Say a build handed out again restarted, in its log, the queue and the check's verdict

A build agent replaced mid-build leaves its ask to be handed out again, and
the second run looked like a first: the queue and the pull request showed
nothing of the 5-8 minutes lost (novox/hq issue 594).

cmd/mesh-controller/checks.go

@@ -429,6 +429,19 @@ func checkedOf(result link.BuildResult) link.Checked {
 			l.Verdict = "error"
 		}
 	}
+	// **A check run again says so on every layer** (novox/hq issue 594): the summaries are the lines the
+	// pull request shows, and a verdict from a second run — an earlier build agent replaced mid-check —
+	// must not read as the first. Copies, so the build's own outcome is left as it came.
+	if said := link.Restarted(result.Delivery); said != "" {
+		c.Summary = said + "; " + c.Summary
+		for _, l := range []**link.CheckLayer{&c.Gate, &c.RepoCheck} {
+			if *l != nil {
+				layer := **l
+				layer.Summary = said + "; " + layer.Summary
+				*l = &layer
+			}
+		}
+	}
 	if len(c.Report) > maxCheckReport {
 		c.Report = "…" + c.Report[len(c.Report)-maxCheckReport:]
 	}