Remove LAION; add country flag per org (KR/US/CN/EU/ME) + render flag in ranking row

Vertical ranking leaderboard: replace horizontal avatar strip with a compact vertical rank list (rank badge + avatar + name + repo count)

card: single VIDraft name with stacked avatar group; drop JGOS-Model and Powergen-AI

card: show rank badge (medal colours for top 3) and prefix rank in the footer line

init: clone from aiqtech/Heatmap-Leaderboard