i18n: lazy-load locales + register 8 new (pt fr de it nl pl ru ko) with fonts

package-lock.json

@@ -22,6 +22,7 @@
         "@fontsource/bebas-neue": "^5.2.7",
         "@fontsource/kanit": "^5.3.0",
         "@fontsource/noto-sans-jp": "^5.3.0",
+        "@fontsource/noto-sans-kr": "^5.3.0",
         "@getalby/sdk": "^5.1.1",
         "@hookform/resolvers": "^3.9.0",
         "@modelcontextprotocol/sdk": "^1.29.0",
@@ -1521,6 +1522,15 @@
         "url": "https://github.com/sponsors/ayuhito"
       }
     },
+    "node_modules/@fontsource/noto-sans-kr": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/@fontsource/noto-sans-kr/-/noto-sans-kr-5.3.0.tgz",
+      "integrity": "sha512-/JnpTjaCOXW7xUoqOyCVYSr05VOkDy5Yla9O+WAEiS7u+yYLsmHoqj6v1W0bf91G8G3XA2+NnRS3CX2Tf/FVZg==",
+      "license": "OFL-1.1",
+      "funding": {
+        "url": "https://github.com/sponsors/ayuhito"
+      }
+    },
     "node_modules/@getalby/lightning-tools": {
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/@getalby/lightning-tools/-/lightning-tools-5.2.0.tgz",

package.json

@@ -42,6 +42,7 @@
     "@fontsource/bebas-neue": "^5.2.7",
     "@fontsource/kanit": "^5.3.0",
     "@fontsource/noto-sans-jp": "^5.3.0",
+    "@fontsource/noto-sans-kr": "^5.3.0",
     "@getalby/sdk": "^5.1.1",
     "@hookform/resolvers": "^3.9.0",
     "@modelcontextprotocol/sdk": "^1.29.0",

scripts/check-i18n.mjs

@@ -129,6 +129,17 @@ async function main() {
   for (const key of ja) if (!en.has(key)) problems.push(`ja has a key not in en: ${key}`);
   const jaCoverage = en.size ? Math.round(((en.size - missingJa) / en.size) * 100) : 100;
 
+  // 5. Additional partial locales (same rules as th/ja).
+  const extraLocales = ['pt', 'fr', 'de', 'it', 'nl', 'pl', 'ru', 'ko'];
+  const extraStats = [];
+  for (const lang of extraLocales) {
+    const dict = flatten(await loadTranslations(join(SRC, `i18n/${lang}/index.ts`)));
+    for (const key of dict) if (!en.has(key)) problems.push(`${lang} has a key not in en: ${key}`);
+    const missing = [...en].filter((k) => !dict.has(k)).length;
+    const cov = en.size ? Math.round(((en.size - missing) / en.size) * 100) : 100;
+    extraStats.push(`${lang} ${cov}%`);
+  }
+
   if (problems.length) {
     console.error(`\n✖ i18n check failed (${problems.length}):`);
     for (const p of problems.slice(0, 200)) console.error(`  • ${p}`);
@@ -136,7 +147,7 @@ async function main() {
     process.exit(1);
   }
 
-  console.log(`✓ i18n check passed — ${en.size} keys in en/es, ${used.size} used · th ${thCoverage}% (${en.size - missingTh}/${en.size}) · ja ${jaCoverage}% (${en.size - missingJa}/${en.size})`);
+  console.log(`✓ i18n check passed — ${en.size} keys in en/es, ${used.size} used · th ${thCoverage}% · ja ${jaCoverage}% · ${extraStats.join(' · ')}`);
 }
 
 main().catch((err) => {

src/components/LanguageToggle.tsx

@@ -19,6 +19,14 @@ interface LanguageOption {
 const languages: LanguageOption[] = [
   { code: 'en', name: 'English', nativeName: 'English', flag: '🇬🇧' },
   { code: 'es', name: 'Spanish', nativeName: 'Español', flag: '🇪🇸' },
+  { code: 'pt', name: 'Portuguese', nativeName: 'Português', flag: '🇧🇷' },
+  { code: 'fr', name: 'French', nativeName: 'Français', flag: '🇫🇷' },
+  { code: 'de', name: 'German', nativeName: 'Deutsch', flag: '🇩🇪' },
+  { code: 'it', name: 'Italian', nativeName: 'Italiano', flag: '🇮🇹' },
+  { code: 'nl', name: 'Dutch', nativeName: 'Nederlands', flag: '🇳🇱' },
+  { code: 'pl', name: 'Polish', nativeName: 'Polski', flag: '🇵🇱' },
+  { code: 'ru', name: 'Russian', nativeName: 'Русский', flag: '🇷🇺' },
+  { code: 'ko', name: 'Korean', nativeName: '한국어', flag: '🇰🇷' },
   { code: 'th', name: 'Thai', nativeName: 'ไทย', flag: '🇹🇭' },
   { code: 'ja', name: 'Japanese', nativeName: '日本語', flag: '🇯🇵' },
 ];

