D47 / R-1269 (P2): a new install never writes into an earlier install's backup — every install has an identity (install_id), the unit records it, every unit writer asks first; another install's unit is set aside whole (backups/set-aside/<app>/<stamp>, a D25 kept copy, „Visszaállítás” + „Eltávolítás” on the restore page); a move that fails refuses the write. Red-proved. Commit only.

controller/internal/web/i18n_cases_b_test.go

@@ -244,6 +244,17 @@ func i18nCasesB() []i18nCase {
 			d["KeptCopies"] = []keptCopyRow{{ID: "0123456789abcdef", Source: "csaladi_fotok", Line: "hdd_3", SizeHuman: "1.2 GB", Since: "2026-10-21T12:00:00Z"}}
 			return d
 		}},
+		// D47 (2026-10-25): a set-aside unit of an earlier install — the row with „Visszaállítás" (a NEW case, so no existing
+		// fixture changes).
+		{"backups_restore_kept_unit", "backups_restore", func() map[string]interface{} {
+			d := i18nLayoutData("backups-restore", "Visszaállítás a mentésből")
+			d["Backup"] = i18nBackupStatus(false, false)
+			d["OffboxConfigured"] = true
+			d["OffsiteStoreState"] = "known"
+			d["KeptCopies"] = []keptCopyRow{{ID: "fedcba9876543210", Source: "tandoor", Line: "belso", SizeHuman: "150 MB", Since: "2026-10-25T08:00:00Z", Restorable: true}}
+			d["KeptUnitRestorable"] = true
+			return d
+		}},
 		{"backups_restore_known_empty", "backups_restore", func() map[string]interface{} {
 			d := i18nLayoutData("backups-restore", "Visszaállítás a mentésből")
 			d["Backup"] = i18nBackupStatus(false, false)