Add duplicate file detection; show skip message in UI

Fix CSS: pass to launch() for Gradio 6.0

Fix critical bugs: BM25 scoring, provider switch data loss, LLM timeouts, CSS

Update RAG system: universal document chatbot, Gemini support, fix dependencies

Fix Gradio launch error: moved css parameter

Update RAG system to v2.0 with Gemini support

Debug: add import error logging to diagnose startup crash

Fix: Groq key env var, DOCX labels, updated instructions

Add DOCX support + e5-small on HF Spaces for 5x faster indexing

Fix Gradio 5 file upload: handle str path and object, fix file_types

Fix Gradio 5 compatibility: move css to Blocks, remove unsupported launch args

Banking RAG system - initial deploy