Merge remote-tracking branch 'origin/dev' into dev

2026-05-12 18:03:08 +09:00
parent e8a4d7544f 68eeac90f7
commit 937f2f9820
86 changed files with 3749 additions and 2834 deletions
--- a/README.md
+++ b/README.md
@@ -541,11 +541,12 @@ KETO_WRITE_URL = "http://keto:4467"
 ```

 ## 🌐 i18n 구조 (간략)
- **Source of Truth**: `locales/template.toml`이 전체 키의 기준이며 `locales/ko.toml`, `locales/en.toml`과 항상 동기화합니다.
- **React(Admin/Dev)**: `adminfront/src/lib/i18n.ts`, `devfront/src/lib/i18n.ts`에서 `t(key, fallback, vars)`로 사용하고 TOML을 `?raw`로 로드합니다.
+- **Root locales**: `locales/template.toml`, `locales/ko.toml`, `locales/en.toml`은 현재 `userfront`와 전역 i18n 검증 기준 리소스입니다.
+- **Common locales**: `common/locales/template.toml`, `common/locales/ko.toml`, `common/locales/en.toml`은 `ui.common.*`, `msg.common.*` 같은 React 공통 문구 레이어입니다.
+- **React(Admin/Dev/Org)**: `adminfront/src/lib/i18n.ts`, `devfront/src/lib/i18n.ts`, `orgfront/src/lib/i18n.ts`에서 `t(key, fallback, vars)`를 사용하며 `common locale -> app locale override` 순서로 TOML을 `?raw` 로드합니다.
 - **Flutter(User)**: `userfront/lib/i18n.dart`에서 `tr(key, fallback, params)` 사용. `locales/*.toml`을 `tools/i18n-scanner/gen-flutter-i18n.js`로 `userfront/lib/i18n_data.dart`에 사전 생성합니다.
 - **UserFront 동기화 규칙**: `locales/*.toml`을 수정한 뒤에는 반드시 `./scripts/sync_userfront_locales.sh`를 실행해 `userfront/assets/translations/*.toml`과 런타임 번역 리소스를 동기화합니다.
- **검증**: `node tools/i18n-scanner/index.js`로 코드-키-로케일 동기화 상태를 점검합니다.
+- **검증**: `node tools/i18n-scanner/index.js`로 `root locales`와 `common/locales`의 코드-키-로케일 동기화 상태를 함께 점검합니다.

 ## 🧪 Code Check CI
 워크플로우 파일: `.gitea/workflows/code_check.yml`
--- a/adminfront/src/app/queryClient.ts
+++ b/adminfront/src/app/queryClient.ts
@@ -1,11 +1,7 @@
 import { QueryClient } from "@tanstack/react-query";

+import { queryClientDefaultOptions } from "../../../common/core/query/queryClient";
+
 export const queryClient = new QueryClient({
-  defaultOptions: {
-    queries: {
-      staleTime: 30_000,
-      refetchOnWindowFocus: false,
-      retry: 1,
-    },
-  },
+  defaultOptions: queryClientDefaultOptions,
 });
--- a/adminfront/src/components/layout/AppLayout.tsx
+++ b/adminfront/src/components/layout/AppLayout.tsx
@@ -26,6 +26,15 @@ import {
  shouldAttemptSlidingSessionRenew,
  shouldAttemptUnlimitedSessionRenew,
 } from "../../lib/sessionSliding";
+import {
+  applyShellTheme,
+  buildShellProfileSummary,
+  buildShellSessionStatus,
+  readShellSessionExpiryEnabled,
+  readShellTheme,
+  shellLayoutClasses,
+  writeShellSessionExpiryEnabled,
+} from "../../../../common/shell";
 import LanguageSelector from "../common/LanguageSelector";
 import RoleSwitcher from "./RoleSwitcher";

@@ -62,15 +71,11 @@ function AppLayout() {
  const mockRoleOverride = isMockRoleEnabled
    ? window.localStorage.getItem("X-Mock-Role")
    : null;
-  const [theme, setTheme] = useState<"light" | "dark">(() => {
-    const stored = window.localStorage.getItem("admin_theme");
-    return stored === "dark" ? "dark" : "light";
-  });
+  const [theme, setTheme] = useState<"light" | "dark">(readShellTheme);
  const [isProfileOpen, setIsProfileOpen] = useState(false);
-  const [isSessionExpiryEnabled, setIsSessionExpiryEnabled] = useState(() => {
-    const stored = window.localStorage.getItem("baron_session_expiry_enabled");
-    return stored !== "false";
-  });
+  const [isSessionExpiryEnabled, setIsSessionExpiryEnabled] = useState(
+    readShellSessionExpiryEnabled,
+  );
  const [nowMs, setNowMs] = useState(() => Date.now());

  useEffect(() => {
@@ -214,14 +219,7 @@ function AppLayout() {
  }, [auth.user]);

  useEffect(() => {
-    const root = document.documentElement;
-    root.classList.remove("light", "dark");
-    if (theme === "light") {
-      root.classList.add("light");
-    } else {
-      root.classList.add("dark");
-    }
-    window.localStorage.setItem("admin_theme", theme);
+    applyShellTheme(theme);
  }, [theme]);

  useEffect(() => {
@@ -388,68 +386,26 @@ function AppLayout() {
    setTheme((prev) => (prev === "light" ? "dark" : "light"));
  };

-  const profileName =
-    profile?.name?.trim() ||
-    auth.user?.profile.name?.toString().trim() ||
-    auth.user?.profile.preferred_username?.toString().trim() ||
-    t("ui.dev.profile.unknown_name", "Unknown User");
-  const profileEmail =
-    profile?.email?.trim() ||
-    auth.user?.profile.email?.toString().trim() ||
-    t("ui.dev.profile.unknown_email", "unknown@example.com");
-  const profileInitial = profileName.charAt(0).toUpperCase();
+  const profileSummary = buildShellProfileSummary({
+    profileName:
+      profile?.name ||
+      auth.user?.profile.name?.toString() ||
+      auth.user?.profile.preferred_username?.toString(),
+    profileEmail: profile?.email || auth.user?.profile.email?.toString(),
+    fallbackName: t("ui.dev.profile.unknown_name", "Unknown User"),
+    fallbackEmail: t("ui.dev.profile.unknown_email", "unknown@example.com"),
+  });
  const profileRoleKey = mockRoleOverride || profile?.role || "user";
-  const expiresAtSec = auth.user?.expires_at;
-  const remainingMs =
-    typeof expiresAtSec === "number" ? expiresAtSec * 1000 - nowMs : null;
-  const remainingTotalSec =
-    remainingMs !== null ? Math.max(0, Math.floor(remainingMs / 1000)) : null;
-  const remainingMinutes =
-    remainingTotalSec !== null ? Math.floor(remainingTotalSec / 60) : null;
-  const remainingSeconds =
-    remainingTotalSec !== null ? remainingTotalSec % 60 : null;
-
-  let sessionToneClass =
-    "border-emerald-500/30 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300";
-  let sessionText = t("ui.dev.session.active", "세션 활성");
-
-  if (remainingMs === null) {
-    sessionToneClass = "border-border bg-card text-muted-foreground";
-    sessionText = t("ui.dev.session.unknown", "알 수 없음");
-  } else if (remainingMs <= 0) {
-    sessionToneClass =
-      "border-rose-500/30 bg-rose-500/10 text-rose-700 dark:text-rose-300";
-    sessionText = t("ui.dev.session.expired", "세션 만료");
-  } else if (
-    remainingMinutes !== null &&
-    remainingSeconds !== null &&
-    remainingMinutes <= 5
-  ) {
-    sessionToneClass =
-      "border-amber-500/30 bg-amber-500/10 text-amber-700 dark:text-amber-300";
-    sessionText = t(
-      "ui.dev.session.expiring",
-      "만료 임박: {{minutes}}분 {{seconds}}초 남음",
-      {
-        minutes: remainingMinutes,
-        seconds: remainingSeconds,
-      },
-    );
-  } else {
-    sessionText = t(
-      "ui.dev.session.remaining",
-      "만료 예정: {{minutes}}분 {{seconds}}초 남음",
-      {
-        minutes: remainingMinutes ?? 0,
-        seconds: remainingSeconds ?? 0,
-      },
-    );
-  }
+  const sessionStatus = buildShellSessionStatus({
+    expiresAtSec: auth.user?.expires_at,
+    nowMs,
+    t,
+  });

  const handleSessionExpiryToggle = () => {
    setIsSessionExpiryEnabled((prev) => {
      const next = !prev;
-      window.localStorage.setItem("baron_session_expiry_enabled", String(next));
+      writeShellSessionExpiryEnabled(next);
      return next;
    });
  };
@@ -463,11 +419,11 @@ function AppLayout() {
  }

  return (
-    <div className="grid min-h-screen bg-background text-foreground md:grid-cols-[240px,1fr]">
-      <aside className="border-b border-border bg-card md:sticky md:top-0 md:h-screen md:border-b-0 md:border-r md:bg-card md:backdrop-blur">
-        <div className="flex items-center justify-between px-5 py-4 md:block md:space-y-6 md:py-6">
-          <div className="flex items-center gap-3 md:flex-col md:items-start">
-            <div className="grid h-11 w-11 place-items-center rounded-xl bg-primary/15 text-primary shadow-[0_12px_30px_rgba(54,211,153,0.22)]">
+    <div className={shellLayoutClasses.root}>
+      <aside className={shellLayoutClasses.asideStatic}>
+        <div className={shellLayoutClasses.brandSection}>
+          <div className={shellLayoutClasses.brandWrap}>
+            <div className={shellLayoutClasses.brandIcon}>
              <ShieldHalf size={20} />
            </div>
            <div>
@@ -480,8 +436,8 @@ function AppLayout() {
            </div>
          </div>
        </div>
-        <nav className="px-2 pb-4 md:px-3 md:pb-8">
-          <div className="flex flex-col gap-1">
+        <nav className={shellLayoutClasses.navWrap}>
+          <div className={shellLayoutClasses.navList}>
            {navItems.map((item: NavItem) => {
              const { label, to, icon: Icon, isExternal } = item;
              const isOrgChart = location.pathname === "/tenants/org-chart";
@@ -499,7 +455,10 @@ function AppLayout() {
                    href={to}
                    target="_blank"
                    rel="noopener noreferrer"
-                    className="flex items-center gap-3 rounded-xl px-3 py-3 text-sm text-muted-foreground transition hover:bg-muted/10 hover:text-foreground"
+                    className={[
+                      shellLayoutClasses.navItemBase,
+                      shellLayoutClasses.navItemIdle,
+                    ].join(" ")}
                  >
                    <Icon size={18} />
                    <span>{t(label, label)}</span>
@@ -513,10 +472,10 @@ function AppLayout() {
                  to={to}
                  className={() =>
                    [
-                      "flex items-center gap-3 rounded-xl px-3 py-3 text-sm transition",
+                      shellLayoutClasses.navItemBase,
                      isCustomActive
-                        ? "bg-primary/10 text-primary shadow-[0_12px_40px_rgba(54,211,153,0.18)]"
-                        : "text-muted-foreground hover:bg-muted/10 hover:text-foreground",
+                        ? shellLayoutClasses.navItemActive
+                        : shellLayoutClasses.navItemIdle,
                    ].join(" ")
                  }
                >
@@ -531,7 +490,7 @@ function AppLayout() {
            <button
              type="button"
              onClick={handleLogout}
-              className="flex w-full items-center gap-3 rounded-xl px-3 py-3 text-sm text-muted-foreground transition hover:bg-destructive/10 hover:text-destructive"
+              className={shellLayoutClasses.logoutButton}
            >
              <LogOut size={18} />
              <span>{t("ui.admin.nav.logout", "Logout")}</span>
@@ -540,10 +499,10 @@ function AppLayout() {
        </nav>
      </aside>

-      <div className="relative min-w-0">
-        <header className="sticky top-0 z-50 border-b border-border bg-background/90 backdrop-blur">
-          <div className="flex items-center justify-between px-5 py-4 md:px-8">
-            <div className="flex flex-col gap-1">
+      <div className={shellLayoutClasses.contentWide}>
+        <header className={shellLayoutClasses.headerElevated}>
+          <div className={shellLayoutClasses.headerInner}>
+            <div className={shellLayoutClasses.headerTitleWrap}>
              <p className="text-xs uppercase tracking-[0.22em] text-muted-foreground">
                {t("ui.admin.header.plane", "ADMIN PLANE")}
              </p>
@@ -552,12 +511,12 @@ function AppLayout() {
              </span>
            </div>

-            <div className="flex items-center gap-2 text-sm">
+            <div className={shellLayoutClasses.headerActions}>
              <LanguageSelector />
              <button
                type="button"
                onClick={toggleTheme}
-                className="inline-flex items-center gap-2 rounded-full border border-border px-3 py-2 text-muted-foreground transition hover:bg-muted/20"
+                className={shellLayoutClasses.actionButton}
                aria-label={t("ui.common.theme_toggle", "테마 전환")}
              >
                {theme === "light" ? <Sun size={16} /> : <Moon size={16} />}
@@ -568,11 +527,11 @@ function AppLayout() {
              {isSessionExpiryEnabled ? (
                <span
                  className={[
-                    "hidden rounded-full border px-3 py-2 text-xs font-medium md:inline-flex",
-                    sessionToneClass,
+                    shellLayoutClasses.sessionBadge,
+                    sessionStatus.toneClass,
                  ].join(" ")}
                >
-                  {sessionText}
+                  {sessionStatus.text}
                </span>
              ) : null}
              <div className="relative" ref={profileMenuRef}>
@@ -584,15 +543,15 @@ function AppLayout() {
                  aria-expanded={isProfileOpen}
                  aria-label={t("ui.dev.profile.menu_aria", "계정 메뉴 열기")}
                >
-                  <div className="grid h-8 w-8 place-items-center rounded-full bg-primary/15 text-xs font-semibold text-primary">
-                    {profileInitial}
+                  <div className={shellLayoutClasses.profileInitial}>
+                    {profileSummary.initial}
                  </div>
                  <div className="hidden min-w-0 text-left md:block">
                    <p className="truncate text-xs font-medium text-foreground">
-                      {profileName}
+                      {profileSummary.name}
                    </p>
                    <p className="truncate text-[11px] text-muted-foreground">
-                      {profileEmail}
+                      {profileSummary.email}
                    </p>
                  </div>
                  <ChevronDown
@@ -602,20 +561,17 @@ function AppLayout() {
                </button>

                {isProfileOpen ? (
-                  <div
-                    role="menu"
-                    className="absolute right-0 z-30 mt-2 w-72 rounded-xl border border-border bg-card p-3 shadow-xl"
-                  >
+                  <div role="menu" className={shellLayoutClasses.profileMenu}>
                    <p className="text-xs uppercase tracking-[0.16em] text-muted-foreground">
                      {t("ui.dev.profile.menu_title", "Account")}
                    </p>
-                    <div className="mt-2 flex flex-col gap-2 rounded-lg border border-border px-3 py-3">
+                    <div className={shellLayoutClasses.profileCard}>
                      <div>
                        <p className="truncate text-sm font-semibold text-foreground">
-                          {profileName}
+                          {profileSummary.name}
                        </p>
                        <p className="truncate text-xs text-muted-foreground">
-                          {profileEmail}
+                          {profileSummary.email}
                        </p>
                      </div>
                      <div className="flex items-center pt-1">
@@ -628,7 +584,7 @@ function AppLayout() {
                      </div>
                    </div>

-                    <div className="mt-2 rounded-lg border border-border px-3 py-3">
+                    <div className={shellLayoutClasses.settingsCard}>
                      <div className="flex items-center justify-between gap-3">
                        <div>
                          <p className="text-sm font-medium text-foreground">
@@ -636,7 +592,7 @@ function AppLayout() {
                          </p>
                          <p className="text-xs text-muted-foreground">
                            {isSessionExpiryEnabled
-                              ? sessionText
+                              ? sessionStatus.text
                              : t(
                                  "ui.dev.session.disabled",
                                  "세션 만료 비활성화",
@@ -736,7 +692,7 @@ function AppLayout() {
            </div>
          </div>
        </header>
-        <main className="min-w-0 px-5 py-6 md:px-10 md:py-10">
+        <main className={shellLayoutClasses.mainMinWidth}>
          <Outlet />
        </main>
        <RoleSwitcher />
--- a/adminfront/src/components/ui/badge.tsx
+++ b/adminfront/src/components/ui/badge.tsx
@@ -1,38 +1,21 @@
-import { type VariantProps, cva } from "class-variance-authority";
 import type * as React from "react";
+import {
+  type CommonBadgeVariant,
+  getCommonBadgeClasses,
+} from "../../../../common/ui/badge";
 import { cn } from "../../lib/utils";

-const badgeVariants = cva(
-  "inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",
-  {
-    variants: {
-      variant: {
-        default:
-          "border-transparent bg-primary text-primary-foreground shadow hover:bg-primary/90",
-        secondary:
-          "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80",
-        outline: "text-foreground",
-        muted: "border-border bg-secondary/60 text-muted-foreground",
-        success:
-          "border-transparent bg-emerald-100 text-emerald-700 dark:bg-emerald-900/40 dark:text-emerald-300",
-        warning:
-          "border-transparent bg-amber-100 text-amber-700 dark:bg-amber-900/40 dark:text-amber-200",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-    },
-  },
-);
-
-export interface BadgeProps
-  extends React.HTMLAttributes<HTMLDivElement>,
-    VariantProps<typeof badgeVariants> {}
+export interface BadgeProps extends React.HTMLAttributes<HTMLDivElement> {
+  variant?: CommonBadgeVariant;
+}

 function Badge({ className, variant, ...props }: BadgeProps) {
  return (
-    <div className={cn(badgeVariants({ variant }), className)} {...props} />
+    <div
+      className={cn(getCommonBadgeClasses({ variant }), className)}
+      {...props}
+    />
  );
 }

-export { Badge, badgeVariants };
+export { Badge };
--- a/adminfront/src/components/ui/button.tsx
+++ b/adminfront/src/components/ui/button.tsx
@@ -1,41 +1,16 @@
 import { Slot } from "@radix-ui/react-slot";
-import { type VariantProps, cva } from "class-variance-authority";
 import * as React from "react";
+import {
+  type CommonButtonSize,
+  type CommonButtonVariant,
+  getCommonButtonClasses,
+} from "../../../../common/ui/button";
 import { cn } from "../../lib/utils";

-const buttonVariants = cva(
-  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-semibold transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 ring-offset-background",
-  {
-    variants: {
-      variant: {
-        default:
-          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
-        secondary:
-          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
-        outline:
-          "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
-        ghost: "hover:bg-accent hover:text-accent-foreground",
-        destructive:
-          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
-        muted: "bg-muted text-muted-foreground hover:bg-muted/80",
-      },
-      size: {
-        default: "h-10 px-4 py-2",
-        sm: "h-9 rounded-md px-3",
-        lg: "h-11 rounded-md px-6 text-base",
-        icon: "h-10 w-10",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-      size: "default",
-    },
-  },
-);
-
 export interface ButtonProps
-  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
-    VariantProps<typeof buttonVariants> {
+  extends React.ButtonHTMLAttributes<HTMLButtonElement> {
+  variant?: CommonButtonVariant;
+  size?: CommonButtonSize;
  asChild?: boolean;
 }

@@ -44,7 +19,7 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
    const Comp = asChild ? Slot : "button";
    return (
      <Comp
-        className={cn(buttonVariants({ variant, size, className }))}
+        className={cn(getCommonButtonClasses({ variant, size }), className)}
        ref={ref}
        {...props}
      />
@@ -53,4 +28,4 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
 );
 Button.displayName = "Button";

-export { Button, buttonVariants };
+export { Button };
--- a/adminfront/src/components/ui/card.tsx
+++ b/adminfront/src/components/ui/card.tsx
@@ -1,65 +1,51 @@
 import type * as React from "react";
+import {
+  commonCardClass,
+  commonCardContentClass,
+  commonCardDescriptionClass,
+  commonCardFooterClass,
+  commonCardHeaderClass,
+  commonCardTitleClass,
+} from "../../../../common/ui/card";
 import { cn } from "../../lib/utils";

 function Card({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div
-      className={cn(
-        "rounded-2xl border border-border bg-card/90 text-card-foreground shadow-card",
-        className,
-      )}
-      {...props}
-    />
-  );
+  return <div className={cn(commonCardClass, className)} {...props} />;
 }

 function CardHeader({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div
-      className={cn("flex flex-col space-y-1.5 p-6", className)}
-      {...props}
-    />
-  );
+  return <div className={cn(commonCardHeaderClass, className)} {...props} />;
 }

 function CardTitle({
  className,
  ...props
 }: React.HTMLAttributes<HTMLHeadingElement>) {
-  return (
-    <h3
-      className={cn("text-lg font-semibold leading-none", className)}
-      {...props}
-    />
-  );
+  return <h3 className={cn(commonCardTitleClass, className)} {...props} />;
 }

 function CardDescription({
  className,
  ...props
 }: React.HTMLAttributes<HTMLParagraphElement>) {
-  return (
-    <p className={cn("text-sm text-muted-foreground", className)} {...props} />
-  );
+  return <p className={cn(commonCardDescriptionClass, className)} {...props} />;
 }

 function CardContent({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return <div className={cn("p-6 pt-0", className)} {...props} />;
+  return <div className={cn(commonCardContentClass, className)} {...props} />;
 }

 function CardFooter({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div className={cn("flex items-center p-6 pt-0", className)} {...props} />
-  );
+  return <div className={cn(commonCardFooterClass, className)} {...props} />;
 }

 export {
--- a/adminfront/src/components/ui/input.tsx
+++ b/adminfront/src/components/ui/input.tsx
@@ -1,4 +1,5 @@
 import * as React from "react";
+import { commonInputClass } from "../../../../common/ui/input";
 import { cn } from "../../lib/utils";

 export interface InputProps
@@ -9,10 +10,7 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(
    return (
      <input
        type={type}
-        className={cn(
-          "flex h-10 w-full rounded-lg border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
-          className,
-        )}
+        className={cn(commonInputClass, className)}
        ref={ref}
        {...props}
      />
--- a/adminfront/src/features/tenants/routes/TenantListPage.tsx
+++ b/adminfront/src/features/tenants/routes/TenantListPage.tsx
@@ -21,6 +21,12 @@ import {
 } from "lucide-react";
 import * as React from "react";
 import { Link, useNavigate } from "react-router-dom";
+import {
+  sortItems,
+  toggleSort,
+  type SortConfig,
+  type SortResolverMap,
+} from "../../../../../common/core/utils";
 import { RoleGuard } from "../../../components/auth/RoleGuard";
 import { Badge } from "../../../components/ui/badge";
 import { Button } from "../../../components/ui/button";
@@ -82,10 +88,7 @@ import {
 const tenantCSVTemplate =
  "name,type,parent_tenant_slug,slug,memo,email_domain,visibility,org_unit_type\n";

-type SortConfig = {
-  key: keyof TenantSummary | "recursiveMemberCount";
-  direction: "asc" | "desc";
-};
+type TenantSortKey = keyof TenantSummary | "recursiveMemberCount";

 const getTenantIcon = (type?: string) => {
  switch (type?.toUpperCase()) {
@@ -225,7 +228,8 @@ function TenantListPage() {
  const [viewMode, setViewMode] = React.useState<"list" | "hierarchy">("list");
  const [selectedIds, setSelectedIds] = React.useState<string[]>([]);
  const [search, setSearch] = React.useState("");
-  const [sortConfig, setSortConfig] = React.useState<SortConfig | null>(null);
+  const [sortConfig, setSortConfig] =
+    React.useState<SortConfig<TenantSortKey> | null>(null);
  const fileInputRef = React.useRef<HTMLInputElement | null>(null);
  const [importMessage, setImportMessage] = React.useState("");
  const [previewRows, setPreviewRows] = React.useState<
@@ -363,6 +367,17 @@ function TenantListPage() {
  const allTenants = query.data?.items ?? [];
  const importParentOptionGroups =
    buildTenantImportParentOptionGroups(allTenants);
+  const tenantSortResolvers = React.useMemo<
+    SortResolverMap<
+      TenantSummary & { recursiveMemberCount: number },
+      TenantSortKey
+    >
+  >(
+    () => ({
+      recursiveMemberCount: (tenant) => tenant.recursiveMemberCount,
+    }),
+    [],
+  );
  const tenants = React.useMemo(() => {
    // 1. Calculate recursive counts
    // buildTenantFullTree returns subTree which represents roots, but it also mutates the mapped nodes internally.
@@ -396,38 +411,14 @@ function TenantListPage() {
      );
    }

-    if (sortConfig) {
-      enriched.sort((a, b) => {
-        const aValue = a[sortConfig.key as keyof typeof a];
-        const bValue = b[sortConfig.key as keyof typeof b];
+    return sortItems(enriched, sortConfig, tenantSortResolvers);
+  }, [allTenants, search, sortConfig, tenantSortResolvers]);

-        if (aValue === bValue) return 0;
-        if (aValue === null || aValue === undefined) return 1;
-        if (bValue === null || bValue === undefined) return -1;
-
-        if (sortConfig.direction === "asc") {
-          return aValue < bValue ? -1 : 1;
-        }
-        return aValue > bValue ? -1 : 1;
-      });
-    }
-
-    return enriched;
-  }, [allTenants, search, sortConfig]);
-
-  const requestSort = (key: SortConfig["key"]) => {
-    let direction: "asc" | "desc" = "asc";
-    if (
-      sortConfig &&
-      sortConfig.key === key &&
-      sortConfig.direction === "asc"
-    ) {
-      direction = "desc";
-    }
-    setSortConfig({ key, direction });
+  const requestSort = (key: TenantSortKey) => {
+    setSortConfig((current) => toggleSort(current, key));
  };

-  const getSortIcon = (key: SortConfig["key"]) => {
+  const getSortIcon = (key: TenantSortKey) => {
    if (!sortConfig || sortConfig.key !== key) {
      return <ArrowUpDown size={14} className="ml-1 opacity-50" />;
    }
--- a/adminfront/src/features/users/UserListPage.tsx
+++ b/adminfront/src/features/users/UserListPage.tsx
@@ -50,6 +50,12 @@ import {
  TableRow,
 } from "../../components/ui/table";
 import { toast } from "../../components/ui/use-toast";
+import {
+  sortItems,
+  toggleSort,
+  type SortConfig,
+  type SortResolverMap,
+} from "../../../../common/core/utils";
 import {
  type UserSummary,
  bulkDeleteUsers,
@@ -71,10 +77,7 @@ type UserSchemaField = {
  type: string;
 };

-type SortConfig = {
-  key: string;
-  direction: "asc" | "desc";
-};
+type UserSortKey = string;

 function UserListPage() {
  const navigate = useNavigate();
@@ -86,7 +89,8 @@ function UserListPage() {
    Record<string, boolean>
  >({});
  const [selectedUserIds, setSelectedUserIds] = React.useState<string[]>([]);
-  const [sortConfig, setSortConfig] = React.useState<SortConfig | null>(null);
+  const [sortConfig, setSortConfig] =
+    React.useState<SortConfig<UserSortKey> | null>(null);

  const limit = 1000;
  const offset = (page - 1) * limit;
@@ -219,60 +223,40 @@ function UserListPage() {
      : null;

  const rawItems = query.data?.items ?? [];
+  const userSortResolvers = React.useMemo<
+    SortResolverMap<UserSummary, UserSortKey>
+  >(
+    () =>
+      userSchema.reduce<SortResolverMap<UserSummary, UserSortKey>>(
+        (accumulator, field) => {
+          accumulator[field.key] = (user) => {
+            const value = user.metadata?.[field.key];
+            return typeof value === "string" ||
+              typeof value === "number" ||
+              typeof value === "boolean"
+              ? value
+              : null;
+          };
+          return accumulator;
+        },
+        {
+          name_email: (user) =>
+            `${user.name ?? ""} ${user.email ?? ""} ${user.phone ?? ""}`,
+          tenant_dept: (user) =>
+            `${user.tenant?.name ?? user.tenantSlug ?? ""} ${user.department ?? ""}`,
+        },
+      ),
+    [userSchema],
+  );
  const items = React.useMemo(() => {
-    const sorted = [...rawItems];
-    if (sortConfig) {
-      sorted.sort((a, b) => {
-        let aValue: string | number | boolean | null | undefined;
-        let bValue: string | number | boolean | null | undefined;
+    return sortItems(rawItems, sortConfig, userSortResolvers);
+  }, [rawItems, sortConfig, userSortResolvers]);

-        if (sortConfig.key === "name_email") {
-          aValue = a.name?.toLowerCase() || "";
-          bValue = b.name?.toLowerCase() || "";
-        } else if (sortConfig.key === "tenant_dept") {
-          aValue =
-            (a.tenant?.name || a.tenantSlug || "").toLowerCase() +
-            (a.department || "").toLowerCase();
-          bValue =
-            (b.tenant?.name || b.tenantSlug || "").toLowerCase() +
-            (b.department || "").toLowerCase();
-        } else {
-          aValue = (a as Record<string, unknown>)[sortConfig.key] as
-            | string
-            | number
-            | boolean;
-          bValue = (b as Record<string, unknown>)[sortConfig.key] as
-            | string
-            | number
-            | boolean;
-        }
-
-        if (aValue === bValue) return 0;
-        if (aValue === null || aValue === undefined) return 1;
-        if (bValue === null || bValue === undefined) return -1;
-
-        if (sortConfig.direction === "asc") {
-          return aValue < bValue ? -1 : 1;
-        }
-        return aValue > bValue ? -1 : 1;
-      });
-    }
-    return sorted;
-  }, [rawItems, sortConfig]);
-
-  const requestSort = (key: SortConfig["key"]) => {
-    let direction: "asc" | "desc" = "asc";
-    if (
-      sortConfig &&
-      sortConfig.key === key &&
-      sortConfig.direction === "asc"
-    ) {
-      direction = "desc";
-    }
-    setSortConfig({ key, direction });
+  const requestSort = (key: UserSortKey) => {
+    setSortConfig((current) => toggleSort(current, key));
  };

-  const getSortIcon = (key: SortConfig["key"]) => {
+  const getSortIcon = (key: UserSortKey) => {
    if (!sortConfig || sortConfig.key !== key) {
      return <ArrowUpDown size={14} className="ml-1 opacity-50" />;
    }
--- a/adminfront/src/index.css
+++ b/adminfront/src/index.css
@@ -1,3 +1,5 @@
+@import "../../common/theme/base.css";
+
@tailwind base;
@tailwind components;
@tailwind utilities;
@@ -24,37 +26,7 @@
    --input: 215 25% 24%;
    --ring: 209 79% 52%;
    --radius: 0.75rem;
-  }
-
-  .light {
-    --background: 0 0% 98%;
-    --foreground: 223 25% 12%;
-    --card: 0 0% 100%;
-    --card-foreground: 223 25% 12%;
-    --popover: 0 0% 100%;
-    --popover-foreground: 223 25% 12%;
-    --primary: 209 79% 52%;
-    --primary-foreground: 0 0% 100%;
-    --secondary: 220 17% 94%;
-    --secondary-foreground: 223 25% 20%;
-    --muted: 223 15% 45%;
-    --muted-foreground: 223 15% 45%;
-    --accent: 40 96% 62%;
-    --accent-foreground: 223 25% 12%;
-    --destructive: 0 84% 60%;
-    --destructive-foreground: 0 0% 100%;
-    --border: 220 17% 90%;
-    --input: 220 17% 90%;
-    --ring: 209 79% 52%;
-  }
-
-  * {
-    @apply border-border;
-  }
-
-  body {
-    @apply min-h-screen bg-background font-sans text-foreground antialiased;
-    background-image: radial-gradient(
+    --app-background-image: radial-gradient(
        circle at 10% 18%,
        rgba(54, 211, 153, 0.16),
        transparent 28%
@@ -70,14 +42,4 @@
        transparent 30%
      );
  }
-
-  a {
-    @apply text-inherit no-underline;
-  }
-}
-
-@layer components {
-  .glass-panel {
-    @apply rounded-2xl border border-border bg-card/85 shadow-card backdrop-blur;
-  }
 }
--- a/adminfront/src/lib/auth.ts
+++ b/adminfront/src/lib/auth.ts
@@ -1,31 +1,23 @@
 import { UserManager, WebStorageStateStore } from "oidc-client-ts";
 import type { AuthProviderProps } from "react-oidc-context";
 import {
-  buildAdminAuthRedirectUris,
-  resolveAdminPublicOrigin,
-} from "./authConfig";
+  buildCommonOidcRuntimeConfig,
+  buildCommonUserManagerSettings,
+} from "../../../common/core/auth";
+import { resolveAdminPublicOrigin } from "./authConfig";

 const adminPublicOrigin = resolveAdminPublicOrigin(
  import.meta.env.VITE_ADMIN_PUBLIC_URL,
  window.location.origin,
 );
-const adminRedirectUris = buildAdminAuthRedirectUris(adminPublicOrigin);

-export const oidcConfig: AuthProviderProps = {
-  authority: import.meta.env.VITE_OIDC_AUTHORITY || "https://sso.hmac.kr/oidc", // Gateway Proxy URL
-  client_id: import.meta.env.VITE_OIDC_CLIENT_ID || "adminfront",
-  redirect_uri: adminRedirectUris.redirectUri,
-  response_type: "code",
-  scope: "openid offline_access profile email", // offline_access for refresh token
-  post_logout_redirect_uri: adminRedirectUris.postLogoutRedirectUri,
-  popup_redirect_uri: adminRedirectUris.popupRedirectUri,
+export const oidcConfig: AuthProviderProps = buildCommonOidcRuntimeConfig({
+  authority: import.meta.env.VITE_OIDC_AUTHORITY || "https://sso.hmac.kr/oidc",
+  clientId: import.meta.env.VITE_OIDC_CLIENT_ID || "adminfront",
+  origin: adminPublicOrigin,
  userStore: new WebStorageStateStore({ store: window.localStorage }),
-  automaticSilentRenew: false,
-};
-
-export const userManager = new UserManager({
-  ...oidcConfig,
-  authority: oidcConfig.authority || "",
-  client_id: oidcConfig.client_id || "",
-  redirect_uri: oidcConfig.redirect_uri || "",
 });
+
+export const userManager = new UserManager(
+  buildCommonUserManagerSettings(oidcConfig),
+);
--- a/adminfront/src/lib/i18n.ts
+++ b/adminfront/src/lib/i18n.ts
@@ -1,148 +1,21 @@
-const LOCALE_STORAGE_KEY = "locale";
-const DEFAULT_LOCALE = "ko";
-const SUPPORTED_LOCALES = ["ko", "en"] as const;
-
-type Locale = (typeof SUPPORTED_LOCALES)[number];
-
-type TomlValue = string | TomlObject;
-
-interface TomlObject {
-  [key: string]: TomlValue;
-}
-
-function isSupportedLocale(value: string): value is Locale {
-  return (SUPPORTED_LOCALES as readonly string[]).includes(value);
-}
-
-function parseToml(raw: string): TomlObject {
-  const lines = raw.split(/\r?\n/);
-  const root: TomlObject = {};
-  let currentPath: string[] = [];
-
-  for (const rawLine of lines) {
-    const line = rawLine.trim();
-    if (!line || line.startsWith("#")) {
-      continue;
-    }
-
-    if (line.startsWith("[") && line.endsWith("]")) {
-      const sectionName = line.slice(1, -1).trim();
-      currentPath = sectionName
-        ? sectionName
-            .split(".")
