Let a module's log keep its entries for an age, so the hand-act log holds each act 400 days as ADR 0565 decides instead of refusing when full (issue 1953 S-age)

go/buscompose/buscompose_test.go

@@ -659,6 +659,11 @@ func healthChecks(t *testing.T) {
 			t.Errorf("%s writes the assigner's policies", u.Username())
 		}
 	}
+	// 1953 S-age (ADR 0565 §10): a log that says an age keeps its entries that long and no longer; one that says none, as
+	// long as the log (ADR 0297).
+	if aged, kept := (Log{Module: "mesh-hand-acts", Name: "acts", MaxAgeDays: 400}).Config(), (Log{Module: "m", Name: "l"}).Config(); aged.MaxAge != 400*24*time.Hour || kept.MaxAge != 0 || !aged.DenyDelete {
+		t.Errorf("an aged log's stream keeps %s, an unaged one %s", aged.MaxAge, kept.MaxAge)
+	}
 	// The tools account's secret is the module's own broker-<binary>, which its manifest's own-secrets names and the
 	// vault keeps by that name (AccountSecret).
 	if w := (WantedAccount{User: "a.nats.nats-tools", Kind: KindProcess, Node: "a", Module: "nats", Process: "nats-tools",