The single-nic IP migration path was fragile and caused connectivity
issues during setup. macvlan is now the only bridge strategy — always
creates spx-ext-{nic} on the WAN NIC. Removed --single-nic flag,
SingleNIC config/detection fields, and updated all docs.
All 3 install guides (binary, multi-node, source) now end at the same
verification point: aws ec2 describe-instance-types. Installation is
complete when that command returns instance types.
New docs/setting-up-your-cluster/README.md is the common guide all 3
install paths point to. Covers: AMI import, SSH key creation, VPC with
public subnet (IGW + modify-subnet-attribute), instance launch with
public IP, SSH via public IP, instance lifecycle management.
Removed SSH-via-hostfwd from all guides — public subnet is the default
connectivity path. Private subnet documented as an alternative.
Ben Duncan