-            .map((part) => part.trim())
-            .filter(Boolean)
-        : [];
-      continue;
-    }
-
-    const eqIndex = line.indexOf("=");
-    if (eqIndex === -1) {
-      continue;
-    }
-
-    const key = line.slice(0, eqIndex).trim();
-    const valueRaw = line.slice(eqIndex + 1).trim();
-    if (!key) {
-      continue;
-    }
-
-    let value = valueRaw;
-    if (
-      (value.startsWith('"') && value.endsWith('"')) ||
-      (value.startsWith("'") && value.endsWith("'"))
-    ) {
-      value = value.slice(1, -1);
-    }
-
-    let cursor: TomlObject = root;
-    for (const section of currentPath) {
-      if (!cursor[section] || typeof cursor[section] === "string") {
-        cursor[section] = {};
-      }
-      cursor = cursor[section] as TomlObject;
-    }
-
-    cursor[key] = value;
-  }
-
-  return root;
-}
-
-function getValue(target: TomlObject, key: string): string | undefined {
-  const parts = key.split(".");
-  let cursor: TomlValue = target;
-  for (const part of parts) {
-    if (typeof cursor !== "object" || cursor === null) {
-      return undefined;
-    }
-    cursor = (cursor as TomlObject)[part];
-    if (cursor === undefined) {
-      return undefined;
-    }
-  }
-  return typeof cursor === "string" ? cursor : undefined;
-}
-
-function detectLocale(): Locale {
-  if (typeof window === "undefined") {
-    return DEFAULT_LOCALE;
-  }
-
-  const stored = window.localStorage.getItem(LOCALE_STORAGE_KEY);
-  if (stored && isSupportedLocale(stored)) {
-    return stored;
-  }
-
-  const pathLocale = window.location.pathname.split("/")[1];
-  if (pathLocale && isSupportedLocale(pathLocale)) {
-    return pathLocale;
-  }
-
-  const browserLang = window.navigator.language.toLowerCase();
-  if (browserLang.startsWith("ko")) {
-    return "ko";
-  }
-
-  return DEFAULT_LOCALE;
-}
+import { createTomlTranslator } from "../../../common/core/i18n";

+// eslint-disable-next-line import/no-unresolved
+import commonEnRaw from "../../../common/locales/en.toml?raw";
+// eslint-disable-next-line import/no-unresolved
+import commonKoRaw from "../../../common/locales/ko.toml?raw";
 // eslint-disable-next-line import/no-unresolved
 import enRaw from "../locales/en.toml?raw";
 // Vite ?raw import는 런타임 상수로 번들됩니다.
 // eslint-disable-next-line import/no-unresolved
 import koRaw from "../locales/ko.toml?raw";

-const translations: Record<Locale, TomlObject> = {
-  ko: parseToml(koRaw),
-  en: parseToml(enRaw),
-};
-
-function formatTemplate(
-  template: string,
-  vars?: Record<string, string | number>,
-): string {
-  if (!vars) {
-    return template;
-  }
-  return template.replace(/\{\{\s*(\w+)\s*\}\}/g, (match, key) => {
-    const value = vars[key];
-    if (value === undefined || value === null) {
-      return match;
-    }
-    return String(value);
-  });
-}
-
-export function t(
-  key: string,
-  fallback?: string,
-  vars?: Record<string, string | number>,
-): string {
-  const locale = detectLocale();
-  const value = getValue(translations[locale], key);
-  if (value && value.length > 0) {
-    return formatTemplate(value, vars);
-  }
-  return formatTemplate(fallback ?? key, vars);
-}
+export const t = createTomlTranslator(
+  {
+    ko: [commonKoRaw, koRaw],
+    en: [commonEnRaw, enRaw],
+  },
+  {
+    normalizeEscapedNewlines: true,
+  },
+);
--- a/adminfront/src/lib/sessionSliding.ts
+++ b/adminfront/src/lib/sessionSliding.ts
@@ -1,106 +1,6 @@
-export const SESSION_RENEW_THRESHOLD_MS = 10 * 60 * 1000;
-export const SESSION_RENEW_THROTTLE_MS = 30 * 1000;
-
-type SlidingSessionRenewDecisionParams = {
-  expiresAtSec?: number | null;
-  nowMs: number;
-  isEnabled: boolean;
-  isAuthenticated: boolean;
-  isLoading: boolean;
-  isRenewInFlight: boolean;
-  lastAttemptAtMs: number;
-  thresholdMs?: number;
-  throttleMs?: number;
-};
-
-export function shouldAttemptSlidingSessionRenew({
-  expiresAtSec,
-  nowMs,
-  isEnabled,
-  isAuthenticated,
-  isLoading,
-  isRenewInFlight,
-  lastAttemptAtMs,
-  thresholdMs = SESSION_RENEW_THRESHOLD_MS,
-  throttleMs = SESSION_RENEW_THROTTLE_MS,
-}: SlidingSessionRenewDecisionParams) {
-  if (!isEnabled || !isAuthenticated || isLoading || isRenewInFlight) {
-    return false;
-  }
-
-  if (typeof expiresAtSec !== "number") {
-    console.debug(
-      "[sessionSliding] expiresAtSec is not a number, skipping renew",
-    );
-    return false;
-  }
-
-  const remainingMs = expiresAtSec * 1000 - nowMs;
-  const remainingMin = Math.floor(remainingMs / 1000 / 60);
-
-  if (remainingMs <= 0) {
-    console.debug("[sessionSliding] Session already expired, skipping renew");
-    return false;
-  }
-
-  if (remainingMs > thresholdMs) {
-    return false;
-  }
-
-  if (nowMs - lastAttemptAtMs < throttleMs) {
-    console.debug("[sessionSliding] Throttling renewal attempt");
-    return false;
-  }
-
-  console.info(
-    `[sessionSliding] Attempting sliding session renewal. Remaining: ${remainingMin}m`,
-  );
-  return true;
-}
-
-export function shouldAttemptUnlimitedSessionRenew({
-  expiresAtSec,
-  nowMs,
-  isEnabled,
-  isAuthenticated,
-  isLoading,
-  isRenewInFlight,
-  lastAttemptAtMs,
-  thresholdMs = SESSION_RENEW_THRESHOLD_MS,
-  throttleMs = SESSION_RENEW_THROTTLE_MS,
-}: SlidingSessionRenewDecisionParams) {
-  if (isEnabled || !isAuthenticated || isLoading || isRenewInFlight) {
-    return false;
-  }
-
-  if (typeof expiresAtSec !== "number") {
-    console.debug(
-      "[sessionSliding] expiresAtSec is not a number, skipping unlimited renew",
-    );
-    return false;
-  }
-
-  const remainingMs = expiresAtSec * 1000 - nowMs;
-  const remainingMin = Math.floor(remainingMs / 1000 / 60);
-
-  if (remainingMs <= 0) {
-    console.debug(
-      "[sessionSliding] Session already expired, skipping unlimited renew",
-    );
-    return false;
-  }
-
-  if (remainingMs > thresholdMs) {
-    return false;
-  }
-
-  if (nowMs - lastAttemptAtMs < throttleMs) {
-    console.debug("[sessionSliding] Throttling unlimited renewal attempt");
-    return false;
-  }
-
-  console.info(
-    `[sessionSliding] Attempting unlimited session renewal. Remaining: ${remainingMin}m`,
-  );
-  return true;
-}
+export {
+  DEFAULT_SESSION_RENEW_THROTTLE_MS as SESSION_RENEW_THROTTLE_MS,
+  DEFAULT_SESSION_RENEW_THRESHOLD_MS as SESSION_RENEW_THRESHOLD_MS,
+  shouldAttemptSlidingSessionRenew,
+  shouldAttemptUnlimitedSessionRenew,
+} from "../../../common/core/session";
--- a/adminfront/src/lib/sort.test.ts
+++ b/adminfront/src/lib/sort.test.ts
@@ -0,0 +1,72 @@
+import { describe, expect, it } from "vitest";
+import {
+  compareNullableValues,
+  sortItems,
+  toggleSort,
+  type SortConfig,
+} from "../../../common/core/utils";
+
+describe("shared sort helpers", () => {
+  it("toggles sort direction for the same key", () => {
+    expect(toggleSort<string>(null, "name")).toEqual({
+      key: "name",
+      direction: "asc",
+    });
+
+    expect(
+      toggleSort<string>({ key: "name", direction: "asc" }, "name"),
+    ).toEqual({
+      key: "name",
+      direction: "desc",
+    });
+
+    expect(
+      toggleSort<string>({ key: "name", direction: "desc" }, "status"),
+    ).toEqual({
+      key: "status",
+      direction: "asc",
+    });
+  });
+
+  it("compares nullable values with nulls last", () => {
+    expect(compareNullableValues("a", "b", "asc")).toBeLessThan(0);
+    expect(compareNullableValues("a", "b", "desc")).toBeGreaterThan(0);
+    expect(compareNullableValues(null, "b", "asc")).toBeGreaterThan(0);
+    expect(compareNullableValues("b", null, "asc")).toBeLessThan(0);
+  });
+
+  it("sorts items with resolver maps", () => {
+    const items = [
+      {
+        id: "2",
+        name: "Beta",
+        metadata: { score: 2 },
+      },
+      {
+        id: "3",
+        name: "gamma",
+        metadata: {},
+      },
+      {
+        id: "1",
+        name: "alpha",
+        metadata: { score: 1 },
+      },
+    ];
+
+    const nameSort: SortConfig<"name"> = { key: "name", direction: "asc" };
+    expect(sortItems(items, nameSort).map((item) => item.id)).toEqual([
+      "1",
+      "2",
+      "3",
+    ]);
+
+    const scoreSort: SortConfig<"score"> = { key: "score", direction: "asc" };
+    expect(
+      sortItems(items, scoreSort, {
+        score: (item) =>
+          typeof item.metadata.score === "number" ? item.metadata.score : null,
+      }).map((item) => item.id),
+    ).toEqual(["1", "2", "3"]);
+  });
+});
--- a/adminfront/src/lib/utils.ts
+++ b/adminfront/src/lib/utils.ts
@@ -1,8 +1,10 @@
 import { type ClassValue, clsx } from "clsx";
 import { twMerge } from "tailwind-merge";

+import { mergeClassNames } from "../../../common/core/utils";
+
 export function cn(...inputs: ClassValue[]) {
-  return twMerge(clsx(inputs));
+  return mergeClassNames(twMerge, [clsx(inputs)]);
 }

 export function generateSecurePassword(length = 16): string {
--- a/adminfront/src/locales/en.toml
+++ b/adminfront/src/locales/en.toml
@@ -327,15 +327,6 @@ no_custom = "No custom fields defined for this tenant."
 [msg.admin.users.list.registry]
 count = "Count"

-[msg.common]
-error = "Error"
-loading = "Loading..."
-no_description = "No Description."
-parsing = "Parsing data..."
-requesting = "Requesting..."
-saving = "Saving..."
-unknown_error = "unknown error"
-
 [msg.dev]
 logout_confirm = "Are you sure you want to log out?"

@@ -1281,63 +1272,6 @@ name = "Name"
 role = "Role"


-[ui.common]
-add = "Add"
-all = "All"
-admin_only = "Admin Only"
-assign = "Assign"
-back = "Back"
-cancel = "Cancel"
-change_file = "Change File"
-clear_search = "Clear Search"
-close = "Close"
-collapse = "Collapse"
-confirm = "Confirm"
-copy = "Copy"
-create = "Create"
-delete = "Delete"
-details = "Details"
-edit = "Edit"
-export = "Export"
-fail = "Fail"
-go_home = "Go Home"
-view = "View"
-hyphen = "-"
-manage = "Manage"
-na = "N/A"
-never = "Never"
-next = "Next"
-none = "None"
-page_of = "Page {{page}} of {{total}}"
-prev = "Prev"
-previous = "Previous"
-qr = "QR"
-reset = "Reset"
-read_only = "Read Only"
-refresh = "Refresh"
-remove = "Remove"
-resend = "Resend"
-retry = "Retry"
-save = "Save"
-search = "Search"
-select = "Select"
-select_file = "Select File"
-select_placeholder = "Select Placeholder"
-show_more = "Show More"
-language = "Language"
-language_ko = "Korean"
-language_en = "English"
-success = "Success"
-theme_dark = "Dark"
-theme_light = "Light"
-theme_toggle = "Theme Toggle"
-unknown = "Unknown"
-
-[ui.common.badge]
-admin_only = "Admin only"
-command_only = "Command only"
-system = "System"
-
 [ui.common.role]
 admin = "Admin"
 rp_admin = "RP Admin"
--- a/adminfront/src/locales/ko.toml
+++ b/adminfront/src/locales/ko.toml
@@ -329,15 +329,6 @@ no_custom = "이 테넌트에 정의된 커스텀 필드가 없습니다."
 [msg.admin.users.list.registry]
 count = "총 {{count}}명의 사용자가 등록되어 있습니다."

-[msg.common]
-error = "오류가 발생했습니다."
-loading = "로딩 중..."
-no_description = "설명이 없습니다."
-parsing = "데이터 파싱 중..."
-requesting = "요청 중..."
-saving = "저장 중..."
-unknown_error = "알 수 없는 오류"
-
 [msg.dev]
 logout_confirm = "로그아웃 하시겠습니까?"

@@ -1283,63 +1274,6 @@ name = "이름"
 role = "역할"


-[ui.common]
-add = "추가"
-all = "전체"
-admin_only = "관리자 전용"
-assign = "할당"
-back = "돌아가기"
-cancel = "취소"
-change_file = "파일 변경"
-clear_search = "검색 초기화"
-close = "닫기"
-collapse = "접기"
-confirm = "확인"
-copy = "복사"
-create = "생성"
-delete = "삭제"
-details = "상세정보"
-edit = "편집"
-export = "내보내기"
-fail = "실패"
-go_home = "홈으로"
-view = "보기"
-hyphen = "-"
-manage = "관리"
-na = "N/A"
-never = "Never"
-next = "다음"
-none = "없음"
-page_of = "Page {{page}} of {{total}}"
-prev = "이전"
-previous = "이전"
-qr = "QR"
-reset = "초기화"
-read_only = "읽기 전용"
-refresh = "새로고침"
-remove = "제외"
-resend = "재발송"
-retry = "다시 시도"
-save = "저장"
-search = "검색"
-select = "선택"
-select_file = "파일 선택"
-select_placeholder = "선택하세요"
-show_more = "+ 더보기"
-language = "언어"
-language_ko = "한국어"
-language_en = "English"
-success = "성공"
-theme_dark = "Dark"
-theme_light = "Light"
-theme_toggle = "테마 전환"
-unknown = "Unknown"
-
-[ui.common.badge]
-admin_only = "Admin only"
-command_only = "Command only"
-system = "System"
-
 [ui.common.role]
 admin = "Admin"
 rp_admin = "RP Admin"
--- a/adminfront/src/locales/template.toml
+++ b/adminfront/src/locales/template.toml
@@ -337,15 +337,6 @@ no_custom = ""
 [msg.admin.users.list.registry]
 count = ""

-[msg.common]
-error = ""
-loading = ""
-no_description = ""
-parsing = ""
-requesting = ""
-saving = ""
-unknown_error = ""
-
 [msg.dev]
 logout_confirm = ""

@@ -1261,63 +1252,6 @@ name = ""
 role = ""


-[ui.common]
-add = ""
-all = ""
-admin_only = ""
-assign = ""
-back = ""
-cancel = ""
-change_file = ""
-clear_search = ""
-close = ""
-collapse = ""
-confirm = ""
-copy = ""
-create = ""
-delete = ""
-details = ""
-edit = ""
-export = ""
-fail = ""
-go_home = ""
-view = ""
-hyphen = ""
-manage = ""
-na = ""
-never = ""
-next = ""
-none = ""
-page_of = ""
-prev = ""
-previous = ""
-qr = ""
-reset = ""
-read_only = ""
-refresh = ""
-remove = ""
-resend = ""
-retry = ""
-save = ""
-search = ""
-select = ""
-select_file = ""
-select_placeholder = ""
-show_more = ""
-language = ""
-language_ko = ""
-language_en = ""
-success = ""
-theme_dark = ""
-theme_light = ""
-theme_toggle = ""
-unknown = ""
-
-[ui.common.badge]
-admin_only = ""
-command_only = ""
-system = ""
-
 [ui.common.role]
 admin = ""
 rp_admin = ""
--- a/adminfront/tailwind.config.ts
+++ b/adminfront/tailwind.config.ts
@@ -3,7 +3,11 @@ import { fontFamily } from "tailwindcss/defaultTheme";

 const config: Config = {
  darkMode: ["class"],
-  content: ["./index.html", "./src/**/*.{ts,tsx}"],
+  content: [
+    "./index.html",
+    "./src/**/*.{ts,tsx}",
+    "../common/**/*.{ts,tsx,css}",
+  ],
  theme: {
    container: {
      center: true,
--- a/backend/cmd/server/main.go
+++ b/backend/cmd/server/main.go
@@ -376,6 +376,7 @@ func main() {
 	devHandler.HeadlessJWKS = headlessJWKSCache
 	devHandler.AuditRepo = auditRepo
 	devHandler.RPUserMetadataRepo = rpUserMetadataRepo
+	devHandler.RPUsageQueries = rpUsageQueryRepo
 	tenantHandler := handler.NewTenantHandler(db, tenantService, userRepo, userProjectionRepo, ketoService, ketoOutboxRepo, kratosAdminService, sharedLinkService)
 	userGroupHandler := handler.NewUserGroupHandler(userGroupService)
 	relyingPartyHandler := handler.NewRelyingPartyHandler(relyingPartyService, kratosAdminService)
@@ -825,6 +826,7 @@ func main() {
 	dev.Get("/consents", devHandler.ListConsents)
 	dev.Delete("/consents", devHandler.RevokeConsents)
 	dev.Get("/audit-logs", devHandler.ListAuditLogs)
+	dev.Get("/rp-usage/daily", devHandler.GetRPUsageDaily)

 	// [New] Developer Registration Flow
 	dev.Post("/developer-request", devHandler.RequestDeveloperAccess)
--- a/backend/internal/handler/dev_handler.go
+++ b/backend/internal/handler/dev_handler.go
@@ -39,6 +39,7 @@ type DevHandler struct {
 	TenantSvc          service.TenantService
 	DeveloperSvc       *service.DeveloperService
 	RPUserMetadataRepo repository.RPUserMetadataRepository
+	RPUsageQueries     domain.RPUsageQueryRepository
 	Auth               interface {
 		GetEnrichedProfile(c *fiber.Ctx) (*domain.UserProfileResponse, error)
 	}
@@ -94,6 +95,13 @@ type devStatsResponse struct {
 	AuthFailures   int64 `json:"auth_failures_24h"`
 }

+type devRPUsageDailyResponse struct {
+	Items    []domain.RPUsageDailyMetric `json:"items"`
+	Days     int                         `json:"days"`
+	Period   string                      `json:"period"`
+	TenantID string                      `json:"tenantId,omitempty"`
+}
+
 type clientSummary struct {
 	ID                               string                 `json:"id"`
 	Name                             string                 `json:"name"`
@@ -369,16 +377,12 @@ func (h *DevHandler) canViewClientByPermit(c *fiber.Ctx, profile *domain.UserPro
 	if role == domain.RoleSuperAdmin {
 		return true
 	}
-
-	if h.hasDirectRelyingPartyOperatorRelation(c, profile, summary.ID) {
+	if canAccessClientByLegacyScope(profile, summary) {
 		return true
 	}

-	clientTenantID := resolveClientTenantID(summary)
-	if role != domain.RoleUser && clientTenantID != "" {
-		if allowed, err := h.checkProfileKetoPermission(c, profile, "Tenant", clientTenantID, "view_dev_console"); err == nil && allowed {
-			return true
-		}
+	if h.hasDirectRelyingPartyOperatorRelation(c, profile, summary.ID) {
+		return true
 	}

 	allowed, err := h.checkProfileKetoPermission(c, profile, "RelyingParty", summary.ID, "view")
@@ -512,6 +516,26 @@ func mergeStringSets(dst map[string]struct{}, src map[string]struct{}) map[strin
 	return dst
 }

+func shouldScopeDashboardToExplicitClients(role string) bool {
+	switch normalizeUserRole(role) {
+	case domain.RoleRPAdmin, domain.RoleUser:
+		return true
+	default:
+		return false
+	}
+}
+
+func clientIDSetFromSummaries(items []clientSummary) map[string]struct{} {
+	ids := make(map[string]struct{}, len(items))
+	for _, item := range items {
+		id := strings.TrimSpace(item.ID)
+		if id != "" {
+			ids[id] = struct{}{}
+		}
+	}
+	return ids
+}
+
 func canAccessClientByLegacyScope(profile *domain.UserProfileResponse, summary clientSummary) bool {
 	if profile == nil {
 		return false
@@ -1009,6 +1033,70 @@ func (h *DevHandler) checkAppManagerPermission(c *fiber.Ctx) (bool, error) {
 	return allowed, nil
 }

+func (h *DevHandler) listVisibleClientSummaries(
+	c *fiber.Ctx,
+	profile *domain.UserProfileResponse,
+	limit int,
+	offset int,
+) ([]clientSummary, error) {
+	if profile == nil {
+		return nil, fiber.NewError(fiber.StatusUnauthorized, "unauthorized: authentication required")
+	}
+	role := normalizeUserRole(profile.Role)
+	if !isDevConsoleRoleAllowed(role) {
+		return nil, fiber.NewError(fiber.StatusForbidden, "forbidden")
+	}
+
+	userTenantID := tenantIDFromProfile(profile)
+	isSuperAdmin := role == domain.RoleSuperAdmin
+	allowedClientIDs := managedClientIDsFromProfile(profile)
+
+	isAppManager, err := h.checkAppManagerPermission(c)
+	if err != nil {
+		slog.Error("Failed to check app manager permission", "error", err)
+	}
+
+	clients, err := h.Hydra.ListClients(c.Context(), limit, offset)
+	if err != nil {
+		return nil, err
+	}
+
+	items := make([]clientSummary, 0, len(clients))
+	for _, client := range clients {
+		if isHiddenSystemClient(client) {
+			continue
+		}
+
+		summary := h.mapClientSummary(client)
+		canViewByPermit := h.canViewClientByPermit(c, profile, summary)
+
+		if summary.Type == "private" && !isAppManager && !canViewByPermit {
+			continue
+		}
+
+		if !isSuperAdmin {
+			clientTenantID, _ := summary.Metadata["tenant_id"].(string)
+			if clientTenantID != userTenantID && !canViewByPermit {
+				continue
+			}
+		}
+
+		if role == domain.RoleRPAdmin && len(allowedClientIDs) > 0 {
+			if _, ok := allowedClientIDs[summary.ID]; !ok && !canViewByPermit {
+				continue
+			}
+		}
+
+		if !isSuperAdmin && !canAccessClientByLegacyScope(profile, summary) && !canViewByPermit {
+			continue
+		}
+
+		items = append(items, h.redactClientSecretUnlessAllowed(c, profile, summary))
+	}
+
+	return items, nil
+}
+
 func extractAuthClaimsFromBearer(authHeader string) (string, string) {
 	authHeader = strings.TrimSpace(authHeader)
 	if !strings.HasPrefix(strings.ToLower(authHeader), "bearer ") {
@@ -1133,72 +1221,22 @@ func (h *DevHandler) ListClients(c *fiber.Ctx) error {
 	}

 	profile := h.getCurrentProfile(c)
-	if profile == nil {
-		return errorJSON(c, fiber.StatusUnauthorized, "unauthorized: authentication required")
-	}
-	role := normalizeUserRole(profile.Role)
-	if !isDevConsoleRoleAllowed(role) {
-		return errorJSON(c, fiber.StatusForbidden, "forbidden")
-	}
-
-	userTenantID := tenantIDFromProfile(profile)
-	isSuperAdmin := role == domain.RoleSuperAdmin
-	allowedClientIDs := managedClientIDsFromProfile(profile)
-
-	isAppManager, err := h.checkAppManagerPermission(c)
+	items, err := h.listVisibleClientSummaries(c, profile, limit, offset)
 	if err != nil {
-		slog.Error("Failed to check app manager permission", "error", err)
-	}
-
-	clients, err := h.Hydra.ListClients(c.Context(), limit, offset)
-	if err != nil {
-		if errors.Is(err, service.ErrHydraNotFound) {
-			return errorJSON(c, fiber.StatusNotFound, "clients not found")
-		}
+		status := fiber.StatusInternalServerError
 		errMsg := err.Error()
-		if strings.Contains(errMsg, "connection refused") || strings.Contains(errMsg, "dial tcp") {
-			return errorJSON(c, fiber.StatusServiceUnavailable, "Hydra service is unavailable. Please check if Ory Hydra is running.")
+		var fiberErr *fiber.Error
+		if errors.As(err, &fiberErr) {
+			status = fiberErr.Code
+			errMsg = fiberErr.Message
+		} else if errors.Is(err, service.ErrHydraNotFound) {
+			status = fiber.StatusNotFound
+			errMsg = "clients not found"
+		} else if strings.Contains(errMsg, "connection refused") || strings.Contains(errMsg, "dial tcp") {
+			status = fiber.StatusServiceUnavailable
+			errMsg = "Hydra service is unavailable. Please check if Ory Hydra is running."
 		}
-		return errorJSON(c, fiber.StatusInternalServerError, errMsg)
-	}
-
-	items := make([]clientSummary, 0, len(clients))
-	for _, client := range clients {
-		if isHiddenSystemClient(client) {
-			continue
-		}
-
-		summary := h.mapClientSummary(client)
-
-		// 1. [Security] Filter out 'private' clients if user is not an AppManager
-		canViewByPermit := h.canViewClientByPermit(c, profile, summary)
-
-		if summary.Type == "private" && !isAppManager && !canViewByPermit {
-			continue
-		}
-
-		// 2. [Isolation] If not SuperAdmin, only show clients belonging to the same tenant
-		if !isSuperAdmin {
-			clientTenantID, _ := summary.Metadata["tenant_id"].(string)
-			if clientTenantID != userTenantID && !canViewByPermit {
-				continue
-			}
-		}
-
-		// 3. [Role Scope] RP Admin can only access managed RP IDs unless explicit Keto permit exists
-		if role == domain.RoleRPAdmin && len(allowedClientIDs) > 0 {
-			if _, ok := allowedClientIDs[summary.ID]; !ok {
-				if !canViewByPermit {
-					continue
-				}
-			}
-		}
-
-		if !isSuperAdmin && !canAccessClientByLegacyScope(profile, summary) && !canViewByPermit {
-			continue
-		}
-
-		items = append(items, h.redactClientSecretUnlessAllowed(c, profile, summary))
+		return errorJSON(c, status, errMsg)
 	}

 	return c.JSON(clientListResponse{
@@ -2547,59 +2585,42 @@ func (h *DevHandler) ListAuditLogs(c *fiber.Ctx) error {

 func (h *DevHandler) GetStats(c *fiber.Ctx) error {
 	h.injectTenantContextFromHeader(c)
-
-	// [Security] Check permission
-	allowed, err := h.checkAppManagerPermission(c)
-	if err != nil {
-		return errorJSON(c, fiber.StatusInternalServerError, "permission check error")
+	profile := h.getCurrentProfile(c)
+	if profile == nil {
+		return errorJSON(c, fiber.StatusUnauthorized, "unauthorized: authentication required")
 	}
-	if !allowed {
+	role := normalizeUserRole(profile.Role)
+	if !isDevConsoleViewerRole(role) {
 		return errorJSON(c, fiber.StatusForbidden, "forbidden")
 	}

-	userTenantID := ""
-	isSuperAdmin := false
-	if profile, ok := c.Locals("user_profile").(*domain.UserProfileResponse); ok && profile != nil {
-		isSuperAdmin = normalizeUserRole(profile.Role) == domain.RoleSuperAdmin
-		if profile.TenantID != nil {
-			userTenantID = *profile.TenantID
-		}
+	visibleClients, err := h.listVisibleClientSummaries(c, profile, 500, 0)
+	if err != nil {
+		return errorJSON(c, fiber.StatusInternalServerError, "failed to resolve visible clients")
 	}

-	// 1. Total Clients (Tenant Scoped)
-	// Hydra doesn't support tenant filtering natively, so we list and filter.
-	// For stats, we might want to fetch a larger batch or use a cached count.
