Restructure quiz flow into QuizSession primitive + atomic quiz state in
LessonManager, and extract QuizQuestionView for split-view display.
Tab-safety fix: add lesson-tabs.ts with pickDefaultTab(), getAvailableTabs()
mirroring the exact {#if} conditions in +page.svelte, and ensureActiveTab()
safety-net that falls back to pickDefaultTab() when the desired tab is not
rendered. A reactive $effect in lesson/[slug]/+page.svelte validates
activeTab against lesson data on every change, preventing the "tab quiz
kosong" (empty workspace) regression for quiz-only lessons and phantom-tab
state after data changes.
Files:
- lib/services/lesson-tabs.ts (+test): pure helpers, 18 tests pass
- lesson/[slug]/+page.svelte: ensureActiveTab reactive guard + QuizQuestionView
- lesson/[slug]/lesson.svelte.ts: atomic startQuiz, getExitStatus, idempotent
submit on navigate/exit
- lib/services/quiz-session.ts (+test), lib/types/quiz.ts, QuizTab.svelte
(mgr-driven), QuizQuestionView.svelte, lesson.css
- services/lesson_service.py, services/tests/test_lesson_service_quiz.py
(test_lesson_service_quiz.py), requirements.txt (+pytest)
- docs/07-quiz-authoring.md
- version.ts APP_VERSION 21 -> 22 (forces SW update for the fix)
- examples/content/dasar/quiz_test.md synced to live content root
a2nr