Fix README short_description length for HuggingFace validation

Switch LLM backend from Anthropic to Gemini 2.0 Flash (free tier)

Fix SyntaxError in notebook: replace unicode f-string with string concatenation

Add Dockerfile for HuggingFace Spaces (Docker SDK)

Add HuggingFace Spaces config and API key sidebar input

Add Jupyter notebook version of AI data chatbot

Add AI chatbot for data visualization and table generation

Initial commit