Translate the rule sentences into Russian

#261 rebuilt the Sieve rule summaries and the recurrence descriptions as whole
sentences with placeholders, so that a translator can move the parts rather
than being handed " and " on its own. This is the Russian half of that.

32 strings and 9 plural forms. The ordinals are words -- there is no suffix to
append here, which was the point -- and the day and item lists are joined by
Intl.ListFormat rather than a translated separator.

web/src/locales/ru.ts

@@ -1257,8 +1257,54 @@ export const catalog: Catalog = {
     "This message was sent automatically, so no read receipt is offered.": "Это письмо отправлено автоматически, поэтому уведомление о прочтении не предлагается.",
     "This server will not hold a message longer than {span}.": "Этот сервер не удерживает письмо дольше чем {span}.",
     "Upload failed": "Не удалось загрузить",
+    // ── Third pass ──────────────────────────────────────────────────────
+    // Sentences that lib/ and store/ were building in English, and the two
+    // swipe labels that reach t() through a variable and so were invisible
+    // to a scan for t("literal"). See #259.
+    "Every {n} {frequency}": "Каждые {n} {frequency}",
+    "Monthly": "Ежемесячно",
+    "Monthly on day {days}": "Ежемесячно {days}-го числа",
+    "Monthly on the {ordinal} {weekday}": "Ежемесячно в {ordinal} {weekday}",
+    "Monthly on {weekday}": "Ежемесячно в {weekday}",
+    "Weekly": "Еженедельно",
+    "Weekly on {days}": "Еженедельно в {days}",
+    "add {flag}": "добавить {flag}",
+    "always": "всегда",
+    "body contains \"{value}\"": "текст содержит \"{value}\"",
+    "body does not contain \"{value}\"": "текст не содержит \"{value}\"",
+    "delete it": "удалить",
+    "fifth": "пятый",
+    "first": "первый",
+    "forward to {address}": "переслать на {address}",
+    "fourth": "четвёртый",
+    "keep it": "оставить",
+    "last": "последний",
+    "mark it read": "пометить прочитанным",
+    "move to {folder}": "переместить в {folder}",
+    "reject it": "отклонить",
+    "remove {flag}": "убрать {flag}",
+    "second": "второй",
+    "size is over {n} KB": "размер больше {n} КБ",
+    "size is under {n} KB": "размер меньше {n} КБ",
+    "star it": "отметить",
+    "stop": "остановить",
+    "third": "третий",
+    "{header} address {op} \"{value}\"": "адрес {header} {op} \"{value}\"",
+    "{header} {op} \"{value}\"": "{header} {op} \"{value}\"",
+    "{rule}, until {date}": "{rule}, до {date}",
+    "{tests} → {actions}": "{tests} → {actions}",
   },
   plurals: {
+    // ── Third pass ─────────────────────────────────────────────────────
+    "Every {n} days": { one: "Каждый день", few: "Каждые {n} дня", many: "Каждые {n} дней", other: "Каждые {n} дня" },
+    "Every {n} months": { one: "Каждый месяц", few: "Каждые {n} месяца", many: "Каждые {n} месяцев", other: "Каждые {n} месяца" },
+    "Every {n} months on day {days}": { one: "Каждый месяц {days}-го числа", few: "Каждые {n} месяца {days}-го числа", many: "Каждые {n} месяцев {days}-го числа", other: "Каждые {n} месяца {days}-го числа" },
+    "Every {n} months on the {ordinal} {weekday}": { one: "Каждый месяц в {ordinal} {weekday}", few: "Каждые {n} месяца в {ordinal} {weekday}", many: "Каждые {n} месяцев в {ordinal} {weekday}", other: "Каждые {n} месяца в {ordinal} {weekday}" },
+    "Every {n} months on {weekday}": { one: "Каждый месяц в {weekday}", few: "Каждые {n} месяца в {weekday}", many: "Каждые {n} месяцев в {weekday}", other: "Каждые {n} месяца в {weekday}" },
+    "Every {n} weeks": { one: "Каждую неделю", few: "Каждые {n} недели", many: "Каждые {n} недель", other: "Каждые {n} недели" },
+    "Every {n} weeks on {days}": { one: "Каждую неделю в {days}", few: "Каждые {n} недели в {days}", many: "Каждые {n} недель в {days}", other: "Каждые {n} недели в {days}" },
+    "Every {n} years": { one: "Каждый год", few: "Каждые {n} года", many: "Каждые {n} лет", other: "Каждые {n} года" },
+    "{rule}, {n} times": { one: "{rule}, {n} раз", few: "{rule}, {n} раза", many: "{rule}, {n} раз", other: "{rule}, {n} раза" },
     // ── Third pass ─────────────────────────────────────────────────────
     "Move {n} messages to Trash?": { one: "Переместить {n} письмо в корзину?", few: "Переместить {n} письма в корзину?", many: "Переместить {n} писем в корзину?", other: "Переместить {n} письма в корзину?" },
     "{n} days": { one: "{n} день", few: "{n} дня", many: "{n} дней", other: "{n} дня" },