Say a re-apply whose result changed, refuse whole when the package manager is not there, and install the packages in the apply that made it answer (issue 233 review)

internal/link/messages.go

@@ -229,6 +229,11 @@ type Report struct {
 	// as "not known", never as healthy and never as a reason to raise anything. Fresh on every report
 	// this engine makes, and said between reports on HealthSubject when it changes.
 	Health *Health `json:"health,omitempty"`
+
+	// Unapplied is which declared resources this apply did not apply, by id — failed or not attempted. Not
+	// said on the wire (Failed says why, in words): it is what makes a reconcile whose result changed news to
+	// the node-engine, a failure that moved to another resource included (novox/hq issue 233).
+	Unapplied []string `json:"-"`
 }
 
 // LivenessContract is the version of the health statement this host keeps (ADR 0240 Phase A: liveness,