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2 commits

Author SHA1 Message Date
df34337b4a Accessibility pass, report control for homework exercises, clearer rail actions
- axe is clean across every screen in both themes, phone and desktop. Fixed:
  the hidden file inputs (aria-hidden + tabIndex -1 — they are opened by
  labelled buttons, so they should not be in the accessibility tree), the
  heading order (deck/homework/smart-review cards are h2 under the page h1;
  LearningSection takes a level so it stays h2 on the library and h3 inside
  the settings dialog) and landmarks around the study and review feeds.
- tests/contrast.mjs (new diagnostic): samples rendered pixels, because axe
  cannot judge text on blurred glass — it reports those nodes as incomplete.
  It skips disabled controls (1.4.3 exempts them) and content behind an open
  sheet. Result: no below-minimum text on any scanned screen.
- The report control exists in the homework guide too: under each "Try it
  yourself" exercise, labelled "Report exercise", without a skip (there is no
  queue to skip). lib/question-reports now takes deckId/deckTitle directly.
- The rail's two creation actions are buttons now (.nav-action) rather than
  quiet nav rows — once the library is full they were the only way to start
  something on desktop and read as just more navigation. "Make my homework"
  is "New homework" wherever it is an action (rail, empty state, share
  chooser, manifest shortcut); the page title and mode switch keep their
  wording.

Version 0.1.6 (three task bumps), SW -> freezmo-v52.
2026-10-12 21:15:56 +00:00
e4a8e0ba01 Phase 2: learning engine — history, SRS review, mistakes, stats, exam, reminders
Answer history and schedules
- Every answer is recorded (deck, activity, topic, correct/wrong, time)
  in a versioned IndexedDB log (freezmo-learning v1, stores answers +
  srs), mirrored in memory for synchronous React reads and capped at
  20k answers (oldest pruned). StudyFeed records as it grades.
- Light SM-2 schedule per activity: 1 day, 3 days, then interval x
  ease; wrong answers return in ten minutes with the ease nudged down.

Review, mistakes, stats
- Library 'Smart review' card: due count, mistakes count (latest
  answer wrong — clears itself when answered correctly), today's goal
  progress. Review sessions freeze their item list at start.
- New /review (due across decks, ?mistakes=1 global or ?deck= per
  deck) built on a shared SessionFeed with the study feed's snap/keyboard
  mechanics, wake lock and a results slide.
- New /stats: day streak, five-week calendar, accuracy per subject and
  per deck, weakest topics (>=3 answers), daily-goal progress.
- Daily goal configurable in Settings (10/20/30/50).

Exam mode
- New /exam: pick decks, question count, optional timer; no hints
  (a NoHints context hides hint rows and the self-check escape);
  results with score, per-deck and per-topic breakdown; wrong answers
  land in the mistakes set through the normal history.

Reminders (conditional)
- VAPID-gated: GET/POST/DELETE /api/push and POST /api/push/test with
  the standard route pattern, RATE_LIMIT_PUSH, zod, auth before body.
  Subscriptions stored server-side as endpoint + keys only (PUSH_DIR).
  UI hidden entirely without keys; iOS install note; service worker
  push/notificationclick handlers; scripts/send-reminders.mjs for a
  cron/systemd timer; web-push added as the one server dependency.

Verified: new phase-2 suite 42/42 (history/SRS shapes from a real study
run, mistakes clearing, review session, stats math, exam timer and
breakdowns, VAPID-less hidden state plus the configured
subscribe/validate/test/delete path against a second instance) plus
regression 74/74, mobile 52/52, wizard 80/80, declutter 116/116,
animation 8/8, native 35/35, phase1 38/38, i18n 25/25. Key parity
709/709. Lint + build clean. SW freezmo-v26.
2026-10-10 14:15:21 +00:00