Testes + refactor

LLMExplainer llama3 cu fallback static + integrare orchestrator

Add internal validation rules and expand external Wikidata checks

Enhance spacy facts coverage and refine llm logging

Move dependencies.py up in folder

Add full system test before start work on frontend

Add test notebooks (sprint3 + SPARQL verification) + main.py

Add end-to-end Sprint 2 pipeline test with consistent vs inconsistent articles

Add exploration notebook — spaCy NER + temporal parser test

Sprint 1: project structure