### Changes:
- Updated README.md:
- Refined the project description to highlight its lightweight and powerful nature.
- Enhanced feature list, replacing outdated entries with modern updates (e.g., TensorFlow integration replacing LLM creation).
- Included detailed installation and usage instructions for TensorFlow.js support and embedding workflows.
- Added "Usage Options" section to define different import methods and supported environments.
- Expanded "Backup and Restore" details, showcasing CLI and scripting examples.
- Introduced optimized HNSW indexing for large datasets.
- Replaced examples with a unified and simplified demonstration approach.
- Embedded advanced build and environment-specific configurations for better clarity.
- Removed outdated content related to language model generation, including LLM-related commands and examples.
- Added README.demo.md with full instructions for running the interactive demo.
### Purpose:
This update modernizes the documentation and focuses on Brainy’s current capabilities, simplifying onboarding for new users while removing deprecated features. It also streamlines project understanding, enabling developers to better utilize its features in diverse environments.