fix: pre-download embedding model at build time

fix: set python 3.11

fix: deployment fixes - cors, host, env url, render config

Updated RAG pipeline, fixed loader bug, backend + frontend working

Revise README for improved clarity and structure

Txt file option added

Merge branch 'main' of https://github.com/Kashyap-Ladva/DocuMindAI

Add React frontend with chat UI, PDF upload, and source panel components

Commit

Update README.md

Update README.md

Initial commit: DocuMind AI RAG application