R-585: the last customer-facing producers follow the household's language

backup_integrity_ok / backup_integrity_failed now take facts and push bundle
keys (Hungarian bytes unchanged - go-parity, pinned verbatim by
TestR585_IntegrityHungarianIsUnchanged). The interrupted-operation alert
(backup_failed, customer-enabled by default) used to send the operator's
ENGLISH sentence to every household; NotifyInterruptedOperation composes it
per language, the English byte-identical to the operator's log line. The
now-callerless NotifyBackupFailed is removed. local_api_endpoint_drift is
operator-only (no customer toggle) and already English by design - not
changed.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/cmd/controller/r359_wiring_test.go

@@ -5,6 +5,8 @@ import (
 	"go/parser"
 	"go/token"
 	"testing"
+
+	"gitea.dooplex.hu/admin/felhom-controller/internal/i18n"
 )
 
 // R-359 — the scheduled job must be PROVEN WIRED.
@@ -87,16 +89,33 @@ func TestR359_DebugCallbackIsWired(t *testing.T) {
 
 func TestR359_OutcomeMessagesCarryNoMachineDetail(t *testing.T) {
 	// The customer gets a sentence; restic's words go to the log. R-379: 615 bytes of raw database
-	// text reached a customer once.
-	for _, bad := range []string{"sftp:", "restic", "exit status", "@", "/srv/"} {
-		if contains(integrityFailedMsg, bad) {
-			t.Errorf("the failure sentence carries machine detail %q: %q", bad, integrityFailedMsg)
-		}
+	// text reached a customer once. R-585: the sentence is a bundle key now, so BOTH languages are
+	// held to it — an English household must be told what not to do just as plainly.
+	b, err := i18n.Shared()
+	if err != nil {
+		t.Fatal(err)
 	}
-	// It must still tell them what to do — and what NOT to do.
-	for _, want := range []string{"Ne törölj semmit", "vedd fel velünk a kapcsolatot"} {
-		if !contains(integrityFailedMsg, want) {
-			t.Errorf("the failure sentence is a dead end; missing %q", want)
+	for _, tc := range []struct {
+		lang  string
+		wants []string
+	}{
+		{"hu", []string{"Ne törölj semmit", "vedd fel velünk a kapcsolatot"}},
+		{"en", []string{"Do not delete anything", "contact us"}},
+	} {
+		msg, fellBack, ok := b.Text(tc.lang, "event.backup_integrity_failed")
+		if !ok || fellBack {
+			t.Fatalf("%s: event.backup_integrity_failed is missing (ok=%v fellBack=%v)", tc.lang, ok, fellBack)
+		}
+		for _, bad := range []string{"sftp:", "restic", "exit status", "@", "/srv/"} {
+			if contains(msg, bad) {
+				t.Errorf("%s: the failure sentence carries machine detail %q: %q", tc.lang, bad, msg)
+			}
+		}
+		// It must still tell them what to do — and what NOT to do.
+		for _, want := range tc.wants {
+			if !contains(msg, want) {
+				t.Errorf("%s: the failure sentence is a dead end; missing %q", tc.lang, want)
+			}
 		}
 	}
 }