feat: real LangGraph StateGraph with 10 nodes and conditional edges

fix: handle 'no insurance' and other negations deterministically

feat: chatbot answers questions about feature options instead of looping

fix: remove show_copy_button param deprecated in Gradio 6

fix: remove deprecated type param from Chatbot for Gradio 6

feat: conversational chatbot interface with risk modifiers

fix: add server_name and disable SSR for HF Spaces

style: dark monochrome theme with JetBrains Mono

feat: Milestone 2 — Agentic AI Fleet Management Assistant

Sync app.py with cleaned project structure

Use pre-trained model: load from joblib instead of training on startup

Add requirements.txt, pipeline module, and dataset for HF Space

Upload folder using huggingface_hub

initial commit