Strip markdown emphasis from claims before verification and abstention check

Fix abstention detection (word order + citation debris); clean stripped-citation artifacts

Add abstention detection and abbreviation-safe sentence splitting

Use ministral-8b for generation; add fallback chain and graceful degradation

Satisfy ZeroGPU startup check with unused GPU probe; run pipeline on CPU

CPU-only: remove ZeroGPU dependency

Add arXiv corpus

Verified Research RAG demo

initial commit