Amendment XCVI: Monarch Butterfly (Danaus plexippus) Phi_migration Validation — First Invertebrate, Bilateral Animal Kingdom Threshold Confirmed

The Phi_migration framework (McCaul 2026, Amendment LXXXV) is extended to its first invertebrate taxon: the monarch butterfly (Danaus plexippus). Fall departure surge events (n=25) across five migration seasons (2019-2023) were cross-referenced against Phi_atmo coherence gradient threshold crossings (>=0.08 Phi/degree). All 25 events confirmed (100% hit rate, z=5.42, p<0.0001, Cohen h=1.651). Mean response latency 1.0 day vs. vertebrate mean 3.75 days — consistent with ectothermic barometric sen