Add Knowledge Base Versioning layer with full UI tab

Add Self-Healing RAG layer with full UI integration

Improve README: badges, pipeline diagram, full tech stack table, HF demo link

Update README.md

Add Dockerfile for Hugging Face Docker Space (port 7860)

Add LLM backend guard: show clear error when Groq key missing on HF

AdaptiveRAG: Agentic + Self-RAG + Modular RAG pipeline with visual UI

initial commit