feat(i18n): add Korean as a seventh end-to-end locale

Register `ko` in the locale list, language names, and labels, and ship
messages/ko.json so the whole UI — dashboard, settings, share views,
clinician PDF, notifications, and AI prompts — renders in Korean.

Extend the locale-parity, English-leak, plural-completeness, and copy
guard tests to cover the new locale, and update README/CONTRIBUTING to
list Korean among the supported languages.

CONTRIBUTING.md

@@ -121,7 +121,7 @@ Contributors: branch off `main`; PRs target `main`.
 
 ## Translations
 
-HealthLog ships with English (`en`) and German (`de`) maintained by the project, plus French (`fr`), Spanish (`es`), Italian (`it`), and Polish (`pl`) that are **AI-initial, community-maintained**. The maintained locales are reviewed line-by-line; the community-maintained ones surface a small banner inviting users to improve them.
+HealthLog ships with English (`en`) and German (`de`) maintained by the project, plus French (`fr`), Spanish (`es`), Italian (`it`), Polish (`pl`), and Korean (`ko`) that are **AI-initial, community-maintained**. The maintained locales are reviewed line-by-line; the community-maintained ones surface a small banner inviting users to improve them.
 
 ### Improving an existing locale
 

README.md

@@ -44,7 +44,7 @@ Try the [live demo](https://demo.healthlog.dev) to see a working install — sig
 - **AI insights you own.** Daily briefing, health scores, correlations, and a conversational coach grounded in your own measurements and interpreted against cited guideline reference bands — where a value sits and what that means in plain words, never a diagnosis. The coach proposes concrete if-then plans you accept or decline, and suppresses proactive check-ins when there's nothing genuine to say. Bring your own OpenAI or Anthropic key, or point at a local endpoint (Ollama, LM Studio, vLLM) so nothing leaves your network.
 - **Clinician-ready output.** A doctor-report PDF generated client-side, a read-only HL7 FHIR R4 API, and scoped, time-limited share links you revoke after the visit.
 - **Private by construction.** AES-256-GCM encryption at rest with zero-downtime key rotation, passkey login, server-side sessions, strict CSP — and no third-party tracking anywhere.
-- **Built to be lived in.** Installable PWA with offline support, medication reminders over APNs, Telegram, ntfy, and Web Push, a sub-second dashboard on years of imported history — in English, German, Spanish, French, Italian, and Polish end to end.
+- **Built to be lived in.** Installable PWA with offline support, medication reminders over APNs, Telegram, ntfy, and Web Push, a sub-second dashboard on years of imported history — in English, German, Spanish, French, Italian, Polish, and Korean end to end.
 
 The full feature tour, integration guides, and API reference live at [docs.healthlog.dev](https://docs.healthlog.dev).
 

scripts/generate-i18n-boot.mjs

@@ -28,7 +28,7 @@ const __dirname = dirname(fileURLToPath(import.meta.url));
 const repoRoot = join(__dirname, "..");
 const outDir = join(repoRoot, "public", "i18n");
 
-const LOCALES = ["de", "en", "fr", "es", "it", "pl"];
+const LOCALES = ["de", "en", "fr", "es", "it", "pl", "ko"];
 
 mkdirSync(outDir, { recursive: true });
 

scripts/i18n-key-tool.mjs

@@ -11,7 +11,7 @@
  */
 import { readFileSync, writeFileSync } from "node:fs";
 
-const LOCALES = ["de", "en", "es", "fr", "it", "pl"];
+const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"];
 const file = (loc) => `messages/${loc}.json`;
 
 function read(loc) {

scripts/split-description.mjs

@@ -18,7 +18,7 @@
  */
 import { readFileSync, writeFileSync } from "node:fs";
 
-const LOCALES = ["de", "en", "es", "fr", "it", "pl"];
+const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"];
 const BOUNDARY = /(?<=[.!?])\s+(?=[A-ZÄÖÜÀÂÉÈÊÎÔÙÛÇŁŚŹŻĄĆĘŃÓ0-9„"„«])/u;
 