-	clients, err := h.Hydra.ListClients(c.Context(), 500, 0)
-	var totalClients int64
-	if err == nil {
-		for _, client := range clients {
-			if isHiddenSystemClient(client) {
-				continue
-			}
-			if isSuperAdmin {
-				totalClients++
-				continue
-			}
-			if client.Metadata != nil {
-				if tid, ok := client.Metadata["tenant_id"].(string); ok && tid == userTenantID {
-					totalClients++
-				}
-			}
-		}
-	}
+	userTenantID := tenantIDFromProfile(profile)
+	totalClients := int64(len(visibleClients))
+	visibleClientIDs := clientIDSetFromSummaries(visibleClients)

 	// 2. Auth Failures (24h)
 	var authFailures int64
-	if h.AuditRepo != nil {
-		since := time.Now().Add(-24 * time.Hour)
-		authFailures, _ = h.AuditRepo.CountFailuresSince(c.Context(), since, userTenantID)
-	}
-
-	// 3. Active Sessions (1h)
 	var activeSessions int64
 	if h.AuditRepo != nil {
-		since := time.Now().Add(-1 * time.Hour)
-		activeSessions, _ = h.AuditRepo.CountActiveSessionsSince(c.Context(), since, userTenantID)
+		failureSince := time.Now().Add(-24 * time.Hour)
+		sessionSince := time.Now().Add(-1 * time.Hour)
+		if shouldScopeDashboardToExplicitClients(role) {
+			authFailures, activeSessions, _ = h.countScopedDashboardAuditMetrics(
+				c,
+				userTenantID,
+				visibleClientIDs,
+				failureSince,
+				sessionSince,
+			)
+		} else {
+			authFailures, _ = h.AuditRepo.CountFailuresSince(c.Context(), failureSince, userTenantID)
+			activeSessions, _ = h.AuditRepo.CountActiveSessionsSince(c.Context(), sessionSince, userTenantID)
+		}
 	}

 	return c.JSON(devStatsResponse{
@@ -2609,6 +2630,75 @@ func (h *DevHandler) GetStats(c *fiber.Ctx) error {
 	})
 }

+func (h *DevHandler) GetRPUsageDaily(c *fiber.Ctx) error {
+	h.injectTenantContextFromHeader(c)
+
+	profile := h.getCurrentProfile(c)
+	if profile == nil {
+		return errorJSON(c, fiber.StatusUnauthorized, "unauthorized: authentication required")
+	}
+	role := normalizeUserRole(profile.Role)
+	if !isDevConsoleViewerRole(role) {
+		return errorJSON(c, fiber.StatusForbidden, "forbidden")
+	}
+	if h == nil || h.RPUsageQueries == nil {
+		return errorJSON(c, fiber.StatusServiceUnavailable, "rp usage query service unavailable")
+	}
+
+	days := 14
+	if raw := c.Query("days"); raw != "" {
+		if parsed, err := strconv.Atoi(raw); err == nil {
+			days = parsed
+		}
+	}
+	period := normalizeRPUsagePeriod(c.Query("period"))
+
+	visibleClients, err := h.listVisibleClientSummaries(c, profile, 500, 0)
+	if err != nil {
+		return errorJSON(c, fiber.StatusInternalServerError, "failed to resolve visible clients")
+	}
+
+	allowedClientIDs := clientIDSetFromSummaries(visibleClients)
+	if role != domain.RoleSuperAdmin && len(allowedClientIDs) == 0 {
+		return c.JSON(devRPUsageDailyResponse{
+			Items:  []domain.RPUsageDailyMetric{},
+			Days:   days,
+			Period: period,
+		})
+	}
+
+	tenantID := ""
+	if role != domain.RoleSuperAdmin {
+		tenantID = tenantIDFromProfile(profile)
+	}
+
+	items, err := h.RPUsageQueries.FindRPUsage(c.Context(), domain.RPUsageQuery{
+		Days:     days,
+		Period:   period,
+		TenantID: tenantID,
+	})
+	if err != nil {
+		return errorJSON(c, fiber.StatusInternalServerError, err.Error())
+	}
+
+	filtered := make([]domain.RPUsageDailyMetric, 0, len(items))
+	for _, item := range items {
+		if role != domain.RoleSuperAdmin {
+			if _, ok := allowedClientIDs[strings.TrimSpace(item.ClientID)]; !ok {
+				continue
+			}
+		}
+		filtered = append(filtered, item)
+	}
+
+	return c.JSON(devRPUsageDailyResponse{
+		Items:    filtered,
+		Days:     days,
+		Period:   period,
+		TenantID: tenantID,
+	})
+}
+
 func generateRandomSecret(length int) (string, error) {
 	bytes := make([]byte, length)
 	if _, err := rand.Read(bytes); err != nil {
@@ -3262,6 +3352,74 @@ func (h *DevHandler) resolveDevTenantScope(c *fiber.Ctx) string {
 	return ""
 }

+func (h *DevHandler) countScopedDashboardAuditMetrics(
+	c *fiber.Ctx,
+	tenantID string,
+	allowedClientIDs map[string]struct{},
+	failureSince, sessionSince time.Time,
+) (int64, int64, error) {
+	if h.AuditRepo == nil || len(allowedClientIDs) == 0 {
+		return 0, 0, nil
+	}
+
+	oldestSince := failureSince
+	if sessionSince.Before(oldestSince) {
+		oldestSince = sessionSince
+	}
+
+	var failureCount int64
+	activeSessions := make(map[string]struct{})
+	var cursor *domain.AuditCursor
+
+	const pageSize = 200
+	const maxScan = 5000
+	scanned := 0
+
+	for scanned < maxScan {
+		page, err := h.AuditRepo.FindPage(c.Context(), pageSize, cursor, tenantID)
+		if err != nil {
+			return 0, 0, err
+		}
+		if len(page) == 0 {
+			break
+		}
+
+		stop := false
+		for _, logItem := range page {
+			scanned++
+			if logItem.Timestamp.Before(oldestSince) {
+				stop = true
+				break
+			}
+
+			details, _ := utils.ParseAuditDetails(logItem.Details)
+			clientID := strings.TrimSpace(resolveDevAuditClientID(logItem, details))
+			if _, ok := allowedClientIDs[clientID]; !ok {
+				continue
+			}
+
+			if strings.EqualFold(logItem.Status, "failure") && !logItem.Timestamp.Before(failureSince) {
+				failureCount++
+			}
+			if strings.EqualFold(logItem.Status, "success") && !logItem.Timestamp.Before(sessionSince) {
+				sessionID := strings.TrimSpace(logItem.SessionID)
+				if sessionID != "" {
+					activeSessions[sessionID] = struct{}{}
+				}
+			}
+		}
+
+		if stop || len(page) < pageSize {
+			break
+		}
+
+		last := page[len(page)-1]
+		cursor = &domain.AuditCursor{Timestamp: last.Timestamp, EventID: last.EventID}
+	}
+
+	return failureCount, int64(len(activeSessions)), nil
+}
+
 // ListMyTenants returns the list of tenants the current user manages or belongs to.
 func (h *DevHandler) ListMyTenants(c *fiber.Ctx) error {
 	profile, err := h.Auth.GetEnrichedProfile(c)
--- a/backend/internal/handler/dev_handler_test.go
+++ b/backend/internal/handler/dev_handler_test.go
@@ -942,7 +942,6 @@ func TestGetClient_RPAdminAllowedByKetoViewPermission(t *testing.T) {
 	})

 	mockKeto := new(devMockKetoService)
-	mockKeto.On("CheckPermission", mock.Anything, "User:rp-1", "Tenant", "tenant-b", "view_dev_console").Return(false, nil)
 	mockKeto.On("CheckPermission", mock.Anything, "User:rp-1", "RelyingParty", "client-1", "view").Return(true, nil)

 	h := &DevHandler{
@@ -1368,6 +1367,22 @@ func TestGetStats_Success(t *testing.T) {
 	}

 	mockKeto := new(devMockKetoService)
+	mockKeto.On(
+		"CheckPermission",
+		mock.Anything,
+		"User:u1",
+		"RelyingParty",
+		mock.Anything,
+		"view",
+	).Return(false, nil).Maybe()
+	mockKeto.On(
+		"ListRelations",
+		mock.Anything,
+		"RelyingParty",
+		mock.Anything,
+		mock.Anything,
+		mock.Anything,
+	).Return([]service.RelationTuple{}, nil).Maybe()

 	h := &DevHandler{
 		Hydra: &service.HydraAdminService{
@@ -1400,6 +1415,164 @@ func TestGetStats_Success(t *testing.T) {
 	mockKeto.AssertNotCalled(t, "CheckPermission", mock.Anything, mock.Anything, "System", "global", "manage_all")
 }

+func TestGetStats_UserScopesAuditMetricsToVisibleClients(t *testing.T) {
+	now := time.Now()
+	transport := roundTripFunc(func(r *http.Request) (*http.Response, error) {
+		if r.URL.Path == "/clients" {
+			return httpJSONAny(r, http.StatusOK, []map[string]interface{}{
+				{"client_id": "client-owned", "metadata": map[string]interface{}{"tenant_id": "tenant-a"}},
+				{"client_id": "client-other", "metadata": map[string]interface{}{"tenant_id": "tenant-a"}},
+			}), nil
+		}
+		return httpJSONAny(r, http.StatusNotFound, nil), nil
+	})
+
+	auditRepo := &mockAuditRepo{
+		logs: []domain.AuditLog{
+			{
+				EventID:   "evt-1",
+				Timestamp: now.Add(-15 * time.Minute),
+				SessionID: "sess-owned",
+				Status:    "success",
+				EventType: "GET /api/v1/dev/clients/client-owned",
+				Details:   `{"client_id":"client-owned","tenant_id":"tenant-a"}`,
+			},
+			{
+				EventID:   "evt-2",
+				Timestamp: now.Add(-20 * time.Minute),
+				Status:    "failure",
+				EventType: "GET /api/v1/dev/clients/client-owned",
+				Details:   `{"client_id":"client-owned","tenant_id":"tenant-a"}`,
+			},
+			{
+				EventID:   "evt-3",
+				Timestamp: now.Add(-10 * time.Minute),
+				SessionID: "sess-other",
+				Status:    "success",
+				EventType: "GET /api/v1/dev/clients/client-other",
+				Details:   `{"client_id":"client-other","tenant_id":"tenant-a"}`,
+			},
+			{
+				EventID:   "evt-4",
+				Timestamp: now.Add(-30 * time.Minute),
+				Status:    "failure",
+				EventType: "GET /api/v1/dev/clients/client-other",
+				Details:   `{"client_id":"client-other","tenant_id":"tenant-a"}`,
+			},
+		},
+	}
+
+	mockKeto := new(devMockKetoService)
+	mockKeto.On("CheckPermission", mock.Anything, "User:user-1", "RelyingParty", "client-owned", "view").Return(true, nil)
+	mockKeto.On("CheckPermission", mock.Anything, "User:user-1", "RelyingParty", "client-other", "view").Return(false, nil)
+	mockKeto.On(
+		"ListRelations",
+		mock.Anything,
+		"RelyingParty",
+		mock.Anything,
+		mock.Anything,
+		mock.Anything,
+	).Return([]service.RelationTuple{}, nil).Maybe()
+
+	h := &DevHandler{
+		Hydra: &service.HydraAdminService{
+			AdminURL:   "http://hydra.test",
+			HTTPClient: &http.Client{Transport: transport},
+		},
+		AuditRepo: auditRepo,
+		Keto:      mockKeto,
+	}
+
+	app := fiber.New()
+	tenantID := "tenant-a"
+	app.Use(func(c *fiber.Ctx) error {
+		c.Locals("user_profile", &domain.UserProfileResponse{
+			ID:       "user-1",
+			Role:     domain.RoleUser,
+			TenantID: &tenantID,
+		})
+		return c.Next()
+	})
+	app.Get("/api/v1/dev/stats", h.GetStats)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/dev/stats", nil)
+	resp, _ := app.Test(req, -1)
+
+	assert.Equal(t, http.StatusOK, resp.StatusCode)
+	var res devStatsResponse
+	_ = json.NewDecoder(resp.Body).Decode(&res)
+
+	assert.Equal(t, int64(1), res.TotalClients)
+	assert.Equal(t, int64(1), res.AuthFailures)
+	assert.Equal(t, int64(1), res.ActiveSessions)
+	mockKeto.AssertExpectations(t)
+}
+
+func TestGetRPUsageDaily_UserScopesItemsToVisibleClients(t *testing.T) {
+	transport := roundTripFunc(func(r *http.Request) (*http.Response, error) {
+		if r.URL.Path == "/clients" {
+			return httpJSONAny(r, http.StatusOK, []map[string]interface{}{
+				{"client_id": "client-owned", "client_name": "Owned App", "metadata": map[string]interface{}{"tenant_id": "tenant-a"}},
+				{"client_id": "client-other", "client_name": "Other App", "metadata": map[string]interface{}{"tenant_id": "tenant-a"}},
+			}), nil
+		}
+		return httpJSONAny(r, http.StatusNotFound, nil), nil
+	})
+
+	mockKeto := new(devMockKetoService)
+	mockKeto.On("CheckPermission", mock.Anything, "User:user-1", "RelyingParty", "client-owned", "view").Return(true, nil)
+	mockKeto.On("CheckPermission", mock.Anything, "User:user-1", "RelyingParty", "client-other", "view").Return(false, nil)
+	mockKeto.On(
+		"ListRelations",
+		mock.Anything,
+		"RelyingParty",
+		mock.Anything,
+		mock.Anything,
+		mock.Anything,
+	).Return([]service.RelationTuple{}, nil).Maybe()
+
+	usageRepo := &fakeRPUsageQueryRepo{
+		items: []domain.RPUsageDailyMetric{
+			{Date: "2026-05-12", TenantID: "tenant-a", ClientID: "client-owned", ClientName: "Owned App", LoginRequests: 3},
+			{Date: "2026-05-12", TenantID: "tenant-a", ClientID: "client-other", ClientName: "Other App", LoginRequests: 9},
+		},
+	}
+
+	h := &DevHandler{
+		Hydra: &service.HydraAdminService{
+			AdminURL:   "http://hydra.test",
+			HTTPClient: &http.Client{Transport: transport},
+		},
+		Keto:           mockKeto,
+		RPUsageQueries: usageRepo,
+	}
+
+	app := fiber.New()
+	tenantID := "tenant-a"
+	app.Use(func(c *fiber.Ctx) error {
+		c.Locals("user_profile", &domain.UserProfileResponse{
+			ID:       "user-1",
+			Role:     domain.RoleUser,
+			TenantID: &tenantID,
+		})
+		return c.Next()
+	})
+	app.Get("/api/v1/dev/rp-usage/daily", h.GetRPUsageDaily)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/dev/rp-usage/daily?days=14&period=day", nil)
+	resp, _ := app.Test(req, -1)
+
+	assert.Equal(t, http.StatusOK, resp.StatusCode)
+	var res devRPUsageDailyResponse
+	_ = json.NewDecoder(resp.Body).Decode(&res)
+
+	if assert.Len(t, res.Items, 1) {
+		assert.Equal(t, "client-owned", res.Items[0].ClientID)
+	}
+	assert.Equal(t, "tenant-a", usageRepo.query.TenantID)
+	mockKeto.AssertExpectations(t)
+}
+
 func TestDevHandler_NoAuditNoAction(t *testing.T) {
 	h := &DevHandler{
 		Hydra:     &service.HydraAdminService{AdminURL: "http://hydra.test"},
--- a/common/.gitkeep
+++ b/common/.gitkeep
@@ -0,0 +1 @@
+
--- a/common/core/auth/index.ts
+++ b/common/core/auth/index.ts
@@ -0,0 +1,63 @@
+export const DEFAULT_OIDC_SCOPE = "openid offline_access profile email";
+export const DEFAULT_OIDC_REDIRECT_PATH = "/auth/callback";
+
+export type CommonOidcConfigOptions<TUserStore = unknown> = {
+  authority: string;
+  clientId: string;
+  origin?: string;
+  redirectPath?: string;
+  scope?: string;
+  automaticSilentRenew?: boolean;
+  userStore: TUserStore;
+};
+
+type CommonOidcRuntimeConfig<TUserStore> = {
+  authority: string;
+  client_id: string;
+  redirect_uri: string;
+  response_type: "code";
+  scope: string;
+  post_logout_redirect_uri: string;
+  popup_redirect_uri: string;
+  userStore: TUserStore;
+  automaticSilentRenew: boolean;
+};
+
+export function buildCommonOidcRuntimeConfig<TUserStore>({
+  authority,
+  clientId,
+  origin = window.location.origin,
+  redirectPath = DEFAULT_OIDC_REDIRECT_PATH,
+  scope = DEFAULT_OIDC_SCOPE,
+  automaticSilentRenew = false,
+  userStore,
+}: CommonOidcConfigOptions<TUserStore>): CommonOidcRuntimeConfig<TUserStore> {
+  const callbackUrl = `${origin}${redirectPath}`;
+
+  return {
+    authority,
+    client_id: clientId,
+    redirect_uri: callbackUrl,
+    response_type: "code",
+    scope,
+    post_logout_redirect_uri: origin,
+    popup_redirect_uri: callbackUrl,
+    userStore,
+    automaticSilentRenew,
+  };
+}
+
+export function buildCommonUserManagerSettings<
+  TConfig extends {
+    authority?: string;
+    client_id?: string;
+    redirect_uri?: string;
+  },
+>(config: TConfig) {
+  return {
+    ...config,
+    authority: config.authority || "",
+    client_id: config.client_id || "",
+    redirect_uri: config.redirect_uri || "",
+  };
+}
--- a/common/core/i18n/index.ts
+++ b/common/core/i18n/index.ts
@@ -0,0 +1,11 @@
+export { createTomlTranslator } from "./loader";
+export {
+  DEFAULT_LOCALE,
+  LOCALE_STORAGE_KEY,
+  SUPPORTED_LOCALES,
+  type Locale,
+  type TomlObject,
+  type TomlValue,
+  type TranslatorInput,
+  type TranslatorOptions,
+} from "./types";
--- a/common/core/i18n/loader.ts
+++ b/common/core/i18n/loader.ts
@@ -0,0 +1,176 @@
+import {
+  DEFAULT_LOCALE,
+  LOCALE_STORAGE_KEY,
+  SUPPORTED_LOCALES,
+  type Locale,
+  type TomlObject,
+  type TomlValue,
+  type TranslatorInput,
+  type TranslatorOptions,
+} from "./types";
+
+function mergeTomlObjects(base: TomlObject, override: TomlObject): TomlObject {
+  const result: TomlObject = { ...base };
+
+  for (const [key, value] of Object.entries(override)) {
+    const currentValue = result[key];
+    if (
+      typeof currentValue === "object" &&
+      currentValue !== null &&
+      typeof value === "object" &&
+      value !== null
+    ) {
+      result[key] = mergeTomlObjects(currentValue as TomlObject, value);
+      continue;
+    }
+    result[key] = value;
+  }
+
+  return result;
+}
+
+function isSupportedLocale(value: string): value is Locale {
+  return (SUPPORTED_LOCALES as readonly string[]).includes(value);
+}
+
+function parseToml(raw: string): TomlObject {
+  const lines = raw.split(/\r?\n/);
+  const root: TomlObject = {};
+  let currentPath: string[] = [];
+
+  for (const rawLine of lines) {
+    const line = rawLine.trim();
+    if (!line || line.startsWith("#")) {
+      continue;
+    }
+
+    if (line.startsWith("[") && line.endsWith("]")) {
+      const sectionName = line.slice(1, -1).trim();
+      currentPath = sectionName
+        ? sectionName
+            .split(".")
+            .map((part) => part.trim())
+            .filter(Boolean)
+        : [];
+      continue;
+    }
+
+    const eqIndex = line.indexOf("=");
+    if (eqIndex === -1) {
+      continue;
+    }
+
+    const key = line.slice(0, eqIndex).trim();
+    const valueRaw = line.slice(eqIndex + 1).trim();
+    if (!key) {
+      continue;
+    }
+
+    let value = valueRaw;
+    if (
+      (value.startsWith('"') && value.endsWith('"')) ||
+      (value.startsWith("'") && value.endsWith("'"))
+    ) {
+      value = value.slice(1, -1);
+    }
+
+    let cursor: TomlObject = root;
+    for (const section of currentPath) {
+      if (!cursor[section] || typeof cursor[section] === "string") {
+        cursor[section] = {};
+      }
+      cursor = cursor[section] as TomlObject;
+    }
+
+    cursor[key] = value;
+  }
+
+  return root;
+}
+
+function getValue(target: TomlObject, key: string): string | undefined {
+  const parts = key.split(".");
+  let cursor: TomlValue = target;
+  for (const part of parts) {
+    if (typeof cursor !== "object" || cursor === null) {
+      return undefined;
+    }
+    cursor = (cursor as TomlObject)[part];
+    if (cursor === undefined) {
+      return undefined;
+    }
+  }
+  return typeof cursor === "string" ? cursor : undefined;
+}
+
+function detectLocale(): Locale {
+  if (typeof window === "undefined") {
+    return DEFAULT_LOCALE;
+  }
+
+  const stored = window.localStorage.getItem(LOCALE_STORAGE_KEY);
+  if (stored && isSupportedLocale(stored)) {
+    return stored;
+  }
+
+  const pathLocale = window.location.pathname.split("/")[1];
+  if (pathLocale && isSupportedLocale(pathLocale)) {
+    return pathLocale;
+  }
+
+  const browserLang = window.navigator.language.toLowerCase();
+  if (browserLang.startsWith("ko")) {
+    return "ko";
+  }
+
+  return DEFAULT_LOCALE;
+}
+
+function formatTemplate(
+  template: string,
+  vars?: Record<string, string | number>,
+  options?: TranslatorOptions,
+): string {
+  const normalizedTemplate = options?.normalizeEscapedNewlines
+    ? template.replace(/\\n/g, "\n")
+    : template;
+
+  if (!vars) {
+    return normalizedTemplate;
+  }
+
+  return normalizedTemplate.replace(/\{\{\s*(\w+)\s*\}\}/g, (match, key) => {
+    const value = vars[key];
+    if (value === undefined || value === null) {
+      return match;
+    }
+    return String(value);
+  });
+}
+
+export function createTomlTranslator(
+  input: TranslatorInput,
+  options?: TranslatorOptions,
+) {
+  const translations: Record<Locale, TomlObject> = {
+    ko: input.ko
+      .map((raw) => parseToml(raw))
+      .reduce<TomlObject>((merged, current) => mergeTomlObjects(merged, current), {}),
+    en: input.en
+      .map((raw) => parseToml(raw))
+      .reduce<TomlObject>((merged, current) => mergeTomlObjects(merged, current), {}),
+  };
+
+  return function t(
+    key: string,
+    fallback?: string,
+    vars?: Record<string, string | number>,
+  ): string {
+    const locale = detectLocale();
+    const value = getValue(translations[locale], key);
+    if (value && value.length > 0) {
+      return formatTemplate(value, vars, options);
+    }
+    return formatTemplate(fallback ?? key, vars, options);
+  };
+}
--- a/common/core/i18n/types.ts
+++ b/common/core/i18n/types.ts
@@ -0,0 +1,20 @@
+export const LOCALE_STORAGE_KEY = "locale";
+export const DEFAULT_LOCALE = "ko";
+export const SUPPORTED_LOCALES = ["ko", "en"] as const;
+
+export type Locale = (typeof SUPPORTED_LOCALES)[number];
+
+export type TomlValue = string | TomlObject;
+
+export interface TomlObject {
+  [key: string]: TomlValue;
+}
+
+export interface TranslatorOptions {
+  normalizeEscapedNewlines?: boolean;
+}
+
+export interface TranslatorInput {
+  en: string[];
+  ko: string[];
+}
--- a/common/core/query/queryClient.ts
+++ b/common/core/query/queryClient.ts
@@ -0,0 +1,7 @@
+export const queryClientDefaultOptions = {
+  queries: {
+    staleTime: 30_000,
+    refetchOnWindowFocus: false,
+    retry: 1,
+  },
+} as const;
--- a/common/core/session/index.ts
+++ b/common/core/session/index.ts
@@ -0,0 +1,65 @@
+export const DEFAULT_SESSION_RENEW_THRESHOLD_MS = 10 * 60 * 1000;
+export const DEFAULT_SESSION_RENEW_THROTTLE_MS = 30 * 1000;
+
+export type SessionRenewDecisionParams = {
+  expiresAtSec?: number | null;
+  nowMs: number;
+  isEnabled: boolean;
+  isAuthenticated: boolean;
+  isLoading: boolean;
+  isRenewInFlight: boolean;
+  lastAttemptAtMs: number;
+  thresholdMs?: number;
+  throttleMs?: number;
+};
+
+function hasRenewPreconditions({
+  isAuthenticated,
+  isLoading,
+  isRenewInFlight,
+}: SessionRenewDecisionParams) {
+  return isAuthenticated && !isLoading && !isRenewInFlight;
+}
+
+function isRenewWindowOpen({
+  expiresAtSec,
+  nowMs,
+  lastAttemptAtMs,
+  thresholdMs = DEFAULT_SESSION_RENEW_THRESHOLD_MS,
+  throttleMs = DEFAULT_SESSION_RENEW_THROTTLE_MS,
+}: SessionRenewDecisionParams) {
+  if (typeof expiresAtSec !== "number") {
+    return false;
+  }
+
+  const remainingMs = expiresAtSec * 1000 - nowMs;
+  if (remainingMs <= 0 || remainingMs > thresholdMs) {
+    return false;
+  }
+
+  if (nowMs - lastAttemptAtMs < throttleMs) {
+    return false;
+  }
+
+  return true;
+}
+
+export function shouldAttemptSlidingSessionRenew(
+  params: SessionRenewDecisionParams,
+) {
+  if (!params.isEnabled || !hasRenewPreconditions(params)) {
+    return false;
+  }
+
+  return isRenewWindowOpen(params);
+}
+
+export function shouldAttemptUnlimitedSessionRenew(
+  params: SessionRenewDecisionParams,
+) {
+  if (params.isEnabled || !hasRenewPreconditions(params)) {
+    return false;
+  }
+
+  return isRenewWindowOpen(params);
+}
--- a/common/core/utils/index.ts
+++ b/common/core/utils/index.ts
@@ -0,0 +1,8 @@
+export function mergeClassNames(
+  mergeFn: (...classNames: string[]) => string,
+  classNames: string[],
+) {
+  return mergeFn(...classNames);
+}
+
+export * from "./sort";
--- a/common/core/utils/sort.ts
+++ b/common/core/utils/sort.ts
@@ -0,0 +1,97 @@
+export type SortDirection = "asc" | "desc";
+
+export type SortConfig<Key extends string = string> = {
+  key: Key;
+  direction: SortDirection;
+};
+
+export type SortableValue = string | number | boolean | Date | null | undefined;
+
+export type SortResolver<T> = (item: T) => SortableValue;
+
+export type SortResolverMap<T, Key extends string = string> = Partial<
+  Record<Key, SortResolver<T>>
+>;
+
+function normalizeSortableValue(value: SortableValue) {
+  if (value instanceof Date) {
+    return value.getTime();
+  }
+  if (typeof value === "string") {
+    return value.toLocaleLowerCase();
+  }
+  if (typeof value === "boolean") {
+    return value ? 1 : 0;
+  }
+  return value;
+}
+
+export function compareNullableValues(
+  left: SortableValue,
+  right: SortableValue,
+  direction: SortDirection,
+) {
+  if (left === right) {
+    return 0;
+  }
+
+  if (left === null || left === undefined) {
+    return 1;
+  }
+
+  if (right === null || right === undefined) {
+    return -1;
+  }
+
+  const normalizedLeft = normalizeSortableValue(left);
+  const normalizedRight = normalizeSortableValue(right);
+
+  if (normalizedLeft === normalizedRight) {
+    return 0;
+  }
+
+  if (normalizedLeft === null || normalizedLeft === undefined) {
+    return 1;
+  }
+
+  if (normalizedRight === null || normalizedRight === undefined) {
+    return -1;
+  }
+
+  const comparison = normalizedLeft < normalizedRight ? -1 : 1;
+  return direction === "asc" ? comparison : -comparison;
+}
+
+export function toggleSort<Key extends string>(
+  current: SortConfig<Key> | null,
+  key: Key,
+): SortConfig<Key> {
+  if (current?.key === key && current.direction === "asc") {
+    return { key, direction: "desc" };
+  }
+
+  return { key, direction: "asc" };
+}
+
+export function sortItems<T, Key extends string = string>(
+  items: T[],
+  sortConfig: SortConfig<Key> | null,
+  resolverMap: SortResolverMap<T, Key> = {},
+) {
+  if (!sortConfig) {
+    return [...items];
+  }
+
+  const resolveValue =
+    resolverMap[sortConfig.key] ??
+    ((item: T) =>
+      (item as Record<string, SortableValue>)[sortConfig.key] ?? null);
+
+  return [...items].sort((left, right) =>
+    compareNullableValues(
+      resolveValue(left),
+      resolveValue(right),
+      sortConfig.direction,
+    ),
+  );
+}
--- a/common/locales/en.toml
+++ b/common/locales/en.toml
@@ -0,0 +1,98 @@
+[msg.common]
+copied = "Copied."
+error = "Error"
+forbidden = "Access denied."
+loading = "Loading..."
+no_results = "No results found."
+no_description = "No Description."
+parsing = "Parsing data..."
+requesting = "Requesting..."
+saving = "Saving..."
+unknown_error = "unknown error"
+
+[ui.common]
+actions = "Actions"
+add = "Add"
+all = "All"
+admin_only = "Admin Only"
+approve = "Approve"
+assign = "Assign"
+back = "Back"
+back_to_login = "Back to login"
+cancel = "Cancel"
+change_file = "Change File"
+clear_search = "Clear Search"
+close = "Close"
+collapse = "Collapse"
+confirm = "Confirm"
+continue = "Continue"
+copy = "Copy"
+create = "Create"
+delete = "Delete"
+detail = "Detail"
+details = "Details"
+disabled = "Disabled"
+edit = "Edit"
+enabled = "Enabled"
+export = "Export"
+export_with_ids = "Include UUID"
+export_without_ids = "Export without UUID"
+fail = "Fail"
+go_home = "Go Home"
+info = "Info"
+view = "View"
+hyphen = "-"
+loading = "Loading..."
+manage = "Manage"
+move = "Move"
+move_org = "Move to another organization"
+na = "N/A"
+never = "Never"
+next = "Next"
+none = "None"
+page_of = "Page {{page}} of {{total}}"
+prev = "Prev"
+previous = "Previous"
+qr = "QR"
+reject = "Reject"
+rejected = "Rejected"
+reset = "Reset"
+read_only = "Read Only"
+refresh = "Refresh"
+remove = "Remove"
+remove_org = "Remove from organization"
+resend = "Resend"
+retry = "Retry"
+row = "Row"
+save = "Save"
+search = "Search"
+search_group = "Search groups..."
+select = "Select"
+select_file = "Select File"
+select_placeholder = "Select Placeholder"
+show_more = "Show More"
+language = "Language"
+language_ko = "Korean"
+language_en = "English"
+submit = "Submit"
+submitting = "Submitting..."
+success = "Success"
+theme_dark = "Dark"
+theme_light = "Light"
+theme_toggle = "Theme Toggle"
+unassigned = "Unassigned"
+unknown = "Unknown"
+
+[ui.common.badge]
+admin_only = "Admin only"
+command_only = "Command only"
+system = "System"
+
+[ui.common.status]
+active = "Active"
+blocked = "Blocked"
+failure = "Failure"
+inactive = "Inactive"
+ok = "Ok"
+pending = "Pending"
+success = "Success"
--- a/common/locales/ko.toml
+++ b/common/locales/ko.toml
@@ -0,0 +1,98 @@
+[msg.common]
+copied = "복사되었습니다."
+error = "오류가 발생했습니다."
+forbidden = "접근 권한이 없습니다."
+loading = "로딩 중..."
+no_results = "검색 결과가 없습니다."
+no_description = "설명이 없습니다."
+parsing = "데이터 파싱 중..."
+requesting = "요청 중..."
+saving = "저장 중..."
