diff --git a/apps/desktop/src/App.test.tsx b/apps/desktop/src/App.test.tsx
index c039dfba..48f98e21 100644
--- a/apps/desktop/src/App.test.tsx
+++ b/apps/desktop/src/App.test.tsx
@@ -212,6 +212,27 @@ describe("App", () => {
     expect(screen.getByText(/YouTube only leaves the app when you choose import/i)).toBeTruthy();
   });
 
+  it("renders localized Korean shell copy for buyer-demo surfaces", () => {
+    const languageSpy = vi.spyOn(window.navigator, "language", "get").mockReturnValue("ko-KR");
+
+    try {
+      render(<App />);
+
+      expect(screen.getByRole("navigation", { name: /주요 합주 보기/i })).toBeTruthy();
+      expect(screen.getByRole("heading", { name: /작업 공간 홈/i })).toBeTruthy();
+      expect(screen.getByText(/동기화됨 • 로컬/i)).toBeTruthy();
+      expect(screen.getByRole("button", { name: /^작업 공간$/i })).toBeTruthy();
+      expect(screen.getByRole("button", { name: /프로젝트 열기/i })).toBeTruthy();
+      expect(screen.getByRole("button", { name: /유튜브 가져오기/i })).toBeTruthy();
+      expect(screen.getByText(/로컬 우선/i)).toBeTruthy();
+      expect(screen.getByText(/합주 지도는 이 기기에 머뭅니다/i)).toBeTruthy();
+      expect(screen.getByText(/^템포$/i)).toBeTruthy();
+      expect(screen.queryByRole("heading", { name: /Workspace Home/i })).toBeNull();
+    } finally {
+      languageSpy.mockRestore();
+    }
+  });
+
   it("keeps source controls before the analysis summary", () => {
     render(<App />);
 
diff --git a/apps/desktop/src/App.tsx b/apps/desktop/src/App.tsx
index 24f5fb09..da621b78 100644
--- a/apps/desktop/src/App.tsx
+++ b/apps/desktop/src/App.tsx
@@ -40,7 +40,7 @@ import {
   selectLocalAudioSource,
   startAnalysisJob
 } from "./lib/analysis";
-import { createTranslator, detectPreferredLocale } from "./i18n";
+import { createTranslator, detectPreferredLocale, type TranslationKey } from "./i18n";
 import { Workspace } from "./features/workspace/Workspace";
 import { EmptyState, ErrorState, LoadingState } from "./features/workspace/WorkspaceStates";
 import { Button } from "@/components/ui/button";
@@ -54,15 +54,15 @@ const URL_PATTERN = /\bhttps?:\/\/[^\s"'<>]+/gi;
 const SECRET_ASSIGNMENT_PATTERN = /\b(token|secret|password|api[_-]?key|access[_-]?token)\s*[:=]\s*[^\s,;]+/gi;
 
 const NAV_ITEMS = [
-  { label: "Workspace", icon: Home, active: true },
-  { label: "Import", icon: Upload, active: false },
-  { label: "Export", icon: Save, active: false },
-  { label: "Sections", icon: ListMusic, active: false },
-  { label: "Roles", icon: Users, active: false },
-  { label: "Stem Lab", icon: AudioWaveform, active: false },
-  { label: "Cues", icon: Sparkles, active: false },
-  { label: "Transpose", icon: SlidersHorizontal, active: false },
-  { label: "Notes", icon: FileMusic, active: false }
+  { labelKey: "navWorkspace", icon: Home, active: true },
+  { labelKey: "navImport", icon: Upload, active: false },
+  { labelKey: "navExport", icon: Save, active: false },
+  { labelKey: "navSections", icon: ListMusic, active: false },
+  { labelKey: "navRoles", icon: Users, active: false },
+  { labelKey: "navStemLab", icon: AudioWaveform, active: false },
+  { labelKey: "navCues", icon: Sparkles, active: false },
+  { labelKey: "navTranspose", icon: SlidersHorizontal, active: false },
+  { labelKey: "navNotes", icon: FileMusic, active: false }
 ] as const;
 
 const BRAND_BAR_HEIGHTS = ["h-3", "h-5", "h-7", "h-4", "h-6"] as const;
@@ -127,11 +127,11 @@ function safeErrorDetail(error: unknown, fallback: string): string {
 }
 
