2062bd06f3
Adds a gen_seeds binary to solitaire_assetgen that brute-searches seeds for hands solvable in ≤250 moves, then writes the list. The 75 new seeds (0xCAFEBABE prefix) are appended to CHALLENGE_SEEDS in solitaire_data::challenge. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>