src/App.tsx

@@ -13,6 +13,7 @@ import { UserManagement } from './pages/admin/UserManagement';
 import { RoleManagement } from './pages/admin/RoleManagement';
 import { PermissionManagement } from './pages/admin/PermissionManagement';
 import { StatsPage } from './pages/admin/StatsPage';
+import { SettingsPage } from './pages/admin/SettingsPage';
 
 function App() {
   return (
@@ -36,6 +37,7 @@ function App() {
                   <Route path="/admin/users" element={<UserManagement />} />
                   <Route path="/admin/roles" element={<RoleManagement />} />
                   <Route path="/admin/permissions" element={<PermissionManagement />} />
+                  <Route path="/admin/settings" element={<SettingsPage />} />
                   <Route path="/admin/stats" element={<StatsPage />} />
                 </Route>
               </Route>

src/auth/AuthProvider.tsx

@@ -12,11 +12,11 @@ import { AuthContext } from './AuthContext';
 const DEV_MOCK_USER: User = {
   id: 1,
   email: 'htlee@gcsc.co.kr',
-  name: '이현태 (DEV)',
+  name: '김개발 (DEV)',
   avatarUrl: null,
   status: 'ACTIVE',
   isAdmin: true,
-  roles: [{ id: 1, name: 'ADMIN', description: '관리자', urlPatterns: ['/**'] }],
+  roles: [{ id: 1, name: 'ADMIN', description: '관리자', urlPatterns: ['/**'], defaultGrant: false }],
   createdAt: new Date().toISOString(),
   lastLoginAt: new Date().toISOString(),
 };

src/pages/admin/RoleManagement.tsx

@@ -93,7 +93,14 @@ export function RoleManagement() {
           roles.map((role) => (
             <div key={role.id} className="bg-surface border border-border-default rounded-xl p-5">
               <div className="flex items-start justify-between mb-2">
-                <h3 className="font-semibold text-text-primary">{role.name}</h3>
+                <div className="flex items-center gap-2">
+                  <h3 className="font-semibold text-text-primary">{role.name}</h3>
+                  {role.defaultGrant && (
+                    <span className="px-1.5 py-0.5 bg-success/10 text-success text-xs font-medium rounded">
+                      기본
+                    </span>
+                  )}
+                </div>
                 <div className="flex gap-1">
                   <button
                     onClick={() => openEdit(role)}

