I18n: Add Russian support (based on DrMaks22 PR)

README.md

@@ -230,7 +230,17 @@ First contribution checklist:
 
 Translated READMEs: [`translated_readmes/`](./translated_readmes/README.md), available in English, 简体中文, 繁體中文, 日本語.
 
-The App is available in the following languages: English (`en`), Japanese (`ja`), Simplified Chinese (`zh`), Vietnamese (`vi`), Brazilian Portuguese (`pt-BR`).
+The App is available in the following languages:
+- English (`en`)
+- French (`fr`)
+- Spanish (`es`)
+- Catalan (`ca`)
+- Brazilian Portuguese (`pt-BR`)
+- Japanese (`ja`)
+- Simplified Chinese (`zh`)
+- Thai (`th`)
+- Vietnamese (`vi`)
+- Russian (`ru`)
 
 ## For Teams & Businesses
 

TRANSLATIONS.md

@@ -18,10 +18,10 @@ If you want to add a new README language:
 
 You can also help translate the app UI via:
 
-- `packages/app/src/i18n/`
+- `apps/app/src/i18n/`
 
-Currently available app UI locales: English (`en`), Japanese (`ja`), Simplified Chinese (`zh`), Vietnamese (`vi`), Brazilian Portuguese (`pt-BR`).
+Currently available app UI locales: English (`en`), Japanese (`ja`), Simplified Chinese (`zh`), Vietnamese (`vi`), Brazilian Portuguese (`pt-BR`), Russian (`ru`).
 
-Locale files live in `packages/app/src/i18n/locales/`.
+Locale files live in `apps/app/src/i18n/locales/`.
 
 If you are unsure where to start, open an issue and mention the language you want to contribute.

apps/app/src/i18n/index.ts

@@ -7,34 +7,51 @@ import th from "./locales/th";
 import fr from "./locales/fr";
 import ca from "./locales/ca";
 import es from "./locales/es";
+import ru from "./locales/ru";
 import { LANGUAGE_PREF_KEY } from "../app/constants";
 
 /**
  * Supported languages
  */
-export type Language = "en" | "ja" | "zh" | "vi" | "pt-BR" | "th" | "fr" | "ca" | "es";
+export type Language = "en" | "ja" | "zh" | "vi" | "pt-BR" | "th" | "fr" | "ca" | "es" | "ru";
 export type Locale = Language;
 
 /**
  * All supported languages - single source of truth
  */
-export const LANGUAGES: Language[] = ["en", "ja", "zh", "vi", "pt-BR", "th", "fr", "ca", "es"];
+export const LANGUAGES: Language[] = ["en", "ja", "zh", "vi", "pt-BR", "th", "fr", "ca", "es", "ru"];
 
 /**
  * Language options for UI - single source of truth
  */
 export const LANGUAGE_OPTIONS = [
   { value: "en" as Language, label: "English", nativeName: "English" },
-  { value: "ja" as Language, label: "日本語", nativeName: "日本語" },
-  { value: "zh" as Language, label: "简体中文", nativeName: "简体中文" },
+  { value: "ja" as Language, label: "Japanese", nativeName: "日本語" },
+  { value: "zh" as Language, label: "Chinese (Simplified)", nativeName: "简体中文" },
   { value: "vi" as Language, label: "Vietnamese", nativeName: "Tiếng Việt" },
   { value: "pt-BR" as Language, label: "Portuguese (BR)", nativeName: "Português (BR)" },
-  { value: "th" as Language, label: "ไทย", nativeName: "ไทย" },
+  { value: "th" as Language, label: "Thai", nativeName: "ไทย" },
   { value: "fr" as Language, label: "French", nativeName: "Français" },
-  { value: "ca" as Language, label: "Català", nativeName: "Català" },
-  { value: "es" as Language, label: "Español", nativeName: "Español" },
+  { value: "ca" as Language, label: "Catalan", nativeName: "Català" },
+  { value: "es" as Language, label: "Spanish", nativeName: "Español" },
+  { value: "ru" as Language, label: "Russian", nativeName: "Русский" },
 ] as const;
 
+const PLURAL_SUFFIX_EMPTY_LANGUAGES = new Set<Language>(["ja", "zh", "th"]);
+
+/**
+ * Current translation strings use an English-style plural suffix placeholder.
+ * Some locales render the noun without a visible plural marker, so we keep
+ * that suffix empty for them.
+ */
+export const pluralSuffix = (locale: Language, count: number): string => {
+  if (PLURAL_SUFFIX_EMPTY_LANGUAGES.has(locale)) {
+    return "";
+  }
+
+  return count === 1 ? "" : "s";
+};
+
 /**
  * Translation maps
  */
@@ -48,6 +65,7 @@ const TRANSLATIONS: Record<Language, Record<string, string>> = {
   fr,
   ca,
   es,
+  ru,
 };
 
 /**

apps/app/src/i18n/locales/index.ts

@@ -9,3 +9,4 @@ export { default as ptBR } from "./pt-BR";
 export { default as fr } from "./fr";
 export { default as ca } from "./ca";
 export { default as es } from "./es";
+export { default as ru } from "./ru";