Remove unused fastapi/uvicorn deps and minor fixes

Fix README/code inconsistencies, remove unused BoundLLM

Render workflow diagram as PNG image instead of raw mermaid code

Update README.md

Update README.md

Use flash-lite for both models, remove demo subtitle

Remove model selector dropdown (Gemini-only deployment)

Fix: also patch _json_schema_to_python_type for boolean schema values

Fix: patch gradio_client.get_type to handle boolean JSON Schema values

Fix: bump sdk_version to 5.10.0, remove conflicting gradio pin from requirements

Fix: force gradio>=5.10.0 to fix gradio_client boolean schema bug

Set Gemini Flash as default model

Fix: add type='messages' to gr.Chatbot for gradio 5.x compatibility

Fix: patch HfFolder for huggingface_hub 0.27+ compatibility

Fix: bump gradio sdk to 5.3.0, remove gradio from requirements (HF manages it)

Fix: upgrade gradio to 5.x (HfFolder removed from huggingface_hub)

Fix: pin Python 3.11 for HF Space (audioop removed in 3.13)

Add HF Space metadata and root requirements.txt

Initial commit: LangGraph multi-agent car finance chatbot