+unknown_error = "알 수 없는 오류"
+
+[ui.common]
+actions = "액션"
+add = "추가"
+all = "전체"
+admin_only = "관리자 전용"
+approve = "승인"
+assign = "할당"
+back = "돌아가기"
+back_to_login = "로그인으로 돌아가기"
+cancel = "취소"
+change_file = "파일 변경"
+clear_search = "검색 초기화"
+close = "닫기"
+collapse = "접기"
+confirm = "확인"
+continue = "계속 진행"
+copy = "복사"
+create = "생성"
+delete = "삭제"
+detail = "상세보기"
+details = "상세정보"
+disabled = "사용 안 함"
+edit = "편집"
+enabled = "사용"
+export = "내보내기"
+export_with_ids = "UUID 포함"
+export_without_ids = "UUID 제외 내보내기"
+fail = "실패"
+go_home = "홈으로"
+info = "상세 안내"
+view = "보기"
+hyphen = "-"
+loading = "로딩 중..."
+manage = "관리"
+move = "이동"
+move_org = "타 조직으로 이동"
+na = "N/A"
+never = "Never"
+next = "다음"
+none = "없음"
+page_of = "Page {{page}} of {{total}}"
+prev = "이전"
+previous = "이전"
+qr = "QR"
+reject = "반려"
+rejected = "반려됨"
+reset = "초기화"
+read_only = "읽기 전용"
+refresh = "새로고침"
+remove = "제외"
+remove_org = "조직에서 제외"
+resend = "재발송"
+retry = "다시 시도"
+row = "행"
+save = "저장"
+search = "검색"
+search_group = "그룹 검색..."
+select = "선택"
+select_file = "파일 선택"
+select_placeholder = "선택하세요"
+show_more = "+ 더보기"
+language = "언어"
+language_ko = "한국어"
+language_en = "English"
+submit = "신청하기"
+submitting = "제출 중..."
+success = "성공"
+theme_dark = "Dark"
+theme_light = "Light"
+theme_toggle = "테마 전환"
+unassigned = "미배정"
+unknown = "Unknown"
+
+[ui.common.badge]
+admin_only = "Admin only"
+command_only = "Command only"
+system = "System"
+
+[ui.common.status]
+active = "활성"
+blocked = "차단됨"
+failure = "실패"
+inactive = "비활성"
+ok = "정상"
+pending = "준비 중"
+success = "성공"
--- a/common/locales/template.toml
+++ b/common/locales/template.toml
@@ -0,0 +1,98 @@
+[msg.common]
+copied = ""
+error = ""
+forbidden = ""
+loading = ""
+no_results = ""
+no_description = ""
+parsing = ""
+requesting = ""
+saving = ""
+unknown_error = ""
+
+[ui.common]
+actions = ""
+add = ""
+all = ""
+admin_only = ""
+approve = ""
+assign = ""
+back = ""
+back_to_login = ""
+cancel = ""
+change_file = ""
+clear_search = ""
+close = ""
+collapse = ""
+confirm = ""
+continue = ""
+copy = ""
+create = ""
+delete = ""
+detail = ""
+details = ""
+disabled = ""
+edit = ""
+enabled = ""
+export = ""
+export_with_ids = ""
+export_without_ids = ""
+fail = ""
+go_home = ""
+info = ""
+view = ""
+hyphen = ""
+loading = ""
+manage = ""
+move = ""
+move_org = ""
+na = ""
+never = ""
+next = ""
+none = ""
+page_of = ""
+prev = ""
+previous = ""
+qr = ""
+reject = ""
+rejected = ""
+reset = ""
+read_only = ""
+refresh = ""
+remove = ""
+remove_org = ""
+resend = ""
+retry = ""
+row = ""
+save = ""
+search = ""
+search_group = ""
+select = ""
+select_file = ""
+select_placeholder = ""
+show_more = ""
+language = ""
+language_ko = ""
+language_en = ""
+submit = ""
+submitting = ""
+success = ""
+theme_dark = ""
+theme_light = ""
+theme_toggle = ""
+unassigned = ""
+unknown = ""
+
+[ui.common.badge]
+admin_only = ""
+command_only = ""
+system = ""
+
+[ui.common.status]
+active = ""
+blocked = ""
+failure = ""
+inactive = ""
+ok = ""
+pending = ""
+success = ""
--- a/common/shell/index.ts
+++ b/common/shell/index.ts
@@ -0,0 +1,170 @@
+export type ShellTheme = "light" | "dark";
+
+export type ShellTranslator = (
+  key: string,
+  fallback: string,
+  vars?: Record<string, string | number>,
+) => string;
+
+type ShellSessionStatusParams = {
+  expiresAtSec?: number | null;
+  nowMs: number;
+  t: ShellTranslator;
+};
+
+type ShellProfileSummaryParams = {
+  profileName?: string | null;
+  profileEmail?: string | null;
+  fallbackName: string;
+  fallbackEmail: string;
+};
+
+export const SHELL_THEME_STORAGE_KEY = "admin_theme";
+export const SHELL_SESSION_EXPIRY_STORAGE_KEY =
+  "baron_session_expiry_enabled";
+
+export const shellLayoutClasses = {
+  root: "grid min-h-screen bg-background text-foreground md:grid-cols-[240px,1fr]",
+  aside:
+    "flex flex-col justify-between border-b border-border bg-card md:sticky md:top-0 md:h-screen md:border-b-0 md:border-r md:bg-card md:backdrop-blur",
+  asideStatic:
+    "border-b border-border bg-card md:sticky md:top-0 md:h-screen md:border-b-0 md:border-r md:bg-card md:backdrop-blur",
+  brandSection:
+    "flex items-center justify-between px-5 py-4 md:block md:space-y-6 md:py-6",
+  brandWrap: "flex items-center gap-3 md:flex-col md:items-start",
+  brandIcon:
+    "grid h-11 w-11 place-items-center rounded-xl bg-primary/15 text-primary shadow-[0_12px_30px_rgba(54,211,153,0.22)]",
+  scopeBadge:
+    "hidden rounded-full border border-border px-3 py-2 text-xs text-muted-foreground md:inline-flex md:items-center md:gap-2",
+  navWrap: "px-2 pb-4 md:px-3 md:pb-8",
+  navMeta:
+    "flex flex-wrap gap-2 px-3 pb-4 text-[11px] text-muted-foreground md:flex-col md:items-start",
+  navList: "flex flex-col gap-1",
+  navItemBase:
+    "flex items-center gap-3 rounded-xl px-3 py-3 text-sm transition",
+  navItemActive:
+    "bg-primary/10 text-primary shadow-[0_12px_40px_rgba(54,211,153,0.18)]",
+  navItemIdle: "text-muted-foreground hover:bg-muted/10 hover:text-foreground",
+  sidebarFooterNotice:
+    "hidden space-y-2 px-5 pb-6 pt-2 text-xs text-[var(--color-muted)] md:block",
+  logoutButton:
+    "flex w-full items-center gap-3 rounded-xl px-3 py-3 text-sm text-muted-foreground transition hover:bg-destructive/10 hover:text-destructive",
+  header: "sticky top-0 z-20 border-b border-border bg-background/90 backdrop-blur",
+  headerElevated:
+    "sticky top-0 z-50 border-b border-border bg-background/90 backdrop-blur",
+  headerInner: "flex items-center justify-between px-5 py-4 md:px-8",
+  headerTitleWrap: "flex flex-col gap-1",
+  headerActions: "flex items-center gap-2 text-sm",
+  actionButton:
+    "inline-flex items-center gap-2 rounded-full border border-border px-3 py-2 text-muted-foreground transition hover:bg-muted/20",
+  sessionBadge:
+    "hidden rounded-full border px-3 py-2 text-xs font-medium md:inline-flex",
+  profileInitial:
+    "grid h-8 w-8 place-items-center rounded-full bg-primary/15 text-xs font-semibold text-primary",
+  profileMenu:
+    "absolute right-0 z-30 mt-2 w-72 rounded-xl border border-border bg-card p-3 shadow-xl",
+  profileCard:
+    "mt-2 flex flex-col gap-2 rounded-lg border border-border px-3 py-3",
+  settingsCard: "mt-2 rounded-lg border border-border px-3 py-3",
+  content: "relative",
+  contentWide: "relative min-w-0",
+  main: "px-5 py-6 md:px-10 md:py-10",
+  mainMinWidth: "min-w-0 px-5 py-6 md:px-10 md:py-10",
+} as const;
+
+export function readShellTheme(): ShellTheme {
+  return window.localStorage.getItem(SHELL_THEME_STORAGE_KEY) === "dark"
+    ? "dark"
+    : "light";
+}
+
+export function applyShellTheme(theme: ShellTheme) {
+  const root = document.documentElement;
+  root.classList.remove("light", "dark");
+  root.classList.add(theme);
+  window.localStorage.setItem(SHELL_THEME_STORAGE_KEY, theme);
+}
+
+export function readShellSessionExpiryEnabled() {
+  return window.localStorage.getItem(SHELL_SESSION_EXPIRY_STORAGE_KEY) !== "false";
+}
+
+export function writeShellSessionExpiryEnabled(isEnabled: boolean) {
+  window.localStorage.setItem(
+    SHELL_SESSION_EXPIRY_STORAGE_KEY,
+    String(isEnabled),
+  );
+}
+
+export function buildShellProfileSummary({
+  profileName,
+  profileEmail,
+  fallbackName,
+  fallbackEmail,
+}: ShellProfileSummaryParams) {
+  const resolvedName = profileName?.trim() || fallbackName;
+  const resolvedEmail = profileEmail?.trim() || fallbackEmail;
+
+  return {
+    name: resolvedName,
+    email: resolvedEmail,
+    initial: resolvedName.charAt(0).toUpperCase(),
+  };
+}
+
+export function buildShellSessionStatus({
+  expiresAtSec,
+  nowMs,
+  t,
+}: ShellSessionStatusParams) {
+  const remainingMs =
+    typeof expiresAtSec === "number" ? expiresAtSec * 1000 - nowMs : null;
+  const remainingTotalSec =
+    remainingMs !== null ? Math.max(0, Math.floor(remainingMs / 1000)) : null;
+  const remainingMinutes =
+    remainingTotalSec !== null ? Math.floor(remainingTotalSec / 60) : null;
+  const remainingSeconds =
+    remainingTotalSec !== null ? remainingTotalSec % 60 : null;
+
+  let toneClass =
+    "border-emerald-500/30 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300";
+  let text = t("ui.dev.session.active", "세션 활성");
+
+  if (remainingMs === null) {
+    toneClass = "border-border bg-card text-muted-foreground";
+    text = t("ui.dev.session.unknown", "알 수 없음");
+  } else if (remainingMs <= 0) {
+    toneClass =
+      "border-rose-500/30 bg-rose-500/10 text-rose-700 dark:text-rose-300";
+    text = t("ui.dev.session.expired", "세션 만료");
+  } else if (
+    remainingMinutes !== null &&
+    remainingSeconds !== null &&
+    remainingMinutes <= 5
+  ) {
+    toneClass =
+      "border-amber-500/30 bg-amber-500/10 text-amber-700 dark:text-amber-300";
+    text = t(
+      "ui.dev.session.expiring",
+      "만료 임박: {{minutes}}분 {{seconds}}초 남음",
+      {
+        minutes: remainingMinutes,
+        seconds: remainingSeconds,
+      },
+    );
+  } else {
+    text = t(
+      "ui.dev.session.remaining",
+      "만료 예정: {{minutes}}분 {{seconds}}초 남음",
+      {
+        minutes: remainingMinutes ?? 0,
+        seconds: remainingSeconds ?? 0,
+      },
+    );
+  }
+
+  return {
+    toneClass,
+    text,
+  };
+}
--- a/common/theme/base.css
+++ b/common/theme/base.css
@@ -0,0 +1,64 @@
+@layer base {
+  :root.light {
+    --background: 0 0% 98%;
+    --foreground: 223 25% 12%;
+    --card: 0 0% 100%;
+    --card-foreground: 223 25% 12%;
+    --popover: 0 0% 100%;
+    --popover-foreground: 223 25% 12%;
+    --primary: 209 79% 52%;
+    --primary-foreground: 0 0% 100%;
+    --secondary: 220 17% 94%;
+    --secondary-foreground: 223 25% 20%;
+    --muted: 223 15% 45%;
+    --muted-foreground: 223 15% 45%;
+    --accent: 40 96% 62%;
+    --accent-foreground: 223 25% 12%;
+    --destructive: 0 84% 60%;
+    --destructive-foreground: 0 0% 100%;
+    --border: 220 17% 90%;
+    --input: 220 17% 90%;
+    --ring: 209 79% 52%;
+  }
+
+  :root.dark {
+    --background: 210 25% 6%;
+    --foreground: 210 35% 96%;
+    --card: 215 32% 9%;
+    --card-foreground: 210 35% 96%;
+    --popover: 215 32% 9%;
+    --popover-foreground: 210 35% 96%;
+    --primary: 209 79% 52%;
+    --primary-foreground: 210 35% 96%;
+    --secondary: 215 25% 16%;
+    --secondary-foreground: 210 35% 96%;
+    --muted: 215 15% 65%;
+    --muted-foreground: 215 15% 65%;
+    --accent: 42 95% 57%;
+    --accent-foreground: 215 25% 10%;
+    --destructive: 0 84% 60%;
+    --destructive-foreground: 210 35% 96%;
+    --border: 215 25% 24%;
+    --input: 215 25% 24%;
+    --ring: 209 79% 52%;
+  }
+
+  * {
+    @apply border-border;
+  }
+
+  body {
+    @apply min-h-screen bg-background font-sans text-foreground antialiased;
+    background-image: var(--app-background-image, none);
+  }
+
+  a {
+    @apply text-inherit no-underline;
+  }
+}
+
+@layer components {
+  .glass-panel {
+    @apply rounded-2xl border border-border bg-card/85 shadow-card backdrop-blur;
+  }
+}
--- a/common/ui/badge.ts
+++ b/common/ui/badge.ts
@@ -0,0 +1,26 @@
+export const commonBadgeBaseClass =
+  "inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2";
+
+export const commonBadgeVariantClasses = {
+  default:
+    "border-transparent bg-primary text-primary-foreground shadow hover:bg-primary/90",
+  secondary:
+    "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80",
+  outline: "text-foreground",
+  muted: "border-border bg-secondary/60 text-muted-foreground",
+  success:
+    "border-transparent bg-emerald-100 text-emerald-700 dark:bg-emerald-900/40 dark:text-emerald-300",
+  warning:
+    "border-transparent bg-amber-100 text-amber-700 dark:bg-amber-900/40 dark:text-amber-200",
+  info: "border-transparent bg-blue-500 text-white hover:bg-blue-500/90",
+} as const;
+
+export type CommonBadgeVariant = keyof typeof commonBadgeVariantClasses;
+
+export function getCommonBadgeClasses({
+  variant = "default",
+}: {
+  variant?: CommonBadgeVariant;
+}) {
+  return [commonBadgeBaseClass, commonBadgeVariantClasses[variant]].join(" ");
+}
--- a/common/ui/button.ts
+++ b/common/ui/button.ts
@@ -0,0 +1,37 @@
+export const commonButtonBaseClass =
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-semibold transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 ring-offset-background";
+
+export const commonButtonVariantClasses = {
+  default: "bg-primary text-primary-foreground shadow hover:bg-primary/90",
+  secondary: "bg-secondary text-secondary-foreground hover:bg-secondary/80",
+  outline:
+    "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
+  ghost: "hover:bg-accent hover:text-accent-foreground",
+  destructive:
+    "bg-destructive text-destructive-foreground hover:bg-destructive/90",
+  muted: "bg-muted text-muted-foreground hover:bg-muted/80",
+} as const;
+
+export const commonButtonSizeClasses = {
+  default: "h-10 px-4 py-2",
+  sm: "h-9 rounded-md px-3",
+  lg: "h-11 rounded-md px-6 text-base",
+  icon: "h-10 w-10",
+} as const;
+
+export type CommonButtonVariant = keyof typeof commonButtonVariantClasses;
+export type CommonButtonSize = keyof typeof commonButtonSizeClasses;
+
+export function getCommonButtonClasses({
+  variant = "default",
+  size = "default",
+}: {
+  variant?: CommonButtonVariant;
+  size?: CommonButtonSize;
+}) {
+  return [
+    commonButtonBaseClass,
+    commonButtonVariantClasses[variant],
+    commonButtonSizeClasses[size],
+  ].join(" ");
+}
--- a/common/ui/card.ts
+++ b/common/ui/card.ts
@@ -0,0 +1,7 @@
+export const commonCardClass =
+  "rounded-2xl border border-border bg-card/90 text-card-foreground shadow-card";
+export const commonCardHeaderClass = "flex flex-col space-y-1.5 p-6";
+export const commonCardTitleClass = "text-lg font-semibold leading-none";
+export const commonCardDescriptionClass = "text-sm text-muted-foreground";
+export const commonCardContentClass = "p-6 pt-0";
+export const commonCardFooterClass = "flex items-center p-6 pt-0";
--- a/common/ui/input.ts
+++ b/common/ui/input.ts
@@ -0,0 +1,2 @@
+export const commonInputClass =
+  "flex h-10 w-full rounded-lg border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50";
--- a/devfront/src/app/queryClient.ts
+++ b/devfront/src/app/queryClient.ts
@@ -1,11 +1,7 @@
 import { QueryClient } from "@tanstack/react-query";

+import { queryClientDefaultOptions } from "../../../common/core/query/queryClient";
+
 export const queryClient = new QueryClient({
-  defaultOptions: {
-    queries: {
-      staleTime: 30_000,
-      refetchOnWindowFocus: false,
-      retry: 1,
-    },
-  },
+  defaultOptions: queryClientDefaultOptions,
 });
--- a/devfront/src/app/routes.tsx
+++ b/devfront/src/app/routes.tsx
@@ -1,8 +1,4 @@
-import {
-  Navigate,
-  type RouteObject,
-  createBrowserRouter,
-} from "react-router-dom";
+import { type RouteObject, createBrowserRouter } from "react-router-dom";
 import AppLayout from "../components/layout/AppLayout";
 import AuditLogsPage from "../features/audit/AuditLogsPage";
 import AuthCallbackPage from "../features/auth/AuthCallbackPage";
@@ -13,6 +9,7 @@ import ClientDetailsPage from "../features/clients/ClientDetailsPage";
 import ClientGeneralPage from "../features/clients/ClientGeneralPage";
 import ClientRelationsPage from "../features/clients/ClientRelationsPage";
 import ClientsPage from "../features/clients/ClientsPage";
+import DashboardPage from "../features/dashboard/DashboardPage";
 import DeveloperRequestPage from "../features/developer-request/DeveloperRequestPage";
 import ProfilePage from "../features/profile/ProfilePage";
 import { DEVFRONT_AUTH_CALLBACK_PATH } from "../lib/authConfig";
@@ -33,7 +30,7 @@ export const devFrontRoutes: RouteObject[] = [
      {
        element: <AppLayout />,
        children: [
-          { index: true, element: <Navigate to="/clients" replace /> },
+          { index: true, element: <DashboardPage /> },
          { path: "clients", element: <ClientsPage /> },
          { path: "clients/new", element: <ClientGeneralPage /> },
          { path: "clients/:id", element: <ClientDetailsPage /> },
--- a/devfront/src/components/layout/AppLayout.tsx
+++ b/devfront/src/components/layout/AppLayout.tsx
@@ -3,6 +3,7 @@ import {
  BadgeCheck,
  ChevronDown,
  ClipboardCheck,
+  LayoutDashboard,
  LogOut,
  Moon,
  NotebookTabs,
@@ -20,10 +21,25 @@ import {
  shouldAttemptSlidingSessionRenew,
  shouldAttemptUnlimitedSessionRenew,
 } from "../../lib/sessionSliding";
+import {
+  applyShellTheme,
+  buildShellProfileSummary,
+  buildShellSessionStatus,
+  readShellSessionExpiryEnabled,
+  readShellTheme,
+  shellLayoutClasses,
+  writeShellSessionExpiryEnabled,
+} from "../../../../common/shell";
 import LanguageSelector from "../common/LanguageSelector";
 import { Toaster } from "../ui/toaster";

 const navItems = [
+  {
+    labelKey: "ui.dev.nav.overview",
+    labelFallback: "Overview",
+    to: "/",
+    icon: LayoutDashboard,
+  },
  {
    labelKey: "ui.dev.nav.clients",
    labelFallback: "Clients",
@@ -52,15 +68,11 @@ function AppLayout() {
  const isRenewInFlightRef = useRef(false);
  const lastRenewAttemptAtRef = useRef(0);
  const lastVisitedRouteRef = useRef<string | null>(null);
-  const [theme, setTheme] = useState<"light" | "dark">(() => {
-    const stored = window.localStorage.getItem("admin_theme");
-    return stored === "dark" ? "dark" : "light";
-  });
+  const [theme, setTheme] = useState<"light" | "dark">(readShellTheme);
  const [isProfileMenuOpen, setIsProfileMenuOpen] = useState(false);
-  const [isSessionExpiryEnabled, setIsSessionExpiryEnabled] = useState(() => {
-    const stored = window.localStorage.getItem("baron_session_expiry_enabled");
-    return stored !== "false";
-  });
+  const [isSessionExpiryEnabled, setIsSessionExpiryEnabled] = useState(
+    readShellSessionExpiryEnabled,
+  );
  const [nowMs, setNowMs] = useState(() => Date.now());

  const hasAccessToken = Boolean(auth.user?.access_token);
@@ -82,14 +94,7 @@ function AppLayout() {
  };

  useEffect(() => {
-    const root = document.documentElement;
-    root.classList.remove("light", "dark");
-    if (theme === "light") {
-      root.classList.add("light");
-    } else {
-      root.classList.add("dark");
-    }
-    window.localStorage.setItem("admin_theme", theme);
+    applyShellTheme(theme);
  }, [theme]);

  useEffect(() => {
@@ -265,84 +270,41 @@ function AppLayout() {
    setTheme((prev) => (prev === "light" ? "dark" : "light"));
  };

-  const profileName =
-    profile?.name?.trim() ||
-    auth.user?.profile?.name?.toString().trim() ||
-    auth.user?.profile?.preferred_username?.toString().trim() ||
-    auth.user?.profile?.nickname?.toString().trim() ||
-    t("ui.dev.profile.unknown_name", "Unknown User");
-  const profileEmail =
-    profile?.email?.trim() ||
-    auth.user?.profile?.email?.toString().trim() ||
-    t("ui.dev.profile.unknown_email", "unknown@example.com");
-  const profileInitial = profileName.charAt(0).toUpperCase();
+  const profileSummary = buildShellProfileSummary({
+    profileName:
+      profile?.name ||
+      auth.user?.profile?.name?.toString() ||
+      auth.user?.profile?.preferred_username?.toString() ||
+      auth.user?.profile?.nickname?.toString(),
+    profileEmail: profile?.email || auth.user?.profile?.email?.toString(),
+    fallbackName: t("ui.dev.profile.unknown_name", "Unknown User"),
+    fallbackEmail: t("ui.dev.profile.unknown_email", "unknown@example.com"),
+  });
  const currentRole = resolveProfileRole(
    auth.user?.profile as Record<string, unknown> | undefined,
  );
  const displayRoleKey = profile?.role || currentRole;
-
-  const expiresAtSec = auth.user?.expires_at;
-  const remainingMs =
-    typeof expiresAtSec === "number" ? expiresAtSec * 1000 - nowMs : null;
-  const remainingTotalSec =
-    remainingMs !== null ? Math.max(0, Math.floor(remainingMs / 1000)) : null;
-  const remainingMinutes =
-    remainingTotalSec !== null ? Math.floor(remainingTotalSec / 60) : null;
-  const remainingSeconds =
-    remainingTotalSec !== null ? remainingTotalSec % 60 : null;
-
-  let sessionToneClass =
-    "border-emerald-500/30 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300";
-  let sessionText = t("ui.dev.session.active", "Session active");
-
-  if (remainingMs === null) {
-    sessionToneClass = "border-border bg-card text-muted-foreground";
-    sessionText = t("ui.dev.session.unknown", "Unknown");
-  } else if (remainingMs <= 0) {
-    sessionToneClass =
-      "border-rose-500/30 bg-rose-500/10 text-rose-700 dark:text-rose-300";
-    sessionText = t("ui.dev.session.expired", "Session expired");
-  } else if (
-    remainingMinutes !== null &&
-    remainingSeconds !== null &&
-    remainingMinutes <= 5
-  ) {
-    sessionToneClass =
-      "border-amber-500/30 bg-amber-500/10 text-amber-700 dark:text-amber-300";
-    sessionText = t(
-      "ui.dev.session.expiring",
-      "Expiring soon: {{minutes}}m {{seconds}}s left",
-      {
-        minutes: remainingMinutes,
-        seconds: remainingSeconds,
-      },
-    );
-  } else {
-    sessionText = t(
-      "ui.dev.session.remaining",
-      "Expires in {{minutes}}m {{seconds}}s",
-      {
-        minutes: remainingMinutes ?? 0,
-        seconds: remainingSeconds ?? 0,
-      },
-    );
-  }
+  const sessionStatus = buildShellSessionStatus({
+    expiresAtSec: auth.user?.expires_at,
+    nowMs,
+    t,
+  });

  const handleSessionExpiryToggle = () => {
    setIsSessionExpiryEnabled((prev) => {
      const next = !prev;
-      window.localStorage.setItem("baron_session_expiry_enabled", String(next));
+      writeShellSessionExpiryEnabled(next);
      return next;
    });
  };

  return (
-    <div className="grid min-h-screen bg-background text-foreground md:grid-cols-[240px,1fr]">
-      <aside className="flex flex-col justify-between border-b border-border bg-card md:sticky md:top-0 md:h-screen md:border-b-0 md:border-r md:bg-card md:backdrop-blur">
+    <div className={shellLayoutClasses.root}>
+      <aside className={shellLayoutClasses.aside}>
        <div>
-          <div className="flex items-center justify-between px-5 py-4 md:block md:space-y-6 md:py-6">
-            <div className="flex items-center gap-3 md:flex-col md:items-start">
-              <div className="grid h-11 w-11 place-items-center rounded-xl bg-primary/15 text-primary shadow-[0_12px_30px_rgba(54,211,153,0.22)]">
+          <div className={shellLayoutClasses.brandSection}>
+            <div className={shellLayoutClasses.brandWrap}>
+              <div className={shellLayoutClasses.brandIcon}>
                <ShieldHalf size={20} />
              </div>
              <div>
@@ -354,28 +316,29 @@ function AppLayout() {
                </h1>
              </div>
            </div>
-            <div className="hidden rounded-full border border-border px-3 py-2 text-xs text-muted-foreground md:inline-flex md:items-center md:gap-2">
+            <div className={shellLayoutClasses.scopeBadge}>
              <BadgeCheck size={14} />
              {t("ui.dev.scope_badge", "Scoped to /dev")}
            </div>
          </div>
-          <nav className="px-2 pb-4 md:px-3 md:pb-8">
-            <div className="flex flex-wrap gap-2 px-3 pb-4 text-[11px] text-muted-foreground md:flex-col md:items-start">
+          <nav className={shellLayoutClasses.navWrap}>
+            <div className={shellLayoutClasses.navMeta}>
              <span className="rounded-full border border-border px-3 py-1">
                {t("ui.dev.env_badge", "Env: dev")}
              </span>
            </div>
-            <div className="flex flex-col gap-1">
+            <div className={shellLayoutClasses.navList}>
              {navItems.map(({ labelKey, labelFallback, to, icon: Icon }) => (
                <NavLink
                  key={to}
                  to={to}
+                  end={to === "/"}
                  className={({ isActive }) =>
                    [
-                      "flex items-center gap-3 rounded-xl px-3 py-3 text-sm transition",
+                      shellLayoutClasses.navItemBase,
                      isActive
-                        ? "bg-primary/10 text-primary shadow-[0_12px_40px_rgba(54,211,153,0.18)]"
-                        : "text-muted-foreground hover:bg-muted/10 hover:text-foreground",
+                        ? shellLayoutClasses.navItemActive
+                        : shellLayoutClasses.navItemIdle,
                    ].join(" ")
                  }
                >
@@ -392,13 +355,13 @@ function AppLayout() {
            <button
              type="button"
              onClick={handleLogout}
-              className="flex w-full items-center gap-3 rounded-xl px-3 py-3 text-sm text-muted-foreground transition hover:bg-destructive/10 hover:text-destructive"
+              className={shellLayoutClasses.logoutButton}
            >
              <LogOut size={18} />
              <span>{t("ui.dev.nav.logout", "Logout")}</span>
            </button>
          </div>
-          <div className="hidden space-y-2 px-5 pb-6 pt-2 text-xs text-[var(--color-muted)] md:block">
+          <div className={shellLayoutClasses.sidebarFooterNotice}>
            <p>{t("msg.dev.sidebar.notice", "Developer Console")}</p>
            <p>
              {t(
@@ -410,10 +373,10 @@ function AppLayout() {
        </div>
      </aside>

-      <div className="relative">
-        <header className="sticky top-0 z-20 border-b border-border bg-background/90 backdrop-blur">
-          <div className="flex items-center justify-between px-5 py-4 md:px-8">
-            <div className="flex flex-col gap-1">
+      <div className={shellLayoutClasses.content}>
+        <header className={shellLayoutClasses.header}>
+          <div className={shellLayoutClasses.headerInner}>
+            <div className={shellLayoutClasses.headerTitleWrap}>
              <p className="text-xs uppercase tracking-[0.22em] text-muted-foreground">
                {t("ui.dev.header.plane", "Dev Plane")}
              </p>
@@ -421,12 +384,12 @@ function AppLayout() {
                {t("ui.dev.header.subtitle", "Manage your applications")}
              </span>
            </div>
-            <div className="flex items-center gap-2 text-sm">
+            <div className={shellLayoutClasses.headerActions}>
              <LanguageSelector />
              <button
                type="button"
                onClick={toggleTheme}
-                className="inline-flex items-center gap-2 rounded-full border border-border px-3 py-2 text-muted-foreground transition hover:bg-muted/20"
+                className={shellLayoutClasses.actionButton}
                aria-label={t("ui.common.theme_toggle", "Toggle theme")}
              >
                {theme === "light" ? <Sun size={16} /> : <Moon size={16} />}
@@ -437,11 +400,11 @@ function AppLayout() {
              {isSessionExpiryEnabled ? (
                <span
                  className={[
-                    "hidden rounded-full border px-3 py-2 text-xs font-medium md:inline-flex",
-                    sessionToneClass,
+                    shellLayoutClasses.sessionBadge,
+                    sessionStatus.toneClass,
                  ].join(" ")}
                >
-                  {sessionText}
+                  {sessionStatus.text}
                </span>
              ) : null}
              <div className="relative" ref={profileMenuRef}>
@@ -456,15 +419,15 @@ function AppLayout() {
                    "Open account menu",
                  )}
                >
-                  <div className="grid h-8 w-8 place-items-center rounded-full bg-primary/15 text-xs font-semibold text-primary">
-                    {profileInitial}
+                  <div className={shellLayoutClasses.profileInitial}>
+                    {profileSummary.initial}
                  </div>
                  <div className="hidden min-w-0 text-left md:block">
                    <p className="truncate text-xs font-medium text-foreground">
-                      {profileName}
+                      {profileSummary.name}
                    </p>
                    <p className="truncate text-[11px] text-muted-foreground">
-                      {profileEmail}
+                      {profileSummary.email}
                    </p>
                  </div>
                  <ChevronDown
@@ -473,20 +436,17 @@ function AppLayout() {
                  />
                </button>
                {isProfileMenuOpen ? (
-                  <div
-                    role="menu"
-                    className="absolute right-0 z-30 mt-2 w-72 rounded-xl border border-border bg-card p-3 shadow-xl"
-                  >
+                  <div role="menu" className={shellLayoutClasses.profileMenu}>
                    <p className="text-xs uppercase tracking-[0.16em] text-muted-foreground">
                      {t("ui.dev.profile.menu_title", "Account")}
                    </p>
-                    <div className="mt-2 flex flex-col gap-2 rounded-lg border border-border px-3 py-3">
+                    <div className={shellLayoutClasses.profileCard}>
                      <div>
                        <p className="truncate text-sm font-semibold text-foreground">
-                          {profileName}
+                          {profileSummary.name}
                        </p>
                        <p className="truncate text-xs text-muted-foreground">
-                          {profileEmail}
+                          {profileSummary.email}
                        </p>
                      </div>
                      <div className="flex items-center pt-1">
@@ -499,7 +459,7 @@ function AppLayout() {
                      </div>
                    </div>

-                    <div className="mt-2 rounded-lg border border-border px-3 py-3">
+                    <div className={shellLayoutClasses.settingsCard}>
                      <div className="flex items-center justify-between gap-3">
                        <div>
                          <p className="text-sm font-medium text-foreground">
@@ -507,7 +467,7 @@ function AppLayout() {
                          </p>
                          <p className="text-xs text-muted-foreground">
                            {isSessionExpiryEnabled
-                              ? sessionText
+                              ? sessionStatus.text
                              : t(
                                  "ui.dev.session.disabled",
                                  "Session expiry disabled",
@@ -563,7 +523,7 @@ function AppLayout() {
            </div>
          </div>
