New feature: generate flashcards from PDF sections using AI, completely
separate from the existing quiz system.
Backend:
- FlashcardDeck + Flashcard models with cascade deletes
- flashcard_tag_links table for tag classification (reuses question_tags)
- /api/flashcards/ router: CRUD for decks, browse/search cards, tag filtering
- generate_flashcard_deck Celery task with chunked processing + progress
- FLASHCARD_PROMPT in extraction_modes.py (15 cards per chunk)
- "flashcard" added to admin model task types
Frontend:
- FlashcardsPage: deck grid + card browser with search/filter
- FlashcardStudyPage: flip cards, mark known/review, keyboard nav,
shuffle, progress bar, completion screen
- DocumentDetailPage: "Create Flashcards" button alongside "Extract Quiz"
- Navbar: Flashcards link
- AdminPage: flashcard in model task dropdown
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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