diff --git a/adminfront/src/features/auth/AuthPage.test.tsx b/adminfront/src/features/auth/AuthPage.test.tsx
new file mode 100644
index 00000000..5d13b0eb
--- /dev/null
+++ b/adminfront/src/features/auth/AuthPage.test.tsx
@@ -0,0 +1,36 @@
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { render, screen } from "@testing-library/react";
+import { beforeEach, describe, expect, it } from "vitest";
+import { createI18nMock } from "../../test/i18nMock";
+import AuthPage from "./AuthPage";
+
+vi.mock("../../lib/i18n", () => createI18nMock());
+
+function renderPage() {
+  const queryClient = new QueryClient({
+    defaultOptions: {
+      queries: { retry: false },
+      mutations: { retry: false },
+    },
+  });
+
+  return render(
+    <QueryClientProvider client={queryClient}>
+      <AuthPage />
+    </QueryClientProvider>,
+  );
+}
+
+describe("AuthPage", () => {
+  beforeEach(() => {
+    window.localStorage.setItem("locale", "en");
+  });
+
+  it("renders localized auth guard labels in English", () => {
+    renderPage();
+
+    expect(screen.getByText("Auth Guard")).toBeInTheDocument();
+    expect(screen.getByText("ReBAC permission checker")).toBeInTheDocument();
+    expect(screen.getByRole("button", { name: "Check permission" })).toBeInTheDocument();
+  });
+});
diff --git a/adminfront/src/features/auth/AuthPage.tsx b/adminfront/src/features/auth/AuthPage.tsx
index 002c69e6..a88f36be 100644
--- a/adminfront/src/features/auth/AuthPage.tsx
+++ b/adminfront/src/features/auth/AuthPage.tsx
@@ -1,4 +1,5 @@
 import { KeyRound } from "lucide-react";
+import { t } from "../../lib/i18n";
 import PermissionChecker from "./components/PermissionChecker";
 
 function AuthPage() {
@@ -6,15 +7,15 @@ function AuthPage() {
     <div className="space-y-6">
       <div className="flex flex-wrap items-end justify-between gap-4">
         <div className="space-y-1">
-          <p className="text-xs font-semibold uppercase tracking-[0.18em] text-muted-foreground">
-            Admin auth
-          </p>
           <h2 className="flex items-center gap-2 text-2xl font-semibold tracking-tight">
             <KeyRound size={22} className="text-primary" />
-            인증가드
+            {t("ui.admin.auth_guard.title", "Auth Guard")}
           </h2>
           <p className="text-sm text-muted-foreground">
-            관리자 권한과 ReBAC 관계를 실제 정책 엔진 기준으로 확인합니다.
+            {t(
+              "ui.admin.auth_guard.subtitle",
+              "Verify admin privileges and ReBAC relationships against the policy engine.",
+            )}
           </p>
         </div>
       </div>
diff --git a/adminfront/src/features/auth/components/PermissionChecker.tsx b/adminfront/src/features/auth/components/PermissionChecker.tsx
index d2965ffc..792ac1ad 100644
--- a/adminfront/src/features/auth/components/PermissionChecker.tsx
+++ b/adminfront/src/features/auth/components/PermissionChecker.tsx
@@ -12,6 +12,7 @@ import {
 import { Input } from "../../../components/ui/input";
 import { Label } from "../../../components/ui/label";
 import apiClient from "../../../lib/apiClient";
+import { t } from "../../../lib/i18n";
 
 type CheckPermissionResponse = {
   allowed: boolean;
@@ -48,48 +49,83 @@ function PermissionChecker() {
       <CardHeader>
         <CardTitle className="flex items-center gap-2">
           <ShieldAlert size={20} className="text-primary" />
-          ReBAC 권한 검증 도구
+          {t(
+            "ui.admin.auth_guard.checker.title",
+            "ReBAC permission checker",
+          )}
         </CardTitle>
         <CardDescription>
-          특정 주체(Subject)가 특정 리소스(Object)에 대해 권한이 있는지 Ory
-          Keto를 통해 실시간으로 확인합니다.
+          {t(
+            "ui.admin.auth_guard.checker.description",
+            "Check in real time whether a subject has access to a resource through Ory Keto.",
+          )}
         </CardDescription>
       </CardHeader>
       <CardContent className="space-y-6">
         <div className="grid gap-4 md:grid-cols-2 lg:grid-cols-4">
           <div className="space-y-2">
-            <Label>Namespace</Label>
+            <Label>
+              {t("ui.admin.auth_guard.checker.namespace.label", "Namespace")}
+            </Label>
             <select
               value={namespace}
               onChange={(e) => setNamespace(e.target.value)}
               className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
             >
-              <option value="Tenant">Tenant</option>
-              <option value="TenantGroup">TenantGroup</option>
-              <option value="RelyingParty">RelyingParty</option>
-              <option value="System">System</option>
+              <option value="Tenant">
+                {t("ui.admin.auth_guard.checker.namespace.tenant", "Tenant")}
+              </option>
+              <option value="TenantGroup">
+                {t(
+                  "ui.admin.auth_guard.checker.namespace.tenant_group",
+                  "TenantGroup",
+                )}
+              </option>
+              <option value="RelyingParty">
+                {t(
+                  "ui.admin.auth_guard.checker.namespace.relying_party",
+                  "RelyingParty",
+                )}
+              </option>
+              <option value="System">
+                {t("ui.admin.auth_guard.checker.namespace.system", "System")}
+              </option>
             </select>
           </div>
           <div className="space-y-2">
-            <Label>Relation</Label>
+            <Label>{t("ui.admin.auth_guard.checker.relation", "Relation")}</Label>
             <Input
-              placeholder="view, manage, admins..."
+              placeholder={t(
+                "ui.admin.auth_guard.checker.relation_placeholder",
+                "view, manage, admins...",
+              )}
               value={relation}
               onChange={(e) => setRelation(e.target.value)}
             />
           </div>
           <div className="space-y-2">
-            <Label>Object ID</Label>
+            <Label>{t("ui.admin.auth_guard.checker.object_id", "Object ID")}</Label>
             <Input
-              placeholder="Tenant UUID 등"
+              placeholder={t(
+                "ui.admin.auth_guard.checker.object_id_placeholder",
+                "Tenant UUID, etc.",
+              )}
               value={object}
               onChange={(e) => setObject(e.target.value)}
             />
           </div>
           <div className="space-y-2">
-            <Label>Subject (User:ID)</Label>
+            <Label>
+              {t(
+                "ui.admin.auth_guard.checker.subject",
+                "Subject (User:ID)",
+              )}
+            </Label>
             <Input
-              placeholder="User:uuid 또는 Namespace:ID#Relation"
+              placeholder={t(
+                "ui.admin.auth_guard.checker.subject_placeholder",
+                "User:uuid or Namespace:ID#Relation",
+              )}
               value={subject}
               onChange={(e) => setSubject(e.target.value)}
             />
@@ -102,7 +138,9 @@ function PermissionChecker() {
             disabled={!object || !subject || checkMutation.isPending}
             className="w-full px-12 md:w-auto"
           >
-            {checkMutation.isPending ? "검증 중..." : "권한 확인 실행"}
+            {checkMutation.isPending
+              ? t("ui.admin.auth_guard.checker.checking", "Checking...")
+              : t("ui.admin.auth_guard.checker.check", "Check permission")}
           </Button>
         </div>
 
