Update repository clone URL in README.md

Add comprehensive test suite for RAG Chat Assistant with error handling and validation

Enhance State management with improved error handling and logging, update QA structure to include sources, and refine message processing logic.

Implement core RAG functionality with error handling, memory management, and rate limiting

Enhance error handling with structured logging and improved user feedback

Add configuration settings for the RAG Chat Assistant

Update requirements.txt to align with latest dependency versions

Enhance README.md with development and testing guidelines, including test running instructions and performance optimization strategies

Add pytest configuration for coverage reporting

Update README.md to enhance clarity and structure, including feature highlights and setup instructions

Refactor handle_submit method to improve loading state management and error handling

Fix vector store initialization logic to ensure proper error handling when no documents are loaded

Refactor color definitions to include type annotations for improved clarity

Enhance RAG system initialization with progress updates, error handling, and retry logic

Enhance FAISS vector store creation with versioning, batch processing, and error handling