src/contexts/LanguageContext.tsx

@@ -4,8 +4,10 @@ import {
   LanguageContext,
   getNestedValue,
   interpolate,
-  translations,
+  englishTranslations,
+  LANGUAGE_LOADERS,
   type Language,
+  type Translations,
 } from './language';
 import { setDateLocale } from '@/lib/dateFnsI18n';
 
@@ -24,6 +26,14 @@ function detectLanguage(): Language {
   const tags = [navigator.language, ...(navigator.languages ?? [])].map((t) => t?.toLowerCase() ?? '');
   if (tags.some((t) => t.startsWith('th'))) return 'th';
   if (tags.some((t) => t.startsWith('ja'))) return 'ja';
+  if (tags.some((t) => t.startsWith('ko'))) return 'ko';
+  if (tags.some((t) => t.startsWith('pt'))) return 'pt';
+  if (tags.some((t) => t.startsWith('fr'))) return 'fr';
+  if (tags.some((t) => t.startsWith('de'))) return 'de';
+  if (tags.some((t) => t.startsWith('it'))) return 'it';
+  if (tags.some((t) => t.startsWith('nl'))) return 'nl';
+  if (tags.some((t) => t.startsWith('pl'))) return 'pl';
+  if (tags.some((t) => t.startsWith('ru'))) return 'ru';
   if (tags.some((t) => t.startsWith('es'))) return 'es';
   return 'en';
 }
@@ -35,12 +45,25 @@ function detectLanguage(): Language {
 export function LanguageProvider({ children }: LanguageProviderProps) {
   const [storedLanguage, setStoredLanguage] = useLocalStorage<Language>('app-language', detectLanguage());
   const [language, setLanguageState] = useState<Language>(storedLanguage);
+  // The loaded dictionary for `language`. Starts as English (the static source)
+  // and is replaced once the lazy locale chunk resolves, so the first paint is
+  // never blocked and untranslated keys fall back to English.
+  const [dict, setDict] = useState<Translations>(englishTranslations);
 
   // Sync with localStorage
   useEffect(() => {
     setLanguageState(storedLanguage);
   }, [storedLanguage]);
 
+  // Lazy-load the locale dictionary whenever the language changes.
+  useEffect(() => {
+    let active = true;
+    LANGUAGE_LOADERS[language]()
+      .then((d) => { if (active) setDict(d); })
+      .catch(() => { if (active) setDict(englishTranslations); });
+    return () => { active = false; };
+  }, [language]);
+
   const setLanguage = useCallback((lang: Language) => {
     setLanguageState(lang);
     setStoredLanguage(lang);
@@ -54,25 +77,17 @@ export function LanguageProvider({ children }: LanguageProviderProps) {
   }, [language]);
 
   const t = useCallback((key: string, params?: Record<string, string | number>): string => {
-    // Try to get translation in current language
-    const translation = getNestedValue(translations[language], key);
+    // Current locale first, then the English source as fallback.
+    const translation = getNestedValue(dict, key) ?? getNestedValue(englishTranslations, key);
 
     if (translation) {
       return interpolate(translation, params);
     }
 
-    // Fallback to English
-    if (language !== 'en') {
-      const fallback = getNestedValue(translations.en, key);
-      if (fallback) {
-        return interpolate(fallback, params);
-      }
-    }
-
     // Return key if no translation found (helps identify missing translations)
     console.warn(`Missing translation for key: ${key}`);
     return key;
-  }, [language]);
+  }, [dict]);
 
   // Currently no RTL languages supported, but ready for future
   const isRTL = false;

src/contexts/language.ts

@@ -1,8 +1,5 @@
 import { createContext, useContext } from 'react';
 import en from '@/i18n/en';
-import es from '@/i18n/es';
-import th from '@/i18n/th';
-import ja from '@/i18n/ja';
 
 /**
  * Language context + types + hooks. Split from the `LanguageProvider` component
@@ -10,7 +7,7 @@ import ja from '@/i18n/ja';
  * `react-refresh/only-export-components` rule.
  */
 