        </header>
-        <main className="px-5 py-6 md:px-10 md:py-10">
+        <main className={shellLayoutClasses.main}>
          <Outlet />
        </main>
      </div>
--- a/devfront/src/components/ui/badge.tsx
+++ b/devfront/src/components/ui/badge.tsx
@@ -1,39 +1,21 @@
-import { type VariantProps, cva } from "class-variance-authority";
 import type * as React from "react";
+import {
+  type CommonBadgeVariant,
+  getCommonBadgeClasses,
+} from "../../../../common/ui/badge";
 import { cn } from "../../lib/utils";

-const badgeVariants = cva(
-  "inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",
-  {
-    variants: {
-      variant: {
-        default:
-          "border-transparent bg-primary text-primary-foreground shadow hover:bg-primary/90",
-        secondary:
-          "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80",
-        outline: "text-foreground",
-        muted: "border-border bg-secondary/60 text-muted-foreground",
-        success:
-          "border-transparent bg-emerald-100 text-emerald-700 dark:bg-emerald-900/40 dark:text-emerald-300",
-        warning:
-          "border-transparent bg-amber-100 text-amber-700 dark:bg-amber-900/40 dark:text-amber-200",
-        info: "border-transparent bg-blue-500 text-white hover:bg-blue-500/90",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-    },
-  },
-);
-
-export interface BadgeProps
-  extends React.HTMLAttributes<HTMLDivElement>,
-    VariantProps<typeof badgeVariants> {}
+export interface BadgeProps extends React.HTMLAttributes<HTMLDivElement> {
+  variant?: CommonBadgeVariant;
+}

 function Badge({ className, variant, ...props }: BadgeProps) {
  return (
-    <div className={cn(badgeVariants({ variant }), className)} {...props} />
+    <div
+      className={cn(getCommonBadgeClasses({ variant }), className)}
+      {...props}
+    />
  );
 }

-export { Badge, badgeVariants };
+export { Badge };
--- a/devfront/src/components/ui/button.tsx
+++ b/devfront/src/components/ui/button.tsx
@@ -1,41 +1,16 @@
 import { Slot } from "@radix-ui/react-slot";
-import { type VariantProps, cva } from "class-variance-authority";
 import * as React from "react";
+import {
+  type CommonButtonSize,
+  type CommonButtonVariant,
+  getCommonButtonClasses,
+} from "../../../../common/ui/button";
 import { cn } from "../../lib/utils";

-const buttonVariants = cva(
-  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-semibold transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 ring-offset-background",
-  {
-    variants: {
-      variant: {
-        default:
-          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
-        secondary:
-          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
-        outline:
-          "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
-        ghost: "hover:bg-accent hover:text-accent-foreground",
-        destructive:
-          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
-        muted: "bg-muted text-muted-foreground hover:bg-muted/80",
-      },
-      size: {
-        default: "h-10 px-4 py-2",
-        sm: "h-9 rounded-md px-3",
-        lg: "h-11 rounded-md px-6 text-base",
-        icon: "h-10 w-10",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-      size: "default",
-    },
-  },
-);
-
 export interface ButtonProps
-  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
-    VariantProps<typeof buttonVariants> {
+  extends React.ButtonHTMLAttributes<HTMLButtonElement> {
+  variant?: CommonButtonVariant;
+  size?: CommonButtonSize;
  asChild?: boolean;
 }

@@ -44,7 +19,7 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
    const Comp = asChild ? Slot : "button";
    return (
      <Comp
-        className={cn(buttonVariants({ variant, size, className }))}
+        className={cn(getCommonButtonClasses({ variant, size }), className)}
        ref={ref}
        {...props}
      />
@@ -53,4 +28,4 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
 );
 Button.displayName = "Button";

-export { Button, buttonVariants };
+export { Button };
--- a/devfront/src/components/ui/card.tsx
+++ b/devfront/src/components/ui/card.tsx
@@ -1,65 +1,51 @@
 import type * as React from "react";
+import {
+  commonCardClass,
+  commonCardContentClass,
+  commonCardDescriptionClass,
+  commonCardFooterClass,
+  commonCardHeaderClass,
+  commonCardTitleClass,
+} from "../../../../common/ui/card";
 import { cn } from "../../lib/utils";

 function Card({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div
-      className={cn(
-        "rounded-2xl border border-border bg-card/90 text-card-foreground shadow-card",
-        className,
-      )}
-      {...props}
-    />
-  );
+  return <div className={cn(commonCardClass, className)} {...props} />;
 }

 function CardHeader({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div
-      className={cn("flex flex-col space-y-1.5 p-6", className)}
-      {...props}
-    />
-  );
+  return <div className={cn(commonCardHeaderClass, className)} {...props} />;
 }

 function CardTitle({
  className,
  ...props
 }: React.HTMLAttributes<HTMLHeadingElement>) {
-  return (
-    <h3
-      className={cn("text-lg font-semibold leading-none", className)}
-      {...props}
-    />
-  );
+  return <h3 className={cn(commonCardTitleClass, className)} {...props} />;
 }

 function CardDescription({
  className,
  ...props
 }: React.HTMLAttributes<HTMLParagraphElement>) {
-  return (
-    <p className={cn("text-sm text-muted-foreground", className)} {...props} />
-  );
+  return <p className={cn(commonCardDescriptionClass, className)} {...props} />;
 }

 function CardContent({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return <div className={cn("p-6 pt-0", className)} {...props} />;
+  return <div className={cn(commonCardContentClass, className)} {...props} />;
 }

 function CardFooter({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div className={cn("flex items-center p-6 pt-0", className)} {...props} />
-  );
+  return <div className={cn(commonCardFooterClass, className)} {...props} />;
 }

 export {
--- a/devfront/src/components/ui/input.tsx
+++ b/devfront/src/components/ui/input.tsx
@@ -1,4 +1,5 @@
 import * as React from "react";
+import { commonInputClass } from "../../../../common/ui/input";
 import { cn } from "../../lib/utils";

 export interface InputProps
@@ -9,10 +10,7 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(
    return (
      <input
        type={type}
-        className={cn(
-          "flex h-10 w-full rounded-lg border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
-          className,
-        )}
+        className={cn(commonInputClass, className)}
        ref={ref}
        {...props}
      />
--- a/devfront/src/features/clients/ClientsPage.tsx
+++ b/devfront/src/features/clients/ClientsPage.tsx
@@ -1,9 +1,24 @@
 import { useMutation, useQuery } from "@tanstack/react-query";
 import type { AxiosError } from "axios";
-import { BookOpenText, Filter, Plus, Search, X } from "lucide-react";
-import { useEffect, useState } from "react";
+import {
+  ArrowDown,
+  ArrowUp,
+  ArrowUpDown,
+  BookOpenText,
+  Filter,
+  Plus,
+  Search,
+  X,
+} from "lucide-react";
+import { useEffect, useMemo, useState } from "react";
 import { useAuth } from "react-oidc-context";
 import { Link, useNavigate } from "react-router-dom";
+import {
+  sortItems,
+  toggleSort,
+  type SortConfig,
+  type SortResolverMap,
+} from "../../../../common/core/utils";
 import { ForbiddenMessage } from "../../components/common/ForbiddenMessage";
 import {
  Avatar,
@@ -37,6 +52,7 @@ import {
  fetchDeveloperRequestStatus,
  fetchMyTenants,
  requestDeveloperAccess,
+  type ClientSummary,
 } from "../../lib/devApi";
 import { t } from "../../lib/i18n";
 import { resolveProfileRole } from "../../lib/role";
@@ -44,6 +60,8 @@ import { cn } from "../../lib/utils";
 import { fetchMe } from "../auth/authApi";
 import { ClientLogo } from "./components/ClientLogo";

+type ClientSortKey = "application" | "id" | "type" | "status" | "createdAt";
+
 function ClientsPage() {
  const navigate = useNavigate();
  const auth = useAuth();
@@ -104,19 +122,48 @@ function ClientsPage() {
  const [statusFilter, setStatusFilter] = useState("all");
  const [isAdvancedFilterOpen, setIsAdvancedFilterOpen] = useState(false);
  const [isRequestModalOpen, setIsRequestModalOpen] = useState(false);
+  const [sortConfig, setSortConfig] =
+    useState<SortConfig<ClientSortKey> | null>(null);

  const clients = data?.items || [];
+  const clientSortResolvers = useMemo<
+    SortResolverMap<ClientSummary, ClientSortKey>
+  >(
+    () => ({
+      application: (client) => client.name || client.id,
+      id: (client) => client.id,
+      type: (client) =>
+        client.metadata?.headless_login_enabled
+          ? "private-headless"
+          : client.type,
+      status: (client) => client.status,
+      createdAt: (client) =>
+        client.createdAt ? new Date(client.createdAt) : null,
+    }),
+    [],
+  );

-  const filteredClients = clients.filter((client) => {
-    const matchesSearch =
-      !searchQuery ||
-      client.name?.toLowerCase().includes(searchQuery.toLowerCase()) ||
-      client.id.toLowerCase().includes(searchQuery.toLowerCase());
-    const matchesType = typeFilter === "all" || client.type === typeFilter;
-    const matchesStatus =
-      statusFilter === "all" || client.status === statusFilter;
-    return matchesSearch && matchesType && matchesStatus;
-  });
+  const filteredClients = useMemo(() => {
+    const nextClients = clients.filter((client) => {
+      const matchesSearch =
+        !searchQuery ||
+        client.name?.toLowerCase().includes(searchQuery.toLowerCase()) ||
+        client.id.toLowerCase().includes(searchQuery.toLowerCase());
+      const matchesType = typeFilter === "all" || client.type === typeFilter;
+      const matchesStatus =
+        statusFilter === "all" || client.status === statusFilter;
+      return matchesSearch && matchesType && matchesStatus;
+    });
+
+    return sortItems(nextClients, sortConfig, clientSortResolvers);
+  }, [
+    clientSortResolvers,
+    clients,
+    searchQuery,
+    sortConfig,
+    statusFilter,
+    typeFilter,
+  ]);

  const totalClients = statsData?.total_clients ?? clients.length;
  const activeSessions = statsData?.active_sessions ?? 0;
@@ -179,6 +226,22 @@ function ClientsPage() {

  const isLoading = isLoadingClients || isLoadingStats || isLoadingRequest;

+  const requestSort = (key: ClientSortKey) => {
+    setSortConfig((current) => toggleSort(current, key));
+  };
+
+  const getSortIcon = (key: ClientSortKey) => {
+    if (!sortConfig || sortConfig.key !== key) {
+      return <ArrowUpDown className="ml-1 h-4 w-4 opacity-50" />;
+    }
+
+    return sortConfig.direction === "asc" ? (
+      <ArrowUp className="ml-1 h-4 w-4" />
+    ) : (
+      <ArrowDown className="ml-1 h-4 w-4" />
+    );
+  };
+
  if (auth.isLoading || !hasAccessToken || isLoading) {
    return (
      <div className="p-8 text-center">
@@ -389,18 +452,50 @@ function ClientsPage() {
          <Table>
            <TableHeader>
              <TableRow>
-                <TableHead>
-                  {t("ui.dev.clients.table.application", "애플리케이션")}
+                <TableHead
+                  className="cursor-pointer hover:bg-muted/50 transition-colors"
+                  onClick={() => requestSort("application")}
+                >
+                  <div className="flex items-center">
+                    {t("ui.dev.clients.table.application", "애플리케이션")}
+                    {getSortIcon("application")}
+                  </div>
                </TableHead>
-                <TableHead>
-                  {t("ui.dev.clients.table.client_id", "Client ID")}
+                <TableHead
+                  className="cursor-pointer hover:bg-muted/50 transition-colors"
+                  onClick={() => requestSort("id")}
+                >
+                  <div className="flex items-center">
+                    {t("ui.dev.clients.table.client_id", "Client ID")}
+                    {getSortIcon("id")}
+                  </div>
                </TableHead>
-                <TableHead>{t("ui.dev.clients.table.type", "유형")}</TableHead>
-                <TableHead>
-                  {t("ui.dev.clients.table.status", "상태")}
+                <TableHead
+                  className="cursor-pointer hover:bg-muted/50 transition-colors"
+                  onClick={() => requestSort("type")}
+                >
+                  <div className="flex items-center">
+                    {t("ui.dev.clients.table.type", "유형")}
+                    {getSortIcon("type")}
+                  </div>
                </TableHead>
-                <TableHead>
-                  {t("ui.dev.clients.table.created_at", "생성일")}
+                <TableHead
+                  className="cursor-pointer hover:bg-muted/50 transition-colors"
+                  onClick={() => requestSort("status")}
+                >
+                  <div className="flex items-center">
+                    {t("ui.dev.clients.table.status", "상태")}
+                    {getSortIcon("status")}
+                  </div>
+                </TableHead>
+                <TableHead
+                  className="cursor-pointer hover:bg-muted/50 transition-colors"
+                  onClick={() => requestSort("createdAt")}
+                >
+                  <div className="flex items-center">
+                    {t("ui.dev.clients.table.created_at", "생성일")}
+                    {getSortIcon("createdAt")}
+                  </div>
                </TableHead>
                <TableHead className="text-right">
                  {t("ui.dev.clients.table.actions", "액션")}
--- a/devfront/src/features/dashboard/DashboardPage.tsx
+++ b/devfront/src/features/dashboard/DashboardPage.tsx
--- a/devfront/src/index.css
+++ b/devfront/src/index.css
@@ -1,3 +1,5 @@
+@import "../../common/theme/base.css";
+
@tailwind base;
@tailwind components;
@tailwind utilities;
@@ -24,37 +26,7 @@
    --input: 215 25% 24%;
    --ring: 209 79% 52%;
    --radius: 0.75rem;
-  }
-
-  .light {
-    --background: 0 0% 98%;
-    --foreground: 223 25% 12%;
-    --card: 0 0% 100%;
-    --card-foreground: 223 25% 12%;
-    --popover: 0 0% 100%;
-    --popover-foreground: 223 25% 12%;
-    --primary: 209 79% 52%;
-    --primary-foreground: 0 0% 100%;
-    --secondary: 220 17% 94%;
-    --secondary-foreground: 223 25% 20%;
-    --muted: 223 15% 45%;
-    --muted-foreground: 223 15% 45%;
-    --accent: 40 96% 62%;
-    --accent-foreground: 223 25% 12%;
-    --destructive: 0 84% 60%;
-    --destructive-foreground: 0 0% 100%;
-    --border: 220 17% 90%;
-    --input: 220 17% 90%;
-    --ring: 209 79% 52%;
-  }
-
-  * {
-    @apply border-border;
-  }
-
-  body {
-    @apply min-h-screen bg-background font-sans text-foreground antialiased;
-    background-image: radial-gradient(
+    --app-background-image: radial-gradient(
        circle at 10% 18%,
        rgba(54, 211, 153, 0.16),
        transparent 28%
@@ -70,14 +42,4 @@
        transparent 30%
      );
  }
-
-  a {
-    @apply text-inherit no-underline;
-  }
-}
-
-@layer components {
-  .glass-panel {
-    @apply rounded-2xl border border-border bg-card/85 shadow-card backdrop-blur;
-  }
 }
--- a/devfront/src/lib/auth.ts
+++ b/devfront/src/lib/auth.ts
@@ -1,32 +1,23 @@
 import { UserManager, WebStorageStateStore } from "oidc-client-ts";
 import type { AuthProviderProps } from "react-oidc-context";
 import {
-  buildDevFrontAuthRedirectUris,
-  resolveDevFrontPublicOrigin,
-} from "./authConfig";
+  buildCommonOidcRuntimeConfig,
+  buildCommonUserManagerSettings,
+} from "../../../common/core/auth";
+import { resolveDevFrontPublicOrigin } from "./authConfig";

 const devFrontPublicOrigin = resolveDevFrontPublicOrigin(
  import.meta.env.VITE_DEVFRONT_PUBLIC_URL,
  window.location.origin,
 );
-const devFrontRedirectUris =
-  buildDevFrontAuthRedirectUris(devFrontPublicOrigin);

-export const oidcConfig: AuthProviderProps = {
-  authority: import.meta.env.VITE_OIDC_AUTHORITY || "https://sso.hmac.kr/oidc", // Gateway Proxy URL
-  client_id: import.meta.env.VITE_OIDC_CLIENT_ID || "devfront",
-  redirect_uri: devFrontRedirectUris.redirectUri,
-  response_type: "code",
-  scope: "openid offline_access profile email", // offline_access for refresh token
-  post_logout_redirect_uri: devFrontRedirectUris.postLogoutRedirectUri,
-  popup_redirect_uri: devFrontRedirectUris.popupRedirectUri,
+export const oidcConfig: AuthProviderProps = buildCommonOidcRuntimeConfig({
+  authority: import.meta.env.VITE_OIDC_AUTHORITY || "https://sso.hmac.kr/oidc",
+  clientId: import.meta.env.VITE_OIDC_CLIENT_ID || "devfront",
+  origin: devFrontPublicOrigin,
  userStore: new WebStorageStateStore({ store: window.localStorage }),
-  automaticSilentRenew: false,
-};
-
-export const userManager = new UserManager({
-  ...oidcConfig,
-  authority: oidcConfig.authority || "",
-  client_id: oidcConfig.client_id || "",
-  redirect_uri: oidcConfig.redirect_uri || "",
 });
+
+export const userManager = new UserManager(
+  buildCommonUserManagerSettings(oidcConfig),
+);
--- a/devfront/src/lib/devApi.ts
+++ b/devfront/src/lib/devApi.ts
@@ -53,6 +53,27 @@ export type DevStats = {
  auth_failures_24h: number;
 };

+export type RPUsageDailyMetric = {
+  date: string;
+  tenantId: string;
+  tenantType: string;
+  tenantName?: string;
+  clientId: string;
+  clientName: string;
+  loginRequests: number;
+  otherRequests: number;
+  uniqueSubjects: number;
+};
+
+export type RPUsagePeriod = "day" | "week" | "month";
+
+export type RPUsageDailyResponse = {
+  items: RPUsageDailyMetric[];
+  days: number;
+  period: RPUsagePeriod;
+  tenantId?: string;
+};
+
 export type DevAuditLog = {
  event_id: string;
  timestamp: string;
@@ -214,6 +235,22 @@ export async function fetchDevStats() {
  return data;
 }

+export async function fetchDevRPUsageDaily({
+  days = 14,
+  period = "day",
+}: {
+  days?: number;
+  period?: RPUsagePeriod;
+} = {}) {
+  const { data } = await apiClient.get<RPUsageDailyResponse>(
+    "/dev/rp-usage/daily",
+    {
+      params: { days, period },
+    },
+  );
+  return data;
+}
+
 export async function fetchTenants(
  limit = 1000,
  offset = 0,
--- a/devfront/src/lib/i18n.ts
+++ b/devfront/src/lib/i18n.ts
@@ -1,149 +1,16 @@
-const LOCALE_STORAGE_KEY = "locale";
-const DEFAULT_LOCALE = "ko";
-const SUPPORTED_LOCALES = ["ko", "en"] as const;
-
-type Locale = (typeof SUPPORTED_LOCALES)[number];
-
-type TomlValue = string | TomlObject;
-
-interface TomlObject {
-  [key: string]: TomlValue;
-}
-
-function isSupportedLocale(value: string): value is Locale {
-  return (SUPPORTED_LOCALES as readonly string[]).includes(value);
-}
-
-function parseToml(raw: string): TomlObject {
-  const lines = raw.split(/\r?\n/);
-  const root: TomlObject = {};
-  let currentPath: string[] = [];
-
-  for (const rawLine of lines) {
-    const line = rawLine.trim();
-    if (!line || line.startsWith("#")) {
-      continue;
-    }
-
-    if (line.startsWith("[") && line.endsWith("]")) {
-      const sectionName = line.slice(1, -1).trim();
-      currentPath = sectionName
-        ? sectionName
-            .split(".")
-            .map((part) => part.trim())
-            .filter(Boolean)
-        : [];
-      continue;
-    }
-
-    const eqIndex = line.indexOf("=");
-    if (eqIndex === -1) {
-      continue;
-    }
-
-    const key = line.slice(0, eqIndex).trim();
-    const valueRaw = line.slice(eqIndex + 1).trim();
-    if (!key) {
-      continue;
-    }
-
-    let value = valueRaw;
-    if (
-      (value.startsWith('"') && value.endsWith('"')) ||
-      (value.startsWith("'") && value.endsWith("'"))
-    ) {
-      value = value.slice(1, -1);
-    }
-
-    let cursor: TomlObject = root;
-    for (const section of currentPath) {
-      if (!cursor[section] || typeof cursor[section] === "string") {
-        cursor[section] = {};
-      }
-      cursor = cursor[section] as TomlObject;
-    }
-
-    cursor[key] = value;
-  }
-
-  return root;
-}
-
-function getValue(target: TomlObject, key: string): string | undefined {
-  const parts = key.split(".");
-  let cursor: TomlValue = target;
-  for (const part of parts) {
-    if (typeof cursor !== "object" || cursor === null) {
-      return undefined;
-    }
-    cursor = (cursor as TomlObject)[part];
-    if (cursor === undefined) {
-      return undefined;
-    }
-  }
-  return typeof cursor === "string" ? cursor : undefined;
-}
-
-function detectLocale(): Locale {
-  if (typeof window === "undefined") {
-    return DEFAULT_LOCALE;
-  }
-
-  const stored = window.localStorage.getItem(LOCALE_STORAGE_KEY);
-  if (stored && isSupportedLocale(stored)) {
-    return stored;
-  }
-
-  const pathLocale = window.location.pathname.split("/")[1];
-  if (pathLocale && isSupportedLocale(pathLocale)) {
-    return pathLocale;
-  }
-
-  const browserLang = window.navigator.language.toLowerCase();
-  if (browserLang.startsWith("ko")) {
-    return "ko";
-  }
-
-  return DEFAULT_LOCALE;
-}
+import { createTomlTranslator } from "../../../common/core/i18n";

+// eslint-disable-next-line import/no-unresolved
+import commonEnRaw from "../../../common/locales/en.toml?raw";
+// eslint-disable-next-line import/no-unresolved
+import commonKoRaw from "../../../common/locales/ko.toml?raw";
 // eslint-disable-next-line import/no-unresolved
 import enRaw from "../locales/en.toml?raw";
 // Vite ?raw import는 런타임 상수로 번들됩니다.
 // eslint-disable-next-line import/no-unresolved
 import koRaw from "../locales/ko.toml?raw";

-const translations: Record<Locale, TomlObject> = {
-  ko: parseToml(koRaw),
-  en: parseToml(enRaw),
-};
-
-function formatTemplate(
-  template: string,
-  vars?: Record<string, string | number>,
-): string {
-  const normalizedTemplate = template.replace(/\\n/g, "\n");
-  if (!vars) {
-    return normalizedTemplate;
-  }
-  return normalizedTemplate.replace(/\{\{\s*(\w+)\s*\}\}/g, (match, key) => {
-    const value = vars[key];
-    if (value === undefined || value === null) {
-      return match;
-    }
-    return String(value);
-  });
-}
-
-export function t(
-  key: string,
-  fallback?: string,
-  vars?: Record<string, string | number>,
-): string {
-  const locale = detectLocale();
-  const value = getValue(translations[locale], key);
-  if (value && value.length > 0) {
-    return formatTemplate(value, vars);
-  }
-  return formatTemplate(fallback ?? key, vars);
-}
+export const t = createTomlTranslator({
+  ko: [commonKoRaw, koRaw],
+  en: [commonEnRaw, enRaw],
+});
--- a/devfront/src/lib/sessionSliding.ts
+++ b/devfront/src/lib/sessionSliding.ts
@@ -1,76 +1,6 @@
-export const SESSION_RENEW_THRESHOLD_MS = 10 * 60 * 1000;
-export const SESSION_RENEW_THROTTLE_MS = 30 * 1000;
-
-type SlidingSessionRenewDecisionParams = {
-  expiresAtSec?: number | null;
-  nowMs: number;
-  isEnabled: boolean;
-  isAuthenticated: boolean;
-  isLoading: boolean;
-  isRenewInFlight: boolean;
-  lastAttemptAtMs: number;
-  thresholdMs?: number;
-  throttleMs?: number;
-};
-
-export function shouldAttemptSlidingSessionRenew({
-  expiresAtSec,
-  nowMs,
-  isEnabled,
-  isAuthenticated,
-  isLoading,
-  isRenewInFlight,
-  lastAttemptAtMs,
-  thresholdMs = SESSION_RENEW_THRESHOLD_MS,
-  throttleMs = SESSION_RENEW_THROTTLE_MS,
-}: SlidingSessionRenewDecisionParams) {
-  if (!isEnabled || !isAuthenticated || isLoading || isRenewInFlight) {
-    return false;
-  }
-
-  if (typeof expiresAtSec !== "number") {
-    return false;
-  }
-
-  const remainingMs = expiresAtSec * 1000 - nowMs;
-  if (remainingMs <= 0 || remainingMs > thresholdMs) {
-    return false;
-  }
-
-  if (nowMs - lastAttemptAtMs < throttleMs) {
-    return false;
-  }
-
-  return true;
-}
-
-export function shouldAttemptUnlimitedSessionRenew({
-  expiresAtSec,
-  nowMs,
-  isEnabled,
-  isAuthenticated,
-  isLoading,
-  isRenewInFlight,
-  lastAttemptAtMs,
-  thresholdMs = SESSION_RENEW_THRESHOLD_MS,
-  throttleMs = SESSION_RENEW_THROTTLE_MS,
-}: SlidingSessionRenewDecisionParams) {
-  if (isEnabled || !isAuthenticated || isLoading || isRenewInFlight) {
-    return false;
-  }
-
-  if (typeof expiresAtSec !== "number") {
-    return false;
-  }
-
-  const remainingMs = expiresAtSec * 1000 - nowMs;
-  if (remainingMs <= 0 || remainingMs > thresholdMs) {
-    return false;
-  }
-
-  if (nowMs - lastAttemptAtMs < throttleMs) {
-    return false;
-  }
-
-  return true;
-}
+export {
+  DEFAULT_SESSION_RENEW_THROTTLE_MS as SESSION_RENEW_THROTTLE_MS,
+  DEFAULT_SESSION_RENEW_THRESHOLD_MS as SESSION_RENEW_THRESHOLD_MS,
+  shouldAttemptSlidingSessionRenew,
+  shouldAttemptUnlimitedSessionRenew,
+} from "../../../common/core/session";
--- a/devfront/src/lib/utils.ts
+++ b/devfront/src/lib/utils.ts
@@ -1,6 +1,8 @@
 import { type ClassValue, clsx } from "clsx";
 import { twMerge } from "tailwind-merge";

+import { mergeClassNames } from "../../../common/core/utils";
+
 export function cn(...inputs: ClassValue[]) {
-  return twMerge(clsx(inputs));
+  return mergeClassNames(twMerge, [clsx(inputs)]);
 }
--- a/devfront/src/locales/en.toml
+++ b/devfront/src/locales/en.toml
@@ -300,15 +300,6 @@ no_custom = "No custom fields defined for this tenant."
 [msg.admin.users.list.registry]
 count = "Count"

-[msg.common]
-error = "Error"
-loading = "Loading..."
-no_description = "No Description."
-parsing = "Parsing data..."
-requesting = "Requesting..."
-saving = "Saving..."
-unknown_error = "unknown error"
-
 [msg.dev]
 logout_confirm = "Are you sure you want to log out?"

@@ -509,6 +500,7 @@ openid = "Openid"
 profile = "Profile"

 [msg.dev.dashboard]
+description = "View connected application composition and authentication operations metrics in one place."

 [msg.dev.dashboard.hero]
 body = "Body"
@@ -516,6 +508,29 @@ title_emphasis = "Title Emphasis"
 title_prefix = "Title Prefix"
 title_suffix = "Title Suffix"

+[msg.dev.dashboard.distribution]
+description = "Quickly review application types and headless login usage."
+
+[msg.dev.dashboard.chart]
+empty = "No RP usage aggregates to display."
+filter_description = "View the chart for all applications or only the ones you select."
+forbidden = "Your current account does not have permission to view RP usage statistics."
+server_error = "A server error occurred while loading RP usage statistics."
+service_unavailable = "The RP usage aggregation service is not ready yet."
+unavailable = "RP usage statistics API is unavailable. The chart will appear here once aggregate data is ready."
+unavailable_with_reason = "RP usage statistics API is unavailable. {{reason}}"
+
+[msg.dev.dashboard.quick_links]
+audit = "Review RP configuration changes and operational history."
+clients = "Browse registered RPs and manage their status and type."
+description = "Jump directly to key operational screens."
+developer_request = "Review developer access requests or submit a new one."
+new_client = "Configure redirect URIs, grant types, and authentication methods."
+
+[msg.dev.dashboard.recent]
+empty = "Review the relying parties this account can access."
+none = "No connected applications to display."
+
 [msg.dev.dashboard.notice]
 consent_audit = "Consent Audit"
 dev_scope = "Dev Scope"
@@ -1244,75 +1259,6 @@ name = "Name"
 role = "Role"


-[ui.common]
-add = "Add"
-all = "All"
-admin_only = "Admin Only"
-assign = "Assign"
-back = "Back"
-back_to_login = "Back to login"
-cancel = "Cancel"
-change_file = "Change File"
-clear_search = "Clear Search"
-close = "Close"
-collapse = "Collapse"
-confirm = "Confirm"
-copy = "Copy"
-create = "Create"
-delete = "Delete"
-details = "Details"
-disabled = "Disabled"
-edit = "Edit"
-enabled = "Enabled"
-export = "Export"
-fail = "Fail"
-go_home = "Go Home"
-view = "View"
-hyphen = "-"
-manage = "Manage"
-na = "N/A"
-never = "Never"
-next = "Next"
-none = "None"
-page_of = "Page {{page}} of {{total}}"
-prev = "Prev"
-previous = "Previous"
-qr = "QR"
-reset = "Reset"
-read_only = "Read Only"
-refresh = "Refresh"
-remove = "Remove"
-resend = "Resend"
-retry = "Retry"
-save = "Save"
-search = "Search"
-select = "Select"
-select_file = "Select File"
-select_placeholder = "Select Placeholder"
-show_more = "Show More"
-language = "Language"
-language_ko = "Korean"
-language_en = "English"
-success = "Success"
-theme_dark = "Dark"
-theme_light = "Light"
-theme_toggle = "Theme Toggle"
-unknown = "Unknown"
-
-[ui.common.badge]
-admin_only = "Admin only"
-command_only = "Command only"
-system = "System"
-
-[ui.common.status]
-active = "Active"
-blocked = "Blocked"
-failure = "Failure"
-inactive = "Inactive"
-ok = "Ok"
-pending = "Pending"
-success = "Success"
-
 [test]
 key = "Test"

@@ -1330,6 +1276,7 @@ audit_logs = "Audit Logs"
 clients = "Connected Application"
 developer_request = "Developer Access Request"
 logout = "Logout"
+overview = "Overview"

 [ui.dev.audit]
 load_more = "Load more"
@@ -1707,12 +1654,32 @@ private_headless = "Server side App (Headless Login)"

 [ui.dev.dashboard]
 ready_badge = "devfront ready"
+title = "Dashboard"

 [ui.dev.dashboard.badge]
 consent_guard = "Consent guard ready"
+oidc = "OIDC operations"
 policy_toggle = "Policy toggle enabled"
+registry = "RP registry"
 rp_synced = "RP registry synced"

+[ui.dev.dashboard.distribution]
+headless = "Headless Login"
+pkce = "PKCE"
+private = "Server side App"
+title = "Application Distribution"
+
+[ui.dev.dashboard.chart]
+aria = "RP request overview"
+filter_all = "All"
+login_requests = "Login requests"
+other_requests = "Other requests"
+period_day = "Day"
+period_month = "Month"
+period_week = "Week"
+series = "Login {{login}} / Other {{other}} / Users {{subjects}}"
+title = "Login and other requests by application"
+
 [ui.dev.dashboard.next]
 subtitle = "Ship the RP controls"
 title = "Next actions"
@@ -1730,11 +1697,25 @@ rp_requests = "Rp Requests"
 consent = "Consent grants"
 rp_status = "RP status"

+[ui.dev.dashboard.quick_links]
+create_button = "Create RP"
+new_client = "New RP"
+title = "Quick links"
+
+[ui.dev.dashboard.recent]
+title = "My Applications"
+
 [ui.dev.dashboard.stack]
 notes = "Setup notes"
 subtitle = "Devfront baseline"
 title = "Stack readiness"

+[ui.dev.dashboard.summary]
+active_clients = "Active RPs"
+active_sessions = "Active sessions"
+auth_failures_24h = "24h auth failures"
+total_clients = "Total RPs"
+
 [ui.dev.header]
 plane = "Dev Plane"
 subtitle = "Manage your applications"
--- a/devfront/src/locales/ko.toml
+++ b/devfront/src/locales/ko.toml
@@ -300,15 +300,6 @@ no_custom = "이 테넌트에 정의된 커스텀 필드가 없습니다."
