R-1340 second producer: a restore_mixed hold's Why() names the cause from its record (found live on rc.1: the hub's Held apps line said off-site/database for a local restore with no database) — test red first

controller/internal/settings/settings.go

@@ -2051,7 +2051,7 @@ func (h RestoreHold) Why() string {
 		}
 		return "stopped by the box for a " + strings.ReplaceAll(kind, "_", " ") + " (" + h.At + ") — the household's Start gives it one more try"
 	case HoldReasonRestoreMixed:
-		return "held after an off-site restore failed its database replay (" + h.At + ") — clear the hold to start it"
+		return h.mixedWhy() + " (" + h.At + ") — clear the hold to start it"
 	case HoldReasonPutBackPending:
 		return "held until the pre-restore copy is poured back (" + h.At + ") — the put-back starts it"
 	default:
@@ -2059,6 +2059,36 @@ func (h RestoreHold) Why() string {
 	}
 }
 
+// mixedWhy (R-1340) names a restore_mixed hold from what its record carries — never „database" or „off-site" unless the
+// record says so. A record written before these fields („legacy") gets the neutral sentence. Pinned by
+// TestR1340_WhyNamesTheMixedCause.
+func (h RestoreHold) mixedWhy() string {
+	kind := "a restore"
+	switch h.RestoreKind {
+	case RestoreKindOffsite:
+		kind = "an off-site restore"
+	case RestoreKindLocal:
+		kind = "a local restore"
+	}
+	switch h.MixedCause {
+	case MixedCauseDefinitionWrite:
+		return "held after " + kind + " could not write its definition and writing the live definition back failed too"
+	case MixedCauseInterruptedPutBack:
+		return "held after a restore was interrupted and its live data could not be put back at the next start"
+	case MixedCausePutBack:
+		what := "failed"
+		if h.DBReplay {
+			what = "failed its database replay"
+		}
+		s := "held after " + kind + " " + what + " and putting the live data back failed"
+		if h.FailedStep != "" {
+			s += " (" + h.FailedStep + ")"
+		}
+		return s
+	}
+	return "held after a restore stopped half-way"
+}
+
 // SetRestoreHold records a hold. Modelled on SetDisconnected: a condition, plus what it is holding.
 func (s *Settings) SetRestoreHold(h RestoreHold) error {
 	s.mu.Lock()