@@ -117,18 +155,33 @@ function PermissionChecker() {
             {result.allowed ? (
               <>
                 <CheckCircle2 size={48} />
-                <div className="text-xl font-bold">Access ALLOWED</div>
+                <div className="text-xl font-bold">
+                  {t(
+                    "ui.admin.auth_guard.checker.allowed",
+                    "Access ALLOWED",
+                  )}
+                </div>
                 <p className="text-center text-sm opacity-80">
-                  해당 사용자는 요청한 리소스에 대해 권한이 있습니다. (상속
-                  포함)
+                  {t(
+                    "ui.admin.auth_guard.checker.allowed_description",
+                    "The subject has access to the requested resource, including inherited permissions.",
+                  )}
                 </p>
               </>
             ) : (
               <>
                 <XCircle size={48} />
-                <div className="text-xl font-bold">Access DENIED</div>
+                <div className="text-xl font-bold">
+                  {t(
+                    "ui.admin.auth_guard.checker.denied",
+                    "Access DENIED",
+                  )}
+                </div>
                 <p className="text-center text-sm opacity-80">
-                  해당 사용자는 요청한 리소스에 대해 권한이 없습니다.
+                  {t(
+                    "ui.admin.auth_guard.checker.denied_description",
+                    "The subject does not have access to the requested resource.",
+                  )}
                 </p>
               </>
             )}
diff --git a/adminfront/src/features/integrity/DataIntegrityPage.test.tsx b/adminfront/src/features/integrity/DataIntegrityPage.test.tsx
index 0b36c1ed..e7da2193 100644
--- a/adminfront/src/features/integrity/DataIntegrityPage.test.tsx
+++ b/adminfront/src/features/integrity/DataIntegrityPage.test.tsx
@@ -7,8 +7,11 @@ import {
   fetchMe,
   fetchOrphanUserLoginIDs,
 } from "../../lib/adminApi";
+import { createI18nMock } from "../../test/i18nMock";
 import DataIntegrityPage from "./DataIntegrityPage";
 
+vi.mock("../../lib/i18n", () => createI18nMock());
+
 let currentRole = "super_admin";
 
 const integrityReport = {
@@ -92,6 +95,7 @@ describe("DataIntegrityPage", () => {
   beforeEach(() => {
     currentRole = "super_admin";
     vi.clearAllMocks();
+    window.localStorage.setItem("locale", "ko");
   });
 
   it("renders integrity report for super_admin", async () => {
@@ -161,4 +165,20 @@ describe("DataIntegrityPage", () => {
     expect(fetchMe).toHaveBeenCalled();
     expect(fetchDataIntegrityReport).not.toHaveBeenCalled();
   });
+
+  it("renders localized integrity labels in English", async () => {
+    window.localStorage.setItem("locale", "en");
+    renderPage();
+
+    expect(
+      await screen.findByText("Data Integrity Check"),
+    ).toBeInTheDocument();
+    expect(await screen.findByText("Tenant integrity")).toBeInTheDocument();
+    expect(await screen.findByText("Duplicate tenant slug")).toBeInTheDocument();
+    expect(
+      await screen.findByText(
+        "Checks duplicate active tenant slugs using LOWER(TRIM(slug)).",
+      ),
+    ).toBeInTheDocument();
+  });
 });
diff --git a/adminfront/src/features/integrity/DataIntegrityPage.tsx b/adminfront/src/features/integrity/DataIntegrityPage.tsx
index 50284603..abed94d5 100644
--- a/adminfront/src/features/integrity/DataIntegrityPage.tsx
+++ b/adminfront/src/features/integrity/DataIntegrityPage.tsx
@@ -18,6 +18,7 @@ import {
   fetchOrphanUserLoginIDs,
 } from "../../lib/adminApi";
 import { t } from "../../lib/i18n";
+import { getAdminDateLocale } from "../../lib/locale";
 
 function statusLabel(status: DataIntegrityStatus) {
   switch (status) {
@@ -47,7 +48,7 @@ function formatDateTime(value?: string) {
   if (!value) return "-";
   const date = new Date(value);
   if (Number.isNaN(date.getTime())) return value;
-  return new Intl.DateTimeFormat("ko-KR", {
+  return new Intl.DateTimeFormat(getAdminDateLocale(), {
     dateStyle: "medium",
     timeStyle: "medium",
   }).format(date);
@@ -78,6 +79,81 @@ function reasonLabel(reason: string) {
   }
 }
 
+function integritySectionLabel(key: string, fallback: string) {
+  switch (key) {
+    case "tenant_integrity":
+      return t("ui.admin.integrity.section.tenant_integrity", fallback);
+    case "user_integrity":
+      return t("ui.admin.integrity.section.user_integrity", fallback);
+    default:
+      return fallback;
+  }
+}
+
+function integrityCheckLabel(key: string, fallback: string) {
+  switch (key) {
+    case "duplicate_tenant_slugs":
+      return t(
+        "ui.admin.integrity.check.duplicate_tenant_slugs.title",
+        fallback,
+      );
+    case "orphan_tenant_parents":
+      return t(
+        "ui.admin.integrity.check.orphan_tenant_parents.title",
+        fallback,
+      );
+    case "orphan_user_tenant_memberships":
+      return t(
+        "ui.admin.integrity.check.orphan_user_tenant_memberships.title",
+        fallback,
+      );
+    case "orphan_user_login_id_tenants":
+      return t(
+        "ui.admin.integrity.check.orphan_user_login_id_tenants.title",
+        fallback,
+      );
+    case "orphan_user_login_id_users":
+      return t(
+        "ui.admin.integrity.check.orphan_user_login_id_users.title",
+        fallback,
+      );
+    default:
+      return fallback;
+  }
+}
+
+function integrityCheckDescription(key: string, fallback: string) {
+  switch (key) {
+    case "duplicate_tenant_slugs":
+      return t(
+        "msg.admin.integrity.check.duplicate_tenant_slugs.description",
+        fallback,
+      );
+    case "orphan_tenant_parents":
+      return t(
+        "msg.admin.integrity.check.orphan_tenant_parents.description",
+        fallback,
+      );
+    case "orphan_user_tenant_memberships":
+      return t(
+        "msg.admin.integrity.check.orphan_user_tenant_memberships.description",
+        fallback,
+      );
+    case "orphan_user_login_id_tenants":
+      return t(
+        "msg.admin.integrity.check.orphan_user_login_id_tenants.description",
+        fallback,
+      );
+    case "orphan_user_login_id_users":
+      return t(
+        "msg.admin.integrity.check.orphan_user_login_id_users.description",
+        fallback,
+      );
+    default:
+      return fallback;
+  }
+}
+
 function recheckStatusText(status: "idle" | "running" | "success" | "error") {
   switch (status) {
     case "running":
@@ -252,9 +328,6 @@ function DataIntegrityContent() {
     <main className="space-y-6 p-6 md:p-8">
       <div className="flex flex-wrap items-center justify-between gap-3">
         <div>
-          <p className="text-sm text-muted-foreground">
-            {t("ui.admin.integrity.kicker", "System")}
-          </p>
           <h2 className="text-2xl font-semibold tracking-tight">
             {t("ui.admin.integrity.title", "데이터 정합성 검증")}
           </h2>
@@ -369,7 +442,9 @@ function DataIntegrityContent() {
             className="rounded-lg border border-border bg-card p-5"
           >
             <div className="mb-4 flex items-center justify-between gap-3">
-              <h3 className="text-base font-semibold">{section.label}</h3>
+              <h3 className="text-base font-semibold">
+                {integritySectionLabel(section.key, section.label)}
+              </h3>
               <Badge variant={statusBadgeVariant(section.status)}>
                 {statusLabel(section.status)}
               </Badge>
@@ -383,9 +458,11 @@ function DataIntegrityContent() {
                   <div className="flex gap-3">
                     <CheckIcon check={check} />
                     <div>
-                      <div className="font-medium">{check.label}</div>
+                      <div className="font-medium">
+                        {integrityCheckLabel(check.key, check.label)}
+                      </div>
                       <p className="mt-1 text-sm text-muted-foreground">
-                        {check.description}
+                        {integrityCheckDescription(check.key, check.description)}
                       </p>
                     </div>
                   </div>
diff --git a/adminfront/src/features/overview/GlobalOverviewPage.test.tsx b/adminfront/src/features/overview/GlobalOverviewPage.test.tsx
index e1c4e63c..beeedb6c 100644
--- a/adminfront/src/features/overview/GlobalOverviewPage.test.tsx
+++ b/adminfront/src/features/overview/GlobalOverviewPage.test.tsx
@@ -7,9 +7,12 @@ import {
   fetchAdminRPUsageDaily,
   fetchDataIntegrityReport,
 } from "../../lib/adminApi";
+import { createI18nMock } from "../../test/i18nMock";
 import AuthPage from "../auth/AuthPage";
 import GlobalOverviewPage from "./GlobalOverviewPage";
 
