v0.306.0: R-570 — the off-site note decides on its kind only; the pre-0.251.0 text fallback is deleted

Fleet condition read on each box's settings.json 2026-10-10 (offbox.last_success ~02:16Z on 0.304.0).
Red-proof: the new no-kind row of TestR553_StaleNoteDecisionSurvivesWordingChange failed against the fallback.

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

controller/internal/backup/offbox.go

@@ -1186,9 +1186,9 @@ func (m *Manager) runOffboxBackup(ctx context.Context, withProgress bool) error
 			// must not be told "nothing is selected".
 			// R-240: the sentence no longer opens with „Sikeres" — a run that covered nothing was
 			// congratulating the household on it. The verdict stays `ok` (an unconfigured selection is
-			// not a failure). Still a Hungarian LITERAL and still carrying the lowercase marker
-			// „nincs mentésre jelölt alkalmazás" (R-570: boxes with the older persisted text are
-			// recognised by those words). Pinned by TestR240_ZeroSelectionRunDoesNotSaySuccess.
+			// not a failure). Still a Hungarian LITERAL; since R-570 closed (2026-10-10) no reader depends
+			// on its words — the page decides on warnKind — so localisation may translate it.
+			// Pinned by TestR240_ZeroSelectionRunDoesNotSaySuccess.
 			if len(apps) == 0 && !runResult.sharesBackedUp {
 				warns = append(warns, "Ez a futás semmit nem mentett: nincs mentésre jelölt alkalmazás")
 				warnKind = OffboxWarnNoAppsSelected // R-553: the page reads this, not the sentence