best_start_days (electional search) + README

match finder: best_matches over every birthday x every capital; capitals.json

the deployed edition-IV stack: geography + ArtaModel IV (greedy, fixed), grouped non-negative ranks; pure-Python predictor + ephemeris asset; public 0.64303

ArtaModel IV — genderless, even (|Δθ|), every pair in both orders, every long-term relationship; edition III kept below

ArtaModel: deployed 6-term boosted-split model (train+test), card, study, code