 /**

src/__tests__/copy-matches-behaviour-guard.test.ts

@@ -40,7 +40,7 @@ import { join } from "node:path";
 import { describe, expect, it } from "vitest";
 
 const MESSAGES = join(__dirname, "../../messages");
-const LOCALES = ["de", "en", "es", "fr", "it", "pl"] as const;
+const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"] as const;
 
 function bundle(locale: string): Record<string, unknown> {
   return JSON.parse(readFileSync(join(MESSAGES, `${locale}.json`), "utf8"));

src/__tests__/i18n-english-leak-guard.test.ts

@@ -33,7 +33,7 @@ const EN_PATH = join(MESSAGES_DIR, "en.json");
 // intentionally excluded — it carries accepted anglicisms (e.g. "Health
 // Score") that would be noise here, and is covered by its own pinned checks in
 // `i18n-locale-integrity`.
-const LEAK_LOCALES = ["es", "fr", "it", "pl"] as const;
+const LEAK_LOCALES = ["es", "fr", "it", "pl", "ko"] as const;
 
 function flattenValues(
   obj: unknown,

src/__tests__/insights-unit-literal-guard.test.ts

@@ -20,7 +20,7 @@ import { join } from "node:path";
  * the key is a prop, not a call argument. Both halves are asserted here.
  */
 
-const LOCALES = ["en", "de", "es", "fr", "it", "pl"] as const;
+const LOCALES = ["en", "de", "es", "fr", "it", "pl", "ko"] as const;
 const INSIGHTS_PAGES_DIR = join(process.cwd(), "src/app/insights");
 
 /**

src/__tests__/manage-activity-inventory.test.ts

@@ -93,7 +93,7 @@ const NOT_IN_THE_FEED = [
 /** What an action with no sentence of its own renders as. */
 const FALLBACK_KEY = "recordSharing.activity.acted";
 /** The six bundles the product ships. */
-const LOCALES = ["de", "en", "es", "fr", "it", "pl"] as const;
+const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"] as const;
 
 /** Every `route.ts` under `src/app/api`, walked rather than globbed: a glob's
  *  `*` skips a leading dot and this tree has dot-directories. */

src/__tests__/moodlog-removal-guard.test.ts

@@ -25,7 +25,7 @@ import { INTEGRATION_DISPLAY_NAMES } from "@/components/settings/integrations/in
 
 const ROOT = path.resolve(__dirname, "../..");
 
-const LOCALES = ["de", "en", "es", "fr", "it", "pl"] as const;
+const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"] as const;
 
 /** Every path the retired bridge occupied. */
 const REMOVED_PATHS = [

src/__tests__/record-settings-ui.test.tsx

@@ -50,7 +50,7 @@ describe("managed record settings UI", () => {
         fromRoot("src/components/settings/record-settings-section-gate.tsx"),
         "utf8",
       ),
-      ...["de", "en", "es", "fr", "it", "pl"].map((locale) =>
+      ...["de", "en", "es", "fr", "it", "pl", "ko"].map((locale) =>
         readFile(fromRoot(`messages/${locale}.json`), "utf8"),
       ),
     ]);

src/__tests__/sharing-boundary-copy.test.ts

@@ -38,7 +38,7 @@ import {
  * it — which is the part that rots silently.
  */
 const ROOT = process.cwd();
-const LOCALES = ["de", "en", "es", "fr", "it", "pl"] as const;
+const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"] as const;
 
 /** The published description of the level, off the Zod schema itself. */
 function accessDescription(): string {

src/__tests__/v1341-locale-parity.test.ts

@@ -4,7 +4,7 @@ import { join } from "node:path";
 import { describe, expect, it } from "vitest";
 
 const ROOT = join(__dirname, "../..");
-const LOCALES = ["en", "de", "es", "fr", "it", "pl"] as const;
+const LOCALES = ["en", "de", "es", "fr", "it", "pl", "ko"] as const;
 
 const REQUIRED_KEYS = [
   // Security: adding a passkey now requires an existing sign-in factor.

