Backoffice stage 5: products, broadcasts, activity log, settings

- Products: services with full setup — content (name, description, extras names
  in 5 languages via text overrides), price tiers and extras, booking window,
  late-cancel fee, on/off, checklist; category discounts by membership level;
  membership plan prices; promo codes; relocation steps and documents.
- Text overrides: TextOverride table on top of the i18n files; API, bots and the
  worker reload them every minute, mini apps fetch public.texts at start.
- Promo codes applied to orders (admin new-order form and client API): not
  stacked with membership discount — the larger wins; once per client; validity,
  limit and categories.
- Broadcasts to the client bot by any client filter, per-language texts with
  Russian fallback, test to yourself, ~25 msg/s, per-recipient status, resume after
  worker restart, history with progress and stop.
- Activity log (who/when/what, filters, details) and Settings page with all
  owner settings grouped, plus payment methods.
- Tests for promo codes and text overrides.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

packages/web/src/i18n.tsx

@@ -1,5 +1,5 @@
 import { createContext, useContext, useEffect, useMemo, useState, type ReactNode } from 'react';
-import { createT, formatAmd, formatDateTime, isLocale, type Locale, type TFunction } from '@barev/i18n';
+import { createT, formatAmd, formatDateTime, isLocale, onTextOverrides, setTextOverrides, textOverridesVersion, type Locale, type TFunction } from '@barev/i18n';
 import { reportClientError } from './telegram.ts';
 
 interface I18nValue {
@@ -26,6 +26,12 @@ export function I18nProvider({ initial, children }: { initial: Locale; children:
   useEffect(() => {
     document.documentElement.lang = locale;
   }, [locale]);
+  // тексты из админки подгрузились — перерисовать
+  const [version, setVersion] = useState(textOverridesVersion());
+  useEffect(() => {
+    const off = onTextOverrides(() => setVersion(textOverridesVersion()));
+    return () => void off();
+  }, []);
   const value = useMemo<I18nValue>(
     () => ({
       locale,
@@ -34,7 +40,8 @@ export function I18nProvider({ initial, children }: { initial: Locale; children:
       amd: (n) => formatAmd(locale, n),
       dt: (d, opts) => formatDateTime(locale, d, opts),
     }),
-    [locale],
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    [locale, version],
   );
   return <Ctx.Provider value={value}>{children}</Ctx.Provider>;
 }
@@ -56,3 +63,16 @@ export function errorText(t: TFunction, err: unknown): string {
   }
   return t('errors.generic');
 }
+
+/** Тексты, изменённые в админке (названия и описания услуг и т.п.) — подгрузить с API при старте Mini App */
+export async function loadTextOverrides(url = '/trpc/public.texts') {
+  try {
+    const res = await fetch(url);
+    if (!res.ok) return;
+    const body = (await res.json()) as { result?: { data?: { json?: { key: string; locale: string; value: string }[] } } };
+    const rows = body.result?.data?.json;
+    if (rows) setTextOverrides(rows);
+  } catch {
+    // нет сети — остаются стандартные тексты
+  }
+}