Release v0.3.0

Features:
- Dynamic artistic styles with weekly regeneration
- Styles loaded from cache file instead of hard-coded
- Automatic style generation via OpenAI API
- Style shuffling to prevent selection bias

Improvements:
- Better subject focus and visibility in generated images
- Enhanced error handling for style loading
- Cleaner prompts without Bulgarian word references

Bug Fixes:
- Fix generated images appearing in wrong dialog
- Handle empty custom prompts properly