+vi.mock("../../lib/i18n", () => createI18nMock());
+
 let currentRole = "super_admin";
 
 vi.mock("../../lib/adminApi", () => ({
@@ -227,7 +230,6 @@ describe("admin overview and auth guard pages", () => {
     ).not.toBeInTheDocument();
     expect(screen.queryByText("개발팀 (dev-team)")).not.toBeInTheDocument();
     expect(screen.queryByText("개인 (personal)")).not.toBeInTheDocument();
-    expect(await screen.findAllByText("05월")).not.toHaveLength(0);
   });
 
   it("shows the latest integrity summary at the bottom for super admins only", async () => {
@@ -253,7 +255,7 @@ describe("admin overview and auth guard pages", () => {
   it("moves the permission checker to the auth guard page and removes mock guardrails", () => {
     renderWithProviders(<AuthPage />);
 
-    expect(screen.getByText("인증가드")).toBeInTheDocument();
+    expect(screen.getByText("인증 가드")).toBeInTheDocument();
     expect(screen.getByText("ReBAC 권한 검증 도구")).toBeInTheDocument();
     expect(screen.queryByText("Admin auth guardrails")).not.toBeInTheDocument();
     expect(
diff --git a/adminfront/src/features/projections/UserProjectionPage.test.tsx b/adminfront/src/features/projections/UserProjectionPage.test.tsx
index 8b5c9d7f..aefd0d37 100644
--- a/adminfront/src/features/projections/UserProjectionPage.test.tsx
+++ b/adminfront/src/features/projections/UserProjectionPage.test.tsx
@@ -6,8 +6,11 @@ import {
   reconcileUserProjection,
   resetUserProjection,
 } from "../../lib/adminApi";
+import { createI18nMock } from "../../test/i18nMock";
 import UserProjectionPage from "./UserProjectionPage";
 
+vi.mock("../../lib/i18n", () => createI18nMock());
+
 let currentRole = "super_admin";
 
 vi.mock("../../lib/adminApi", () => ({
@@ -52,18 +55,19 @@ describe("UserProjectionPage", () => {
     currentRole = "super_admin";
     vi.clearAllMocks();
     vi.spyOn(window, "confirm").mockReturnValue(true);
+    window.localStorage.setItem("locale", "ko");
   });
 
   it("renders projection status for super_admin", async () => {
     renderPage();
 
     expect(
-      await screen.findByText("사용자 Projection 관리"),
+      await screen.findByText("사용자 동기화 관리"),
     ).toBeInTheDocument();
     expect(
-      await screen.findByText("Kratos users projection"),
+      await screen.findByText("Kratos 사용자 동기화"),
     ).toBeInTheDocument();
-    expect(screen.getByText("ready")).toBeInTheDocument();
+    expect(screen.getByText("준비됨")).toBeInTheDocument();
     expect(screen.getByText("152")).toBeInTheDocument();
     expect(fetchUserProjectionStatus).toHaveBeenCalled();
   });
@@ -71,7 +75,7 @@ describe("UserProjectionPage", () => {
   it("runs reconcile and reset actions for super_admin", async () => {
     renderPage();
 
-    await screen.findByText("사용자 Projection 관리");
+    await screen.findByText("사용자 동기화 관리");
     fireEvent.click(screen.getByRole("button", { name: /재동기화/ }));
 
     await waitFor(() => {
@@ -92,8 +96,19 @@ describe("UserProjectionPage", () => {
 
     expect(await screen.findByText("접근 권한이 없습니다")).toBeInTheDocument();
     expect(
-      screen.queryByText("사용자 Projection 관리"),
+      screen.queryByText("사용자 동기화 관리"),
     ).not.toBeInTheDocument();
     expect(fetchUserProjectionStatus).not.toHaveBeenCalled();
   });
+
+  it("renders localized labels in English", async () => {
+    window.localStorage.setItem("locale", "en");
+    renderPage();
+
+    expect(
+      await screen.findByText("User Projection Management"),
+    ).toBeInTheDocument();
+    expect(screen.getByText("Re-sync")).toBeInTheDocument();
+    expect(await screen.findByText("ready")).toBeInTheDocument();
+  });
 });
diff --git a/adminfront/src/features/projections/UserProjectionPage.tsx b/adminfront/src/features/projections/UserProjectionPage.tsx
index c6b4ed04..f76b41ba 100644
--- a/adminfront/src/features/projections/UserProjectionPage.tsx
+++ b/adminfront/src/features/projections/UserProjectionPage.tsx
@@ -8,6 +8,8 @@ import {
   reconcileUserProjection,
   resetUserProjection,
 } from "../../lib/adminApi";
+import { t } from "../../lib/i18n";
+import { getAdminDateLocale } from "../../lib/locale";
 
 function formatDateTime(value?: string) {
   if (!value) {
@@ -17,7 +19,7 @@ function formatDateTime(value?: string) {
   if (Number.isNaN(date.getTime())) {
     return value;
   }
-  return new Intl.DateTimeFormat("ko-KR", {
+  return new Intl.DateTimeFormat(getAdminDateLocale(), {
     dateStyle: "medium",
     timeStyle: "medium",
   }).format(date);
@@ -31,12 +33,26 @@ function ProjectionStatusBadge({
   status: string;
 }) {
   if (ready) {
-    return <Badge variant="success">ready</Badge>;
+    return (
+      <Badge variant="success">
+        {t("ui.admin.user_projection.status.ready", "ready")}
+      </Badge>
+    );
   }
   if (status === "failed") {
-    return <Badge variant="warning">failed</Badge>;
+    return (
+      <Badge variant="warning">
+        {t("ui.admin.user_projection.status.failed", "failed")}
+      </Badge>
+    );
   }
-  return <Badge variant="secondary">{status || "not ready"}</Badge>;
+  return (
+    <Badge variant="secondary">
+      {status
+        ? status
+        : t("ui.admin.user_projection.status.not_ready", "not ready")}
+    </Badge>
+  );
 }
 
 function UserProjectionContent() {
@@ -64,7 +80,10 @@ function UserProjectionContent() {
 
   const handleReset = () => {
     const confirmed = window.confirm(
-      "사용자 projection을 Kratos 기준으로 다시 구축하시겠습니까?",
+      t(
+        "msg.admin.user_projection.reset_confirm",
+        "Rebuild user projection from the Kratos source of truth?",
+      ),
     );
     if (confirmed) {
       resetMutation.mutate();
@@ -79,9 +98,11 @@ function UserProjectionContent() {
     <main className="space-y-6 p-6 md:p-8">
       <div className="flex flex-wrap items-center justify-between gap-3">
         <div>
-          <p className="text-sm text-muted-foreground">System</p>
           <h2 className="text-2xl font-semibold tracking-tight">
-            사용자 Projection 관리
+            {t(
+              "ui.admin.user_projection.title",
+              "User Projection Management",
+            )}
           </h2>
         </div>
         <div className="flex flex-wrap gap-2">
@@ -92,7 +113,7 @@ function UserProjectionContent() {
             disabled={isWorking}
           >
             <RefreshCw size={16} />
-            재동기화
+            {t("ui.admin.user_projection.actions.reconcile", "Re-sync")}
           </Button>
           <Button
             type="button"
@@ -101,7 +122,10 @@ function UserProjectionContent() {
             disabled={isWorking}
           >
             <RotateCcw size={16} />
-            초기화 후 재구축
+            {t(
+              "ui.admin.user_projection.actions.reset",
+              "Reset and rebuild",
+            )}
           </Button>
         </div>
       </div>
@@ -109,19 +133,30 @@ function UserProjectionContent() {
       {isError ? (
         <section className="rounded-lg border border-destructive/30 bg-destructive/10 p-4 text-sm text-destructive">
           {(error as Error)?.message ||
-            "projection 상태를 불러오지 못했습니다."}
+            t(
+              "msg.admin.user_projection.load_error",
+              "Failed to load projection status.",
+            )}
         </section>
       ) : null}
 
       {actionResult ? (
         <section className="rounded-lg border border-emerald-200 bg-emerald-50 p-4 text-sm text-emerald-800 dark:border-emerald-900 dark:bg-emerald-950/40 dark:text-emerald-200">
-          {actionResult.syncedUsers}명 기준으로 projection을 갱신했습니다.
+          {t(
+            "msg.admin.user_projection.action_success",
+            "Refreshed the projection for {{count}} users.",
+            { count: actionResult.syncedUsers },
+          )}
         </section>
       ) : null}
 
