- Добавлена поддержка персональных AI моделей для каждого пользователя
- Оптимизация создания заданий: батч-запрос к AI вместо N запросов
- Фильтрация слов по языку изучения (source_lang) в словаре
- Удалены неиспользуемые колонки examples и category из vocabulary
- Миграции для ai_model_id и удаления колонок
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Добавлена поддержка нескольких AI провайдеров (OpenAI, Google Gemini)
- Добавлена админ-панель (/admin) для переключения AI моделей
- Добавлен AIModelService для управления моделями в БД
- Добавлен выбор типа заданий (микс, перевод слов, подстановка, перевод предложений)
- Добавлена настройка количества заданий (5-15)
- ai_service динамически выбирает провайдера на основе активной модели
- Обработка ограничений моделей (temperature, response_format)
- Очистка markdown обёртки из ответов Gemini
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add separate translation_language setting (independent from interface language)
- Implement 3-step onboarding for new users:
1. Choose interface language
2. Choose learning language
3. Choose translation language
- Fix localization issues when using callback.message (user_id from state)
- Add UserService.get_user_by_id() method
- Add get_user_translation_lang() helper in i18n
- Update all handlers to use correct translation language
- Add localization keys for onboarding (ru/en/ja)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add WordTranslation model for storing multiple translations per word
- AI generates translations with example sentences and their translations
- Show example usage after answering tasks (learning + interface language)
- Save translations to word_translations table when adding words from tasks
- Improve word exclusion in new_words mode (stronger prompt + client filtering)
- Add migration for word_translations table
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Consolidate "Add word" menu with submenu (Manual, Thematic, Import)
- Add file import support (.txt, .md) with AI batch translation
- Add vocabulary pagination with navigation buttons
- Add "Add word" button in tasks for new words mode
- Fix undefined variables bug in vocabulary confirm handler
- Add localization keys for add_menu in ru/en/ja
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add separate level systems: CEFR (A1-C2) for European languages, JLPT (N5-N1) for Japanese
- Store levels per language in new `levels_by_language` JSON field
- Add custom scenario option in AI practice mode
- Show action buttons after practice ends (new dialogue, tasks, words)
- Fix level display across all handlers to use correct level system
- Add Alembic migration for levels_by_language field
- Update all locale files (ru, en, ja) with new keys
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