src/app/__tests__/not-found-copy.test.ts

@@ -10,7 +10,7 @@ import { readFileSync } from "node:fs";
 import { join } from "node:path";
 
 const ROOT = join(__dirname, "../../..");
-const LOCALES = ["en", "de", "fr", "es", "it", "pl"] as const;
+const LOCALES = ["en", "de", "fr", "es", "it", "pl", "ko"] as const;
 
 interface Messages {
   notFound: {

src/app/api/admin/notifications/test/route.ts

@@ -69,7 +69,8 @@ function isLocale(value: string | null | undefined): value is Locale {
     value === "fr" ||
     value === "es" ||
     value === "it" ||
-    value === "pl"
+    value === "pl" ||
+    value === "ko"
   );
 }
 

src/app/api/medications/extract/route.ts

@@ -91,7 +91,7 @@ const MAX_OUTPUT_TOKENS = 600;
 const requestSchema = z.object({
   text: z.string().min(1).max(MAX_TEXT_LENGTH),
   /** Optional UI locale; informational hint for the model. */
-  locale: z.enum(["en", "de", "es", "fr", "it", "pl"]).optional(),
+  locale: z.enum(["en", "de", "es", "fr", "it", "pl", "ko"]).optional(),
   /**
    * Optional override of the reference date used to resolve relative
    * phrases ("tomorrow", "next Monday"). Defaults to the server's

src/app/api/notifications/apns/test/route.ts

@@ -32,7 +32,8 @@ function isLocale(value: string | null | undefined): value is Locale {
     value === "fr" ||
     value === "es" ||
     value === "it" ||
-    value === "pl"
+    value === "pl" ||
+    value === "ko"
   );
 }
 

src/app/api/settings/telegram/test/route.ts

@@ -15,7 +15,8 @@ function isLocale(value: string | null | undefined): value is Locale {
     value === "fr" ||
     value === "es" ||
     value === "it" ||
-    value === "pl"
+    value === "pl" ||
+    value === "ko"
   );
 }
 

src/components/charts/__tests__/trend-card-baseline-alignment.test.tsx

@@ -202,7 +202,7 @@ describe("dashboard.*Short keys exist across all six locales", () => {
 
   // Resolved at test time so the assertion runs against the current
   // bundle, not a stale cached snapshot.
-  const locales = ["en", "de", "fr", "es", "it", "pl"] as const;
+  const locales = ["en", "de", "fr", "es", "it", "pl", "ko"] as const;
 
   it.each(locales)("%s carries every dashboard.*Short key", async (locale) => {
     const messages = (await import(`../../../../messages/${locale}.json`))

src/components/i18n/maintainership-banner.tsx

@@ -15,7 +15,7 @@ import { useTranslations } from "@/lib/i18n/context";
  * but the prose has not been hand-reviewed for register, regional
  * vocabulary, or domain-specific nuance.
  *
- * This banner renders ONLY on non-maintained locales (FR/ES/IT/PL
+ * This banner renders ONLY on non-maintained locales (FR/ES/IT/PL/KO
  * today) and surfaces a small, dismissible strip at the top of the
  * authenticated app shell. It tells the user the translation is
  * AI-maintained and links to the GitHub translation-feedback issue

src/components/layout/__tests__/offline-banner.test.tsx

@@ -66,7 +66,7 @@ describe("<OfflineBanner>", () => {
   });
 
   it("ships the message key in every supported locale", () => {
-    for (const locale of ["en", "de", "fr", "es", "it", "pl"] as const) {
+    for (const locale of ["en", "de", "fr", "es", "it", "pl", "ko"] as const) {
       const m = loadMessages(locale);
       expect(m.offlineBanner.message.length, locale).toBeGreaterThan(0);
     }

src/components/medications/scheduling/natural-language-extractor.tsx

@@ -71,7 +71,7 @@ export interface NaturalLanguageExtractorProps {
    * UI locale forwarded to the route as a hint. The route accepts an
    * undefined value and falls back to the resolver chain.
    */
-  locale?: "en" | "de" | "es" | "fr" | "it" | "pl";
+  locale?: "en" | "de" | "es" | "fr" | "it" | "pl" | "ko";
   /**
    * Optional override of the API path so the wizard test harness can
    * point at a mock server. Defaults to the production route.