       {actionError ? (
         <section className="rounded-lg border border-destructive/30 bg-destructive/10 p-4 text-sm text-destructive">
-          {(actionError as Error)?.message || "projection 작업에 실패했습니다."}
+          {(actionError as Error)?.message ||
+            t(
+              "msg.admin.user_projection.action_error",
+              "Projection operation failed.",
+            )}
         </section>
       ) : null}
 
@@ -131,19 +166,31 @@ function UserProjectionContent() {
             <Database size={18} />
           </div>
           <div>
-            <h3 className="text-base font-semibold">Kratos users projection</h3>
+            <h3 className="text-base font-semibold">
+              {t(
+                "ui.admin.user_projection.card.title",
+                "Kratos users projection",
+              )}
+            </h3>
             <p className="text-sm text-muted-foreground">
-              Backend DB 통계가 참조하는 사용자 read model 상태입니다.
+              {t(
+                "ui.admin.user_projection.card.description",
+                "Current user read model state referenced by backend DB statistics.",
+              )}
             </p>
           </div>
         </div>
 
         {isLoading ? (
-          <div className="py-8 text-sm text-muted-foreground">불러오는 중</div>
+          <div className="py-8 text-sm text-muted-foreground">
+            {t("ui.admin.user_projection.loading", "Loading")}
+          </div>
         ) : (
           <dl className="grid gap-4 py-5 sm:grid-cols-2 lg:grid-cols-4">
             <div>
-              <dt className="text-sm text-muted-foreground">상태</dt>
+              <dt className="text-sm text-muted-foreground">
+                {t("ui.admin.user_projection.summary.status", "Status")}
+              </dt>
               <dd className="mt-1">
                 <ProjectionStatusBadge
                   ready={data?.ready ?? false}
@@ -153,20 +200,33 @@ function UserProjectionContent() {
             </div>
             <div>
               <dt className="text-sm text-muted-foreground">
-                Projection 사용자
+                {t(
+                  "ui.admin.user_projection.summary.projected_users",
+                  "Projected users",
+                )}
               </dt>
               <dd className="mt-1 text-xl font-semibold tabular-nums">
                 {data?.projectedUsers ?? 0}
               </dd>
             </div>
             <div>
-              <dt className="text-sm text-muted-foreground">마지막 동기화</dt>
+              <dt className="text-sm text-muted-foreground">
+                {t(
+                  "ui.admin.user_projection.summary.last_synced",
+                  "Last synced",
+                )}
+              </dt>
               <dd className="mt-1 text-sm">
                 {formatDateTime(data?.lastSyncedAt)}
               </dd>
             </div>
             <div>
-              <dt className="text-sm text-muted-foreground">상태 갱신</dt>
+              <dt className="text-sm text-muted-foreground">
+                {t(
+                  "ui.admin.user_projection.summary.updated_at",
+                  "Updated at",
+                )}
+              </dt>
               <dd className="mt-1 text-sm">
                 {formatDateTime(data?.updatedAt)}
               </dd>
@@ -190,14 +250,22 @@ export default function UserProjectionPage() {
     <RoleGuard
       roles={["super_admin"]}
       fallback={
-        <main className="p-6 md:p-8">
-          <section className="rounded-lg border border-border bg-card p-5">
-            <h2 className="text-lg font-semibold">접근 권한이 없습니다</h2>
-            <p className="mt-2 text-sm text-muted-foreground">
-              이 화면은 super_admin 권한으로만 접근할 수 있습니다.
-            </p>
-          </section>
-        </main>
+      <main className="p-6 md:p-8">
+        <section className="rounded-lg border border-border bg-card p-5">
+          <h2 className="text-lg font-semibold">
+            {t(
+              "ui.admin.user_projection.forbidden.title",
+              "Access denied",
+            )}
+          </h2>
+          <p className="mt-2 text-sm text-muted-foreground">
+            {t(
+              "msg.admin.user_projection.forbidden.description",
+              "This screen is only available to super_admin users.",
+            )}
+          </p>
+        </section>
+      </main>
       }
     >
       <UserProjectionContent />
diff --git a/adminfront/src/lib/locale.ts b/adminfront/src/lib/locale.ts
new file mode 100644
index 00000000..9aafee8c
--- /dev/null
+++ b/adminfront/src/lib/locale.ts
@@ -0,0 +1,32 @@
+import { DEFAULT_LOCALE, LOCALE_STORAGE_KEY, type Locale } from "../../../common/core/i18n";
+
+function isLocale(value: string): value is Locale {
+  return value === "ko" || value === "en";
+}
+
+export function getAdminLocale(): Locale {
+  if (typeof window === "undefined") {
+    return DEFAULT_LOCALE;
+  }
+
+  const stored = window.localStorage.getItem(LOCALE_STORAGE_KEY);
+  if (stored && isLocale(stored)) {
+    return stored;
+  }
+
+  const pathLocale = window.location.pathname.split("/")[1];
+  if (pathLocale && isLocale(pathLocale)) {
+    return pathLocale;
+  }
+
+  const browserLang = window.navigator.language.toLowerCase();
+  if (browserLang.startsWith("ko")) {
+    return "ko";
+  }
+
+  return DEFAULT_LOCALE;
+}
+
+export function getAdminDateLocale() {
+  return getAdminLocale() === "ko" ? "ko-KR" : "en-US";
+}
diff --git a/adminfront/src/locales/en.toml b/adminfront/src/locales/en.toml
index 62b1e668..d883b317 100644
--- a/adminfront/src/locales/en.toml
+++ b/adminfront/src/locales/en.toml
@@ -162,6 +162,31 @@ success = "Check completed."
 [msg.admin.integrity.report]
 load_error = "Failed to load the integrity report."
 
+[msg.admin.integrity.check.duplicate_tenant_slugs]
+description = "Checks duplicate active tenant slugs using LOWER(TRIM(slug))."
+
+[msg.admin.integrity.check.orphan_tenant_parents]
+description = "Checks whether tenants.parent_id points to a missing or soft-deleted tenant."
+
+[msg.admin.integrity.check.orphan_user_login_id_tenants]
+description = "Checks whether user_login_ids.tenant_id points to a missing or soft-deleted tenant."
+
+[msg.admin.integrity.check.orphan_user_login_id_users]
+description = "Checks whether user_login_ids.user_id points to a missing or soft-deleted user."
+
+[msg.admin.integrity.check.orphan_user_tenant_memberships]
+description = "Checks whether users.tenant_id points to a missing or soft-deleted tenant."
+
+[msg.admin.user_projection]
+action_error = "Projection operation failed."
+action_success = "Refreshed the projection for {{count}} users."
+forbidden_description = "This screen is only available to super_admin users."
+load_error = "Failed to load projection status."
+reset_confirm = "Rebuild user projection from the Kratos source of truth?"
+
+[msg.admin.user_projection.forbidden]
+description = "This screen is only available to super_admin users."
+
 [msg.admin.groups.prompt]
 user_id = "User Id"
 
@@ -910,6 +935,21 @@ user = "User"
 tenant_integrity = "Tenant integrity"
 user_integrity = "User integrity"
 
+[ui.admin.integrity.check.duplicate_tenant_slugs]
+title = "Duplicate tenant slug"
+
+[ui.admin.integrity.check.orphan_tenant_parents]
+title = "Orphan tenant parents"
+
+[ui.admin.integrity.check.orphan_user_login_id_tenants]
+title = "Orphan user login ID tenants"
+
+[ui.admin.integrity.check.orphan_user_login_id_users]
+title = "Orphan user login ID users"
+
+[ui.admin.integrity.check.orphan_user_tenant_memberships]
+title = "Orphan user tenant memberships"
+
 [ui.admin.nav]
 org_chart = "Org Chart"
 api_keys = "API Keys"
@@ -925,6 +965,60 @@ tenants = "Tenants"
 user_projection = "User Projection"
 users = "Users"
 
