nx_corroborate.nx

nx_corroborate.nx -- cross-source corroboration over the HARVESTED corpus (the research-rigor step that makes a fact trustworthy). A claim is only CONFIRMED when >=2 independent sources report the SAME value; if sources report CONFLICTING values it is CONTESTED -- and the team flags it for the Critic/operator rather than silently picking one (the honest discipline). This grounds the deep- research VERIFY stage in the team's OWN fetched+mirrored library instead of hand-fed claims, and it is REPRODUCIBLE: same corpus -> same verdict, which a one-shot LLM vote cannot guarantee. Honest boundary: independence = distinct mirrored sources; detecting same-origin/syndicated copies (true independence) is a deeper rung, flagged not faked. license_tier: ORIGINAL Pairs with nx_research_extract (re_stat_after pulls the value a source reports for a claim key) and nx_library_cache (the corpus is the mirrored library).