Connections
≈ Control Plane Hosts — register Postgres endpoints after they exist.
Step 1 — register Postgres 16+ endpoints (tested 16–18) and probe until healthy (need ≥2 for a cluster). PGX does not install Postgres — provision outside PGX, then attach here (see docs/ops/host-provisioning.md).
Next: add and probe connections until you have two healthy, unassigned ones, then create a cluster.