- Add §1 Device model (7050SX3-48YC12, prod vs clab port layouts) - Rework §2 topology: 2-4 spines, limits derived from hardware - §6 IPAM: only supernets fixed, all else delegated to Infrahub resource manager - §7 BGP: maximum-paths = N_spines×2, add bgp log-neighbor-changes - §9 VXLAN: RD/RT use L3_VNI, add VNI pool names and identifiers Refs: #31