 /** Documented. */
-function BandScopeMark() {
+function BandScopeMark({ ariaLabel }: { ariaLabel: string }) {
   return (
     <span
       role="img"
-      aria-label="BandScope circular equalizer mark"
+      aria-label={ariaLabel}
       className="relative grid size-11 shrink-0 place-items-center rounded-full border border-cyan-200/45 bg-cyan-200/10 shadow-[0_0_28px_rgba(103,232,249,0.34)]"
     >
       <span className="absolute inset-1 rounded-full border border-teal-200/20" aria-hidden="true" />
@@ -177,7 +177,18 @@ function MetricCard({
 }
 
 /** Documented. */
-function ConfidenceMetric({ song }: { song: RehearsalSong | null }) {
+function sectionCountDetail(t: ReturnType<typeof createTranslator>, sectionCount: number): string {
+  if (sectionCount === 0) {
+    return t("metricConfidenceLocalAnalysis");
+  }
+  if (sectionCount === 1) {
+    return `1 ${t("metricConfidenceSectionSingular")}`;
+  }
+  return `${sectionCount} ${t("metricConfidenceSectionPlural")}`;
+}
+
+/** Documented. */
+function ConfidenceMetric({ song, t }: { song: RehearsalSong | null; t: ReturnType<typeof createTranslator> }) {
   const sectionCount = song?.sections.length ?? 0;
   const confidenceOrder = { high: 3, medium: 2, low: 1 } as const;
   const lowestConfidence = song?.sections.reduce<RehearsalSong["sections"][number]["confidence"]["level"] | null>(
@@ -189,13 +200,13 @@ function ConfidenceMetric({ song }: { song: RehearsalSong | null }) {
     },
     null
   );
-  const confidence = lowestConfidence ? `${lowestConfidence[0].toUpperCase()}${lowestConfidence.slice(1)}` : "Ready";
-  const detail = sectionCount > 0 ? `${sectionCount} section${sectionCount === 1 ? "" : "s"}` : "Local analysis";
+  const confidence = lowestConfidence ? `${lowestConfidence[0].toUpperCase()}${lowestConfidence.slice(1)}` : t("metricConfidenceReady");
+  const detail = sectionCountDetail(t, sectionCount);
 
   return (
     <MetricCard
       icon={<Gauge className="size-5" aria-hidden="true" />}
-      label="Confidence"
+      label={t("metricConfidenceLabel")}
       value={confidence}
       detail={detail}
       accent="text-emerald-300"
@@ -204,12 +215,12 @@ function ConfidenceMetric({ song }: { song: RehearsalSong | null }) {
 }
 
 /** Documented. */
-function priorityLabel(song: RehearsalSong | null): string {
+function priorityLabel(song: RehearsalSong | null, t: ReturnType<typeof createTranslator>): string {
   const firstFocus = song?.exportSummary?.focusSections?.[0];
   if (firstFocus) {
     return firstFocus;
   }
-  return song?.sections?.[0]?.label ?? "Pick track";
+  return song?.sections?.[0]?.label ?? t("metricPriorityFallback");
 }
 
 /** Documented. */
@@ -431,7 +442,7 @@ export function App() {
       setJobStatus(null);
     } catch (e) {
       if (!isUserCancellation(e)) {
-        setJobError(`Failed to load project: ${safeErrorDetail(e, "The selected project could not be loaded.")}`);
+        setJobError(`${t("loadProjectFailedPrefix")}: ${safeErrorDetail(e, t("loadProjectFailedFallback"))}`);
       }
     }
   };
@@ -442,7 +453,7 @@ export function App() {
       await saveProject(jobResult!);
     } catch (e) {
       if (!isUserCancellation(e)) {
-        setJobError(`Failed to save project: ${safeErrorDetail(e, "The project could not be saved.")}`);
+        setJobError(`${t("saveProjectFailedPrefix")}: ${safeErrorDetail(e, t("saveProjectFailedFallback"))}`);
       }
     }
   };
@@ -480,46 +491,50 @@ export function App() {
           </div>
 
           <div className="mb-9 flex items-center gap-3">
-            <BandScopeMark />
+            <BandScopeMark ariaLabel={t("brandMarkAriaLabel")} />
             <div>
               <div className="text-2xl font-black tracking-tight">
                 Band<span className="text-cyan-300">Scope</span>
               </div>
               <div className="text-xs font-semibold uppercase text-slate-400">
-                Rehearsal cockpit
+                {t("rehearsalCockpit")}
               </div>
             </div>
           </div>
 