+[ui.admin.user_projection]
+loading = "Loading user projection data..."
+title = "User Projection Management"
+
+[ui.admin.user_projection.actions]
+reconcile = "Re-sync"
+reset = "Reset and rebuild"
+
+[ui.admin.user_projection.card]
+description = "Current user read model state referenced by backend DB statistics."
+title = "Kratos users projection"
+
+[ui.admin.user_projection.forbidden]
+title = "Access denied"
+
+[ui.admin.user_projection.status]
+failed = "failed"
+not_ready = "not ready"
+ready = "ready"
+
+[ui.admin.user_projection.summary]
+last_synced = "Last synced"
+projected_users = "Projected users"
+status = "Status"
+updated_at = "Updated at"
+
+[ui.admin.auth_guard]
+subtitle = "Verify admin privileges and ReBAC relationships against the policy engine."
+title = "Auth Guard"
+
+[ui.admin.auth_guard.checker]
+check = "Check permission"
+checking = "Checking..."
+denied = "Access DENIED"
+denied_description = "The subject does not have access to the requested resource."
+description = "Check in real time whether a subject has access to a resource through Ory Keto."
+object_id = "Object ID"
+object_id_placeholder = "Tenant UUID, etc."
+allowed = "Access ALLOWED"
+allowed_description = "The subject has access to the requested resource, including inherited permissions."
+namespace = "Namespace"
+relation = "Relation"
+relation_placeholder = "view, manage, admins..."
+subject = "Subject (User:ID)"
+subject_placeholder = "User:uuid or Namespace:ID#Relation"
+title = "ReBAC permission checker"
+
+[ui.admin.auth_guard.checker.namespace]
+label = "Namespace"
+relying_party = "RelyingParty"
+system = "System"
+tenant = "Tenant"
+tenant_group = "TenantGroup"
+
 [ui.admin.org]
 download_template = "Download Template"
 import_btn = "Org/User Import"
diff --git a/adminfront/src/locales/ko.toml b/adminfront/src/locales/ko.toml
index 12882b97..bcb0f649 100644
--- a/adminfront/src/locales/ko.toml
+++ b/adminfront/src/locales/ko.toml
@@ -162,6 +162,31 @@ success = "검사가 완료되었습니다."
 [msg.admin.integrity.report]
 load_error = "정합성 리포트를 불러오지 못했습니다."
 
+[msg.admin.integrity.check.duplicate_tenant_slugs]
+description = "삭제되지 않은 tenant의 LOWER(TRIM(slug)) 기준 중복을 검사합니다."
+
+[msg.admin.integrity.check.orphan_tenant_parents]
+description = "tenants.parent_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다."
+
+[msg.admin.integrity.check.orphan_user_login_id_tenants]
+description = "user_login_ids.tenant_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다."
+
+[msg.admin.integrity.check.orphan_user_login_id_users]
+description = "user_login_ids.user_id가 존재하지 않거나 soft-deleted user를 참조하는지 검사합니다."
+
+[msg.admin.integrity.check.orphan_user_tenant_memberships]
+description = "users.tenant_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다."
+
+[msg.admin.user_projection]
+action_error = "사용자 동기화 작업에 실패했습니다."
+action_success = "{{count}}명 기준으로 사용자 동기화를 갱신했습니다."
+forbidden_description = "이 화면은 super_admin 권한으로만 접근할 수 있습니다."
+load_error = "사용자 동기화 상태를 불러오지 못했습니다."
+reset_confirm = "사용자 동기화를 Kratos 기준으로 다시 구축하시겠습니까?"
+
+[msg.admin.user_projection.forbidden]
+description = "이 화면은 super_admin 권한으로만 접근할 수 있습니다."
+
 [msg.admin.groups.prompt]
 user_id = "추가할 사용자의 UUID를 입력하세요:"
 
@@ -912,6 +937,21 @@ user = "사용자"
 tenant_integrity = "테넌트 정합성"
 user_integrity = "사용자 정합성"
 
+[ui.admin.integrity.check.duplicate_tenant_slugs]
+title = "중복 테넌트 slug"
+
+[ui.admin.integrity.check.orphan_tenant_parents]
+title = "고아 테넌트 부모"
+
+[ui.admin.integrity.check.orphan_user_login_id_tenants]
+title = "고아 로그인 ID 테넌트"
+
+[ui.admin.integrity.check.orphan_user_login_id_users]
+title = "고아 로그인 ID 사용자"
+
+[ui.admin.integrity.check.orphan_user_tenant_memberships]
+title = "고아 사용자 테넌트 소속"
+
 [ui.admin.nav]
 org_chart = "조직도"
 api_keys = "API 키"
@@ -924,9 +964,63 @@ relying_parties = "애플리케이션(RP)"
 tenant_dashboard = "테넌트 대시보드"
 user_groups = "유저 그룹"
 tenants = "테넌트"
-user_projection = "사용자 Projection"
+user_projection = "사용자 동기화"
 users = "사용자"
 
+[ui.admin.user_projection]
+loading = "불러오는 중"
+title = "사용자 동기화 관리"
+
+[ui.admin.user_projection.actions]
+reconcile = "재동기화"
+reset = "초기화 후 재구축"
+
+[ui.admin.user_projection.card]
+description = "Backend DB 통계가 참조하는 사용자 read model 상태입니다."
+title = "Kratos 사용자 동기화"
+
+[ui.admin.user_projection.forbidden]
+title = "접근 권한이 없습니다"
+
+[ui.admin.user_projection.status]
+failed = "실패"
+not_ready = "준비되지 않음"
+ready = "준비됨"
+
+[ui.admin.user_projection.summary]
+last_synced = "마지막 동기화"
+projected_users = "동기화 사용자"
+status = "상태"
+updated_at = "상태 갱신"
+
+[ui.admin.auth_guard]
+subtitle = "관리자 권한과 ReBAC 관계를 실제 정책 엔진 기준으로 확인합니다."
+title = "인증 가드"
+
+[ui.admin.auth_guard.checker]
+check = "권한 확인 실행"
+checking = "검증 중..."
+denied = "접근 거부"
+denied_description = "해당 사용자는 요청한 리소스에 대해 권한이 없습니다."
+description = "특정 주체(Subject)가 특정 리소스(Object)에 대해 권한이 있는지 Ory Keto를 통해 실시간으로 확인합니다."
+object_id = "대상 ID"
+object_id_placeholder = "Tenant UUID 등"
+allowed = "접근 허용"
+allowed_description = "해당 사용자는 요청한 리소스에 대해 권한이 있습니다. (상속 포함)"
+namespace = "네임스페이스"
+relation = "관계"
+relation_placeholder = "view, manage, admins..."
+subject = "주체 (User:ID)"
+subject_placeholder = "User:uuid 또는 Namespace:ID#Relation"
+title = "ReBAC 권한 검증 도구"
+
+[ui.admin.auth_guard.checker.namespace]
+label = "네임스페이스"
+relying_party = "애플리케이션(RP)"
+system = "시스템"
+tenant = "테넌트"
+tenant_group = "테넌트 그룹"
+
 [ui.admin.org]
 download_template = "템플릿 다운로드"
 import_btn = "조직/사용자 통합 임포트"
diff --git a/adminfront/src/locales/template.toml b/adminfront/src/locales/template.toml
index 63d010f1..c81129c5 100644
--- a/adminfront/src/locales/template.toml
+++ b/adminfront/src/locales/template.toml
@@ -167,6 +167,31 @@ success = ""
 [msg.admin.integrity.report]
 load_error = ""
 
+[msg.admin.integrity.check.duplicate_tenant_slugs]
+description = ""
+
+[msg.admin.integrity.check.orphan_tenant_parents]
+description = ""
+
+[msg.admin.integrity.check.orphan_user_login_id_tenants]
+description = ""
+
+[msg.admin.integrity.check.orphan_user_login_id_users]
+description = ""
+
+[msg.admin.integrity.check.orphan_user_tenant_memberships]
+description = ""
+
+[msg.admin.user_projection]
+action_error = ""
+action_success = ""
+forbidden_description = ""
+load_error = ""
+reset_confirm = ""
+
+[msg.admin.user_projection.forbidden]
+description = ""
+
 [msg.admin.groups.prompt]
 user_id = ""
 
@@ -925,6 +950,21 @@ user = ""
 tenant_integrity = ""
 user_integrity = ""
 