-export type Language = 'en' | 'es' | 'th' | 'ja';
+export type Language = 'en' | 'es' | 'th' | 'ja' | 'pt' | 'fr' | 'de' | 'it' | 'nl' | 'pl' | 'ru' | 'ko';
 
 type TranslationKey = string;
 type TranslationValue = string | { [key: string]: TranslationValue };
@@ -32,7 +29,27 @@ export interface LanguageContextType {
 
 export const LanguageContext = createContext<LanguageContextType | undefined>(undefined);
 
-export const translations: Record<Language, Translations> = { en, es, th, ja };
+export const englishTranslations = en;
+
+/**
+ * Locale dictionaries are loaded on demand — bundling every language eagerly
+ * bloats the app (each locale is hundreds of KB). English is the static source +
+ * runtime fallback; everything else is a dynamic import.
+ */
+export const LANGUAGE_LOADERS: Record<Language, () => Promise<Translations>> = {
+  en: async () => en,
+  es: () => import('@/i18n/es').then((m) => m.default),
+  th: () => import('@/i18n/th').then((m) => m.default),
+  ja: () => import('@/i18n/ja').then((m) => m.default),
+  pt: () => import('@/i18n/pt').then((m) => m.default),
+  fr: () => import('@/i18n/fr').then((m) => m.default),
+  de: () => import('@/i18n/de').then((m) => m.default),
+  it: () => import('@/i18n/it').then((m) => m.default),
+  nl: () => import('@/i18n/nl').then((m) => m.default),
+  pl: () => import('@/i18n/pl').then((m) => m.default),
+  ru: () => import('@/i18n/ru').then((m) => m.default),
+  ko: () => import('@/i18n/ko').then((m) => m.default),
+};
 
 /** Get a nested value from an object using dot notation (`nav.home`). */
 export function getNestedValue(obj: Translations, path: string): string | undefined {

src/i18n/de/index.ts

@@ -0,0 +1,9 @@
+/**
+ * de translations — fragments composed here.
+ *
+ * Partial by design: missing keys fall back to English; `check-i18n.mjs`
+ * reports coverage. Add fragments as the namespaces land.
+ */
+const de = {};
+
+export default de;

src/i18n/fr/index.ts

@@ -0,0 +1,9 @@
+/**
+ * fr translations — fragments composed here.
+ *
+ * Partial by design: missing keys fall back to English; `check-i18n.mjs`
+ * reports coverage. Add fragments as the namespaces land.
+ */
+const fr = {};
+
+export default fr;

src/i18n/it/index.ts

@@ -0,0 +1,9 @@
+/**
+ * it translations — fragments composed here.
+ *
+ * Partial by design: missing keys fall back to English; `check-i18n.mjs`
+ * reports coverage. Add fragments as the namespaces land.
+ */
+const it = {};
+
+export default it;

src/i18n/ko/index.ts

@@ -0,0 +1,9 @@
+/**
+ * ko translations — fragments composed here.
+ *
+ * Partial by design: missing keys fall back to English; `check-i18n.mjs`
+ * reports coverage. Add fragments as the namespaces land.
+ */
+const ko = {};
+
+export default ko;

src/i18n/nl/index.ts

@@ -0,0 +1,9 @@
+/**
+ * nl translations — fragments composed here.
+ *
+ * Partial by design: missing keys fall back to English; `check-i18n.mjs`
+ * reports coverage. Add fragments as the namespaces land.
+ */
+const nl = {};
+
+export default nl;

src/i18n/pl/index.ts

@@ -0,0 +1,9 @@
+/**
+ * pl translations — fragments composed here.
+ *
+ * Partial by design: missing keys fall back to English; `check-i18n.mjs`
+ * reports coverage. Add fragments as the namespaces land.
+ */
+const pl = {};
+
+export default pl;

src/i18n/pt/index.ts

@@ -0,0 +1,9 @@
+/**
+ * pt translations — fragments composed here.
+ *
+ * Partial by design: missing keys fall back to English; `check-i18n.mjs`
+ * reports coverage. Add fragments as the namespaces land.
+ */
+const pt = {};
+
+export default pt;

src/i18n/ru/index.ts

@@ -0,0 +1,9 @@
+/**
+ * ru translations — fragments composed here.
+ *
+ * Partial by design: missing keys fall back to English; `check-i18n.mjs`
+ * reports coverage. Add fragments as the namespaces land.
+ */
+const ru = {};
+
+export default ru;

src/index.css

@@ -149,18 +149,18 @@
 /* ── Display font utilities ───────────────────────────────────────────────── */
 /* Bebas Neue — used for all major headlines */
 .font-display {
-  font-family: 'Bebas Neue', 'Kanit', 'Noto Sans JP', 'Impact', 'Arial Black', sans-serif;
+  font-family: 'Bebas Neue', 'Kanit', 'Noto Sans JP', 'Noto Sans KR', 'Impact', 'Arial Black', sans-serif;
   letter-spacing: 0.04em;
 }
 
