Security: Replace API keys with placeholders in .env.example

Merge feature/production-upgrade: HF Spaces deployment with modern UI

Overhaul Gradio UI with modern medical design

Fix: Dynamic API key loading - secrets now work properly on HuggingFace Spaces

Fix HF deployment: add langchain-text-splitters, langchain-huggingface, simplify env

Deploy to HuggingFace Spaces - Medical RAG with vector store

feat: production upgrade — agentic RAG, OpenSearch, Redis, Langfuse, Docker, Gradio, Telegram

Refactor: Improve code quality, security, and configuration

docs: update all documentation to reflect current codebase state

Remove GITHUB_READY.md from repository

refactor: major repository cleanup and bug fixes

The Context is Here

Initial commit