[test] add unit tests for LLMAgent and ReasoningGraph components.

[doc] add initial documentation, ArcadeDB setup guide, unit tests, and debug/verification scripts.

[FT] Implement initial graph-based LLM reasoning pipeline with ArcadeDB integration and Streamlit frontend, including documentation and tests. Plug and play with `streamlit run src/frontend/app.py`

hotpotqa and arcadedb download

papers

kg-think repo download

Update README with LLM inference and meeting notes

Initial commit