uebelack / babeli / 26331749447

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✨ feat: add AI-powered translation service with chat model integration

Add core translation service infrastructure with AI chat model support:

- Add TranslationService with similarity-based translation matching using Jaro-Winkler algorithm
- Implement ChatModelFactory with provider registration system for flexible AI model integration
- Add Configuration interface for model provider settings (provider, model, apiKey, apiUrl)
- Implement ConfigurationError for better error handling
- Add JaroWinklerSimilarity utility for finding similar translations
- Include comprehensive test coverage for new components
- Add @langchain/core dependency for chat model integration
- Export new modules (ai, errors, services, util) from core package

The translation service finds similar existing translations to provide context
to the AI model, improving translation quality and consistency.

144 of 144 new or added lines in 4 files covered. (100.0%)

249 of 249 relevant lines covered (100.0%)

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