New SOTA on ARC-AGI

- V1: 79.6%, $8.42/task - V2: 29.4%, $30.40/task

Custom submissions by @jerber888 and @_eric_pang_ are now the best known solutions to ARC-AGI

Both: * Are open source * Use Grok 4 * Implement program-synthesis outer loops with test-time adaptation

see https://news.ycombinator.com/item?id=45270649 for details and duscussions