Two findings from the Codex review of the host-Docker changes:
1. Under-gated host target (security). Listing/actioning/log-reading the
CLUSEV HOST's containers only required `operate`, but the host is the
control-plane machine — a `Stop` on clusev-mariadb takes Clusev down —
and the host TERMINAL is already `manage-fleet`-only. Align it:
- effectiveTarget() resolves to the host only for manage-fleet users;
everyone else is pinned to a fleet server (no host default, no toggle).
- action()/viewLogs() and the ContainerLogs host sentinel (serverId 0)
now abort_unless manage-fleet.
A viewer/operator can no longer reach the host, even by forcing
target=host.
2. HostCredential::toServer() dropped a key passphrase equal to the string
"0" via a falsy `if ($this->passphrase)` check, which would break key
auth. Use an explicit null/'' check.
Added tests: non-admin never targets the host, a forced target=host still
hits a fleet server, operator cannot open host logs. 751 tests green.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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