-          <nav aria-label="Primary rehearsal views" className="space-y-2">
-            {NAV_ITEMS.map(({ label, icon: Icon, active }) => (
-              <button
-                key={label}
-                type="button"
-                aria-current={active ? "page" : undefined}
-                aria-disabled={active ? undefined : true}
-                disabled={!active}
-                title={active ? undefined : "Coming soon"}
-                className={`flex min-h-11 w-full items-center gap-3 rounded-xl px-3 text-left text-sm font-semibold transition focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300 ${
-                  active
-                    ? "bg-blue-600/70 text-white shadow-[0_12px_30px_rgba(37,99,235,0.32)]"
-                    : "cursor-not-allowed text-slate-500 opacity-70"
-                }`}
-              >
-                <Icon className="size-5" aria-hidden="true" />
-                {label}
-              </button>
-            ))}
+          <nav aria-label={t("primaryRehearsalViewsAriaLabel")} className="space-y-2">
+            {NAV_ITEMS.map(({ labelKey, icon: Icon, active }) => {
+              const label = t(labelKey as TranslationKey);
+
+              return (
+                <button
+                  key={labelKey}
+                  type="button"
+                  aria-current={active ? "page" : undefined}
+                  aria-disabled={active ? undefined : true}
+                  disabled={!active}
+                  title={active ? undefined : t("comingSoon")}
+                  className={`flex min-h-11 w-full items-center gap-3 rounded-xl px-3 text-left text-sm font-semibold transition focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300 ${
+                    active
+                      ? "bg-blue-600/70 text-white shadow-[0_12px_30px_rgba(37,99,235,0.32)]"
+                      : "cursor-not-allowed text-slate-500 opacity-70"
+                  }`}
+                >
+                  <Icon className="size-5" aria-hidden="true" />
+                  {label}
+                </button>
+              );
+            })}
           </nav>
 
           <div className="mt-auto space-y-5">
             <div className="rounded-2xl border border-white/10 bg-white/[0.04] p-4">
               <div className="flex items-center gap-2 text-sm font-semibold text-slate-200">
                 <CloudOff className="size-4 text-cyan-300" aria-hidden="true" />
-                Local-first
+                {t("localFirst")}
               </div>
               <p className="mt-2 text-sm leading-6 text-slate-400">
-                Your rehearsal map stays on this device. Project files stay local. YouTube only leaves the app when you choose import.
+                {t("localFirstDetail")}
               </p>
               <div className="mt-3 h-14 overflow-hidden rounded-xl bg-[linear-gradient(90deg,rgba(34,211,238,.12),rgba(124,58,237,.12))]">
                 <div className="flex h-full items-end gap-0.5 px-2 pb-1" aria-hidden="true">
@@ -535,14 +550,14 @@ export function App() {
             </div>
 
             <div className="flex items-center justify-between text-slate-400">
-              <span tabIndex={0} role="button" aria-disabled="true" title="Settings coming soon" className="inline-block cursor-not-allowed rounded-xl focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300">
-                <span className="sr-only">Settings coming soon</span>
+              <span tabIndex={0} role="button" aria-disabled="true" title={t("settingsComingSoon")} className="inline-block cursor-not-allowed rounded-xl focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300">
+                <span className="sr-only">{t("settingsComingSoon")}</span>
                 <button type="button" disabled aria-hidden="true" className="pointer-events-none rounded-xl p-2 text-slate-600 transition">
                   <Settings className="size-5" aria-hidden="true" />
                 </button>
               </span>
-              <span tabIndex={0} role="button" aria-disabled="true" title="Help coming soon" className="inline-block cursor-not-allowed rounded-xl focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300">
-                <span className="sr-only">Help coming soon</span>
+              <span tabIndex={0} role="button" aria-disabled="true" title={t("helpComingSoon")} className="inline-block cursor-not-allowed rounded-xl focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300">
+                <span className="sr-only">{t("helpComingSoon")}</span>
                 <button type="button" disabled aria-hidden="true" className="pointer-events-none rounded-xl p-2 text-slate-600 transition">
                   <CircleHelp className="size-5" aria-hidden="true" />
                 </button>
@@ -552,37 +567,41 @@ export function App() {
         </aside>
 
