Say where an answer no notification can give is given, and never offer to silence data loss

A "Needs you" with no button left the operator guessing where to act, and a click
could silence a condition that says data is gone. The place is named in the
glossary's word, the mesh MCP server (hq ADR 0258).

cmd/mesh-controller/plain_words.go

@@ -254,9 +254,10 @@ var plainWordings = map[string]func(conditions.Observation) words{
 	kindDataMissing: worded(func(o conditions.Observation) words {
 		what, _ := dataWords(o)
 		return words{Headline: conditions.Capital(what) + " is gone",
-			Needs:       "restore it from a backup, or silence this if you removed it.",
+			// No silence from a click: data loss is never waved away from a notification (ADR 0258).
+			Needs:       "restore it from a backup, or silence this " + FromMeshMCPServer,
 			Explanation: fmt.Sprintf("Where %s is kept on %s, nothing exists any more.", what, machineOr(o, "its machine")),
-			Resolved:    conditions.Capital(what) + " is back", Actions: []conditions.Action{conditions.SilenceAction(o.Key())}}
+			Resolved:    conditions.Capital(what) + " is back"}
 	}),
 	kindDataShrank: worded(func(o conditions.Observation) words {
 		what, _ := dataWords(o)
@@ -265,9 +266,10 @@ var plainWordings = map[string]func(conditions.Observation) words{
 			what = "a dataset"
 		}
 		return words{Headline: conditions.Capital(what) + " shrank on " + m,
-			Needs:       "if you meant it, silence this; if not, restore the last good copy from a backup.",
+			// No silence from a click: data loss is never waved away from a notification (ADR 0258).
+			Needs:       "restore the last good copy from a backup, or silence this " + FromMeshMCPServer,
 			Explanation: "More than half of what it held is gone within a week.",
-			Resolved:    "Resolved: the shrinking on " + m + " is explained", Actions: []conditions.Action{conditions.SilenceAction(o.Key())}}
+			Resolved:    "Resolved: the shrinking on " + m + " is explained"}
 	}),
 	kindDataQuiet: worded(func(o conditions.Observation) words {
 		what, _ := dataWords(o)
@@ -637,7 +639,7 @@ func walkWaitingWords(w waitFacts, in time.Duration, severity conditions.Severit
 // waitingNeeds is what the operator does about a walk waiting past its urgent bound: nothing before it.
 func waitingNeeds(severity conditions.Severity) string {
 	if severity == conditions.Urgent {
-		return "start it, or stop it."
+		return "start it, or stop it, " + FromMeshMCPServer
 	}
 	return ""
 }
@@ -656,11 +658,17 @@ func moduleNeeds(node string, rs []inventory.ResourceHealth) string {
 		}
 	}
 	if unit != "" {
-		return fmt.Sprintf("restart its service %s on %s; if it fails again, the details say why.", unit, node)
+		return fmt.Sprintf("restart its service %s on %s %s", unit, node, FromMeshMCPServer)
 	}
 	return ""
 }
 
+// FromMeshMCPServer ends what the operator needs when no notification can do it (ADR 0258), naming the mesh MCP
+// server (the glossary's word; "console" is retired): the answer is not an
+// acknowledgement, so it is given where the operator is known to be the one asking, until answers are
+// authorised (to-be 46 phases 5 and 6).
+const FromMeshMCPServer = "from the mesh MCP server; this notification cannot do it."
+
 // reloginNeeds is what an account waiting for its groups needs (ADR 0252).
 func reloginNeeds(node string) string {
 	return fmt.Sprintf("log out of every session on %s and log in again.", node)
@@ -684,11 +692,11 @@ func stalledWords(l stalledLine, o conditions.Observation) (headline, explanatio
 		// performs it (ADR 0258).
 		switch held {
 		case "held":
-			needs = "release it, or stop it."
+			needs = "release it, or stop it, " + FromMeshMCPServer
 		case "ready", "checked":
 			needs = "merge its pull request, or close it."
 		default:
-			needs = "stop it, or read the details to see what it waits for."
+			needs = "stop it " + FromMeshMCPServer
 		}
 	}
 	return fmt.Sprintf("Delivery of %s %s %s", name, held, long),