 [msg.admin.users.list.registry]
 count = "총 {{count}}명의 사용자가 등록되어 있습니다."

-[msg.common]
-error = "오류가 발생했습니다."
-loading = "로딩 중..."
-no_description = "설명이 없습니다."
-parsing = "데이터 파싱 중..."
-requesting = "요청 중..."
-saving = "저장 중..."
-unknown_error = "알 수 없는 오류"
-
 [msg.dev]
 logout_confirm = "로그아웃 하시겠습니까?"

@@ -509,6 +500,7 @@ openid = "OIDC 인증 필수 스코프"
 profile = "기본 프로필 정보 접근"

 [msg.dev.dashboard]
+description = "연동 앱 구성과 인증 운영 지표를 한 곳에서 확인합니다."

 [msg.dev.dashboard.hero]
 body = "Hydra Admin API와 동기화된 RP 목록, 상태 토글, Consent 회수까지 devfront에서 처리하도록 준비합니다."
@@ -516,6 +508,29 @@ title_emphasis = " 하나의 화면"
 title_prefix = "RP 등록 현황과 Consent 상태를"
 title_suffix = "에서 관리합니다."

+[msg.dev.dashboard.distribution]
+description = "애플리케이션 유형과 headless login 사용 현황을 빠르게 확인합니다."
+
+[msg.dev.dashboard.chart]
+empty = "표시할 RP 이용 집계가 없습니다."
+filter_description = "전체 또는 선택한 애플리케이션만 기준으로 그래프를 확인합니다."
+forbidden = "현재 계정에는 RP 이용 통계를 볼 권한이 없습니다."
+server_error = "RP 이용 통계 조회 중 서버 오류가 발생했습니다."
+service_unavailable = "RP 이용 통계 집계 서비스가 아직 준비되지 않았습니다."
+unavailable = "RP 이용 통계 API 응답을 확인할 수 없습니다. 집계 데이터가 준비되면 이 영역에 그래프가 표시됩니다."
+unavailable_with_reason = "RP 이용 통계 API 응답을 확인할 수 없습니다. {{reason}}"
+
+[msg.dev.dashboard.quick_links]
+audit = "RP 설정 변경과 운영 이력을 확인합니다."
+clients = "등록된 RP를 조회하고 상태와 유형을 관리합니다."
+description = "주요 운영 화면으로 바로 이동합니다."
+developer_request = "개발자 권한 신청 내역을 확인하거나 새 요청을 등록합니다."
+new_client = "redirect URI, grant type, 인증 방식을 설정합니다."
+
+[msg.dev.dashboard.recent]
+empty = "현재 계정이 접근할 수 있는 RP를 확인합니다."
+none = "표시할 연동 앱이 없습니다."
+
 [msg.dev.dashboard.notice]
 consent_audit = "Consent 회수는 감사 로그와 연계"
 dev_scope = "RP 정책은 dev scope에서만 적용"
@@ -1244,75 +1259,6 @@ name = "이름"
 role = "역할"


-[ui.common]
-add = "추가"
-all = "전체"
-admin_only = "관리자 전용"
-assign = "할당"
-back = "돌아가기"
-back_to_login = "로그인으로 돌아가기"
-cancel = "취소"
-change_file = "파일 변경"
-clear_search = "검색 초기화"
-close = "닫기"
-collapse = "접기"
-confirm = "확인"
-copy = "복사"
-create = "생성"
-delete = "삭제"
-details = "상세정보"
-disabled = "사용 안 함"
-edit = "편집"
-enabled = "사용"
-export = "내보내기"
-fail = "실패"
-go_home = "홈으로"
-view = "보기"
-hyphen = "-"
-manage = "관리"
-na = "N/A"
-never = "Never"
-next = "다음"
-none = "없음"
-page_of = "Page {{page}} of {{total}}"
-prev = "이전"
-previous = "이전"
-qr = "QR"
-reset = "초기화"
-read_only = "읽기 전용"
-refresh = "새로고침"
-remove = "제외"
-resend = "재발송"
-retry = "다시 시도"
-save = "저장"
-search = "검색"
-select = "선택"
-select_file = "파일 선택"
-select_placeholder = "선택하세요"
-show_more = "+ 더보기"
-language = "언어"
-language_ko = "한국어"
-language_en = "English"
-success = "성공"
-theme_dark = "Dark"
-theme_light = "Light"
-theme_toggle = "테마 전환"
-unknown = "Unknown"
-
-[ui.common.badge]
-admin_only = "Admin only"
-command_only = "Command only"
-system = "System"
-
-[ui.common.status]
-active = "활성"
-blocked = "차단됨"
-failure = "실패"
-inactive = "비활성"
-ok = "정상"
-pending = "준비 중"
-success = "성공"
-
 [test]
 key = "테스트"

@@ -1330,6 +1276,7 @@ audit_logs = "감사 로그"
 clients = "연동 앱"
 developer_request = "개발자 권한 신청"
 logout = "로그아웃"
+overview = "개요"

 [ui.dev.audit]
 load_more = "더 보기"
@@ -1706,12 +1653,32 @@ private_headless = "Server side App (Headless Login)"

 [ui.dev.dashboard]
 ready_badge = "devfront ready"
+title = "대시보드"

 [ui.dev.dashboard.badge]
 consent_guard = "Consent guard ready"
+oidc = "OIDC 운영"
 policy_toggle = "Policy toggle enabled"
+registry = "RP registry"
 rp_synced = "RP registry synced"

+[ui.dev.dashboard.distribution]
+headless = "Headless Login"
+pkce = "PKCE"
+private = "Server side App"
+title = "애플리케이션 구성 요약"
+
+[ui.dev.dashboard.chart]
+aria = "RP 요청 현황"
+filter_all = "전체"
+login_requests = "로그인 요청"
+other_requests = "기타 요청"
+period_day = "일"
+period_month = "월"
+period_week = "주"
+series = "로그인 {{login}} / 기타 {{other}} / 사용자 {{subjects}}"
+title = "애플리케이션별 로그인요청/기타 요청 현황"
+
 [ui.dev.dashboard.next]
 subtitle = "Ship the RP controls"
 title = "Next actions"
@@ -1729,11 +1696,25 @@ rp_requests = "RP 요청 추이"
 consent = "Consent grants"
 rp_status = "RP status"

+[ui.dev.dashboard.quick_links]
+create_button = "새 RP 만들기"
+new_client = "새 RP 생성"
+title = "빠른 이동"
+
+[ui.dev.dashboard.recent]
+title = "내 애플리케이션"
+
 [ui.dev.dashboard.stack]
 notes = "Setup notes"
 subtitle = "Devfront baseline"
 title = "Stack readiness"

+[ui.dev.dashboard.summary]
+active_clients = "활성 RP 수"
+active_sessions = "활성 세션 수"
+auth_failures_24h = "24시간 인증 실패 수"
+total_clients = "총 RP 수"
+
 [ui.dev.header]
 plane = "Dev Plane"
 subtitle = "Manage your applications"
--- a/devfront/src/locales/template.toml
+++ b/devfront/src/locales/template.toml
@@ -314,15 +314,6 @@ no_custom = ""
 [msg.admin.users.list.registry]
 count = ""

-[msg.common]
-error = ""
-loading = ""
-no_description = ""
-parsing = ""
-requesting = ""
-saving = ""
-unknown_error = ""
-
 [msg.dev]
 logout_confirm = ""

@@ -547,6 +538,7 @@ openid = ""
 profile = ""

 [msg.dev.dashboard]
+description = ""

 [msg.dev.dashboard.hero]
 body = ""
@@ -554,6 +546,29 @@ title_emphasis = ""
 title_prefix = ""
 title_suffix = ""

+[msg.dev.dashboard.distribution]
+description = ""
+
+[msg.dev.dashboard.chart]
+empty = ""
+filter_description = ""
+forbidden = ""
+server_error = ""
+service_unavailable = ""
+unavailable = ""
+unavailable_with_reason = ""
+
+[msg.dev.dashboard.quick_links]
+audit = ""
+clients = ""
+description = ""
+developer_request = ""
+new_client = ""
+
+[msg.dev.dashboard.recent]
+empty = ""
+none = ""
+
 [msg.dev.dashboard.notice]
 consent_audit = ""
 dev_scope = ""
@@ -1297,75 +1312,6 @@ name = ""
 role = ""


-[ui.common]
-add = ""
-all = ""
-admin_only = ""
-assign = ""
-back = ""
-back_to_login = ""
-cancel = ""
-change_file = ""
-clear_search = ""
-close = ""
-collapse = ""
-confirm = ""
-copy = ""
-create = ""
-delete = ""
-details = ""
-disabled = ""
-edit = ""
-enabled = ""
-export = ""
-fail = ""
-go_home = ""
-view = ""
-hyphen = ""
-manage = ""
-na = ""
-never = ""
-next = ""
-none = ""
-page_of = ""
-prev = ""
-previous = ""
-qr = ""
-reset = ""
-read_only = ""
-refresh = ""
-remove = ""
-resend = ""
-retry = ""
-save = ""
-search = ""
-select = ""
-select_file = ""
-select_placeholder = ""
-show_more = ""
-language = ""
-language_ko = ""
-language_en = ""
-success = ""
-theme_dark = ""
-theme_light = ""
-theme_toggle = ""
-unknown = ""
-
-[ui.common.badge]
-admin_only = ""
-command_only = ""
-system = ""
-
-[ui.common.status]
-active = ""
-blocked = ""
-failure = ""
-inactive = ""
-ok = ""
-pending = ""
-success = ""
-
 [test]
 key = ""

@@ -1381,8 +1327,9 @@ scope_badge = ""
 [ui.dev.nav]
 audit_logs = ""
 clients = ""
-logout = ""
 developer_request = ""
+logout = ""
+overview = ""

 [ui.dev.welcome]
 btn_request = ""
@@ -1763,12 +1710,32 @@ private_headless = ""

 [ui.dev.dashboard]
 ready_badge = ""
+title = ""

 [ui.dev.dashboard.badge]
 consent_guard = ""
+oidc = ""
 policy_toggle = ""
+registry = ""
 rp_synced = ""

+[ui.dev.dashboard.distribution]
+headless = ""
+pkce = ""
+private = ""
+title = ""
+
+[ui.dev.dashboard.chart]
+aria = ""
+filter_all = ""
+login_requests = ""
+other_requests = ""
+period_day = ""
+period_month = ""
+period_week = ""
+series = ""
+title = ""
+
 [ui.dev.dashboard.next]
 subtitle = ""
 title = ""
@@ -1786,11 +1753,25 @@ rp_requests = ""
 consent = ""
 rp_status = ""

+[ui.dev.dashboard.quick_links]
+create_button = ""
+new_client = ""
+title = ""
+
+[ui.dev.dashboard.recent]
+title = ""
+
 [ui.dev.dashboard.stack]
 notes = ""
 subtitle = ""
 title = ""

+[ui.dev.dashboard.summary]
+active_clients = ""
+active_sessions = ""
+auth_failures_24h = ""
+total_clients = ""
+
 [ui.dev.header]
 plane = ""
 subtitle = ""
--- a/devfront/tailwind.config.ts
+++ b/devfront/tailwind.config.ts
@@ -3,7 +3,11 @@ import { fontFamily } from "tailwindcss/defaultTheme";

 const config: Config = {
  darkMode: ["class"],
-  content: ["./index.html", "./src/**/*.{ts,tsx}"],
+  content: [
+    "./index.html",
+    "./src/**/*.{ts,tsx}",
+    "../common/**/*.{ts,tsx,css}",
+  ],
  theme: {
    container: {
      center: true,
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -62,6 +62,7 @@ services:
            - "${ADMINFRONT_PORT:-5173}:5173"
        volumes:
            - ./adminfront:/app
+            - ./common:/common
            - ./locales:/locales
            - /app/node_modules
        networks:
@@ -82,6 +83,7 @@ services:
            - "${DEVFRONT_PORT:-5174}:5173"
        volumes:
            - ./devfront:/app
+            - ./common:/common
            - ./locales:/locales
            - /app/node_modules
        networks:
@@ -102,6 +104,7 @@ services:
            - "${ORGFRONT_PORT:-5175}:5175"
        volumes:
            - ./orgfront:/app
+            - ./common:/common
            - ./locales:/locales
            - /app/node_modules
        networks:
--- a/docs/i18n.md
+++ b/docs/i18n.md
@@ -119,14 +119,18 @@ TOML에서는 `[Section]`을 사용하여 계층을 표현합니다.
        ./scripts/sync_userfront_locales.sh
        ```
    *   이 단계가 누락되면 루트 SoT와 UserFront 실제 표시 문구가 어긋날 수 있습니다.
+4.  **React 공통 locale 레이어**:
+    *   React 계열 프런트(`adminfront`, `devfront`, `orgfront`)는 `common/locales/*.toml`을 공통 문구 레이어로 사용합니다.
+    *   공통 key는 `ui.common.*`, `msg.common.*` 범위에만 둡니다.
+    *   각 앱의 `src/locales/*.toml`은 앱 전용 문구를 유지하고, 로딩 시 `common locale -> app locale override` 순서로 merge 합니다.
 3.  **CI 검증 (Verification)**:
    *   **Level 1: 리소스 동기화 검사 (`template` vs `lang`)**
-        *   `template.toml`에 있는 모든 키가 `ko.toml`, `en.toml`에 존재하는지 재귀적으로 검사합니다.
+        *   `locales/*.toml`과 `common/locales/*.toml` 각각에 대해 `template.toml`에 있는 모든 키가 `ko.toml`, `en.toml`에 존재하는지 재귀적으로 검사합니다.
        *   누락 시 빌드 실패.
    *   **Level 2: 코드 사용성 검사 (`code` vs `template`)**
        *   전체 프론트엔드 소스코드(`src/**/*.{ts,tsx}`, `lib/**/*.dart`)를 스캔하여 번역 함수(`t('key')`, `'key'.tr()`)에 사용된 키를 추출합니다.
-        *   **Missing Key**: 코드에는 있는데 `template.toml`에 없는 키를 검출하여 경고 또는 에러를 발생시킵니다.
-        *   **Unused Key**: `template.toml`에는 있는데 코드 어디에서도 쓰이지 않는 키를 리포트하여 정리할 수 있게 합니다.
+        *   **Missing Key**: 코드에는 있는데 해당 레이어의 `template.toml`에 없는 키를 검출하여 경고 또는 에러를 발생시킵니다.
+        *   **Unused Key**: 각 `template.toml`에는 있는데 코드 어디에서도 쓰이지 않는 키를 리포트하여 정리할 수 있게 합니다.

 #### 5.2.3 React (Admin/Dev) 구현 가이드
 *   **패키지 설치**:
--- a/locales/en.toml
+++ b/locales/en.toml
@@ -553,6 +553,7 @@ openid = "Openid"
 profile = "Profile"

 [msg.dev.dashboard]
+description = "Review RP composition and authentication operations in one place."

 [msg.dev.dashboard.hero]
 body = "Monitor RP readiness, consent activity, and operational status for the current developer workspace."
@@ -560,6 +561,21 @@ title_emphasis = "Title Emphasis"
 title_prefix = "Title Prefix"
 title_suffix = "Title Suffix"

+[msg.dev.dashboard.chart]
+empty = "No RP usage aggregates are available."
+filter_description = "View the graph for all apps or only the selected apps."
+forbidden = "This account does not have permission to view RP usage statistics."
+server_error = "A server error occurred while loading RP usage statistics."
+service_unavailable = "The RP usage aggregation service is not ready yet."
+unavailable_with_reason = "RP usage statistics are unavailable. {{reason}}"
+
+[msg.dev.dashboard.distribution]
+description = "Quickly review application types and headless login usage."
+
+[msg.dev.dashboard.recent]
+empty = "Review the RPs this account can access."
+none = "No linked applications are available."
+
 [msg.dev.dashboard.notice]
 consent_audit = "Consent Audit"
 dev_scope = "Dev Scope"
@@ -1141,6 +1157,11 @@ parent_organizations = "Parent Organizations"
 parent_unresolved = "Parent needs review"
 slug_exists = "slug conflict"
 title = "Confirm CSV import"
+csv_parents = "CSV import"
+parent = "Parent"
+parent_companies = "Companies"
+parent_company_groups = "Company groups"
+parent_organizations = "Organizations"

 [ui.admin.tenants.admins]
 add_button = "Add Button"
@@ -1316,6 +1337,8 @@ parent = "Parent Tenant (Optional)"
 parent_help = "Select a parent tenant if this is a subsidiary or sub-organization."

 [ui.admin.tenants.parent]
+company_only = "Companies and groups only"
+search_placeholder = "Search by name or slug"
 local_search_placeholder = "Search tenant name or slug"
 pick_tenant = "Pick tenant"

@@ -2177,12 +2200,32 @@ private = "Server side App"

 [ui.dev.dashboard]
 ready_badge = "devfront ready"
+title = "Dashboard"

 [ui.dev.dashboard.badge]
 consent_guard = "Consent guard ready"
+oidc = "OIDC operations"
 policy_toggle = "Policy toggle enabled"
+registry = "RP registry"
 rp_synced = "RP registry synced"

+[ui.dev.dashboard.distribution]
+headless = "Headless Login"
+pkce = "PKCE"
+private = "Server side App"
+title = "Application Distribution"
+
+[ui.dev.dashboard.chart]
+aria = "RP request overview"
+filter_all = "All"
+login_requests = "Login requests"
+other_requests = "Other requests"
+period_day = "Day"
+period_month = "Month"
+period_week = "Week"
+series = "Login {{login}} / Other {{other}} / Users {{subjects}}"
+title = "Login and other requests by application"
+
 [ui.dev.dashboard.next]
 subtitle = "Ship the RP controls"
 title = "Next actions"
@@ -2200,11 +2243,25 @@ rp_requests = "Rp Requests"
 consent = "Consent grants"
 rp_status = "RP status"

+[ui.dev.dashboard.quick_links]
+create_button = "Create RP"
+new_client = "New RP"
+title = "Quick links"
+
+[ui.dev.dashboard.recent]
+title = "My Applications"
+
 [ui.dev.dashboard.stack]
 notes = "Setup notes"
 subtitle = "Devfront baseline"
 title = "Stack readiness"

+[ui.dev.dashboard.summary]
+active_clients = "Active RPs"
+active_sessions = "Active sessions"
+auth_failures_24h = "24h auth failures"
+total_clients = "Total RPs"
+
 [ui.dev.header]
 plane = "Dev Plane"
 subtitle = "Manage your applications"
--- a/locales/ko.toml
+++ b/locales/ko.toml
@@ -384,6 +384,11 @@ parent_organizations = "상위 조직"
 parent_unresolved = "부모 확인 필요"
 slug_exists = "slug 충돌"
 title = "CSV 가져오기 확인"
+csv_parents = "가져오기 CSV"
+parent = "상위"
+parent_companies = "회사"
+parent_company_groups = "그룹사"
+parent_organizations = "조직"

 [ui.common.badge]
 admin_only = "Admin only"
@@ -1039,6 +1044,7 @@ openid = "OIDC 인증 필수 스코프"
 profile = "기본 프로필 정보 접근"

 [msg.dev.dashboard]
+description = "연동 앱 구성과 인증 운영 지표를 한 곳에서 확인합니다."

 [msg.dev.dashboard.hero]
 body = "Hydra Admin API와 동기화된 RP 목록, 상태 토글, Consent 회수까지 devfront에서 처리하도록 준비합니다."
@@ -1046,6 +1052,21 @@ title_emphasis = " 하나의 화면"
 title_prefix = "RP 등록 현황과 Consent 상태를"
 title_suffix = "에서 관리합니다."

+[msg.dev.dashboard.chart]
+empty = "표시할 RP 이용 집계가 없습니다."
+filter_description = "전체 또는 선택한 애플리케이션만 기준으로 그래프를 확인합니다."
+forbidden = "현재 계정에는 RP 이용 통계를 볼 권한이 없습니다."
+server_error = "RP 이용 통계 조회 중 서버 오류가 발생했습니다."
+service_unavailable = "RP 이용 통계 집계 서비스가 아직 준비되지 않았습니다."
+unavailable_with_reason = "RP 이용 통계 API 응답을 확인할 수 없습니다. {{reason}}"
+
+[msg.dev.dashboard.distribution]
+description = "애플리케이션 유형과 headless login 사용 현황을 빠르게 확인합니다."
+
+[msg.dev.dashboard.recent]
+empty = "현재 계정이 접근할 수 있는 RP를 확인합니다."
+none = "표시할 연동 앱이 없습니다."
+
 [msg.dev.dashboard.notice]
 consent_audit = "Consent 회수는 감사 로그와 연계"
 dev_scope = "RP 정책은 dev scope에서만 적용"
@@ -1778,6 +1799,8 @@ parent = "상위 테넌트 (선택)"
 parent_help = "가족사 테넌트나 하위 조직을 종속시킬 경우 상위 테넌트를 선택해주세요."