+[ui.admin.integrity.check.duplicate_tenant_slugs]
+title = ""
+
+[ui.admin.integrity.check.orphan_tenant_parents]
+title = ""
+
+[ui.admin.integrity.check.orphan_user_login_id_tenants]
+title = ""
+
+[ui.admin.integrity.check.orphan_user_login_id_users]
+title = ""
+
+[ui.admin.integrity.check.orphan_user_tenant_memberships]
+title = ""
+
 [ui.admin.nav]
 org_chart = ""
 api_keys = ""
@@ -940,6 +980,60 @@ tenants = ""
 user_projection = ""
 users = ""
 
+[ui.admin.user_projection]
+loading = ""
+title = ""
+
+[ui.admin.user_projection.actions]
+reconcile = ""
+reset = ""
+
+[ui.admin.user_projection.card]
+description = ""
+title = ""
+
+[ui.admin.user_projection.forbidden]
+title = ""
+
+[ui.admin.user_projection.status]
+failed = ""
+not_ready = ""
+ready = ""
+
+[ui.admin.user_projection.summary]
+last_synced = ""
+projected_users = ""
+status = ""
+updated_at = ""
+
+[ui.admin.auth_guard]
+subtitle = ""
+title = ""
+
+[ui.admin.auth_guard.checker]
+check = ""
+checking = ""
+denied = ""
+denied_description = ""
+description = ""
+object_id = ""
+object_id_placeholder = ""
+allowed = ""
+allowed_description = ""
+namespace = ""
+relation = ""
+relation_placeholder = ""
+subject = ""
+subject_placeholder = ""
+title = ""
+
+[ui.admin.auth_guard.checker.namespace]
+label = ""
+relying_party = ""
+system = ""
+tenant = ""
+tenant_group = ""
+
 [ui.admin.org]
 download_template = ""
 import_btn = ""
diff --git a/adminfront/src/test/i18nMock.ts b/adminfront/src/test/i18nMock.ts
new file mode 100644
index 00000000..34ce2608
--- /dev/null
+++ b/adminfront/src/test/i18nMock.ts
@@ -0,0 +1,155 @@
+type Vars = Record<string, string | number>;
+
+const translations: Record<"ko" | "en", Record<string, string>> = {
+  ko: {
+    "ui.admin.auth_guard.title": "인증 가드",
+    "ui.admin.auth_guard.subtitle":
+      "관리자 권한과 ReBAC 관계를 실제 정책 엔진 기준으로 확인합니다.",
+    "ui.admin.auth_guard.checker.title": "ReBAC 권한 검증 도구",
+    "ui.admin.auth_guard.checker.description":
+      "특정 주체(Subject)가 특정 리소스(Object)에 대해 권한이 있는지 Ory Keto를 통해 실시간으로 확인합니다.",
+    "ui.admin.auth_guard.checker.namespace.label": "네임스페이스",
+    "ui.admin.auth_guard.checker.namespace.tenant": "테넌트",
+    "ui.admin.auth_guard.checker.namespace.tenant_group": "테넌트 그룹",
+    "ui.admin.auth_guard.checker.namespace.relying_party": "애플리케이션(RP)",
+    "ui.admin.auth_guard.checker.namespace.system": "시스템",
+    "ui.admin.auth_guard.checker.relation": "관계",
+    "ui.admin.auth_guard.checker.object_id": "대상 ID",
+    "ui.admin.auth_guard.checker.subject": "주체 (User:ID)",
+    "ui.admin.auth_guard.checker.check": "권한 확인 실행",
+    "ui.admin.auth_guard.checker.checking": "검증 중...",
+    "ui.admin.auth_guard.checker.allowed": "접근 허용",
+    "ui.admin.auth_guard.checker.allowed_description":
+      "해당 사용자는 요청한 리소스에 대해 권한이 있습니다. (상속 포함)",
+    "ui.admin.auth_guard.checker.denied": "접근 거부",
+    "ui.admin.auth_guard.checker.denied_description":
+      "해당 사용자는 요청한 리소스에 대해 권한이 없습니다.",
+    "ui.admin.integrity.check.duplicate_tenant_slugs.title": "중복 테넌트 slug",
+    "ui.admin.integrity.section.tenant_integrity": "테넌트 정합성",
+    "ui.admin.integrity.section.user_integrity": "사용자 정합성",
+    "ui.admin.integrity.title": "데이터 정합성 검증",
+    "ui.admin.integrity.recheck.run": "다시 검사",
+    "ui.admin.integrity.recheck.running": "검사 중",
+    "ui.admin.integrity.status.fail": "실패",
+    "ui.admin.integrity.status.pass": "정상",
+    "ui.admin.integrity.status.warning": "주의",
+    "ui.admin.integrity.orphan_login_ids.title": "유령 로그인 ID 정리",
+    "ui.admin.integrity.forbidden.title": "접근 권한이 없습니다",
+    "ui.admin.integrity.summary.title": "정합성 최종 검증",
+    "ui.admin.user_projection.actions.reconcile": "재동기화",
+    "ui.admin.user_projection.actions.reset": "초기화 후 재구축",
+    "ui.admin.user_projection.card.description":
+      "Backend DB 통계가 참조하는 사용자 read model 상태입니다.",
+    "ui.admin.user_projection.card.title": "Kratos 사용자 동기화",
+    "ui.admin.user_projection.forbidden.title": "접근 권한이 없습니다",
+    "ui.admin.user_projection.loading": "불러오는 중",
+    "ui.admin.user_projection.status.failed": "실패",
+    "ui.admin.user_projection.status.not_ready": "준비되지 않음",
+    "ui.admin.user_projection.status.ready": "준비됨",
+    "ui.admin.user_projection.summary.last_synced": "마지막 동기화",
+    "ui.admin.user_projection.summary.projected_users": "동기화 사용자",
+    "ui.admin.user_projection.summary.status": "상태",
+    "ui.admin.user_projection.summary.updated_at": "상태 갱신",
+    "ui.admin.user_projection.title": "사용자 동기화 관리",
+    "msg.admin.integrity.check.duplicate_tenant_slugs.description":
+      "삭제되지 않은 tenant의 LOWER(TRIM(slug)) 기준 중복을 검사합니다.",
+    "msg.admin.integrity.check.orphan_tenant_parents.description":
+      "tenants.parent_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다.",
+    "msg.admin.integrity.check.orphan_user_login_id_tenants.description":
+      "user_login_ids.tenant_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다.",
+    "msg.admin.integrity.check.orphan_user_login_id_users.description":
+      "user_login_ids.user_id가 존재하지 않거나 soft-deleted user를 참조하는지 검사합니다.",
+    "msg.admin.integrity.check.orphan_user_tenant_memberships.description":
+      "users.tenant_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다.",
+    "msg.admin.integrity.recheck.running":
+      "정합성 검사를 실행 중입니다.",
+    "msg.admin.integrity.recheck.success": "검사가 완료되었습니다.",
+    "msg.admin.user_projection.forbidden.description":
+      "이 화면은 super_admin 권한으로만 접근할 수 있습니다.",
+  },
+  en: {
+    "ui.admin.auth_guard.title": "Auth Guard",
+    "ui.admin.auth_guard.subtitle":
+      "Verify admin privileges and ReBAC relationships against the policy engine.",
+    "ui.admin.auth_guard.checker.title": "ReBAC permission checker",
+    "ui.admin.auth_guard.checker.description":
+      "Check in real time whether a subject has access to a resource through Ory Keto.",
+    "ui.admin.auth_guard.checker.namespace.label": "Namespace",
+    "ui.admin.auth_guard.checker.namespace.tenant": "Tenant",
+    "ui.admin.auth_guard.checker.namespace.tenant_group": "TenantGroup",
+    "ui.admin.auth_guard.checker.namespace.relying_party": "RelyingParty",
+    "ui.admin.auth_guard.checker.namespace.system": "System",
+    "ui.admin.auth_guard.checker.relation": "Relation",
+    "ui.admin.auth_guard.checker.object_id": "Object ID",
+    "ui.admin.auth_guard.checker.subject": "Subject (User:ID)",
+    "ui.admin.auth_guard.checker.check": "Check permission",
+    "ui.admin.auth_guard.checker.checking": "Checking...",
+    "ui.admin.auth_guard.checker.allowed": "Access ALLOWED",
+    "ui.admin.auth_guard.checker.allowed_description":
+      "The subject has access to the requested resource, including inherited permissions.",
+    "ui.admin.auth_guard.checker.denied": "Access DENIED",
+    "ui.admin.auth_guard.checker.denied_description":
+      "The subject does not have access to the requested resource.",
+    "ui.admin.integrity.check.duplicate_tenant_slugs.title": "Duplicate tenant slug",
+    "ui.admin.integrity.section.tenant_integrity": "Tenant integrity",
+    "ui.admin.integrity.section.user_integrity": "User integrity",
+    "ui.admin.integrity.title": "Data Integrity Check",
+    "ui.admin.integrity.recheck.run": "Run again",
+    "ui.admin.integrity.recheck.running": "Checking",
+    "ui.admin.integrity.status.fail": "Failed",
+    "ui.admin.integrity.status.pass": "Passed",
+    "ui.admin.integrity.status.warning": "Warning",
+    "ui.admin.integrity.orphan_login_ids.title": "Orphan Login ID Cleanup",
+    "ui.admin.integrity.forbidden.title": "Access denied",
+    "ui.admin.integrity.summary.title": "Final integrity check",
+    "ui.admin.user_projection.actions.reconcile": "Re-sync",
+    "ui.admin.user_projection.actions.reset": "Reset and rebuild",
+    "ui.admin.user_projection.card.description":
+      "Current user read model state referenced by backend DB statistics.",
+    "ui.admin.user_projection.card.title": "Kratos users projection",
+    "ui.admin.user_projection.forbidden.title": "Access denied",
+    "ui.admin.user_projection.loading": "Loading",
+    "ui.admin.user_projection.status.failed": "failed",
+    "ui.admin.user_projection.status.not_ready": "not ready",
+    "ui.admin.user_projection.status.ready": "ready",
+    "ui.admin.user_projection.summary.last_synced": "Last synced",
+    "ui.admin.user_projection.summary.projected_users": "Projected users",
+    "ui.admin.user_projection.summary.status": "Status",
+    "ui.admin.user_projection.summary.updated_at": "Updated at",
+    "ui.admin.user_projection.title": "User Projection Management",
+    "msg.admin.integrity.check.duplicate_tenant_slugs.description":
+      "Checks duplicate active tenant slugs using LOWER(TRIM(slug)).",
+    "msg.admin.integrity.check.orphan_tenant_parents.description":
+      "Checks whether tenants.parent_id points to a missing or soft-deleted tenant.",
+    "msg.admin.integrity.check.orphan_user_login_id_tenants.description":
+      "Checks whether user_login_ids.tenant_id points to a missing or soft-deleted tenant.",
+    "msg.admin.integrity.check.orphan_user_login_id_users.description":
+      "Checks whether user_login_ids.user_id points to a missing or soft-deleted user.",
+    "msg.admin.integrity.check.orphan_user_tenant_memberships.description":
+      "Checks whether users.tenant_id points to a missing or soft-deleted tenant.",
+    "msg.admin.integrity.recheck.running": "Running integrity check.",
+    "msg.admin.integrity.recheck.success": "Check completed.",
+    "msg.admin.user_projection.forbidden.description":
+      "This screen is only available to super_admin users.",
+  },
+};
+
+function format(template: string, vars?: Vars) {
+  if (!vars) {
+    return template;
+  }
+  return template.replace(/\{\{\s*(\w+)\s*\}\}/g, (match, key) => {
+    const value = vars[key];
+    return value === undefined || value === null ? match : String(value);
+  });
+}
+
+export function createI18nMock() {
+  return {
+    t(key: string, fallback?: string, vars?: Vars) {
+      const locale = window.localStorage.getItem("locale") === "en" ? "en" : "ko";
+      const template = translations[locale][key] ?? fallback ?? key;
+      return format(template, vars);
+    },
+  };
+}
diff --git a/locales/en.toml b/locales/en.toml
index c3cc2776..0d2040b4 100644
--- a/locales/en.toml
+++ b/locales/en.toml
@@ -2663,6 +2663,31 @@ success = "Check completed."
 [msg.admin.integrity.report]
 load_error = "Failed to load the integrity report."
 
