Six integration playbooks (integration-preflight, onboard-host,
integrate-service, ephemeral-lifecycle, add-watchdog, finish-migration)
plus the F1-F11 failure catalog, distilled from the 2026-07-21
k3s-over-ZeroTier connectivity research (oleks/cluster wiki:
K3s-over-ZeroTier-Connectivity). Failure classes over current facts;
live sources of truth over restated values.
Oleks