         <main id="main-content" className="max-h-screen min-w-0 flex-1 overflow-y-auto px-4 py-4 sm:px-6 lg:px-8">
-          <nav aria-label="Compact rehearsal views" className="mb-4 flex gap-2 overflow-x-auto rounded-2xl border border-white/10 bg-slate-950/72 p-2 backdrop-blur-xl lg:hidden">
-            {NAV_ITEMS.map(({ label, icon: Icon, active }) => (
-              <button
-                key={label}
-                type="button"
-                aria-current={active ? "page" : undefined}
-                aria-label={`${label} compact view`}
-                aria-disabled={active ? undefined : true}
-                disabled={!active}
-                title={active ? undefined : "Coming soon"}
-                className={`inline-flex min-h-10 shrink-0 items-center gap-2 rounded-xl px-3 text-sm font-semibold transition focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300 ${
-                  active ? "bg-blue-600/70 text-white" : "cursor-not-allowed text-slate-500 opacity-70"
-                }`}
-              >
-                <Icon className="size-4" aria-hidden="true" />
-                {label}
-              </button>
-            ))}
+          <nav aria-label={t("compactRehearsalViewsAriaLabel")} className="mb-4 flex gap-2 overflow-x-auto rounded-2xl border border-white/10 bg-slate-950/72 p-2 backdrop-blur-xl lg:hidden">
+            {NAV_ITEMS.map(({ labelKey, icon: Icon, active }) => {
+              const label = t(labelKey as TranslationKey);
+
+              return (
+                <button
+                  key={labelKey}
+                  type="button"
+                  aria-current={active ? "page" : undefined}
+                  aria-label={`${label} ${t("compactViewSuffix")}`}
+                  aria-disabled={active ? undefined : true}
+                  disabled={!active}
+                  title={active ? undefined : t("comingSoon")}
+                  className={`inline-flex min-h-10 shrink-0 items-center gap-2 rounded-xl px-3 text-sm font-semibold transition focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300 ${
+                    active ? "bg-blue-600/70 text-white" : "cursor-not-allowed text-slate-500 opacity-70"
+                  }`}
+                >
+                  <Icon className="size-4" aria-hidden="true" />
+                  {label}
+                </button>
+              );
+            })}
           </nav>
 
-          <section aria-label="Source controls" className="mb-4 rounded-3xl border border-white/10 bg-slate-950/72 p-4 shadow-[0_18px_60px_rgba(0,0,0,0.25)] backdrop-blur-xl">
+          <section aria-label={t("sourceControlsAriaLabel")} className="mb-4 rounded-3xl border border-white/10 bg-slate-950/72 p-4 shadow-[0_18px_60px_rgba(0,0,0,0.25)] backdrop-blur-xl">
             <div className="grid gap-4 2xl:grid-cols-[1.4fr_minmax(0,1fr)_auto] 2xl:items-center">
               <div>
                 <p className="text-xs font-semibold uppercase tracking-[0.26em] text-cyan-300">
-                  {jobResult ? "READY • REHEARSAL" : "SYNCED • LOCAL"}
+                  {jobResult ? t("statusReadyRehearsal") : t("statusSyncedLocal")}
                 </p>
                 <h1 className="mt-2 text-3xl font-black tracking-tight text-white sm:text-4xl">
-                  {jobResult ? "Rehearsal Console" : "Workspace Home"}
+                  {jobResult ? t("rehearsalConsoleTitle") : t("workspaceHomeTitle")}
                 </h1>
                 <p className="mt-2 max-w-2xl text-sm leading-6 text-slate-400">
-                  {jobResult?.exportSummary?.headline ?? "Turn a song into a practical rehearsal view."}
+                  {jobResult?.exportSummary?.headline ?? t("workspaceHomeSummary")}
                 </p>
               </div>
 
