fix: graceful fallback when colpali_engine not installed

fix: rebuild BM25 index from Qdrant if pkl not found

fix: download bm25_index.pkl from HF repo at build time

fix: remove bm25_index.pkl COPY from Dockerfile (uploaded via HF API)

feat: add compare pipeline tab + has_context badge in UI

docs: add key results to intro, add GitHub link

chore: track pkl files with git lfs

ui: update sample questions to financial report queries

feat: contextual retrieval eval + update README results table

feat: contextual retrieval with llama-3.1-8b-instant, Recall 0.40→0.72

docs: chuyển README sang tiếng Việt

feat: add ColPali eval script + update comparison results in README

docs: update README with ColPali comparison, eval results, architecture

feat: add ColPali visual retrieval + contextual retrieval + PDF eval

feat: dark mode, mobile responsive, copy button, skeleton loader, sample questions

docs: add live demo link and architecture decisions

fix: add nginx buffer flush padding for SSE on HF Spaces

fix: async SSE generator with blinking cursor for streaming

feat: streaming response via SSE with token-by-token display

fix: add python-multipart for file upload

feat: PDF upload with drag & drop, ephemeral in-memory search

perf: preload reranker model at startup

fix: remove *.pkl from dockerignore

fix: explicit bm25 copy path to bust cache

fix: allow bm25_index.pkl in Docker build

fix: copy bm25_index.pkl into Docker image

fix: commit bm25_index.pkl for HF Spaces deployment

debug: print QDRANT_URL

remove debug log

debug: print GROQ key prefix in logs

fix: strip whitespace from API keys

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