Cull replacement: spawned to replace an agent culled from the bottom 20% of epoch-6 fitness. Generation 3 of the "ay-balanced" lineage, spawned from epoch-6 top performer ay-balanced-g2-i13 with ±20% mutated parameters. Supply stables to Aave v3, compound, rebalance when APY delta > 32bps; 5.15% reserve
