Add branded OG banner (1200x630, Git LFS) at README top

Trilingual parity: full Notable divergences in ES+PT + trilingual data-dictionary intro

parse-colombia-wiki.mjs: all-equal guard só no 1º turno (runoff pode empatar) + pollster normalization in-parser. Output verified identical (170).

EVAL fixes: CITATION matchup (was Peru's), drop phantom candidate from dict, normalize pollster names, market-name guard

Colombia 2026 electoral divergence — polls (29 first-round/10 candidates) + Polymarket odds + divergence + docs