Report a provider that keeps failing a consumer in status (hq ADR 0224)

The identity provider failed every consumer for a day and status called the
mesh well (hq issue 179). The controller now follows every provider's
provisioner.failing/recovered, keeps the newest failing word per provider,
machine and consumer (migration 0065), and status, its JSON and node show
name it until it recovers. Every module that receives contributions is
granted the two events, so no manifest can forget them.

cmd/mesh-controller/nodes.go

@@ -505,6 +505,19 @@ func showNode(ctx context.Context, inv *inventory.Inventory, name string) error
 		fmt.Printf("  public domain     %s\n", domain)
 	}
 
+	// A provider here failing a consumer, or a consumer here failed (novox/hq ADR 0224). Before the
+	// capabilities, because it is something not working now and they are a description.
+	failing, err := failingProviders(ctx, inv)
+	if err != nil {
+		return err
+	}
+	if here := failingOn(failing, name); len(here) > 0 {
+		fmt.Printf("\n  %d consumer(s) a provider keeps failing, here or for a module here:\n", len(here))
+		for _, line := range failingLines(here, time.Now()) {
+			fmt.Printf("  %s\n", line)
+		}
+	}
+
 	held, err := inv.Profile(ctx, name)
 	if err != nil {
 		return err