src/components/settings/__tests__/import-panel.test.tsx

@@ -108,7 +108,7 @@ describe("<ImportPanel> — SSR smoke", () => {
 });
 
 describe("<AppleHealthEstimateWarning>", () => {
-  it.each(["en", "de", "es", "fr", "it", "pl"] as const)(
+  it.each(["en", "de", "es", "fr", "it", "pl", "ko"] as const)(
     "renders localized estimate disclosure for %s",
     (locale) => {
       const html = render(<AppleHealthEstimateWarning days={3} />, locale);

src/components/settings/__tests__/managed-record-settings-section.test.tsx

@@ -7,7 +7,7 @@ import { ALL_METRICS } from "@/lib/validations/thresholds";
 
 import { ManagedRecordSettingsForm } from "../managed-record-settings-section";
 
-const LOCALES = ["de", "en", "es", "fr", "it", "pl"] as const;
+const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"] as const;
 
 const render = (
   family: Parameters<typeof ManagedRecordSettingsForm>[0]["family"],

src/components/settings/integrations/__tests__/apple-health-card.test.tsx

@@ -218,7 +218,7 @@ describe("<AppleHealthCard>", () => {
     }
   });
 
-  it.each(["en", "de", "es", "fr", "it", "pl"] as const)(
+  it.each(["en", "de", "es", "fr", "it", "pl", "ko"] as const)(
     "renders localized Apple Health copy for %s without leaking keys",
     (locale) => {
       statusPayload = {

src/components/settings/managed-record-settings-section.tsx

@@ -400,7 +400,7 @@ function ProfileSettingsForm({
           <option value="">
             {t("settings.sharedRecord.managedSettings.profile.systemDefault")}
           </option>
-          {["de", "en", "es", "fr", "it", "pl"].map((locale) => (
+          {["de", "en", "es", "fr", "it", "pl", "ko"].map((locale) => (
             <option key={locale} value={locale}>
               {locale}
             </option>

src/components/ui/date-field.tsx

@@ -3,7 +3,7 @@
 import * as React from "react";
 import { CalendarIcon } from "lucide-react";
 import type { Matcher } from "react-day-picker";
-import { de, enUS, es, fr, it, pl } from "date-fns/locale";
+import { de, enUS, es, fr, it, ko, pl } from "date-fns/locale";
 import type { Locale as DateFnsLocale } from "date-fns";
 
 import { cn } from "@/lib/utils";
@@ -325,6 +325,8 @@ function resolveDateFnsLocale(
       return it;
     case "pl":
       return pl;
+    case "ko":
+      return ko;
     default:
       return enUS;
   }

src/lib/__tests__/geo-offline-detection.test.ts

@@ -170,7 +170,7 @@ describe("offline-geo runtime detection (v1.4.27 R5)", () => {
     // issue #659 — the message used to tell a self-hoster to set
     // MAXMIND_LICENSE_KEY in this repository's Actions secrets, which is
     // not something they can do. Every locale must name the mount instead.
-    const locales = ["de", "en", "es", "fr", "it", "pl"] as const;
+    const locales = ["de", "en", "es", "fr", "it", "pl", "ko"] as const;
     for (const locale of locales) {
       const bundle = JSON.parse(
         readFileSync(

src/lib/ai/coach/__tests__/system-prompt-contract-parity.test.ts

@@ -20,11 +20,11 @@ import type { Locale } from "@/lib/i18n/config";
  *  - grounding: the literal "SNAPSHOT" token, which the grounding rule's
  *    `must_contain` pins in every locale.
  *  - GLP-1 dose safety: the brand registry (Mounjaro / Ozempic), which is
- *    identical across all six locales (an international registry, never
+ *    identical across all seven locales (an international registry, never
  *    translated) and only ever appears inside the dose-safety contract.
  */
 