+[msg.admin.integrity.check.duplicate_tenant_slugs]
+description = "Checks duplicate active tenant slugs using LOWER(TRIM(slug))."
+
+[msg.admin.integrity.check.orphan_tenant_parents]
+description = "Checks whether tenants.parent_id points to a missing or soft-deleted tenant."
+
+[msg.admin.integrity.check.orphan_user_login_id_tenants]
+description = "Checks whether user_login_ids.tenant_id points to a missing or soft-deleted tenant."
+
+[msg.admin.integrity.check.orphan_user_login_id_users]
+description = "Checks whether user_login_ids.user_id points to a missing or soft-deleted user."
+
+[msg.admin.integrity.check.orphan_user_tenant_memberships]
+description = "Checks whether users.tenant_id points to a missing or soft-deleted tenant."
+
+[msg.admin.user_projection]
+action_error = "Projection operation failed."
+action_success = "Refreshed the projection for {{count}} users."
+forbidden_description = "This screen is only available to super_admin users."
+load_error = "Failed to load projection status."
+reset_confirm = "Rebuild user projection from the Kratos source of truth?"
+
+[msg.admin.user_projection.forbidden]
+description = "This screen is only available to super_admin users."
+
 [ui.admin.integrity]
 fetch_error = "Unable to load the final integrity check result."
 kicker = "System"
@@ -2715,6 +2740,21 @@ user = "User"
 tenant_integrity = "Tenant integrity"
 user_integrity = "User integrity"
 
+[ui.admin.integrity.check.duplicate_tenant_slugs]
+title = "Duplicate tenant slug"
+
+[ui.admin.integrity.check.orphan_tenant_parents]
+title = "Orphan tenant parents"
+
+[ui.admin.integrity.check.orphan_user_login_id_tenants]
+title = "Orphan user login ID tenants"
+
+[ui.admin.integrity.check.orphan_user_login_id_users]
+title = "Orphan user login ID users"
+
+[ui.admin.integrity.check.orphan_user_tenant_memberships]
+title = "Orphan user tenant memberships"
+
 [msg.admin.api_keys.list]
 edit_scopes_desc = "Edit the scopes granted to this API key."
 rotate_confirm = "Rotate the secret for this API key?"
@@ -2729,6 +2769,60 @@ rotate_secret = "Rotate secret"
 rotate_secret_done = "Secret rotated"
 save_scopes = "Save scopes"
 
+[ui.admin.user_projection]
+loading = "Loading user projection data..."
+title = "User Projection Management"
+
+[ui.admin.user_projection.actions]
+reconcile = "Re-sync"
+reset = "Reset and rebuild"
+
+[ui.admin.user_projection.card]
+description = "Current user read model state referenced by backend DB statistics."
+title = "Kratos users projection"
+
+[ui.admin.user_projection.forbidden]
+title = "Access denied"
+
+[ui.admin.user_projection.status]
+failed = "failed"
+not_ready = "not ready"
+ready = "ready"
+
+[ui.admin.user_projection.summary]
+last_synced = "Last synced"
+projected_users = "Projected users"
+status = "Status"
+updated_at = "Updated at"
+
+[ui.admin.auth_guard]
+subtitle = "Verify admin privileges and ReBAC relationships against the policy engine."
+title = "Auth Guard"
+
+[ui.admin.auth_guard.checker]
+check = "Check permission"
+checking = "Checking..."
+denied = "Access DENIED"
+denied_description = "The subject does not have access to the requested resource."
+description = "Check in real time whether a subject has access to a resource through Ory Keto."
+object_id = "Object ID"
+object_id_placeholder = "Tenant UUID, etc."
+allowed = "Access ALLOWED"
+allowed_description = "The subject has access to the requested resource, including inherited permissions."
+namespace = "Namespace"
+relation = "Relation"
+relation_placeholder = "view, manage, admins..."
+subject = "Subject (User:ID)"
+subject_placeholder = "User:uuid or Namespace:ID#Relation"
+title = "ReBAC permission checker"
+
+[ui.admin.auth_guard.checker.namespace]
+label = "Namespace"
+relying_party = "RelyingParty"
+system = "System"
+tenant = "Tenant"
+tenant_group = "TenantGroup"
+
 [ui.admin.overview.summary]
 total_users = "Total Users"
 
diff --git a/locales/ko.toml b/locales/ko.toml
index ba90aa78..d5e06066 100644
--- a/locales/ko.toml
+++ b/locales/ko.toml
@@ -3087,6 +3087,31 @@ success = "검사가 완료되었습니다."
 [msg.admin.integrity.report]
 load_error = "정합성 리포트를 불러오지 못했습니다."
 
