fix: update Groq model to llama-3.1-8b-instant

fix: reduce context size for Groq token limit

feat: switch to free Groq + HuggingFace stack

improved ui

added styling

added styling

edited

added readme

added upload pdf section

added upload pdf section

fix langachain schema in app.py

updated app.py

fixed requiremnts.txt

Added Dev Container Folder

first commit