Open every explanation with what the operator needs to do, and offer the answers

The operator could not tell from a notification whether to act, and was told to
have an agent do it. Each condition now says "Nothing for you to do." or
"Needs you:" with one thing they can do themselves, and carries the actions the
operator channel performs when chosen (hq ADR 0253).

cmd/mesh-controller/delivery_conditions.go

@@ -113,7 +113,7 @@ func stalledObservations(lines []stalledLine) []conditions.Observation {
 		if l.operatorsOnly() {
 			o.Resolver = conditions.ResolverOperator
 		}
-		o.Headline, o.Explanation, o.Resolved = stalledWords(l, o)
+		o.Headline, o.Explanation, o.Resolved, o.Needs, o.Actions = stalledWords(l, o)
 		out = append(out, o)
 	}
 	return out