Grounded in Law: A Multi-Stage Anti-Hallucination Pipeline for Legal RAG Systems in Brazilian Portuguese. - Arla Figueiredo; João Lucas; Tatiana Ribeiro; Caio Nery; Alan Rios; Caio Hebert; Luiza Florentino; Arthur Silva; Ícaro Feyerabend; Pedro Vidal 002; Bruno Cabral (PROPOR (2), 2026)