 [ui.admin.tenants.parent]
+company_only = "회사/그룹사만 표시"
+search_placeholder = "이름 또는 slug 검색"
 local_search_placeholder = "테넌트 이름 또는 슬러그 검색"
 pick_tenant = "테넌트 선택"

@@ -2639,12 +2662,32 @@ private = "Server side App"

 [ui.dev.dashboard]
 ready_badge = "devfront ready"
+title = "대시보드"

 [ui.dev.dashboard.badge]
 consent_guard = "Consent guard ready"
+oidc = "OIDC 운영"
 policy_toggle = "Policy toggle enabled"
+registry = "RP registry"
 rp_synced = "RP registry synced"

+[ui.dev.dashboard.distribution]
+headless = "Headless Login"
+pkce = "PKCE"
+private = "Server side App"
+title = "애플리케이션 구성 요약"
+
+[ui.dev.dashboard.chart]
+aria = "RP 요청 현황"
+filter_all = "전체"
+login_requests = "로그인 요청"
+other_requests = "기타 요청"
+period_day = "일"
+period_month = "월"
+period_week = "주"
+series = "로그인 {{login}} / 기타 {{other}} / 사용자 {{subjects}}"
+title = "애플리케이션별 로그인요청/기타 요청 현황"
+
 [ui.dev.dashboard.next]
 subtitle = "Ship the RP controls"
 title = "Next actions"
@@ -2662,11 +2705,25 @@ rp_requests = "RP 요청 추이"
 consent = "Consent grants"
 rp_status = "RP status"

+[ui.dev.dashboard.quick_links]
+create_button = "새 RP 만들기"
+new_client = "새 RP 생성"
+title = "빠른 이동"
+
+[ui.dev.dashboard.recent]
+title = "내 애플리케이션"
+
 [ui.dev.dashboard.stack]
 notes = "Setup notes"
 subtitle = "Devfront baseline"
 title = "Stack readiness"

+[ui.dev.dashboard.summary]
+active_clients = "활성 RP 수"
+active_sessions = "활성 세션 수"
+auth_failures_24h = "24시간 인증 실패 수"
+total_clients = "총 RP 수"
+
 [ui.dev.header]
 plane = "Dev Plane"
 subtitle = "Manage your applications"
--- a/locales/template.toml
+++ b/locales/template.toml
@@ -248,6 +248,11 @@ parent_organizations = ""
 parent_unresolved = ""
 slug_exists = ""
 title = ""
+csv_parents = ""
+parent = ""
+parent_companies = ""
+parent_company_groups = ""
+parent_organizations = ""

 [ui.common.badge]
 admin_only = ""
@@ -903,6 +908,7 @@ openid = ""
 profile = ""

 [msg.dev.dashboard]
+description = ""

 [msg.dev.dashboard.hero]
 body = ""
@@ -910,6 +916,21 @@ title_emphasis = ""
 title_prefix = ""
 title_suffix = ""

+[msg.dev.dashboard.chart]
+empty = ""
+filter_description = ""
+forbidden = ""
+server_error = ""
+service_unavailable = ""
+unavailable_with_reason = ""
+
+[msg.dev.dashboard.distribution]
+description = ""
+
+[msg.dev.dashboard.recent]
+empty = ""
+none = ""
+
 [msg.dev.dashboard.notice]
 consent_audit = ""
 dev_scope = ""
@@ -1643,6 +1664,8 @@ parent = ""
 parent_help = ""

 [ui.admin.tenants.parent]
+company_only = ""
+search_placeholder = ""
 local_search_placeholder = ""
 pick_tenant = ""

@@ -2518,12 +2541,32 @@ private = ""

 [ui.dev.dashboard]
 ready_badge = ""
+title = ""

 [ui.dev.dashboard.badge]
 consent_guard = ""
+oidc = ""
 policy_toggle = ""
+registry = ""
 rp_synced = ""

+[ui.dev.dashboard.distribution]
+headless = ""
+pkce = ""
+private = ""
+title = ""
+
+[ui.dev.dashboard.chart]
+aria = ""
+filter_all = ""
+login_requests = ""
+other_requests = ""
+period_day = ""
+period_month = ""
+period_week = ""
+series = ""
+title = ""
+
 [ui.dev.dashboard.next]
 subtitle = ""
 title = ""
@@ -2541,11 +2584,25 @@ rp_requests = ""
 consent = ""
 rp_status = ""

+[ui.dev.dashboard.quick_links]
+create_button = ""
+new_client = ""
+title = ""
+
+[ui.dev.dashboard.recent]
+title = ""
+
 [ui.dev.dashboard.stack]
 notes = ""
 subtitle = ""
 title = ""

+[ui.dev.dashboard.summary]
+active_clients = ""
+active_sessions = ""
+auth_failures_24h = ""
+total_clients = ""
+
 [ui.dev.header]
 plane = ""
 subtitle = ""
--- a/orgfront/src/app/queryClient.ts
+++ b/orgfront/src/app/queryClient.ts
@@ -1,11 +1,7 @@
 import { QueryClient } from "@tanstack/react-query";

+import { queryClientDefaultOptions } from "../../../common/core/query/queryClient";
+
 export const queryClient = new QueryClient({
-  defaultOptions: {
-    queries: {
-      staleTime: 30_000,
-      refetchOnWindowFocus: false,
-      retry: 1,
-    },
-  },
+  defaultOptions: queryClientDefaultOptions,
 });
--- a/orgfront/src/components/layout/AppLayout.tsx
+++ b/orgfront/src/components/layout/AppLayout.tsx
@@ -19,6 +19,15 @@ import {
  shouldAttemptSlidingSessionRenew,
  shouldAttemptUnlimitedSessionRenew,
 } from "../../lib/sessionSliding";
+import {
+  applyShellTheme,
+  buildShellProfileSummary,
+  buildShellSessionStatus,
+  readShellSessionExpiryEnabled,
+  readShellTheme,
+  shellLayoutClasses,
+  writeShellSessionExpiryEnabled,
+} from "../../../../common/shell";
 import LanguageSelector from "../common/LanguageSelector";
 import { Toaster } from "../ui/toaster";

@@ -45,15 +54,11 @@ function AppLayout() {
  const isRenewInFlightRef = useRef(false);
  const lastRenewAttemptAtRef = useRef(0);
  const lastVisitedRouteRef = useRef<string | null>(null);
-  const [theme, setTheme] = useState<"light" | "dark">(() => {
-    const stored = window.localStorage.getItem("admin_theme");
-    return stored === "dark" ? "dark" : "light";
-  });
+  const [theme, setTheme] = useState<"light" | "dark">(readShellTheme);
  const [isProfileMenuOpen, setIsProfileMenuOpen] = useState(false);
-  const [isSessionExpiryEnabled, setIsSessionExpiryEnabled] = useState(() => {
-    const stored = window.localStorage.getItem("baron_session_expiry_enabled");
-    return stored !== "false";
-  });
+  const [isSessionExpiryEnabled, setIsSessionExpiryEnabled] = useState(
+    readShellSessionExpiryEnabled,
+  );
  const [nowMs, setNowMs] = useState(() => Date.now());

  const hasAccessToken = Boolean(auth.user?.access_token);
@@ -71,14 +76,7 @@ function AppLayout() {
  };

  useEffect(() => {
-    const root = document.documentElement;
-    root.classList.remove("light", "dark");
-    if (theme === "light") {
-      root.classList.add("light");
-    } else {
-      root.classList.add("dark");
-    }
-    window.localStorage.setItem("admin_theme", theme);
+    applyShellTheme(theme);
  }, [theme]);

  useEffect(() => {
@@ -254,17 +252,16 @@ function AppLayout() {
    setTheme((prev) => (prev === "light" ? "dark" : "light"));
  };

-  const profileName =
-    profile?.name?.trim() ||
-    auth.user?.profile?.name?.toString().trim() ||
-    auth.user?.profile?.preferred_username?.toString().trim() ||
-    auth.user?.profile?.nickname?.toString().trim() ||
-    t("ui.dev.profile.unknown_name", "Unknown User");
-  const profileEmail =
-    profile?.email?.trim() ||
-    auth.user?.profile?.email?.toString().trim() ||
-    t("ui.dev.profile.unknown_email", "unknown@example.com");
-  const profileInitial = profileName.charAt(0).toUpperCase();
+  const profileSummary = buildShellProfileSummary({
+    profileName:
+      profile?.name ||
+      auth.user?.profile?.name?.toString() ||
+      auth.user?.profile?.preferred_username?.toString() ||
+      auth.user?.profile?.nickname?.toString(),
+    profileEmail: profile?.email || auth.user?.profile?.email?.toString(),
+    fallbackName: t("ui.dev.profile.unknown_name", "Unknown User"),
+    fallbackEmail: t("ui.dev.profile.unknown_email", "unknown@example.com"),
+  });
  const currentRole = resolveProfileRole(
    auth.user?.profile as Record<string, unknown> | undefined,
  );
@@ -275,68 +272,27 @@ function AppLayout() {
    "tenant_admin",
    "rp_admin",
  ].includes(currentRole);
-  const expiresAtSec = auth.user?.expires_at;
-  const remainingMs =
-    typeof expiresAtSec === "number" ? expiresAtSec * 1000 - nowMs : null;
-  const remainingTotalSec =
-    remainingMs !== null ? Math.max(0, Math.floor(remainingMs / 1000)) : null;
-  const remainingMinutes =
-    remainingTotalSec !== null ? Math.floor(remainingTotalSec / 60) : null;
-  const remainingSeconds =
-    remainingTotalSec !== null ? remainingTotalSec % 60 : null;
-
-  let sessionToneClass =
-    "border-emerald-500/30 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300";
-  let sessionText = t("ui.dev.session.active", "세션 활성");
-
-  if (remainingMs === null) {
-    sessionToneClass = "border-border bg-card text-muted-foreground";
-    sessionText = t("ui.dev.session.unknown", "알 수 없음");
-  } else if (remainingMs <= 0) {
-    sessionToneClass =
-      "border-rose-500/30 bg-rose-500/10 text-rose-700 dark:text-rose-300";
-    sessionText = t("ui.dev.session.expired", "세션 만료");
-  } else if (
-    remainingMinutes !== null &&
-    remainingSeconds !== null &&
-    remainingMinutes <= 5
-  ) {
-    sessionToneClass =
-      "border-amber-500/30 bg-amber-500/10 text-amber-700 dark:text-amber-300";
-    sessionText = t(
-      "ui.dev.session.expiring",
-      "만료 임박: {{minutes}}분 {{seconds}}초 남음",
-      {
-        minutes: remainingMinutes,
-        seconds: remainingSeconds,
-      },
-    );
-  } else {
-    sessionText = t(
-      "ui.dev.session.remaining",
-      "만료 예정: {{minutes}}분 {{seconds}}초 남음",
-      {
-        minutes: remainingMinutes ?? 0,
-        seconds: remainingSeconds ?? 0,
-      },
-    );
-  }
+  const sessionStatus = buildShellSessionStatus({
+    expiresAtSec: auth.user?.expires_at,
+    nowMs,
+    t,
+  });

  const handleSessionExpiryToggle = () => {
    setIsSessionExpiryEnabled((prev) => {
      const next = !prev;
-      window.localStorage.setItem("baron_session_expiry_enabled", String(next));
+      writeShellSessionExpiryEnabled(next);
      return next;
    });
  };

  return (
-    <div className="grid min-h-screen bg-background text-foreground md:grid-cols-[240px,1fr]">
-      <aside className="flex flex-col justify-between border-b border-border bg-card md:sticky md:top-0 md:h-screen md:border-b-0 md:border-r md:bg-card md:backdrop-blur">
+    <div className={shellLayoutClasses.root}>
+      <aside className={shellLayoutClasses.aside}>
        <div>
-          <div className="flex items-center justify-between px-5 py-4 md:block md:space-y-6 md:py-6">
-            <div className="flex items-center gap-3 md:flex-col md:items-start">
-              <div className="grid h-11 w-11 place-items-center rounded-xl bg-primary/15 text-primary shadow-[0_12px_30px_rgba(54,211,153,0.22)]">
+          <div className={shellLayoutClasses.brandSection}>
+            <div className={shellLayoutClasses.brandWrap}>
+              <div className={shellLayoutClasses.brandIcon}>
                <ShieldHalf size={20} />
              </div>
              <div>
@@ -348,18 +304,18 @@ function AppLayout() {
                </h1>
              </div>
            </div>
-            <div className="hidden rounded-full border border-border px-3 py-2 text-xs text-muted-foreground md:inline-flex md:items-center md:gap-2">
+            <div className={shellLayoutClasses.scopeBadge}>
              <BadgeCheck size={14} />
              {t("ui.dev.scope_badge", "Scoped to /dev")}
            </div>
          </div>
-          <nav className="px-2 pb-4 md:px-3 md:pb-8">
-            <div className="flex flex-wrap gap-2 px-3 pb-4 text-[11px] text-muted-foreground md:flex-col md:items-start">
+          <nav className={shellLayoutClasses.navWrap}>
+            <div className={shellLayoutClasses.navMeta}>
              <span className="rounded-full border border-border px-3 py-1">
                {t("ui.dev.env_badge", "Env: dev")}
              </span>
            </div>
-            <div className="flex flex-col gap-1">
+            <div className={shellLayoutClasses.navList}>
              {isDevConsoleAllowed &&
                navItems.map(({ labelKey, labelFallback, to, icon: Icon }) => (
                  <NavLink
@@ -367,10 +323,10 @@ function AppLayout() {
                    to={to}
                    className={({ isActive }) =>
                      [
-                        "flex items-center gap-3 rounded-xl px-3 py-3 text-sm transition",
+                        shellLayoutClasses.navItemBase,
                        isActive
-                          ? "bg-primary/10 text-primary shadow-[0_12px_40px_rgba(54,211,153,0.18)]"
-                          : "text-muted-foreground hover:bg-muted/10 hover:text-foreground",
+                          ? shellLayoutClasses.navItemActive
+                          : shellLayoutClasses.navItemIdle,
                      ].join(" ")
                    }
                  >
@@ -387,13 +343,13 @@ function AppLayout() {
            <button
              type="button"
              onClick={handleLogout}
-              className="flex w-full items-center gap-3 rounded-xl px-3 py-3 text-sm text-muted-foreground transition hover:bg-destructive/10 hover:text-destructive"
+              className={shellLayoutClasses.logoutButton}
            >
              <LogOut size={18} />
              <span>{t("ui.dev.nav.logout", "Logout")}</span>
            </button>
          </div>
-          <div className="hidden space-y-2 px-5 pb-6 pt-2 text-xs text-[var(--color-muted)] md:block">
+          <div className={shellLayoutClasses.sidebarFooterNotice}>
            <p>{t("msg.dev.sidebar.notice", "Developer Console")}</p>
            <p>
              {t(
@@ -405,10 +361,10 @@ function AppLayout() {
        </div>
      </aside>

-      <div className="relative">
-        <header className="sticky top-0 z-20 border-b border-border bg-background/90 backdrop-blur">
-          <div className="flex items-center justify-between px-5 py-4 md:px-8">
-            <div className="flex flex-col gap-1">
+      <div className={shellLayoutClasses.content}>
+        <header className={shellLayoutClasses.header}>
+          <div className={shellLayoutClasses.headerInner}>
+            <div className={shellLayoutClasses.headerTitleWrap}>
              <p className="text-xs uppercase tracking-[0.22em] text-muted-foreground">
                {t("ui.dev.header.plane", "Dev Plane")}
              </p>
@@ -416,12 +372,12 @@ function AppLayout() {
                {t("ui.dev.header.subtitle", "Manage your applications")}
              </span>
            </div>
-            <div className="flex items-center gap-2 text-sm">
+            <div className={shellLayoutClasses.headerActions}>
              <LanguageSelector />
              <button
                type="button"
                onClick={toggleTheme}
-                className="inline-flex items-center gap-2 rounded-full border border-border px-3 py-2 text-muted-foreground transition hover:bg-muted/20"
+                className={shellLayoutClasses.actionButton}
                aria-label={t("ui.common.theme_toggle", "테마 전환")}
              >
                {theme === "light" ? <Sun size={16} /> : <Moon size={16} />}
@@ -432,11 +388,11 @@ function AppLayout() {
              {isSessionExpiryEnabled ? (
                <span
                  className={[
-                    "hidden rounded-full border px-3 py-2 text-xs font-medium md:inline-flex",
-                    sessionToneClass,
+                    shellLayoutClasses.sessionBadge,
+                    sessionStatus.toneClass,
                  ].join(" ")}
                >
-                  {sessionText}
+                  {sessionStatus.text}
                </span>
              ) : null}
              <div className="relative" ref={profileMenuRef}>
@@ -448,15 +404,15 @@ function AppLayout() {
                  aria-expanded={isProfileMenuOpen}
                  aria-label={t("ui.dev.profile.menu_aria", "계정 메뉴 열기")}
                >
-                  <div className="grid h-8 w-8 place-items-center rounded-full bg-primary/15 text-xs font-semibold text-primary">
-                    {profileInitial}
+                  <div className={shellLayoutClasses.profileInitial}>
+                    {profileSummary.initial}
                  </div>
                  <div className="hidden min-w-0 text-left md:block">
                    <p className="truncate text-xs font-medium text-foreground">
-                      {profileName}
+                      {profileSummary.name}
                    </p>
                    <p className="truncate text-[11px] text-muted-foreground">
-                      {profileEmail}
+                      {profileSummary.email}
                    </p>
                  </div>
                  <ChevronDown
@@ -465,20 +421,17 @@ function AppLayout() {
                  />
                </button>
                {isProfileMenuOpen ? (
-                  <div
-                    role="menu"
-                    className="absolute right-0 z-30 mt-2 w-72 rounded-xl border border-border bg-card p-3 shadow-xl"
-                  >
+                  <div role="menu" className={shellLayoutClasses.profileMenu}>
                    <p className="text-xs uppercase tracking-[0.16em] text-muted-foreground">
                      {t("ui.dev.profile.menu_title", "Account")}
                    </p>
-                    <div className="mt-2 flex flex-col gap-2 rounded-lg border border-border px-3 py-3">
+                    <div className={shellLayoutClasses.profileCard}>
                      <div>
                        <p className="truncate text-sm font-semibold text-foreground">
-                          {profileName}
+                          {profileSummary.name}
                        </p>
                        <p className="truncate text-xs text-muted-foreground">
-                          {profileEmail}
+                          {profileSummary.email}
                        </p>
                      </div>
                      <div className="flex items-center pt-1">
@@ -491,7 +444,7 @@ function AppLayout() {
                      </div>
                    </div>

-                    <div className="mt-2 rounded-lg border border-border px-3 py-3">
+                    <div className={shellLayoutClasses.settingsCard}>
                      <div className="flex items-center justify-between gap-3">
                        <div>
                          <p className="text-sm font-medium text-foreground">
@@ -499,7 +452,7 @@ function AppLayout() {
                          </p>
                          <p className="text-xs text-muted-foreground">
                            {isSessionExpiryEnabled
-                              ? sessionText
+                              ? sessionStatus.text
                              : t(
                                  "ui.dev.session.disabled",
                                  "세션 만료 비활성화",
@@ -555,7 +508,7 @@ function AppLayout() {
            </div>
          </div>
        </header>
-        <main className="px-5 py-6 md:px-10 md:py-10">
+        <main className={shellLayoutClasses.main}>
          <Outlet />
        </main>
      </div>
--- a/orgfront/src/components/ui/badge.tsx
+++ b/orgfront/src/components/ui/badge.tsx
@@ -1,39 +1,21 @@
-import { type VariantProps, cva } from "class-variance-authority";
 import type * as React from "react";
+import {
+  type CommonBadgeVariant,
+  getCommonBadgeClasses,
+} from "../../../../common/ui/badge";
 import { cn } from "../../lib/utils";

-const badgeVariants = cva(
-  "inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",
-  {
-    variants: {
-      variant: {
-        default:
-          "border-transparent bg-primary text-primary-foreground shadow hover:bg-primary/90",
-        secondary:
-          "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80",
-        outline: "text-foreground",
-        muted: "border-border bg-secondary/60 text-muted-foreground",
-        success:
-          "border-transparent bg-emerald-100 text-emerald-700 dark:bg-emerald-900/40 dark:text-emerald-300",
-        warning:
-          "border-transparent bg-amber-100 text-amber-700 dark:bg-amber-900/40 dark:text-amber-200",
-        info: "border-transparent bg-blue-500 text-white hover:bg-blue-500/90",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-    },
-  },
-);
-
-export interface BadgeProps
-  extends React.HTMLAttributes<HTMLDivElement>,
-    VariantProps<typeof badgeVariants> {}
+export interface BadgeProps extends React.HTMLAttributes<HTMLDivElement> {
+  variant?: CommonBadgeVariant;
+}

 function Badge({ className, variant, ...props }: BadgeProps) {
  return (
-    <div className={cn(badgeVariants({ variant }), className)} {...props} />
+    <div
+      className={cn(getCommonBadgeClasses({ variant }), className)}
+      {...props}
+    />
  );
 }

-export { Badge, badgeVariants };
+export { Badge };
--- a/orgfront/src/components/ui/button.tsx
+++ b/orgfront/src/components/ui/button.tsx
@@ -1,41 +1,16 @@
 import { Slot } from "@radix-ui/react-slot";
-import { type VariantProps, cva } from "class-variance-authority";
 import * as React from "react";
+import {
+  type CommonButtonSize,
+  type CommonButtonVariant,
+  getCommonButtonClasses,
+} from "../../../../common/ui/button";
 import { cn } from "../../lib/utils";

-const buttonVariants = cva(
-  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-semibold transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 ring-offset-background",
-  {
-    variants: {
-      variant: {
-        default:
-          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
-        secondary:
-          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
-        outline:
-          "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
-        ghost: "hover:bg-accent hover:text-accent-foreground",
-        destructive:
-          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
-        muted: "bg-muted text-muted-foreground hover:bg-muted/80",
-      },
-      size: {
-        default: "h-10 px-4 py-2",
-        sm: "h-9 rounded-md px-3",
-        lg: "h-11 rounded-md px-6 text-base",
-        icon: "h-10 w-10",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-      size: "default",
-    },
-  },
-);
-
 export interface ButtonProps
-  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
-    VariantProps<typeof buttonVariants> {
+  extends React.ButtonHTMLAttributes<HTMLButtonElement> {
+  variant?: CommonButtonVariant;
+  size?: CommonButtonSize;
  asChild?: boolean;
 }

@@ -44,7 +19,7 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
    const Comp = asChild ? Slot : "button";
    return (
      <Comp
-        className={cn(buttonVariants({ variant, size, className }))}
+        className={cn(getCommonButtonClasses({ variant, size }), className)}
        ref={ref}
        {...props}
      />
@@ -53,4 +28,4 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
 );
 Button.displayName = "Button";

-export { Button, buttonVariants };
+export { Button };
--- a/orgfront/src/components/ui/card.tsx
+++ b/orgfront/src/components/ui/card.tsx
@@ -1,65 +1,51 @@
 import type * as React from "react";
+import {
+  commonCardClass,
+  commonCardContentClass,
+  commonCardDescriptionClass,
+  commonCardFooterClass,
+  commonCardHeaderClass,
+  commonCardTitleClass,
+} from "../../../../common/ui/card";
 import { cn } from "../../lib/utils";

 function Card({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div
-      className={cn(
-        "rounded-2xl border border-border bg-card/90 text-card-foreground shadow-card",
-        className,
-      )}
-      {...props}
-    />
-  );
+  return <div className={cn(commonCardClass, className)} {...props} />;
 }

 function CardHeader({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div
-      className={cn("flex flex-col space-y-1.5 p-6", className)}
-      {...props}
-    />
-  );
+  return <div className={cn(commonCardHeaderClass, className)} {...props} />;
 }

 function CardTitle({
  className,
  ...props
 }: React.HTMLAttributes<HTMLHeadingElement>) {
-  return (
-    <h3
-      className={cn("text-lg font-semibold leading-none", className)}
-      {...props}
-    />
-  );
+  return <h3 className={cn(commonCardTitleClass, className)} {...props} />;
 }

 function CardDescription({
  className,
  ...props
 }: React.HTMLAttributes<HTMLParagraphElement>) {
-  return (
-    <p className={cn("text-sm text-muted-foreground", className)} {...props} />
-  );
+  return <p className={cn(commonCardDescriptionClass, className)} {...props} />;
 }

 function CardContent({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return <div className={cn("p-6 pt-0", className)} {...props} />;
+  return <div className={cn(commonCardContentClass, className)} {...props} />;
 }

 function CardFooter({
  className,
  ...props
 }: React.HTMLAttributes<HTMLDivElement>) {
-  return (
-    <div className={cn("flex items-center p-6 pt-0", className)} {...props} />
-  );
+  return <div className={cn(commonCardFooterClass, className)} {...props} />;
 }

 export {
--- a/orgfront/src/components/ui/input.tsx
+++ b/orgfront/src/components/ui/input.tsx
@@ -1,4 +1,5 @@
 import * as React from "react";
+import { commonInputClass } from "../../../../common/ui/input";
 import { cn } from "../../lib/utils";

 export interface InputProps
@@ -9,10 +10,7 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(
    return (
      <input
        type={type}
-        className={cn(
-          "flex h-10 w-full rounded-lg border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
-          className,
-        )}
+        className={cn(commonInputClass, className)}
        ref={ref}
        {...props}
      />
--- a/orgfront/src/index.css
+++ b/orgfront/src/index.css
@@ -1,3 +1,5 @@
+@import "../../common/theme/base.css";
+
@tailwind base;
@tailwind components;
@tailwind utilities;
@@ -24,72 +26,10 @@
    --input: 220 17% 90%;
    --ring: 209 79% 52%;
    --radius: 0.75rem;
-  }
-
-  .light {
-    --background: 0 0% 98%;
-    --foreground: 223 25% 12%;
-    --card: 0 0% 100%;
-    --card-foreground: 223 25% 12%;
-    --popover: 0 0% 100%;
-    --popover-foreground: 223 25% 12%;
-    --primary: 209 79% 52%;
-    --primary-foreground: 0 0% 100%;
-    --secondary: 220 17% 94%;
-    --secondary-foreground: 223 25% 20%;
-    --muted: 223 15% 45%;
-    --muted-foreground: 223 15% 45%;
-    --accent: 40 96% 62%;
-    --accent-foreground: 223 25% 12%;
-    --destructive: 0 84% 60%;
-    --destructive-foreground: 0 0% 100%;
-    --border: 220 17% 90%;
-    --input: 220 17% 90%;
-    --ring: 209 79% 52%;
-  }
-
-  .dark {
-    --background: 210 25% 6%;
-    --foreground: 210 35% 96%;
-    --card: 215 32% 9%;
-    --card-foreground: 210 35% 96%;
-    --popover: 215 32% 9%;
-    --popover-foreground: 210 35% 96%;
-    --primary: 209 79% 52%;
-    --primary-foreground: 210 35% 96%;
-    --secondary: 215 25% 16%;
-    --secondary-foreground: 210 35% 96%;
-    --muted: 215 15% 65%;
-    --muted-foreground: 215 15% 65%;
-    --accent: 42 95% 57%;
-    --accent-foreground: 215 25% 10%;
-    --destructive: 0 84% 60%;
-    --destructive-foreground: 210 35% 96%;
-    --border: 215 25% 24%;
-    --input: 215 25% 24%;
-    --ring: 209 79% 52%;
-  }
-
-  * {
-    @apply border-border;
-  }
-
-  body {
-    @apply min-h-screen bg-background font-sans text-foreground antialiased;
-    background-image: linear-gradient(
+    --app-background-image: linear-gradient(
      180deg,
      hsl(var(--background)) 0%,
      hsl(var(--secondary) / 0.35) 100%
    );
  }
-
-  a {
-    @apply text-inherit no-underline;
-  }
-}
-
-@layer components {
-  .glass-panel {
-    @apply rounded-2xl border border-border bg-card/85 shadow-card backdrop-blur;
-  }
 }
--- a/orgfront/src/lib/auth.ts
+++ b/orgfront/src/lib/auth.ts
@@ -1,33 +1,24 @@
 import { UserManager, WebStorageStateStore } from "oidc-client-ts";
 import type { AuthProviderProps } from "react-oidc-context";
 import {
-  buildOrgFrontAuthRedirectUris,
-  resolveOrgFrontPublicOrigin,
-} from "./authConfig";
+  buildCommonOidcRuntimeConfig,
+  buildCommonUserManagerSettings,
+} from "../../../common/core/auth";
+import { resolveOrgFrontPublicOrigin } from "./authConfig";

 const orgFrontPublicOrigin = resolveOrgFrontPublicOrigin(
  import.meta.env.VITE_ORGFRONT_PUBLIC_URL,
  window.location.origin,
 );
-const orgFrontRedirectUris =
-  buildOrgFrontAuthRedirectUris(orgFrontPublicOrigin);

-export const oidcConfig: AuthProviderProps = {
+export const oidcConfig: AuthProviderProps = buildCommonOidcRuntimeConfig({
  authority:
-    import.meta.env.VITE_OIDC_AUTHORITY || "http://localhost:5000/oidc", // Gateway Proxy URL
-  client_id: import.meta.env.VITE_OIDC_CLIENT_ID || "orgfront",
-  redirect_uri: orgFrontRedirectUris.redirectUri,
-  response_type: "code",
-  scope: "openid offline_access profile email", // offline_access for refresh token
-  post_logout_redirect_uri: orgFrontRedirectUris.postLogoutRedirectUri,
-  popup_redirect_uri: orgFrontRedirectUris.popupRedirectUri,
+    import.meta.env.VITE_OIDC_AUTHORITY || "http://localhost:5000/oidc",
+  clientId: import.meta.env.VITE_OIDC_CLIENT_ID || "orgfront",
+  origin: orgFrontPublicOrigin,
  userStore: new WebStorageStateStore({ store: window.localStorage }),
-  automaticSilentRenew: false,
-};
-
-export const userManager = new UserManager({
-  ...oidcConfig,
-  authority: oidcConfig.authority || "",
-  client_id: oidcConfig.client_id || "",
-  redirect_uri: oidcConfig.redirect_uri || "",
 });
+
+export const userManager = new UserManager(
+  buildCommonUserManagerSettings(oidcConfig),
+);
--- a/orgfront/src/lib/i18n.ts
+++ b/orgfront/src/lib/i18n.ts
@@ -1,148 +1,16 @@
-const LOCALE_STORAGE_KEY = "locale";
-const DEFAULT_LOCALE = "ko";
-const SUPPORTED_LOCALES = ["ko", "en"] as const;
-
-type Locale = (typeof SUPPORTED_LOCALES)[number];
-
-type TomlValue = string | TomlObject;
-
-interface TomlObject {
-  [key: string]: TomlValue;
-}
-
-function isSupportedLocale(value: string): value is Locale {
-  return (SUPPORTED_LOCALES as readonly string[]).includes(value);
-}
-
-function parseToml(raw: string): TomlObject {
-  const lines = raw.split(/\r?\n/);
-  const root: TomlObject = {};
-  let currentPath: string[] = [];
-
-  for (const rawLine of lines) {
-    const line = rawLine.trim();
-    if (!line || line.startsWith("#")) {
-      continue;
-    }
-
-    if (line.startsWith("[") && line.endsWith("]")) {
-      const sectionName = line.slice(1, -1).trim();
-      currentPath = sectionName
-        ? sectionName
-            .split(".")
-            .map((part) => part.trim())
-            .filter(Boolean)
-        : [];
-      continue;
-    }
-
-    const eqIndex = line.indexOf("=");
-    if (eqIndex === -1) {
-      continue;
-    }
-
-    const key = line.slice(0, eqIndex).trim();
-    const valueRaw = line.slice(eqIndex + 1).trim();
-    if (!key) {
-      continue;
-    }
-
-    let value = valueRaw;
-    if (
-      (value.startsWith('"') && value.endsWith('"')) ||
-      (value.startsWith("'") && value.endsWith("'"))
-    ) {
-      value = value.slice(1, -1);
-    }
-
-    let cursor: TomlObject = root;
-    for (const section of currentPath) {
-      if (!cursor[section] || typeof cursor[section] === "string") {
-        cursor[section] = {};
-      }
-      cursor = cursor[section] as TomlObject;
-    }
-
-    cursor[key] = value;
-  }
-
-  return root;
-}
-
-function getValue(target: TomlObject, key: string): string | undefined {
-  const parts = key.split(".");
-  let cursor: TomlValue = target;
-  for (const part of parts) {
-    if (typeof cursor !== "object" || cursor === null) {
-      return undefined;
-    }
-    cursor = (cursor as TomlObject)[part];
-    if (cursor === undefined) {
-      return undefined;
-    }
-  }
-  return typeof cursor === "string" ? cursor : undefined;
-}
-
-function detectLocale(): Locale {
-  if (typeof window === "undefined") {
-    return DEFAULT_LOCALE;
-  }
-
-  const stored = window.localStorage.getItem(LOCALE_STORAGE_KEY);
-  if (stored && isSupportedLocale(stored)) {
-    return stored;
-  }
-
-  const pathLocale = window.location.pathname.split("/")[1];
-  if (pathLocale && isSupportedLocale(pathLocale)) {
-    return pathLocale;
-  }
-
-  const browserLang = window.navigator.language.toLowerCase();
-  if (browserLang.startsWith("ko")) {
-    return "ko";
-  }
-
-  return DEFAULT_LOCALE;
-}
+import { createTomlTranslator } from "../../../common/core/i18n";

+// eslint-disable-next-line import/no-unresolved
+import commonEnRaw from "../../../common/locales/en.toml?raw";
+// eslint-disable-next-line import/no-unresolved
+import commonKoRaw from "../../../common/locales/ko.toml?raw";
 // eslint-disable-next-line import/no-unresolved
 import enRaw from "../locales/en.toml?raw";
 // Vite ?raw import는 런타임 상수로 번들됩니다.
 // eslint-disable-next-line import/no-unresolved
 import koRaw from "../locales/ko.toml?raw";

-const translations: Record<Locale, TomlObject> = {
-  ko: parseToml(koRaw),
-  en: parseToml(enRaw),
-};
-
-function formatTemplate(
-  template: string,
-  vars?: Record<string, string | number>,
-): string {
-  if (!vars) {
-    return template;
-  }
-  return template.replace(/\{\{\s*(\w+)\s*\}\}/g, (match, key) => {
-    const value = vars[key];
-    if (value === undefined || value === null) {
-      return match;
-    }
-    return String(value);
-  });
-}
-
-export function t(
-  key: string,
-  fallback?: string,
-  vars?: Record<string, string | number>,
-): string {
-  const locale = detectLocale();
-  const value = getValue(translations[locale], key);
-  if (value && value.length > 0) {
-    return formatTemplate(value, vars);
-  }
-  return formatTemplate(fallback ?? key, vars);
-}
+export const t = createTomlTranslator({
+  ko: [commonKoRaw, koRaw],
+  en: [commonEnRaw, enRaw],
+});
--- a/orgfront/src/lib/sessionSliding.ts
+++ b/orgfront/src/lib/sessionSliding.ts
@@ -1,76 +1,27 @@
+import {
+  DEFAULT_SESSION_RENEW_THROTTLE_MS,
+  shouldAttemptSlidingSessionRenew as shouldAttemptSlidingSessionRenewBase,
+  shouldAttemptUnlimitedSessionRenew as shouldAttemptUnlimitedSessionRenewBase,
+  type SessionRenewDecisionParams,
+} from "../../../common/core/session";
+
+export const SESSION_RENEW_THROTTLE_MS = DEFAULT_SESSION_RENEW_THROTTLE_MS;
 export const SESSION_RENEW_THRESHOLD_MS = 5 * 60 * 1000;
-export const SESSION_RENEW_THROTTLE_MS = 30 * 1000;

-type SlidingSessionRenewDecisionParams = {
-  expiresAtSec?: number | null;
-  nowMs: number;
-  isEnabled: boolean;
-  isAuthenticated: boolean;
-  isLoading: boolean;
-  isRenewInFlight: boolean;
-  lastAttemptAtMs: number;
-  thresholdMs?: number;
-  throttleMs?: number;
-};
-
-export function shouldAttemptSlidingSessionRenew({
-  expiresAtSec,
-  nowMs,
-  isEnabled,
-  isAuthenticated,
-  isLoading,
-  isRenewInFlight,
-  lastAttemptAtMs,
-  thresholdMs = SESSION_RENEW_THRESHOLD_MS,
-  throttleMs = SESSION_RENEW_THROTTLE_MS,
-}: SlidingSessionRenewDecisionParams) {
-  if (!isEnabled || !isAuthenticated || isLoading || isRenewInFlight) {
-    return false;
-  }
-
-  if (typeof expiresAtSec !== "number") {
-    return false;
-  }
-
-  const remainingMs = expiresAtSec * 1000 - nowMs;
-  if (remainingMs <= 0 || remainingMs > thresholdMs) {
-    return false;
-  }
-
-  if (nowMs - lastAttemptAtMs < throttleMs) {
-    return false;
-  }
-
-  return true;
+export function shouldAttemptSlidingSessionRenew(
+  params: SessionRenewDecisionParams,
+) {
+  return shouldAttemptSlidingSessionRenewBase({
+    ...params,
+    thresholdMs: params.thresholdMs ?? SESSION_RENEW_THRESHOLD_MS,
+  });
 }

-export function shouldAttemptUnlimitedSessionRenew({
-  expiresAtSec,
-  nowMs,
-  isEnabled,
-  isAuthenticated,
-  isLoading,
-  isRenewInFlight,
-  lastAttemptAtMs,
-  thresholdMs = SESSION_RENEW_THRESHOLD_MS,
-  throttleMs = SESSION_RENEW_THROTTLE_MS,
-}: SlidingSessionRenewDecisionParams) {
-  if (isEnabled || !isAuthenticated || isLoading || isRenewInFlight) {
-    return false;
-  }
-
-  if (typeof expiresAtSec !== "number") {
-    return false;
-  }
-
-  const remainingMs = expiresAtSec * 1000 - nowMs;
-  if (remainingMs <= 0 || remainingMs > thresholdMs) {
-    return false;
-  }
-
-  if (nowMs - lastAttemptAtMs < throttleMs) {
-    return false;
-  }
-
-  return true;
+export function shouldAttemptUnlimitedSessionRenew(
+  params: SessionRenewDecisionParams,
+) {
+  return shouldAttemptUnlimitedSessionRenewBase({
+    ...params,
+    thresholdMs: params.thresholdMs ?? SESSION_RENEW_THRESHOLD_MS,
+  });
 }
--- a/orgfront/src/lib/utils.ts
+++ b/orgfront/src/lib/utils.ts
@@ -1,6 +1,8 @@
 import { type ClassValue, clsx } from "clsx";
 import { twMerge } from "tailwind-merge";

+import { mergeClassNames } from "../../../common/core/utils";
+
 export function cn(...inputs: ClassValue[]) {
-  return twMerge(clsx(inputs));
+  return mergeClassNames(twMerge, [clsx(inputs)]);
 }
--- a/orgfront/src/locales/en.toml
+++ b/orgfront/src/locales/en.toml
@@ -302,15 +302,6 @@ no_custom = "No custom fields defined for this tenant."
 [msg.admin.users.list.registry]
 count = "Count"

-[msg.common]
-error = "Error"
-loading = "Loading..."
-no_description = "No Description."
-parsing = "Parsing data..."
-requesting = "Requesting..."
-saving = "Saving..."
-unknown_error = "unknown error"
-
 [msg.dev]
 logout_confirm = "Are you sure you want to log out?"

@@ -1176,73 +1167,6 @@ name = "Name"
 role = "Role"


-[ui.common]
-add = "Add"
-all = "All"
-admin_only = "Admin Only"
-assign = "Assign"
-back = "Back"
-back_to_login = "Back to login"
-cancel = "Cancel"
-change_file = "Change File"
-clear_search = "Clear Search"
-close = "Close"
-collapse = "Collapse"
-confirm = "Confirm"
-copy = "Copy"
-create = "Create"
-delete = "Delete"
-details = "Details"
-edit = "Edit"
-export = "Export"
-fail = "Fail"
-go_home = "Go Home"
-view = "View"
-hyphen = "-"
-manage = "Manage"
-na = "N/A"
-never = "Never"
-next = "Next"
-none = "None"
-page_of = "Page {{page}} of {{total}}"
-prev = "Prev"
-previous = "Previous"
-qr = "QR"
-reset = "Reset"
-read_only = "Read Only"
-refresh = "Refresh"
-remove = "Remove"
-resend = "Resend"
-retry = "Retry"
-save = "Save"
-search = "Search"
-select = "Select"
-select_file = "Select File"
-select_placeholder = "Select Placeholder"
-show_more = "Show More"
-language = "Language"
-language_ko = "Korean"
-language_en = "English"
-success = "Success"
-theme_dark = "Dark"
-theme_light = "Light"
-theme_toggle = "Theme Toggle"
-unknown = "Unknown"
-
-[ui.common.badge]
-admin_only = "Admin only"
-command_only = "Command only"
-system = "System"
-
-[ui.common.status]
-active = "Active"
-blocked = "Blocked"
-failure = "Failure"
-inactive = "Inactive"
-ok = "Ok"
-pending = "Pending"
-success = "Success"
-
 [test]
 key = "Test"

--- a/orgfront/src/locales/ko.toml
+++ b/orgfront/src/locales/ko.toml
@@ -302,15 +302,6 @@ no_custom = "이 테넌트에 정의된 커스텀 필드가 없습니다."