@@ -592,7 +611,7 @@ export function App() {
                   disabled={analysisInFlight || isStarting || isImporting}
                   variant="secondary"
                   className="min-h-11 w-full border border-cyan-300/20 bg-cyan-300/10 font-semibold text-cyan-50 hover:bg-cyan-300/20 xl:w-auto"
-                  aria-label="Choose local audio"
+                  aria-label={t("chooseLocalAudio")}
                 >
                   <Upload className="mr-2 size-4" aria-hidden="true" />
                   {t("chooseLocalAudio")}
@@ -608,7 +627,7 @@ export function App() {
                       onChange={(e) => setYoutubeUrl(e.target.value)}
                       disabled={analysisInFlight || isStarting || isImporting}
                       className="h-10 flex-1 border-0 bg-transparent text-slate-100 placeholder:text-slate-500 focus-visible:ring-cyan-300"
-                      aria-label="YouTube URL"
+                      aria-label={t("youtubeUrlAriaLabel")}
                     />
                   </div>
                   <Button
@@ -616,7 +635,7 @@ export function App() {
                     disabled={!youtubeUrl || analysisInFlight || isStarting || isImporting}
                     variant="outline"
                     className="min-h-10 w-full border-white/10 bg-white/5 font-semibold text-slate-100 hover:bg-white/10 hover:text-white sm:w-auto"
-                    aria-label="Import YouTube"
+                    aria-label={t("importYoutube")}
                   >
                     {isImporting && <Loader2 className="mr-2 size-4 animate-spin" aria-hidden="true" />}
                     {isImporting ? t("importingYoutube") : t("importYoutube")}
@@ -630,31 +649,31 @@ export function App() {
                   disabled={analysisInFlight || isStarting}
                   variant="outline"
                   className="min-h-11 border-white/10 bg-white/5 font-semibold text-slate-100 hover:bg-white/10 hover:text-white"
-                  aria-label="Open Project"
+                  aria-label={t("openProject")}
                 >
                   <FolderOpen className="mr-2 size-4" aria-hidden="true" />
-                  Open Project
+                  {t("openProject")}
                 </Button>
                 {jobResult ? (
                   <Button
                     onClick={handleSaveProject}
                     variant="outline"
                     className="min-h-11 border-white/10 bg-white/5 font-semibold text-slate-100 hover:bg-white/10 hover:text-white"
-                    aria-label="Save Project"
+                    aria-label={t("saveProject")}
                   >
                     <Save className="mr-2 size-4" aria-hidden="true" />
-                    Save Project
+                    {t("saveProject")}
                   </Button>
                 ) : (
-                  <span tabIndex={0} role="button" aria-disabled="true" title="Analyze a song to enable saving" className="inline-block cursor-not-allowed rounded-xl focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300">
+                  <span tabIndex={0} role="button" aria-disabled="true" title={t("saveRequiresAnalysis")} className="inline-block cursor-not-allowed rounded-xl focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cyan-300">
                     <Button
                       disabled
                       variant="outline"
                       className="min-h-11 border-white/10 bg-white/5 font-semibold text-slate-100"
-                      aria-label="Save Project"
+                      aria-label={t("saveProject")}
                     >
                       <Save className="mr-2 size-4" aria-hidden="true" />
-                      Save Project
+                      {t("saveProject")}
                     </Button>
                   </span>
                 )}
@@ -677,7 +696,7 @@ export function App() {
 
             <div className="mt-4 flex flex-col gap-3 border-t border-white/10 pt-4 text-sm text-slate-400 lg:flex-row lg:items-center lg:justify-between">
               <div>
-                <span className="mr-2 text-xs font-bold uppercase tracking-[0.22em] text-slate-400">Formats</span>
+                <span className="mr-2 text-xs font-bold uppercase tracking-[0.22em] text-slate-400">{t("formatsLabel")}</span>
                 {SUPPORTED_AUDIO_FORMATS.join(", ")}
               </div>
 
@@ -706,7 +725,7 @@ export function App() {
                     </div>
                     {jobStatus.progressPercent !== undefined && (
                       <Progress
-                        aria-label="Analysis progress"
+                        aria-label={t("analysisProgressAriaLabel")}
                         value={renderedProgressPercent ?? jobStatus.progressPercent}
                         className="mt-2"
                       />
@@ -723,12 +742,12 @@ export function App() {
             </div>
           </section>
 
