Word a delivery that needs its author's new head as its author's, with no Stop (ADR 0505 §5)

cmd/mesh-controller/plain_words.go

@@ -966,6 +966,9 @@ func stalledWords(l stalledLine, o conditions.Observation) (headline, explanatio
 	if l.State == "unanswered" {
 		return unansweredWords(l, o)
 	}
+	if l.Needs == needsNewHead {
+		return newHeadWords(l, name)
+	}
 	held := l.State
 	if held == "" {
 		held = "held"
@@ -999,6 +1002,29 @@ func stalledWords(l stalledLine, o conditions.Observation) (headline, explanatio
 		fmt.Sprintf("Delivery of %s is no longer %s", name, held), needs, actions
 }
 
+// newHeadWords are the words of a delivery whose cure is its author's new head (novox/hq ADR 0505 §5): it names the
+// author and says a new head is needed; it offers no Stop and never calls it the operator's, because the operator
+// hears of it only once the author's own watch has failed, after two hours with no new head.
+func newHeadWords(l stalledLine, name string) (headline, explanation, resolved, needs string, actions []conditions.Action) {
+	pull := "A pull request of " + name
+	if l.Number > 0 {
+		pull = fmt.Sprintf("Pull request %d of %s", l.Number, name)
+	}
+	author := l.Author
+	if _, plain := conditions.Plain(author); !plain {
+		author = "its author" // a branch named in code (a dotted name, a number) is not said
+	}
+	long := "for a long time"
+	if d, err := time.ParseDuration(l.For); err == nil {
+		long = "for " + humanDuration(d)
+	}
+	return pull + " needs a new head from its author",
+		fmt.Sprintf("%s cannot merge until %s pushes a new head: its check failed after its Approve, and no new head "+
+			"came %s.", pull, author, long),
+		pull + " has a new head, or is closed",
+		"ask " + author + " for a new head.", nil
+}
+
 // stoppedNeeds is what ends a delivery that is already stopped, from the stalled line's healer words ("none: a
 // merge that delivers its modules ends it — the operator's"): the part that says what ends it.
 func stoppedNeeds(l stalledLine) string {