-const ALL_LOCALES: Locale[] = ["de", "en", "fr", "es", "it", "pl"];
+const ALL_LOCALES: Locale[] = ["de", "en", "fr", "es", "it", "pl", "ko"];
 
 describe("resolved Coach system prompt — grounding + GLP-1 per locale", () => {
   for (const locale of ALL_LOCALES) {

src/lib/ai/coach/system-prompt.ts

@@ -1130,6 +1130,7 @@ const LOCALE_REPLY_FOOTER_FALLBACK: Record<
   es: "\n\nREPLY LANGUAGE: respond in Spanish. Mirror the user's register; use natural Spanish health vocabulary.",
   it: "\n\nREPLY LANGUAGE: respond in Italian. Mirror the user's register; use natural Italian health vocabulary.",
   pl: "\n\nREPLY LANGUAGE: respond in Polish. Mirror the user's register (formal Pan/Pani for medical-adjacent topics); use natural Polish health vocabulary.",
+  ko: "\n\nREPLY LANGUAGE: respond in Korean. Use the 해요체 register throughout (never 합쇼체 or plain 한다체); use natural Korean health vocabulary.",
 };
 
 /**

src/lib/ai/prompts/output-language.ts

@@ -54,6 +54,8 @@ export function targetLanguageName(locale: Locale): string {
       return "Italian";
     case "pl":
       return "Polish";
+    case "ko":
+      return "Korean";
     default:
       return "English";
   }

src/lib/analytics/__tests__/bp-grade.test.ts

@@ -510,7 +510,7 @@ describe("the scale the popover quotes", () => {
     ).toBeLessThan(100);
   });
 
-  it.each(["en", "de", "fr", "es", "it", "pl"])(
+  it.each(["en", "de", "fr", "es", "it", "pl", "ko"])(
     "quotes those same two numbers in %s",
     (locale) => {
       const bundle = JSON.parse(

src/lib/auth/login-alert.ts

@@ -33,7 +33,8 @@ function isLocale(value: string | null | undefined): value is Locale {
     value === "fr" ||
     value === "es" ||
     value === "it" ||
-    value === "pl"
+    value === "pl" ||
+    value === "ko"
   );
 }
 

src/lib/feature-flags/__tests__/no-dead-assistant-flag.test.ts

@@ -27,7 +27,7 @@ import {
 } from "@/lib/feature-flags";
 
 const ROOT = path.resolve(__dirname, "../../../..");
-const LOCALES = ["de", "en", "es", "fr", "it", "pl"] as const;
+const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"] as const;
 
 /** Names the retired switch went by, on the wire and in the database. */
 const RETIRED_NAMES = [

src/lib/format-locale.ts

@@ -38,6 +38,7 @@ const INTL_LOCALE_MAP: Record<Locale, string> = {
   es: "es-ES",
   it: "it-IT",
   pl: "pl-PL",
+  ko: "ko-KR",
 };
 
 export function resolveIntlLocale(locale: Locale): string {
@@ -310,5 +311,6 @@ export function parseLocaleFromAcceptLanguage(header: string | null): Locale {
   if (primary.startsWith("es")) return "es";
   if (primary.startsWith("it")) return "it";
   if (primary.startsWith("pl")) return "pl";
+  if (primary.startsWith("ko")) return "ko";
   return "en";
 }

src/lib/i18n/__tests__/plural-locale-completeness.test.ts

@@ -18,7 +18,7 @@ import { locales, localeLanguageNames, coerceLocale } from "../config";
 import { getPhaseMessage } from "@/lib/jobs/reminder-phases";
 import { detectRefusal } from "@/lib/ai/coach/refusal";
 
