hub: controller_unresponsive_restart (R-1344 restart, agent >= 0.171.0) — one mail per restart, not also controller_restarted_by_agent; the unresponsive alarm text says what the agent will do

hub/internal/api/controller_supervisor_event_test.go

@@ -10,7 +10,7 @@ import (
 // allowlisted (the project's single register of legitimate types) AND operator-only (a missing
 // customerMessages entry is not a block — the v0.78.0 defect).
 func TestControllerSupervisorEventsAreAllowlistedAndOperatorOnly(t *testing.T) {
-	for _, et := range []string{"controller_restarted_by_agent", "controller_crashloop"} {
+	for _, et := range []string{"controller_restarted_by_agent", "controller_crashloop", "controller_unresponsive", "controller_unresponsive_restart"} {
 		if !allowedEventTypes[et] {
 			t.Fatalf("%s must be in allowedEventTypes (R-77: an unregistered type is an inert seam)", et)
 		}