chore: Update project state - CRUD operations fully implemented and tested

feat: Implement complete CRUD operations for chat history

feat: Add sources field to ChatResponse and include in API

fix: Only show RAG sources when knowledge base was actually used

feat: Implement Phase 1 & 2 improvements - Advanced RL and Enhanced RAG

feat: Update project with Thinking UI, Security modules, and RL enhancements

docs: Update README with agents, RAG, RL, skills, and security details

fix: Move re import to top level for better performance

fix: Improve filtering of internal reasoning patterns

fix: Filter out reasoning content and tool execution details from streaming

fix: Add CSS styling for source identifier badges

fix: Improve streaming with status updates and source identifiers

fix: Properly handle Agno RunContentEvent objects in streaming

fix: Improve streaming and markdown rendering

fix: Improve markdown/rich text rendering