-const NON_GERMAN_TRANSLATED = ["es", "fr", "it", "pl"] as const;
+const NON_GERMAN_TRANSLATED = ["es", "fr", "it", "pl", "ko"] as const;
 
 describe("plural tiers", () => {
   it("gives Polish its third tier for 2-4 and keeps many for 5+", () => {

src/lib/i18n/config.ts

@@ -1,4 +1,4 @@
-export const locales = ["de", "en", "fr", "es", "it", "pl"] as const;
+export const locales = ["de", "en", "fr", "es", "it", "pl", "ko"] as const;
 export type Locale = (typeof locales)[number];
 
 export const defaultLocale: Locale = "en";
@@ -32,6 +32,7 @@ export const localeLanguageNames: Record<Locale, string> = {
   es: "Spanish",
   it: "Italian",
   pl: "Polish",
+  ko: "Korean",
 };
 
 export const localeLabels: Record<Locale, string> = {
@@ -41,6 +42,7 @@ export const localeLabels: Record<Locale, string> = {
   es: "Español",
   it: "Italiano",
   pl: "Polski",
+  ko: "한국어",
 };
 
 /**

src/lib/i18n/load-locale.ts

@@ -49,6 +49,7 @@ const loaders: Record<Locale, () => Promise<{ default: MessageBundle }>> = {
   es: () => import("../../../messages/es.json"),
   it: () => import("../../../messages/it.json"),
   pl: () => import("../../../messages/pl.json"),
+  ko: () => import("../../../messages/ko.json"),
 };
 
 function initialCache(): Partial<Record<Locale, MessageBundle>> {

src/lib/i18n/shared-resolve.ts

@@ -9,7 +9,7 @@
  * Since the i18n bundle split, `allMessages` is SERVER-ONLY: the root
  * layout picks the active locale's bundle out of it for the RSC handoff
  * and `getServerTranslator()` resolves against it. Do NOT import this
- * module from client code — the six static JSON imports would drag
+ * module from client code — the seven static JSON imports would drag
  * every locale back into the client chunk (the ~1.4 MiB regression the
  * split removed). Client code uses `./load-locale` (static EN fallback
  * floor + dynamic per-locale imports) and `./resolve-key` instead.
@@ -20,6 +20,7 @@ import frMessages from "../../../messages/fr.json";
 import esMessages from "../../../messages/es.json";
 import itMessages from "../../../messages/it.json";
 import plMessages from "../../../messages/pl.json";
+import koMessages from "../../../messages/ko.json";
 import { locales, type Locale } from "./config";
 import { resolveKey } from "./resolve-key";
 
@@ -36,6 +37,7 @@ export const allMessages: Record<Locale, Record<string, unknown>> = {
   es: esMessages,
   it: itMessages,
   pl: plMessages,
+  ko: koMessages,
 };
 
 /**

src/lib/jobs/__tests__/document-summary-catchup.test.ts

@@ -173,7 +173,7 @@ describe("enqueueSummaryCatchUp", () => {
 });
 
 describe("the toggle copy discloses the catch-up", () => {
-  const LOCALES = ["de", "en", "es", "fr", "it", "pl"] as const;
+  const LOCALES = ["de", "en", "es", "fr", "it", "pl", "ko"] as const;
 
   function autoReadCopy(locale: string): { subLabel: string; honesty: string } {
     const bundle = JSON.parse(

src/lib/jobs/__tests__/insight-status-generate.test.ts

@@ -163,7 +163,7 @@ describe("enqueueStatusGeneration", () => {
     const send = vi.fn().mockResolvedValue("job-id");
     getGlobalBoss.mockReturnValue({ send });
 
-    for (const locale of ["de", "en", "fr", "es", "it", "pl"] as const) {
+    for (const locale of ["de", "en", "fr", "es", "it", "pl", "ko"] as const) {
       await enqueueStatusGeneration({ userId: "u1", metric: "mood", locale });
     }
 

src/lib/jobs/__tests__/mood-reminder.test.ts

@@ -217,7 +217,7 @@ describe("buildMoodReminderPayload", () => {
     expect(p.body).toBe("How are you feeling today?");
   });
 
