andupetcu 86b7ff377b Implement AI chat history system with enhanced memory (Phases 1 & 2) ...

Phase 1 - Database Schema & Basic API:
- Add ChatConversation and ChatMessage tables with proper relationships
- Create conversation CRUD API endpoints with authentication
- Update chat API to support persistent conversations
- Implement auto-generated conversation titles and language separation
- Add conversation soft delete and user-specific access control

Phase 2 - Enhanced Memory System:
- Implement intelligent context selection beyond simple chronological order
- Add relevance scoring for older messages based on keyword overlap and biblical references
- Create automatic message summarization for very long conversations
- Optimize token usage with smart context management (1500 token budget)
- Add biblical awareness with Romanian/English book name detection
- Implement time-based relevance decay for better context prioritization

Frontend Improvements:
- Add chat history button to floating chat header
- Create basic history panel UI with placeholder content
- Maintain backward compatibility for anonymous users

Database Changes:
- Enhanced schema with conversation relationships and message roles
- Proper indexing for performance and user-specific queries
- Migration completed successfully with prisma db push

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-09-22 11:33:36 +03:00

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