 /* Barlow Condensed — used for subheadings, labels, nav */
 .font-condensed {
-  font-family: 'Barlow Condensed', 'Kanit', 'Noto Sans JP', 'Arial Narrow', sans-serif;
+  font-family: 'Barlow Condensed', 'Kanit', 'Noto Sans JP', 'Noto Sans KR', 'Arial Narrow', sans-serif;
 }
 
 .neon-header {
   animation: neon-glow 2s ease-in-out infinite;
-  font-family: 'Bebas Neue', 'Kanit', 'Noto Sans JP', 'Impact', 'Arial Black', sans-serif;
+  font-family: 'Bebas Neue', 'Kanit', 'Noto Sans JP', 'Noto Sans KR', 'Impact', 'Arial Black', sans-serif;
   letter-spacing: 0.06em;
 }
 
@@ -714,7 +714,7 @@ select {
   position: relative;
   overflow: hidden;
   flex-shrink: 0;
-  font-family: 'Inter Variable', 'Inter', 'Kanit', 'Noto Sans JP', system-ui, sans-serif;
+  font-family: 'Inter Variable', 'Inter', 'Kanit', 'Noto Sans JP', 'Noto Sans KR', system-ui, sans-serif;
   box-shadow: 0 8px 40px rgba(0,0,0,0.6), 0 2px 8px rgba(0,0,0,0.4);
 }
 

src/lib/dateFnsI18n.ts

@@ -19,7 +19,20 @@ import {
   formatDistance as _formatDistance,
   format as _format,
 } from 'date-fns';
-import { enUS, es as esLocale, th as thLocale, ja as jaLocale } from 'date-fns/locale';
+import {
+  enUS,
+  es as esLocale,
+  th as thLocale,
+  ja as jaLocale,
+  ptBR as ptLocale,
+  fr as frLocale,
+  de as deLocale,
+  it as itLocale,
+  nl as nlLocale,
+  pl as plLocale,
+  ru as ruLocale,
+  ko as koLocale,
+} from 'date-fns/locale';
 import type { Locale } from 'date-fns';
 import type { Language } from '@/contexts/language';
 
@@ -37,6 +50,30 @@ export function setDateLocale(language: Language): void {
   } else if (language === 'ja') {
     activeLocale = jaLocale;
     activeCode = 'ja-JP';
+  } else if (language === 'pt') {
+    activeLocale = ptLocale;
+    activeCode = 'pt-BR';
+  } else if (language === 'fr') {
+    activeLocale = frLocale;
+    activeCode = 'fr-FR';
+  } else if (language === 'de') {
+    activeLocale = deLocale;
+    activeCode = 'de-DE';
+  } else if (language === 'it') {
+    activeLocale = itLocale;
+    activeCode = 'it-IT';
+  } else if (language === 'nl') {
+    activeLocale = nlLocale;
+    activeCode = 'nl-NL';
+  } else if (language === 'pl') {
+    activeLocale = plLocale;
+    activeCode = 'pl-PL';
+  } else if (language === 'ru') {
+    activeLocale = ruLocale;
+    activeCode = 'ru-RU';
+  } else if (language === 'ko') {
+    activeLocale = koLocale;
+    activeCode = 'ko-KR';
   } else {
     activeLocale = enUS;
     activeCode = 'en-US';

src/main.tsx

@@ -43,6 +43,12 @@ import '@fontsource/kanit/700.css';
 import '@fontsource/noto-sans-jp/400.css';
 import '@fontsource/noto-sans-jp/500.css';
 import '@fontsource/noto-sans-jp/700.css';
+// Korean glyphs — Noto Sans KR
+import '@fontsource/noto-sans-kr/400.css';
+import '@fontsource/noto-sans-kr/500.css';
+import '@fontsource/noto-sans-kr/700.css';
+// Cyrillic (Russian) — Inter has Cyrillic; Outfit does not
+import '@fontsource-variable/inter';
 
 // Leaflet CSS is loaded via CDN in index.html
 

tailwind.config.ts

@@ -28,7 +28,7 @@ export default {
 		},
 		extend: {
 			fontFamily: {
-				sans: ['Outfit Variable', 'Outfit', 'Kanit', 'Noto Sans JP', 'system-ui', 'sans-serif'],
+				sans: ['Outfit Variable', 'Outfit', 'Inter Variable', 'Kanit', 'Noto Sans JP', 'Noto Sans KR', 'system-ui', 'sans-serif'],
 			},
 			colors: {
 				border: 'hsl(var(--border))',