet, every tab and sub-screen, one real tutor question, reload,
logout): no console errors, no failed API calls. Real SMS login and a real
Zarinpal payment were not exercised.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