-          <header aria-label="Analysis summary" className="mb-4 grid gap-3 md:grid-cols-2 xl:grid-cols-5">
-            <MetricCard icon={<Clock3 className="size-5" aria-hidden="true" />} label="Tempo" value="Pending" detail="Awaiting reliable detection" accent="text-sky-300" />
-            <MetricCard icon={<KeyRound className="size-5" aria-hidden="true" />} label="Key" value="Pending" detail="No trusted key yet" accent="text-cyan-300" />
-            <MetricCard icon={<Wand2 className="size-5" aria-hidden="true" />} label="Transpose" value="Pending" detail="Review after key detection" accent="text-blue-300" />
-            <ConfidenceMetric song={jobResult} />
-            <MetricCard icon={<Star className="size-5 fill-amber-300 text-amber-300" aria-hidden="true" />} label="Priority" value={priorityLabel(jobResult)} detail={jobResult?.exportSummary?.headline ?? "Choose or open audio"} accent="text-amber-300" />
+          <header aria-label={t("analysisSummaryAriaLabel")} className="mb-4 grid gap-3 md:grid-cols-2 xl:grid-cols-5">
+            <MetricCard icon={<Clock3 className="size-5" aria-hidden="true" />} label={t("metricTempoLabel")} value={t("metricPendingValue")} detail={t("metricTempoPendingDetail")} accent="text-sky-300" />
+            <MetricCard icon={<KeyRound className="size-5" aria-hidden="true" />} label={t("metricKeyLabel")} value={t("metricPendingValue")} detail={t("metricKeyPendingDetail")} accent="text-cyan-300" />
+            <MetricCard icon={<Wand2 className="size-5" aria-hidden="true" />} label={t("metricTransposeLabel")} value={t("metricPendingValue")} detail={t("metricTransposePendingDetail")} accent="text-blue-300" />
+            <ConfidenceMetric song={jobResult} t={t} />
+            <MetricCard icon={<Star className="size-5 fill-amber-300 text-amber-300" aria-hidden="true" />} label={t("metricPriorityLabel")} value={priorityLabel(jobResult, t)} detail={jobResult?.exportSummary?.headline ?? t("metricPriorityPendingDetail")} accent="text-amber-300" />
           </header>
 
