Hold a leaf delivery to three minutes (hq ADR 0304 decision 4, issue 525)

ADR 0304 lowered a leaf module's delivery budget from five minutes to
three, the time its measured phases support once a leaf is judged on
one reading and waits only for what it shares.

cmd/mesh-controller/over_budget_test.go

@@ -10,11 +10,12 @@ import (
 	"github.com/novox/mesh-controller/internal/inventory"
 )
 
-// A leaf delivery of 5 minutes 10 seconds raises delivery.leaf.over-budget naming its longest phase; one of
-// exactly five minutes, a core one of nine and a class without a budget raise nothing (ADR 0282 decision 7).
+// A leaf delivery of 3 minutes 10 seconds raises delivery.leaf.over-budget naming its longest phase; one of
+// exactly three minutes, a core one of nine and a class without a budget raise nothing (ADR 0282 decision 7,
+// the leaf's budget as ADR 0304 decision 4 changed it).
 func TestADeliveryOverItsBudgetIsLoud(t *testing.T) {
 	a := &timesAnswer{Classes: []timesClass{
-		{Class: inventory.ClassLeaf, Latest: &timesLatest{ID: "novox/mesh-catalog@abc", TookMS: (5*time.Minute + 10*time.Second).Milliseconds(),
+		{Class: inventory.ClassLeaf, Latest: &timesLatest{ID: "novox/mesh-catalog@abc", TookMS: (3*time.Minute + 10*time.Second).Milliseconds(),
 			Longest: "judgement 2m40s"}},
 		{Class: inventory.ClassCore, Latest: &timesLatest{ID: "novox/mesh-controller@def", TookMS: (9 * time.Minute).Milliseconds(),
 			Longest: "build 1m"}},
@@ -30,7 +31,7 @@ func TestADeliveryOverItsBudgetIsLoud(t *testing.T) {
 		t.Fatalf("the condition names its delivery and longest phase: %s — %s", o.Key(), o.Summary)
 	}
 	// The next leaf delivery within its budget clears it: the probe raises nothing for the class.
-	a.Classes[0].Latest = &timesLatest{ID: "novox/mesh-catalog@ghi", TookMS: (5 * time.Minute).Milliseconds()}
+	a.Classes[0].Latest = &timesLatest{ID: "novox/mesh-catalog@ghi", TookMS: (3 * time.Minute).Milliseconds()}
 	if obs := overBudgetObservations(a); len(obs) != 0 {
 		t.Fatalf("a delivery of exactly its budget is within it: %+v", obs)
 	}