src/pages/admin/SettingsPage.tsx

@@ -0,0 +1,168 @@
+import { useCallback, useEffect, useState } from 'react';
+import type { RegistrationSettings, Role } from '../../types';
+import { api } from '../../utils/api';
+import { Alert } from '../../components/common/Alert';
+
+export function SettingsPage() {
+  const [settings, setSettings] = useState<RegistrationSettings | null>(null);
+  const [roles, setRoles] = useState<Role[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [saving, setSaving] = useState(false);
+
+  const fetchData = useCallback(async () => {
+    try {
+      const [settingsData, rolesData] = await Promise.all([
+        api.get<RegistrationSettings>('/admin/settings/registration'),
+        api.get<Role[]>('/admin/roles'),
+      ]);
+      setSettings(settingsData);
+      setRoles(rolesData);
+    } catch {
+      // API 미연동 시 기본값
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    fetchData();
+  }, [fetchData]);
+
+  const handleToggleAutoApprove = useCallback(async () => {
+    if (!settings) return;
+    const newValue = !settings.autoApprove;
+    setSaving(true);
+    try {
+      const updated = await api.put<RegistrationSettings>('/admin/settings/registration', {
+        autoApprove: newValue,
+      });
+      setSettings(updated);
+    } catch {
+      // 에러 처리
+    } finally {
+      setSaving(false);
+    }
+  }, [settings]);
+
+  const handleToggleDefaultGrant = useCallback(async (roleId: number, currentValue: boolean) => {
+    setSaving(true);
+    try {
+      await api.put(`/admin/roles/${roleId}/default-grant`, {
+        defaultGrant: !currentValue,
+      });
+      setRoles((prev) =>
+        prev.map((r) => (r.id === roleId ? { ...r, defaultGrant: !currentValue } : r))
+      );
+      if (settings) {
+        setSettings((prev) => {
+          if (!prev) return prev;
+          const updatedDefaultRoles = !currentValue
+            ? [...prev.defaultRoles, roles.find((r) => r.id === roleId)!]
+            : prev.defaultRoles.filter((r) => r.id !== roleId);
+          return { ...prev, defaultRoles: updatedDefaultRoles };
+        });
+      }
+    } catch {
+      // 에러 처리
+    } finally {
+      setSaving(false);
+    }
+  }, [settings, roles]);
+
+  const isAutoApprove = settings?.autoApprove ?? false;
+  const defaultGrantCount = roles.filter((r) => r.defaultGrant).length;
+
+  if (loading) {
+    return (
+      <div className="flex items-center justify-center py-20">
+        <div className="animate-spin h-6 w-6 border-3 border-accent border-t-transparent rounded-full" />
+      </div>
+    );
+  }
+
+  return (
+    <div className="p-8">
+      <h1 className="text-2xl font-bold text-text-primary mb-6">설정</h1>
+
+      <div className="max-w-2xl">
+        <div className="bg-surface border border-border-default rounded-xl p-6">
+          <h2 className="text-lg font-semibold text-text-primary mb-4">가입 정책</h2>
+
+          {/* 자동 승인 토글 */}
+          <div className="flex items-center justify-between">
+            <div>
+              <p className="font-medium text-text-primary">자동 승인</p>
+              <p className="text-sm text-text-secondary mt-0.5">
+                신규 가입자를 자동으로 승인합니다.
+              </p>
+            </div>
+            <button
+              onClick={handleToggleAutoApprove}
+              disabled={saving}
+              className={`relative w-11 h-6 rounded-full transition-colors cursor-pointer disabled:opacity-50 ${
+                isAutoApprove ? 'bg-accent' : 'bg-bg-tertiary'
+              }`}
+            >
+              <span
+                className={`absolute top-0.5 left-0.5 w-5 h-5 bg-white rounded-full shadow transition-transform ${
+                  isAutoApprove ? 'translate-x-5' : 'translate-x-0'
+                }`}
+              />
+            </button>
+          </div>
+
+          <hr className="my-5 border-border-default" />
+
+          {/* 기본 부여 롤 */}
+          <div>
+            <p className="font-medium text-text-primary">기본 부여 롤</p>
+            <p className="text-sm text-text-secondary mt-0.5 mb-4">
+              자동 승인 시 신규 사용자에게 배정되는 롤입니다.
+            </p>
+
+            {roles.length === 0 ? (
+              <p className="text-sm text-text-muted">등록된 롤이 없습니다.</p>
+            ) : (
+              <div className="space-y-2">
+                {roles.map((role) => (
+                  <label
+                    key={role.id}
+                    className="flex items-center gap-3 p-3 rounded-lg border border-border-default hover:bg-bg-secondary transition cursor-pointer"
+                  >
+                    <input
+                      type="checkbox"
+                      checked={role.defaultGrant}
+                      onChange={() => handleToggleDefaultGrant(role.id, role.defaultGrant)}
+                      disabled={saving}
+                      className="w-4 h-4 accent-accent cursor-pointer"
+                    />
+                    <div className="flex-1 min-w-0">
+                      <span className="font-medium text-text-primary text-sm">{role.name}</span>
+                      <span className="text-text-secondary text-sm ml-2">{role.description}</span>
+                    </div>
+                  </label>
+                ))}
+              </div>
+            )}
+          </div>
+        </div>
+
+        {/* 안내 / 경고 */}
+        <div className="mt-4 space-y-3">
+          {isAutoApprove && (
+            <Alert type="info">
+              <code>@gcsc.co.kr</code> 도메인 사용자가 가입 즉시 <strong>ACTIVE</strong> 상태가
+              되며, 기본 부여 롤이 자동 배정됩니다.
+            </Alert>
+          )}
+          {isAutoApprove && defaultGrantCount === 0 && (
+            <Alert type="warning">
+              자동 승인이 활성화되어 있지만 기본 부여 롤이 없습니다. 신규 사용자에게 롤이 배정되지
+              않아 접근 가능한 페이지가 제한될 수 있습니다.
+            </Alert>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}

src/types/index.ts

@@ -17,6 +17,7 @@ export interface Role {
   name: string;
   description: string;
   urlPatterns: string[];
+  defaultGrant: boolean;
 }
 
 export interface AuthResponse {
@@ -73,3 +74,8 @@ export interface LoginHistory {
   ipAddress: string;
   userAgent: string;
 }
+
+export interface RegistrationSettings {
+  autoApprove: boolean;
+  defaultRoles: Role[];
+}

src/utils/navigation.ts

@@ -16,6 +16,7 @@ export const ADMIN_NAV: NavItem[] = [
   { path: '/admin/users', label: '사용자 관리' },
   { path: '/admin/roles', label: '롤 관리' },
   { path: '/admin/permissions', label: '권한 관리' },
+  { path: '/admin/settings', label: '설정' },
   { path: '/admin/stats', label: '통계' },
 ];