+[msg.admin.integrity.check.duplicate_tenant_slugs]
+description = "삭제되지 않은 tenant의 LOWER(TRIM(slug)) 기준 중복을 검사합니다."
+
+[msg.admin.integrity.check.orphan_tenant_parents]
+description = "tenants.parent_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다."
+
+[msg.admin.integrity.check.orphan_user_login_id_tenants]
+description = "user_login_ids.tenant_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다."
+
+[msg.admin.integrity.check.orphan_user_login_id_users]
+description = "user_login_ids.user_id가 존재하지 않거나 soft-deleted user를 참조하는지 검사합니다."
+
+[msg.admin.integrity.check.orphan_user_tenant_memberships]
+description = "users.tenant_id가 존재하지 않거나 soft-deleted tenant를 참조하는지 검사합니다."
+
+[msg.admin.user_projection]
+action_error = "사용자 동기화 작업에 실패했습니다."
+action_success = "{{count}}명 기준으로 사용자 동기화를 갱신했습니다."
+forbidden_description = "이 화면은 super_admin 권한으로만 접근할 수 있습니다."
+load_error = "사용자 동기화 상태를 불러오지 못했습니다."
+reset_confirm = "사용자 동기화를 Kratos 기준으로 다시 구축하시겠습니까?"
+
+[msg.admin.user_projection.forbidden]
+description = "이 화면은 super_admin 권한으로만 접근할 수 있습니다."
+
 [ui.admin.integrity]
 fetch_error = "정합성 최종 검증 결과를 불러오지 못했습니다."
 kicker = "시스템"
@@ -3139,6 +3164,21 @@ user = "사용자"
 tenant_integrity = "테넌트 정합성"
 user_integrity = "사용자 정합성"
 
+[ui.admin.integrity.check.duplicate_tenant_slugs]
+title = "중복 테넌트 slug"
+
+[ui.admin.integrity.check.orphan_tenant_parents]
+title = "고아 테넌트 부모"
+
+[ui.admin.integrity.check.orphan_user_login_id_tenants]
+title = "고아 로그인 ID 테넌트"
+
+[ui.admin.integrity.check.orphan_user_login_id_users]
+title = "고아 로그인 ID 사용자"
+
+[ui.admin.integrity.check.orphan_user_tenant_memberships]
+title = "고아 사용자 테넌트 소속"
+
 [msg.admin.api_keys.list]
 edit_scopes_desc = "API 키에 부여할 권한 범위를 수정합니다."
 rotate_confirm = "이 API 키의 Secret을 재발급할까요?"
@@ -3153,6 +3193,60 @@ rotate_secret = "Secret 재발급"
 rotate_secret_done = "Secret 재발급 완료"
 save_scopes = "권한 저장"
 
+[ui.admin.user_projection]
+loading = "불러오는 중"
+title = "사용자 동기화 관리"
+
+[ui.admin.user_projection.actions]
+reconcile = "재동기화"
+reset = "초기화 후 재구축"
+
+[ui.admin.user_projection.card]
+description = "Backend DB 통계가 참조하는 사용자 read model 상태입니다."
+title = "Kratos 사용자 동기화"
+
+[ui.admin.user_projection.forbidden]
+title = "접근 권한이 없습니다"
+
+[ui.admin.user_projection.status]
+failed = "실패"
+not_ready = "준비되지 않음"
+ready = "준비됨"
+
+[ui.admin.user_projection.summary]
+last_synced = "마지막 동기화"
+projected_users = "동기화 사용자"
+status = "상태"
+updated_at = "상태 갱신"
+
+[ui.admin.auth_guard]
+subtitle = "관리자 권한과 ReBAC 관계를 실제 정책 엔진 기준으로 확인합니다."
+title = "인증 가드"
+
+[ui.admin.auth_guard.checker]
+check = "권한 확인 실행"
+checking = "검증 중..."
+denied = "접근 거부"
+denied_description = "해당 사용자는 요청한 리소스에 대해 권한이 없습니다."
+description = "특정 주체(Subject)가 특정 리소스(Object)에 대해 권한이 있는지 Ory Keto를 통해 실시간으로 확인합니다."
+object_id = "대상 ID"
+object_id_placeholder = "Tenant UUID 등"
+allowed = "접근 허용"
+allowed_description = "해당 사용자는 요청한 리소스에 대해 권한이 있습니다. (상속 포함)"
+namespace = "네임스페이스"
+relation = "관계"
+relation_placeholder = "view, manage, admins..."
+subject = "주체 (User:ID)"
+subject_placeholder = "User:uuid 또는 Namespace:ID#Relation"
+title = "ReBAC 권한 검증 도구"
+
+[ui.admin.auth_guard.checker.namespace]
+label = "네임스페이스"
+relying_party = "애플리케이션(RP)"
+system = "시스템"
+tenant = "테넌트"
+tenant_group = "테넌트 그룹"
+
 [ui.admin.overview.summary]
 total_users = "전체 사용자 수"
 
diff --git a/locales/template.toml b/locales/template.toml
index d19cba8b..3b5ab9cc 100644
--- a/locales/template.toml
+++ b/locales/template.toml
@@ -2967,6 +2967,31 @@ success = ""
 [msg.admin.integrity.report]
 load_error = ""
 
+[msg.admin.integrity.check.duplicate_tenant_slugs]
+description = ""
+
+[msg.admin.integrity.check.orphan_tenant_parents]
+description = ""
+
+[msg.admin.integrity.check.orphan_user_login_id_tenants]
+description = ""
+
+[msg.admin.integrity.check.orphan_user_login_id_users]
+description = ""
+
+[msg.admin.integrity.check.orphan_user_tenant_memberships]
+description = ""
+
+[msg.admin.user_projection]
+action_error = ""
+action_success = ""
+forbidden_description = ""
+load_error = ""
+reset_confirm = ""
+
+[msg.admin.user_projection.forbidden]
+description = ""
+
 [ui.admin.integrity]
 fetch_error = ""
 kicker = ""
@@ -3019,6 +3044,21 @@ user = ""
 tenant_integrity = ""
 user_integrity = ""
 
+[ui.admin.integrity.check.duplicate_tenant_slugs]
+title = ""
+
+[ui.admin.integrity.check.orphan_tenant_parents]
+title = ""
+
+[ui.admin.integrity.check.orphan_user_login_id_tenants]
+title = ""
+
+[ui.admin.integrity.check.orphan_user_login_id_users]
+title = ""
+
+[ui.admin.integrity.check.orphan_user_tenant_memberships]
+title = ""
+
 [msg.admin.api_keys.list]
 edit_scopes_desc = ""
 rotate_confirm = ""
@@ -3033,6 +3073,60 @@ rotate_secret = ""
 rotate_secret_done = ""
 save_scopes = ""
 
+[ui.admin.user_projection]
+loading = ""
+title = ""
+
+[ui.admin.user_projection.actions]
+reconcile = ""
+reset = ""
+
+[ui.admin.user_projection.card]
+description = ""
+title = ""
+
+[ui.admin.user_projection.forbidden]
+title = ""
+
+[ui.admin.user_projection.status]
+failed = ""
+not_ready = ""
+ready = ""
+
+[ui.admin.user_projection.summary]
+last_synced = ""
+projected_users = ""
+status = ""
+updated_at = ""
+
+[ui.admin.auth_guard]
+subtitle = ""
+title = ""
+
+[ui.admin.auth_guard.checker]
+check = ""
+checking = ""
+denied = ""
+denied_description = ""
+description = ""
+object_id = ""
+object_id_placeholder = ""
+allowed = ""
+allowed_description = ""
+namespace = ""
+relation = ""
+relation_placeholder = ""
+subject = ""
+subject_placeholder = ""
+title = ""
+
+[ui.admin.auth_guard.checker.namespace]
+label = ""
+relying_party = ""
+system = ""
+tenant = ""
+tenant_group = ""
+
 [ui.admin.overview.summary]
 total_users = ""