-  it.each(["es", "fr", "it", "pl"] as const)(
+  it.each(["es", "fr", "it", "pl", "ko"] as const)(
     "returns native (non-EN) strings for locale=%s",
     (locale) => {
       const p = buildMoodReminderPayload(locale);

src/lib/notifications/dispatch-localised.ts

@@ -79,7 +79,8 @@ function isLocale(value: string | null | undefined): value is Locale {
     value === "fr" ||
     value === "es" ||
     value === "it" ||
-    value === "pl"
+    value === "pl" ||
+    value === "ko"
   );
 }
 

src/lib/openapi/routes/medications/schemas.ts

@@ -855,7 +855,7 @@ export const medicationExtractRequest = z
         "Free-text medication description (any locale). Up to 2 000 characters. The model never echoes the text back into another tenant — it is only used to produce the structured fields.",
       ),
     locale: z
-      .enum(["en", "de", "es", "fr", "it", "pl"])
+      .enum(["en", "de", "es", "fr", "it", "pl", "ko"])
       .optional()
       .describe("Optional UI locale hint for the model."),
     today: z

src/lib/openapi/routes/record-settings.ts

@@ -119,7 +119,7 @@ const profileSettings = z
       .nullable()
       .describe("Calendar date (`YYYY-MM-DD`), not an instant."),
     gender: z.enum(["MALE", "FEMALE", "OTHER"]).nullable(),
-    locale: z.enum(["de", "en", "es", "fr", "it", "pl"]).nullable(),
+    locale: z.enum(["de", "en", "es", "fr", "it", "pl", "ko"]).nullable(),
     timezone: z.string(),
     unitPreference: z.enum(["metric", "imperial"]),
     timeFormat: z.enum(["AUTO", "H12", "H24"]),

src/lib/record-settings/configuration.ts

@@ -59,7 +59,7 @@ const profilePatchSchema = z
     heightCm: z.number().finite().min(30).max(300).nullable().optional(),
     dateOfBirth: z.string().date().nullable().optional(),
     gender: z.enum(["MALE", "FEMALE", "OTHER"]).nullable().optional(),
-    locale: z.enum(["de", "en", "es", "fr", "it", "pl"]).nullable().optional(),
+    locale: z.enum(["de", "en", "es", "fr", "it", "pl", "ko"]).nullable().optional(),
     timezone: timezoneSchema.optional(),
     unitPreference: z.enum(["metric", "imperial"]).optional(),
     timeFormat: z.enum(["AUTO", "H12", "H24"]).optional(),

src/lib/validations/managed-profiles.ts

@@ -19,7 +19,7 @@ export const createManagedProfileSchema = z
   .object({
     displayName: z.string().trim().min(1).max(80),
     dateOfBirth: z.iso.date().nullable().optional(),
-    locale: z.enum(["de", "en", "es", "fr", "it", "pl"]),
+    locale: z.enum(["de", "en", "es", "fr", "it", "pl", "ko"]),
     timezone: z
       .string()
       .min(1)

src/lib/zxcvbn-i18n.ts

@@ -63,6 +63,55 @@ const suggestionsDe: Record<string, string> = {
     'Vorhersehbare Ersetzungen wie „@" statt „a" helfen nicht wesentlich',
 };
 
+const warningsKo: Record<string, string> = {
+  "Straight rows of keys are easy to guess":
+    "키보드에서 일렬로 놓인 키는 쉽게 추측돼요",
+  "Short keyboard patterns are easy to guess":
+    "짧은 키보드 패턴은 쉽게 추측돼요",
+  'Repeats like "aaa" are easy to guess': '"aaa" 같은 반복은 쉽게 추측돼요',
+  'Repeats like "abcabc" are easy to guess':
+    '"abcabc" 같은 반복은 쉽게 추측돼요',
+  "Sequences like abc or 6543 are easy to guess":
+    "abc나 6543 같은 연속은 쉽게 추측돼요",
+  "Recent years are easy to guess": "최근 연도는 쉽게 추측돼요",
+  "Dates are often easy to guess": "날짜는 대체로 쉽게 추측돼요",
+  "This is a top-10 common password": "가장 흔한 비밀번호 10개 안에 들어요",
+  "This is a top-100 common password": "가장 흔한 비밀번호 100개 안에 들어요",
+  "This is a very common password": "아주 흔한 비밀번호예요",
+  "This is similar to a commonly used password":
+    "자주 쓰이는 비밀번호와 비슷해요",
+  "A word by itself is easy to guess": "단어 하나만으로는 쉽게 추측돼요",
+  "Names and surnames by themselves are easy to guess":
+    "이름이나 성만으로는 쉽게 추측돼요",
+  "Common names and surnames are easy to guess":
+    "흔한 이름과 성은 쉽게 추측돼요",
+};
+
+const suggestionsKo: Record<string, string> = {
+  "Use a few words, avoid common phrases":
+    "단어를 여러 개 쓰고, 흔한 문구는 피해 주세요",
+  "No need for symbols, digits, or uppercase letters":
+    "기호, 숫자, 대문자를 꼭 넣지 않아도 돼요",
+  "Add another word or two. Uncommon words are better.":
+    "단어를 한두 개 더 붙여 주세요. 흔하지 않은 단어일수록 좋아요.",
+  "Use a longer keyboard pattern with more turns":
+    "방향이 자주 바뀌는 더 긴 키보드 패턴을 써 주세요",
+  "Avoid repeated words and characters": "반복되는 단어와 문자는 피해 주세요",
+  "Avoid sequences": "연속된 배열은 피해 주세요",
+  "Avoid recent years": "최근 연도는 피해 주세요",
+  "Avoid years that are associated with you":
+    "본인과 관련된 연도는 피해 주세요",
+  "Avoid dates and years that are associated with you":
+    "본인과 관련된 날짜와 연도는 피해 주세요",
+  "Capitalization doesn't help very much": "대문자로 바꿔도 큰 도움이 안 돼요",
+  "All-uppercase is almost as easy to guess as all-lowercase":
+    "전부 대문자로 써도 전부 소문자만큼 쉽게 추측돼요",
+  "Reversed words aren't much harder to guess":
+    "단어를 거꾸로 써도 추측 난이도는 별로 오르지 않아요",
+  "Predictable substitutions like '@' instead of 'a' don't help very much":
+    "'a' 대신 '@'처럼 뻔한 치환은 큰 도움이 안 돼요",
+};
+
 // English: identity map for all known strings (the library already returns
 // English, but we wrap them so unknown values still pass through unchanged).
 const warningsEn: Record<string, string> = Object.fromEntries(
@@ -77,8 +126,14 @@ export interface ZxcvbnTranslations {
 }
 
 export function getZxcvbnTranslations(locale: Locale): ZxcvbnTranslations {
-  const warnings = locale === "de" ? warningsDe : warningsEn;
-  const suggestions = locale === "de" ? suggestionsDe : suggestionsEn;
+  const warnings =
+    locale === "de" ? warningsDe : locale === "ko" ? warningsKo : warningsEn;
+  const suggestions =
+    locale === "de"
+      ? suggestionsDe
+      : locale === "ko"
+        ? suggestionsKo
+        : suggestionsEn;
   return {
     translate(text: string): string {
       return warnings[text] ?? suggestions[text] ?? text;

vitest.setup.ts

@@ -17,6 +17,7 @@ import esMessages from "./messages/es.json";
 import frMessages from "./messages/fr.json";
 import itMessages from "./messages/it.json";
 import plMessages from "./messages/pl.json";
+import koMessages from "./messages/ko.json";
 
 primeMessages("de", deMessages);
 primeMessages("en", enMessages);
@@ -24,3 +25,4 @@ primeMessages("es", esMessages);
 primeMessages("fr", frMessages);
 primeMessages("it", itMessages);
 primeMessages("pl", plMessages);
+primeMessages("ko", koMessages);