           <section className="animate-in fade-in duration-500 ease-out fill-mode-both">
diff --git a/apps/desktop/src/locales/en/common.json b/apps/desktop/src/locales/en/common.json
index 4e098662..95e65088 100644
--- a/apps/desktop/src/locales/en/common.json
+++ b/apps/desktop/src/locales/en/common.json
@@ -65,5 +65,56 @@
   "youtubePlaceholder": "YouTube URL...",
   "importYoutube": "Import YouTube",
   "importingYoutube": "Importing...",
-  "youtubeImportFailed": "Failed to import YouTube URL."
+  "youtubeImportFailed": "Failed to import YouTube URL.",
+  "brandMarkAriaLabel": "BandScope circular equalizer mark",
+  "rehearsalCockpit": "Rehearsal cockpit",
+  "navWorkspace": "Workspace",
+  "navImport": "Import",
+  "navExport": "Export",
+  "navSections": "Sections",
+  "navRoles": "Roles",
+  "navStemLab": "Stem Lab",
+  "navCues": "Cues",
+  "navTranspose": "Transpose",
+  "navNotes": "Notes",
+  "primaryRehearsalViewsAriaLabel": "Primary rehearsal views",
+  "compactRehearsalViewsAriaLabel": "Compact rehearsal views",
+  "compactViewSuffix": "compact view",
+  "comingSoon": "Coming soon",
+  "settingsComingSoon": "Settings coming soon",
+  "helpComingSoon": "Help coming soon",
+  "localFirst": "Local-first",
+  "localFirstDetail": "Your rehearsal map stays on this device. Project files stay local. YouTube only leaves the app when you choose import.",
+  "sourceControlsAriaLabel": "Source controls",
+  "statusReadyRehearsal": "READY • REHEARSAL",
+  "statusSyncedLocal": "SYNCED • LOCAL",
+  "rehearsalConsoleTitle": "Rehearsal Console",
+  "workspaceHomeTitle": "Workspace Home",
+  "workspaceHomeSummary": "Turn a song into a practical rehearsal view.",
+  "youtubeUrlAriaLabel": "YouTube URL",
+  "openProject": "Open Project",
+  "saveProject": "Save Project",
+  "saveRequiresAnalysis": "Analyze a song to enable saving",
+  "formatsLabel": "Formats",
+  "analysisProgressAriaLabel": "Analysis progress",
+  "analysisSummaryAriaLabel": "Analysis summary",
+  "metricTempoLabel": "Tempo",
+  "metricKeyLabel": "Key",
+  "metricTransposeLabel": "Transpose",
+  "metricConfidenceLabel": "Confidence",
+  "metricPriorityLabel": "Priority",
+  "metricPendingValue": "Pending",
+  "metricTempoPendingDetail": "Awaiting reliable detection",
+  "metricKeyPendingDetail": "No trusted key yet",
+  "metricTransposePendingDetail": "Review after key detection",
+  "metricConfidenceReady": "Ready",
+  "metricConfidenceLocalAnalysis": "Local analysis",
+  "metricConfidenceSectionSingular": "section",
+  "metricConfidenceSectionPlural": "sections",
+  "metricPriorityFallback": "Pick track",
+  "metricPriorityPendingDetail": "Choose or open audio",
+  "loadProjectFailedPrefix": "Failed to load project",
+  "loadProjectFailedFallback": "The selected project could not be loaded.",
+  "saveProjectFailedPrefix": "Failed to save project",
+  "saveProjectFailedFallback": "The project could not be saved."
 }
diff --git a/apps/desktop/src/locales/ko/common.json b/apps/desktop/src/locales/ko/common.json
index 2b59d5ee..8ab782dc 100644
--- a/apps/desktop/src/locales/ko/common.json
+++ b/apps/desktop/src/locales/ko/common.json
@@ -65,5 +65,56 @@
   "youtubePlaceholder": "유튜브 URL...",
   "importYoutube": "유튜브 가져오기",
   "importingYoutube": "가져오는 중...",
-  "youtubeImportFailed": "유튜브 URL 가져오기에 실패했습니다."
+  "youtubeImportFailed": "유튜브 URL 가져오기에 실패했습니다.",
+  "brandMarkAriaLabel": "BandScope 원형 이퀄라이저 마크",
+  "rehearsalCockpit": "합주 컨트롤룸",
+  "navWorkspace": "작업 공간",
+  "navImport": "가져오기",
+  "navExport": "내보내기",
+  "navSections": "구간",
+  "navRoles": "역할",
+  "navStemLab": "스템 랩",
+  "navCues": "큐",
+  "navTranspose": "전조",
+  "navNotes": "노트",
+  "primaryRehearsalViewsAriaLabel": "주요 합주 보기",
+  "compactRehearsalViewsAriaLabel": "간단 합주 보기",
+  "compactViewSuffix": "간단 보기",
+  "comingSoon": "곧 제공됩니다",
+  "settingsComingSoon": "설정은 곧 제공됩니다",
+  "helpComingSoon": "도움말은 곧 제공됩니다",
+  "localFirst": "로컬 우선",
+  "localFirstDetail": "합주 지도는 이 기기에 머뭅니다. 프로젝트 파일은 로컬에 저장됩니다. 유튜브는 가져오기를 선택할 때만 앱 밖으로 나갑니다.",
+  "sourceControlsAriaLabel": "소스 컨트롤",
+  "statusReadyRehearsal": "준비됨 • 합주",
+  "statusSyncedLocal": "동기화됨 • 로컬",
+  "rehearsalConsoleTitle": "합주 콘솔",
+  "workspaceHomeTitle": "작업 공간 홈",
+  "workspaceHomeSummary": "곡을 실전 합주 보기로 바꿉니다.",
+  "youtubeUrlAriaLabel": "유튜브 URL",
+  "openProject": "프로젝트 열기",
+  "saveProject": "프로젝트 저장",
+  "saveRequiresAnalysis": "곡을 분석하면 저장할 수 있습니다",
+  "formatsLabel": "형식",
+  "analysisProgressAriaLabel": "분석 진행률",
+  "analysisSummaryAriaLabel": "분석 요약",
+  "metricTempoLabel": "템포",
+  "metricKeyLabel": "키",
+  "metricTransposeLabel": "전조",
+  "metricConfidenceLabel": "신뢰도",
+  "metricPriorityLabel": "우선순위",
+  "metricPendingValue": "대기 중",
+  "metricTempoPendingDetail": "신뢰 가능한 감지 대기",
+  "metricKeyPendingDetail": "아직 신뢰할 키 없음",
+  "metricTransposePendingDetail": "키 감지 후 검토",
+  "metricConfidenceReady": "준비됨",
+  "metricConfidenceLocalAnalysis": "로컬 분석",
+  "metricConfidenceSectionSingular": "구간",
+  "metricConfidenceSectionPlural": "구간",
+  "metricPriorityFallback": "트랙 선택",
+  "metricPriorityPendingDetail": "오디오를 선택하거나 여세요",
+  "loadProjectFailedPrefix": "프로젝트를 불러오지 못했습니다",
+  "loadProjectFailedFallback": "선택한 프로젝트를 불러올 수 없습니다.",
+  "saveProjectFailedPrefix": "프로젝트를 저장하지 못했습니다",
+  "saveProjectFailedFallback": "프로젝트를 저장할 수 없습니다."
 }