fix: remove local hf_models copy, let model download on startup

fix: add HuggingFace Spaces configuration header

docs: replace roadmap with Future Work section

docs: final README with full feature list and quick start

Docker containerization with baked HuggingFace model cache

improve chat UI, fix score bars, lower rerank threshold

Vietnamese tokenization, query rewriting, RAGAS evaluation

Vietnamese tokenization, query rewriting, RAGAS evaluation

Vietnamese tokenization (underthesea) + query rewriting

Week 4: reranking + citation - bge-reranker-v2-m3, inline citations

docs: improve roadmap table for portfolio

docs: update README

hybrid search - Qdrant + BM25 + RRF, switch LLM to Groq

two-tier parsing - pypdf for PDF, EasyOCR for images, structure-aware chunking

Week 1: minimal RAG pipeline - loader, chunker, embedder, vector store, CLI

Initial project setup: gitignore, README, requirements