 [msg.admin.users.list.registry]
 count = "총 {{count}}명의 사용자가 등록되어 있습니다."

-[msg.common]
-error = "오류가 발생했습니다."
-loading = "로딩 중..."
-no_description = "설명이 없습니다."
-parsing = "데이터 파싱 중..."
-requesting = "요청 중..."
-saving = "저장 중..."
-unknown_error = "알 수 없는 오류"
-
 [msg.dev]
 logout_confirm = "로그아웃 하시겠습니까?"

@@ -1178,73 +1169,6 @@ name = "이름"
 role = "역할"


-[ui.common]
-add = "추가"
-all = "전체"
-admin_only = "관리자 전용"
-assign = "할당"
-back = "돌아가기"
-back_to_login = "로그인으로 돌아가기"
-cancel = "취소"
-change_file = "파일 변경"
-clear_search = "검색 초기화"
-close = "닫기"
-collapse = "접기"
-confirm = "확인"
-copy = "복사"
-create = "생성"
-delete = "삭제"
-details = "상세정보"
-edit = "편집"
-export = "내보내기"
-fail = "실패"
-go_home = "홈으로"
-view = "보기"
-hyphen = "-"
-manage = "관리"
-na = "N/A"
-never = "Never"
-next = "다음"
-none = "없음"
-page_of = "Page {{page}} of {{total}}"
-prev = "이전"
-previous = "이전"
-qr = "QR"
-reset = "초기화"
-read_only = "읽기 전용"
-refresh = "새로고침"
-remove = "제외"
-resend = "재발송"
-retry = "다시 시도"
-save = "저장"
-search = "검색"
-select = "선택"
-select_file = "파일 선택"
-select_placeholder = "선택하세요"
-show_more = "+ 더보기"
-language = "언어"
-language_ko = "한국어"
-language_en = "English"
-success = "성공"
-theme_dark = "Dark"
-theme_light = "Light"
-theme_toggle = "테마 전환"
-unknown = "Unknown"
-
-[ui.common.badge]
-admin_only = "Admin only"
-command_only = "Command only"
-system = "System"
-
-[ui.common.status]
-active = "활성"
-blocked = "차단됨"
-failure = "실패"
-inactive = "비활성"
-ok = "정상"
-pending = "준비 중"
-success = "성공"
-
 [test]
 key = "테스트"

--- a/orgfront/src/locales/template.toml
+++ b/orgfront/src/locales/template.toml
@@ -302,15 +302,6 @@ no_custom = ""
 [msg.admin.users.list.registry]
 count = ""

-[msg.common]
-error = ""
-loading = ""
-no_description = ""
-parsing = ""
-requesting = ""
-saving = ""
-unknown_error = ""
-
 [msg.dev]
 logout_confirm = ""

@@ -1177,73 +1168,6 @@ name = ""
 role = ""


-[ui.common]
-add = ""
-all = ""
-admin_only = ""
-assign = ""
-back = ""
-back_to_login = ""
-cancel = ""
-change_file = ""
-clear_search = ""
-close = ""
-collapse = ""
-confirm = ""
-copy = ""
-create = ""
-delete = ""
-details = ""
-edit = ""
-export = ""
-fail = ""
-go_home = ""
-view = ""
-hyphen = ""
-manage = ""
-na = ""
-never = ""
-next = ""
-none = ""
-page_of = ""
-prev = ""
-previous = ""
-qr = ""
-reset = ""
-read_only = ""
-refresh = ""
-remove = ""
-resend = ""
-retry = ""
-save = ""
-search = ""
-select = ""
-select_file = ""
-select_placeholder = ""
-show_more = ""
-language = ""
-language_ko = ""
-language_en = ""
-success = ""
-theme_dark = ""
-theme_light = ""
-theme_toggle = ""
-unknown = ""
-
-[ui.common.badge]
-admin_only = ""
-command_only = ""
-system = ""
-
-[ui.common.status]
-active = ""
-blocked = ""
-failure = ""
-inactive = ""
-ok = ""
-pending = ""
-success = ""
-
 [test]
 key = ""

--- a/orgfront/tailwind.config.ts
+++ b/orgfront/tailwind.config.ts
@@ -3,7 +3,11 @@ import { fontFamily } from "tailwindcss/defaultTheme";

 const config: Config = {
  darkMode: ["class"],
-  content: ["./index.html", "./src/**/*.{ts,tsx}"],
+  content: [
+    "./index.html",
+    "./src/**/*.{ts,tsx}",
+    "../common/**/*.{ts,tsx,css}",
+  ],
  theme: {
    container: {
      center: true,
--- a/scripts/run_adminfront_ci_tests.sh
+++ b/scripts/run_adminfront_ci_tests.sh
@@ -27,8 +27,12 @@ if command -v rsync >/dev/null 2>&1; then
    --exclude 'playwright-report' \
    --exclude 'test-results' \
    "$repo_root/adminfront/" "$tmp_dir/adminfront/"
+  rsync -rlptD --delete \
+    --exclude 'node_modules' \
+    "$repo_root/common/" "$tmp_dir/common/"
 else
  cp -R "$repo_root/adminfront" "$tmp_dir/adminfront"
+  cp -R "$repo_root/common" "$tmp_dir/common"
  rm -rf "$tmp_dir/adminfront/node_modules" \
    "$tmp_dir/adminfront/playwright-report" \
    "$tmp_dir/adminfront/test-results"
--- a/tools/i18n-scanner/index.js
+++ b/tools/i18n-scanner/index.js
@@ -5,11 +5,27 @@ const fs = require('fs');
 const path = require('path');

 const ROOT_DIR = process.cwd();
-const LOCALES_DIR = path.join(ROOT_DIR, 'locales');
-const TEMPLATE_PATH = path.join(LOCALES_DIR, 'template.toml');
-const LANG_FILES = ['ko.toml', 'en.toml'];
 const FAIL_UNUSED = process.argv.includes('--fail-unused');

+const LOCALE_SPECS = [
+  {
+    name: 'root',
+    label: 'root locales',
+    dir: path.join(ROOT_DIR, 'locales'),
+    template: 'template.toml',
+    langs: ['ko.toml', 'en.toml'],
+    ownsKey: (key) => !key.startsWith('ui.common.') && !key.startsWith('msg.common.'),
+  },
+  {
+    name: 'common',
+    label: 'common locales',
+    dir: path.join(ROOT_DIR, 'common', 'locales'),
+    template: 'template.toml',
+    langs: ['ko.toml', 'en.toml'],
+    ownsKey: (key) => key.startsWith('ui.common.') || key.startsWith('msg.common.'),
+  },
+];
+
 const SKIP_DIRS = new Set([
  '.git',
  'node_modules',
@@ -78,7 +94,6 @@ function parseTomlKeys(filePath) {
      continue;
    }

-    // Strip quotes if present
    if (key.startsWith('"') && key.endsWith('"')) {
      key = key.slice(1, -1);
    }
@@ -138,6 +153,23 @@ function collectCodeKeys() {
  return keys;
 }

+function shouldIgnoreCodeKey(key) {
+  return (
+    key.includes('.msg.') ||
+    key.includes('.ui.') ||
+    key.includes('.err.') ||
+    key.includes('.test.') ||
+    key.includes('.non.') ||
+    key.startsWith('ui.admin.users.list.table.') ||
+    key.startsWith('msg.admin.users.detail.') ||
+    key.startsWith('msg.dev.clients.') ||
+    key.startsWith('ui.admin.users.create.') ||
+    key.startsWith('ui.admin.users.detail.') ||
+    key.startsWith('ui.dev.clients.') ||
+    key.startsWith('ui.dev.session.')
+  );
+}
+
 function difference(aSet, bSet) {
  const result = [];
  for (const item of aSet) {
@@ -158,72 +190,75 @@ function printList(title, items) {
  }
 }

-function main() {
-  const errors = [];
-  const warnings = [];
-
-  const templateResult = parseTomlKeys(TEMPLATE_PATH);
+function collectSpecResources(spec) {
+  const templatePath = path.join(spec.dir, spec.template);
+  const templateResult = parseTomlKeys(templatePath);
  if (!templateResult.ok) {
-    errors.push(templateResult.error);
+    return { ok: false, error: templateResult.error };
  }

  const langKeyMap = new Map();
-  for (const fileName of LANG_FILES) {
-    const langPath = path.join(LOCALES_DIR, fileName);
+  for (const fileName of spec.langs) {
+    const langPath = path.join(spec.dir, fileName);
    const langResult = parseTomlKeys(langPath);
    if (!langResult.ok) {
-      errors.push(langResult.error);
-      continue;
+      return { ok: false, error: langResult.error };
    }
    langKeyMap.set(fileName, langResult.keys);
  }

-  if (errors.length > 0) {
-    console.error('i18n 검증 실패: 필수 리소스 파일을 찾지 못했습니다.');
-    for (const error of errors) {
-      console.error(`- ${error}`);
-    }
-    process.exit(1);
-  }
+  return {
+    ok: true,
+    templateKeys: templateResult.keys,
+    langKeyMap,
+  };
+}

-  const templateKeys = templateResult.keys;
-  const rawCodeKeys = Array.from(collectCodeKeys());
-  const codeKeysArray = rawCodeKeys.filter(k => 
-    !k.includes('.msg.') &&
-    !k.includes('.ui.') &&
-    !k.includes('.err.') &&
-    !k.includes('.test.') &&
-    !k.includes('.non.') &&
-    !k.startsWith("ui.admin.users.list.table.") &&
-    !k.startsWith("msg.admin.users.detail.") &&
-    !k.startsWith("msg.common.") &&
-    !k.startsWith("msg.dev.clients.") &&
-    !k.startsWith("ui.admin.users.create.") &&
-    !k.startsWith("ui.admin.users.detail.") &&
-    !k.startsWith("ui.common.") &&
-    !k.startsWith("ui.dev.clients.") &&
-    !k.startsWith("ui.dev.session.")
+function main() {
+  const errors = [];
+  const warnings = [];
+
+  const rawCodeKeys = Array.from(collectCodeKeys()).filter(
+    (key) => !shouldIgnoreCodeKey(key),
  );
-  const codeKeys = new Set(codeKeysArray);
+  const codeKeys = new Set(rawCodeKeys);

-  for (const [fileName, langKeys] of langKeyMap.entries()) {
-    const missingInLang = difference(templateKeys, langKeys);
-    if (missingInLang.length > 0) {
-      errors.push(`[Sync Error] ${fileName} 누락 키 ${missingInLang.length}개`);
-      printList(`${fileName}에 없는 키`, missingInLang);
+  for (const spec of LOCALE_SPECS) {
+    const resources = collectSpecResources(spec);
+    if (!resources.ok) {
+      errors.push(resources.error);
+      continue;
    }
-  }

-  const missingInTemplate = difference(codeKeys, templateKeys);
-  if (missingInTemplate.length > 0) {
-    errors.push(`[Missing Key] template.toml 누락 키 ${missingInTemplate.length}개`);
-    printList('template.toml에 없는 코드 사용 키', missingInTemplate);
-  }
+    for (const [fileName, langKeys] of resources.langKeyMap.entries()) {
+      const missingInLang = difference(resources.templateKeys, langKeys);
+      if (missingInLang.length > 0) {
+        errors.push(
+          `[Sync Error] ${spec.label} ${fileName} 누락 키 ${missingInLang.length}개`,
+        );
+        printList(`${spec.label} ${fileName}에 없는 키`, missingInLang);
+      }
+    }

-  const unusedInTemplate = difference(templateKeys, codeKeys);
-  if (unusedInTemplate.length > 0) {
-    warnings.push(`[Unused Key] template.toml 미사용 키 ${unusedInTemplate.length}개`);
-    printList('코드에서 사용되지 않는 키', unusedInTemplate);
+    const ownedCodeKeys = new Set(
+      rawCodeKeys.filter((key) => spec.ownsKey(key)),
+    );
+
+    const missingInTemplate = difference(ownedCodeKeys, resources.templateKeys);
+    if (missingInTemplate.length > 0) {
+      errors.push(
+        `[Missing Key] ${spec.label} template.toml 누락 키 ${missingInTemplate.length}개`,
+      );
+      printList(`${spec.label} template.toml에 없는 코드 사용 키`, missingInTemplate);
+    }
+
+    const unusedInTemplate = difference(resources.templateKeys, codeKeys);
+    if (unusedInTemplate.length > 0) {
+      warnings.push(
+        `[Unused Key] ${spec.label} template.toml 미사용 키 ${unusedInTemplate.length}개`,
+      );
+      printList(`${spec.label} 코드에서 사용되지 않는 키`, unusedInTemplate);
+    }
  }

  if (errors.length > 0) {
--- a/tools/i18n-scanner/report.js
+++ b/tools/i18n-scanner/report.js
@@ -5,9 +5,25 @@ const fs = require('fs');
 const path = require('path');

 const ROOT_DIR = process.cwd();
-const LOCALES_DIR = path.join(ROOT_DIR, 'locales');
-const TEMPLATE_PATH = path.join(LOCALES_DIR, 'template.toml');
-const LANG_FILES = ['ko.toml', 'en.toml'];
+
+const LOCALE_SPECS = [
+  {
+    name: 'root',
+    label: 'root locales',
+    dir: path.join(ROOT_DIR, 'locales'),
+    template: 'template.toml',
+    langs: ['ko.toml', 'en.toml'],
+    ownsKey: (key) => !key.startsWith('ui.common.') && !key.startsWith('msg.common.'),
+  },
+  {
+    name: 'common',
+    label: 'common locales',
+    dir: path.join(ROOT_DIR, 'common', 'locales'),
+    template: 'template.toml',
+    langs: ['ko.toml', 'en.toml'],
+    ownsKey: (key) => key.startsWith('ui.common.') || key.startsWith('msg.common.'),
+  },
+];

 const SKIP_DIRS = new Set([
  '.git',
@@ -81,7 +97,6 @@ function parseTomlKeys(filePath) {
      continue;
    }

-    // Strip quotes if present
    if (key.startsWith('"') && key.endsWith('"')) {
      key = key.slice(1, -1);
    }
@@ -141,22 +156,20 @@ function collectCodeKeys() {
  return keys;
 }

-function filterCodeKeys(rawKeys) {
-  return Array.from(rawKeys).filter((k) =>
-    !k.includes('.msg.') &&
-    !k.includes('.ui.') &&
-    !k.includes('.err.') &&
-    !k.includes('.test.') &&
-    !k.includes('.non.') &&
-    !k.startsWith('ui.admin.users.list.table.') &&
-    !k.startsWith('msg.admin.users.detail.') &&
-    !k.startsWith('msg.common.') &&
-    !k.startsWith('msg.dev.clients.') &&
-    !k.startsWith('ui.admin.users.create.') &&
-    !k.startsWith('ui.admin.users.detail.') &&
-    !k.startsWith('ui.common.') &&
-    !k.startsWith('ui.dev.clients.') &&
-    !k.startsWith('ui.dev.session.')
+function shouldIgnoreCodeKey(key) {
+  return (
+    key.includes('.msg.') ||
+    key.includes('.ui.') ||
+    key.includes('.err.') ||
+    key.includes('.test.') ||
+    key.includes('.non.') ||
+    key.startsWith('ui.admin.users.list.table.') ||
+    key.startsWith('msg.admin.users.detail.') ||
+    key.startsWith('msg.dev.clients.') ||
+    key.startsWith('ui.admin.users.create.') ||
+    key.startsWith('ui.admin.users.detail.') ||
+    key.startsWith('ui.dev.clients.') ||
+    key.startsWith('ui.dev.session.')
  );
 }

@@ -170,62 +183,82 @@ function difference(aSet, bSet) {
  return result.sort();
 }

+function collectSpecResources(spec) {
+  const templatePath = path.join(spec.dir, spec.template);
+  const templateResult = parseTomlKeys(templatePath);
+  if (!templateResult.ok) {
+    return { ok: false, error: templateResult.error };
+  }
+
+  const langKeyMap = new Map();
+  for (const fileName of spec.langs) {
+    const langPath = path.join(spec.dir, fileName);
+    const langResult = parseTomlKeys(langPath);
+    if (!langResult.ok) {
+      return { ok: false, error: langResult.error };
+    }
+    langKeyMap.set(fileName, langResult.keys);
+  }
+
+  return {
+    ok: true,
+    templateKeys: templateResult.keys,
+    langKeyMap,
+  };
+}
+
 function buildReport() {
  const report = {
    generated_at: new Date().toISOString(),
    errors: [],
    warnings: [],
-    details: {
+    details: {},
+  };
+
+  const rawCodeKeys = Array.from(collectCodeKeys()).filter(
+    (key) => !shouldIgnoreCodeKey(key),
+  );
+  const codeKeys = new Set(rawCodeKeys);
+
+  for (const spec of LOCALE_SPECS) {
+    const resources = collectSpecResources(spec);
+    report.details[spec.name] = {
      missing_in_template: [],
      missing_in_lang: {},
      unused_in_template: [],
-    },
-  };
+    };

-  const templateResult = parseTomlKeys(TEMPLATE_PATH);
-  if (!templateResult.ok) {
-    report.errors.push(templateResult.error);
-    return report;
-  }
-
-  const templateKeys = templateResult.keys;
-  const codeKeys = new Set(filterCodeKeys(collectCodeKeys()));
-
-  const langKeyMap = new Map();
-  for (const fileName of LANG_FILES) {
-    const langPath = path.join(LOCALES_DIR, fileName);
-    const langResult = parseTomlKeys(langPath);
-    if (!langResult.ok) {
-      report.errors.push(langResult.error);
+    if (!resources.ok) {
+      report.errors.push(resources.error);
      continue;
    }
-    langKeyMap.set(fileName, langResult.keys);
-  }

-  for (const [fileName, langKeys] of langKeyMap.entries()) {
-    const missingInLang = difference(templateKeys, langKeys);
-    if (missingInLang.length > 0) {
-      report.errors.push(
-        `[Sync Error] ${fileName} 누락 키 ${missingInLang.length}개`,
-      );
-      report.details.missing_in_lang[fileName] = missingInLang;
+    for (const [fileName, langKeys] of resources.langKeyMap.entries()) {
+      const missingInLang = difference(resources.templateKeys, langKeys);
+      if (missingInLang.length > 0) {
+        report.errors.push(
+          `[Sync Error] ${spec.label} ${fileName} 누락 키 ${missingInLang.length}개`,
+        );
+        report.details[spec.name].missing_in_lang[fileName] = missingInLang;
+      }
    }
-  }

-  const missingInTemplate = difference(codeKeys, templateKeys);
-  if (missingInTemplate.length > 0) {
-    report.errors.push(
-      `[Missing Key] template.toml 누락 키 ${missingInTemplate.length}개`,
-    );
-    report.details.missing_in_template = missingInTemplate;
-  }
+    const ownedCodeKeys = new Set(rawCodeKeys.filter((key) => spec.ownsKey(key)));
+    const missingInTemplate = difference(ownedCodeKeys, resources.templateKeys);
+    if (missingInTemplate.length > 0) {
+      report.errors.push(
+        `[Missing Key] ${spec.label} template.toml 누락 키 ${missingInTemplate.length}개`,
+      );
+      report.details[spec.name].missing_in_template = missingInTemplate;
+    }

-  const unusedInTemplate = difference(templateKeys, codeKeys);
-  if (unusedInTemplate.length > 0) {
-    report.warnings.push(
-      `[Unused Key] template.toml 미사용 키 ${unusedInTemplate.length}개`,
-    );
-    report.details.unused_in_template = unusedInTemplate;
+    const unusedInTemplate = difference(resources.templateKeys, codeKeys);
+    if (unusedInTemplate.length > 0) {
+      report.warnings.push(
+        `[Unused Key] ${spec.label} template.toml 미사용 키 ${unusedInTemplate.length}개`,
+      );
+      report.details[spec.name].unused_in_template = unusedInTemplate;
+    }
  }

  return report;
@@ -258,8 +291,12 @@ function main() {
  fs.writeFileSync(summaryPath, lines.join('\n'));

  if (report.errors.length > 0) {
+    console.error('❌ i18n report generated with errors');
    process.exit(1);
  }
+
+  console.log(`✅ i18n report written to ${outPath}`);
+  console.log(`✅ i18n summary written to ${summaryPath}`);
 }

 main();
--- a/userfront-e2e/tests/auth-routing.spec.ts
+++ b/userfront-e2e/tests/auth-routing.spec.ts
@@ -95,10 +95,14 @@ async function mockUserfrontApis(
            pendingRef?: string;
          };
          pendingRef = body.pendingRef ?? null;
-        } catch (_) {
+          console.log(`[E2E-MOCK] /api/v1/auth/qr/approve POST body:`, body);
+        } catch (e) {
+          console.log(`[E2E-MOCK] /api/v1/auth/qr/approve POST body parse error:`, e);
          pendingRef = null;
        }
        options.captureApprove?.(pendingRef);
+      } else {
+        console.log(`[E2E-MOCK] /api/v1/auth/qr/approve ${route.request().method()} request`);
      }
      await route.fulfill({
        status: 200,
--- a/userfront/lib/features/auth/presentation/approve_qr_screen.dart
+++ b/userfront/lib/features/auth/presentation/approve_qr_screen.dart
@@ -3,6 +3,7 @@ import 'package:go_router/go_router.dart';
 import '../../../../core/i18n/locale_utils.dart';
 import '../../../../core/services/auth_proxy_service.dart';
 import '../../../../core/services/auth_token_store.dart';
+import '../../../../core/services/web_window.dart';

 class ApproveQrScreen extends StatefulWidget {
  final String? pendingRef;
@@ -60,7 +61,7 @@ class _ApproveQrScreenState extends State<ApproveQrScreen> {
      WidgetsBinding.instance.addPostFrameCallback((_) {
        if (!mounted) return;
        final target = buildLocalizedSigninPath(Uri.base);
-        context.go('$target?notice=qr_login_required');
+        webWindow.redirectTo('$target?notice=qr_login_required');
      });
    }
  }
@@ -102,7 +103,7 @@ class _ApproveQrScreenState extends State<ApproveQrScreen> {
    if (storedToken == null && !hasCookie) {
      if (mounted) {
        final target = buildLocalizedSigninPath(Uri.base);
-        context.go('$target?notice=qr_login_required');
+        webWindow.redirectTo('$target?notice=qr_login_required');
      }
      return;
    }
--- a/userfront/lib/main.dart
+++ b/userfront/lib/main.dart
@@ -53,6 +53,20 @@ Map<String, dynamic>? _decodeErrorDetails(String? raw) {
  return null;
 }

+bool _hasActiveLocalSession() {
+  final token = AuthTokenStore.getToken();
+  return (token != null && token.isNotEmpty) || AuthTokenStore.usesCookie();
+}
+
+String? _redirectPrivateLocaleRoute(GoRouterState state) {
+  if (_hasActiveLocalSession()) {
+    return null;
+  }
+  final localeCode =
+      extractLocaleFromPath(state.uri) ?? resolvePreferredLocaleCode();
+  return buildSigninRedirectPath(localeCode, state.uri);
+}
+
 void _attemptRecoveryFromNullCheck({
  required Object exception,
  StackTrace? stackTrace,
@@ -243,25 +257,18 @@ final _router = GoRouter(
      routes: [
        GoRoute(
          path: '/:locale',
-          redirect: (context, state) {
-            // /{locale} 진입은 화면 렌더링 없이 단일 목적지로만 보냅니다.
-            if (state.uri.pathSegments.length != 1) {
-              return null;
-            }
+          builder: (context, state) {
            final rawLocale = state.pathParameters['locale'];
            final localeCode = normalizeLocaleCode(rawLocale);
-            final token = AuthTokenStore.getToken();
-            final isLoggedIn =
-                (token != null && token.isNotEmpty) ||
-                AuthTokenStore.usesCookie();
-            if (!isLoggedIn) {
-              return buildSigninRedirectPath(localeCode, state.uri);
-            }
-            return '/$localeCode/dashboard';
+            return ScopedTheme(
+              controller: ThemeController.auth,
+              child: LocaleEntryRedirectScreen(localeCode: localeCode),
+            );
          },
          routes: [
            GoRoute(
              path: 'dashboard',
+              redirect: (context, state) => _redirectPrivateLocaleRoute(state),
              builder: (context, state) {
                return ScopedTheme(
                  controller: ThemeController.app,
@@ -271,6 +278,7 @@ final _router = GoRouter(
            ),
            GoRoute(
              path: 'profile',
+              redirect: (context, state) => _redirectPrivateLocaleRoute(state),
              builder: (context, state) => ScopedTheme(
                controller: ThemeController.app,
                child: const ProfilePage(),
@@ -430,6 +438,19 @@ final _router = GoRouter(
            ),
            GoRoute(
              path: 'approve',
+              redirect: (context, state) {
+                final token = AuthTokenStore.getToken();
+                final isLoggedIn =
+                    (token != null && token.isNotEmpty) ||
+                    AuthTokenStore.usesCookie();
+                if (isLoggedIn) {
+                  return null;
+                }
+                final localeCode =
+                    extractLocaleFromPath(state.uri) ??
+                    resolvePreferredLocaleCode();
+                return '/$localeCode/signin?notice=qr_login_required';
+              },
              builder: (context, state) => ScopedTheme(
                controller: ThemeController.auth,
                child: ApproveQrScreen(
@@ -439,6 +460,17 @@ final _router = GoRouter(
            ),
            GoRoute(
              path: 'ql/:ref',
+              redirect: (context, state) {
+                final localeCode =
+                    extractLocaleFromPath(state.uri) ??
+                    resolvePreferredLocaleCode();
+                final pendingRef = state.pathParameters['ref'];
+                if (pendingRef == null || pendingRef.isEmpty) {
+                  return '/$localeCode/approve';
+                }
+                final encodedRef = Uri.encodeQueryComponent(pendingRef);
+                return '/$localeCode/approve?ref=$encodedRef';
+              },
              builder: (context, state) => ScopedTheme(
                controller: ThemeController.auth,
                child: ApproveQrScreen(pendingRef: state.pathParameters['ref']),
@@ -446,6 +478,7 @@ final _router = GoRouter(
            ),
            GoRoute(
              path: 'scan',
+              redirect: (context, state) => _redirectPrivateLocaleRoute(state),
              builder: (context, state) => ScopedTheme(
                controller: ThemeController.auth,
                child: const QRScanScreen(),
@@ -453,6 +486,7 @@ final _router = GoRouter(
            ),
            GoRoute(
              path: 'admin/users',
+              redirect: (context, state) => _redirectPrivateLocaleRoute(state),
              builder: (context, state) => ScopedTheme(
                controller: ThemeController.app,
                child: const UserManagementScreen(),
@@ -478,6 +512,10 @@ final _router = GoRouter(
        (token != null && token.isNotEmpty) || AuthTokenStore.usesCookie();
    final path = stripLocalePath(uri);

+    if (!isLoggedIn && (path == '/approve' || path.startsWith('/ql/'))) {
+      return '/$requestedLocale/signin?notice=qr_login_required';
+    }
+
    final isPublicPath = isPublicAuthPath(path, uri);

    if (isPublicPath) {
@@ -499,9 +537,24 @@ final _router = GoRouter(
  },
 );

-class BaronSSOApp extends StatelessWidget {
+class BaronSSOApp extends StatefulWidget {
  const BaronSSOApp({super.key});

+  @override
+  State<BaronSSOApp> createState() => _BaronSSOAppState();
+}
+
+class _BaronSSOAppState extends State<BaronSSOApp> {
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      // Re-run router redirects after the first frame so session-only web
+      // storage state is reflected even when startup routing evaluated too early.
+      AuthNotifier.instance.notify();
+    });
+  }
+
  @override
  Widget build(BuildContext context) {
    final localization = EasyLocalization.of(context);
@@ -531,3 +584,49 @@ class BaronSSOApp extends StatelessWidget {
    );
  }
 }
+
+class LocaleEntryRedirectScreen extends StatefulWidget {
+  const LocaleEntryRedirectScreen({super.key, required this.localeCode});
+
+  final String localeCode;
+
+  @override
+  State<LocaleEntryRedirectScreen> createState() =>
+      _LocaleEntryRedirectScreenState();
+}
+
+class _LocaleEntryRedirectScreenState extends State<LocaleEntryRedirectScreen> {
+  bool _redirected = false;
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      _redirect();
+    });
+  }
+
+  void _redirect() {
+    if (!mounted || _redirected) {
+      return;
+    }
+
+    // This parent route is also built for nested locale routes, so only
+    // redirect when the current location is exactly `/{locale}`.
+    if (stripLocalePath(Uri.base) != '/') {
+      return;
+    }
+
+    _redirected = true;
+    if (!_hasActiveLocalSession()) {
+      context.go('/${widget.localeCode}/signin');
+      return;
+    }
+    context.go('/${widget.localeCode}/dashboard');
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return const Scaffold(body: Center(child: CircularProgressIndicator()));
+  }
+}
--- a/userfront/pubspec.lock
+++ b/userfront/pubspec.lock
@@ -45,10 +45,10 @@ packages:
    dependency: transitive
    description:
      name: characters
-      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
+      sha256: f71061c654a3380576a52b451dd5532377954cf9dbd272a78fc8479606670803
      url: "https://pub.dev"
    source: hosted
-    version: "1.4.1"
+    version: "1.4.0"
  cli_config:
    dependency: transitive
    description:
@@ -276,6 +276,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "1.0.5"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      sha256: "53385261521cc4a0c4658fd0ad07a7d14591cf8fc33abbceae306ddb974888dc"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.2"
  leak_tracker:
    dependency: transitive
    description:
@@ -328,18 +336,18 @@ packages:
    dependency: transitive
    description:
      name: matcher
-      sha256: dc0b7dc7651697ea4ff3e69ef44b0407ea32c487a39fff6a4004fa585e901861
+      sha256: dc58c723c3c24bf8d3e2d3ad3f2f9d7bd9cf43ec6feaa64181775e60190153f2
      url: "https://pub.dev"
    source: hosted
-    version: "0.12.19"
+    version: "0.12.17"
  material_color_utilities:
    dependency: transitive
    description:
      name: material_color_utilities
-      sha256: "9c337007e82b1889149c82ed242ed1cb24a66044e30979c44912381e9be4c48b"
+      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
      url: "https://pub.dev"
    source: hosted
-    version: "0.13.0"
+    version: "0.11.1"
  meta:
    dependency: transitive
    description:
@@ -661,26 +669,26 @@ packages:
    dependency: transitive
    description:
      name: test
-      sha256: "280d6d890011ca966ad08df7e8a4ddfab0fb3aa49f96ed6de56e3521347a9ae7"
+      sha256: "75906bf273541b676716d1ca7627a17e4c4070a3a16272b7a3dc7da3b9f3f6b7"
      url: "https://pub.dev"
    source: hosted
-    version: "1.30.0"
+    version: "1.26.3"
  test_api:
    dependency: transitive
    description:
      name: test_api
-      sha256: "8161c84903fd860b26bfdefb7963b3f0b68fee7adea0f59ef805ecca346f0c7a"
+      sha256: ab2726c1a94d3176a45960b6234466ec367179b87dd74f1611adb1f3b5fb9d55
      url: "https://pub.dev"
    source: hosted
-    version: "0.7.10"
+    version: "0.7.7"
  test_core:
    dependency: transitive
    description:
      name: test_core
-      sha256: "0381bd1585d1a924763c308100f2138205252fb90c9d4eeaf28489ee65ccde51"
+      sha256: "0cc24b5ff94b38d2ae73e1eb43cc302b77964fbf67abad1e296025b78deb53d0"
      url: "https://pub.dev"
    source: hosted
-    version: "0.6.16"
+    version: "0.6.12"
  toml:
    dependency: "direct main"
    description: