Add detailed Product Requirements Document for FastAPI Multi-Agent + RAG Service

Update README to clarify `TOP_K`/`FETCH_K` settings and enhance explanation of history-aware query rewriting

Add beginner-friendly explanation of RAG pipeline with detailed steps for data ingestion, preparation, embedding, search, and answer generation

Enhance README with bold formatting for clarity in RAG techniques and evaluation metrics

Add history-aware query rewriting and groundedness scoring to RAG agent

Revise README for clarity and structure; enhance Quick Start and Environment Variables sections

Enhance README with detailed RAG techniques and ingestion sequences; update agentic flow chart for clarity

Enhance README with detailed Multi-Agent Chat flow and request processing diagrams

Add Multi-Agent Chat flow diagram to README

feat: Refactor chat_rag endpoint and service logic; centralize client creation and enhance routing for SQL, rag, and general queries

feat: Add document ingestion and embedding functionality

fix: update agent in flow chart for SQL path prompt formatting

fix: remove redundant line in flow chart for SQL path processes

fix: update agent names in flow chart for clarity in SQL path processes

fix: update agent assignments in flow chart for clarity in SQL and General paths

fix: update flow chart to streamline SQL and General path processes

fix: reorder steps in flow chart to correct SQL result handling and horizontal bar chart generation

fix: update flow chart to include horizontal bar chart generation from SQL results

fix: update flow chart to correct module paths for SQL and General routes

fix: update chat flow chart to clarify end steps for SQL and General paths

fix: update chat flow chart to clarify SQL and General paths for improved understanding of agentic process

fix: enhance chat flow chart by adding 'Next Step(s)' column for improved clarity of agentic process

fix: remove unnecessary markdown code block for chat flow chart to enhance clarity

fix: update chat flow chart to markdown table format for improved clarity and compatibility

fix: improve formatting in chat flow chart for better readability and clarity

fix: improve formatting in chat flow chart for better clarity and consistency

fix: improve formatting in chat flow chart for clarity and consistency

fix: improve formatting in chat flow chart for better readability

feat: update README with detailed chat flow chart and enhance tools module structure

feat: update README for clarity and enhance local development instructions

feat: refactor chat flow and enhance OpenAI response handling for brevity

feat: enhance chat functionality with OpenAI integration and message validation

feat: add FastAPI route for digit prediction using a feedforward neural network

fix: update model URLs in iris and movie recommender routes

Add sentiment analysis and various ML model routes; update README and requirements

Add FastAPI app for sentiment analysis with health check endpoint and Docker support

initial commit