External AI Support
- Use your own API key to generate flashcards and quizzes with external AI providers including OpenAI, Anthropic (Claude), and any OpenAI-compatible service
- Choose between On-Device AI (Apple Intelligence) and External API in Settings
- Endpoint URL, model name, and API provider are all configurable
- API keys are stored securely in the device Keychain

Smarter Quizzes
- AI-generated quiz distractors are now more challenging and topic-aware, drawing from your study material to create plausible wrong answers
- Batch quiz generation processes all questions in a single request for faster results
- Improved fallback logic ensures quizzes are always generated, even when AI is unavailable

Reliability & Stability
- Fixed crashes when opening Settings and importing documents
- Settings now persist between app sessions
- Improved error handling and input sanitization

Design
- Refreshed quiz question interface with cleaner styling