feat(frontend): 누락된 메뉴 14개 페이지 일괄 구현

신규 페이지 (모두 ProTable / ProCard 패턴):
- org/OrgTree: 조직 트리 + 선택 시 우측에 소속 설계사 ProTable
- product/CompanyList: 보험사 목록
- product/ProductList: 상품 목록 (보험종 필터)
- rule/CommissionRateList: 수수료율 (보험사 통보)
- rule/PayoutRuleList: 지급율 (직급 × 보험종 × 회차)
- rule/OverrideRuleList: 오버라이드 규정 (직급 페어)
- rule/ChargebackRuleList: 환수 규정 (실효 월수 구간)
- rule/ExceptionCodeList: 예외 코드 마스터
- ledger/MaintainLedger: 유지수수료 원장
- receive/ReceiveData: 보험사 raw 수신 데이터
- receive/ReceiveMapping: 보험사 프로파일 + 필드 매핑 규칙
- system/MenuManage: 메뉴 트리 표시 (Tree)
- system/SystemConfig: 키-값 설정 (그룹별 필터)
- system/SystemLog: 로그인/API/변경 이력 3 탭

신규 API 모듈:
- api/org.ts (조직 트리)
- api/company.ts, api/product.ts
- api/rule.ts (5종 통합)
- api/receive.ts (profile/field/raw/error)
- api/config.ts, api/log.ts

App.tsx: 14 라우트 추가 (org/tree, companies, products, rules/*,
receive/*, ledger/maintain, system/menus, system/config, system/logs)

검증:
- tsc -b 통과
- 12개 백엔드 엔드포인트 200 OK 확인
- dev 서버 HMR 자동 반영

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

ga-frontend/src/App.tsx

@@ -3,18 +3,38 @@ import LoginPage from '@/pages/LoginPage';
 import MainLayout from '@/layouts/MainLayout';
 import Dashboard from '@/pages/Dashboard';
 
+import OrgTree from '@/pages/org/OrgTree';
 import AgentList from '@/pages/org/AgentList';
 import AgentDetail from '@/pages/org/AgentDetail';
 import AgentForm from '@/pages/org/AgentForm';
+
+import CompanyList from '@/pages/product/CompanyList';
+import ProductList from '@/pages/product/ProductList';
 import ContractList from '@/pages/product/ContractList';
+
+import CommissionRateList from '@/pages/rule/CommissionRateList';
+import PayoutRuleList from '@/pages/rule/PayoutRuleList';
+import OverrideRuleList from '@/pages/rule/OverrideRuleList';
+import ChargebackRuleList from '@/pages/rule/ChargebackRuleList';
+import ExceptionCodeList from '@/pages/rule/ExceptionCodeList';
+
+import ReceiveData from '@/pages/receive/ReceiveData';
+import ReceiveMapping from '@/pages/receive/ReceiveMapping';
+
 import RecruitLedger from '@/pages/ledger/RecruitLedger';
+import MaintainLedger from '@/pages/ledger/MaintainLedger';
 import ExceptionLedger from '@/pages/ledger/ExceptionLedger';
+
 import SettleList from '@/pages/settle/SettleList';
-import PaymentList from '@/pages/settle/PaymentList';
 import BatchRun from '@/pages/settle/BatchRun';
+import PaymentList from '@/pages/settle/PaymentList';
+
 import UserList from '@/pages/system/UserList';
 import RoleList from '@/pages/system/RoleList';
+import MenuManage from '@/pages/system/MenuManage';
 import CodeList from '@/pages/system/CodeList';
+import SystemConfig from '@/pages/system/SystemConfig';
+import SystemLog from '@/pages/system/SystemLog';
 
 function RequireAuth({ children }: { children: React.ReactNode }) {
   const token = localStorage.getItem('accessToken');
@@ -28,20 +48,35 @@ export default function App() {
       <Route path="/" element={<RequireAuth><MainLayout /></RequireAuth>}>
         <Route index element={<Dashboard />} />
 
-        {/* 조직 / 설계사 */}
+        {/* 조직 / 인사 */}
+        <Route path="org/tree"              element={<OrgTree />} />
         <Route path="org/agents"            element={<AgentList />} />
         <Route path="org/agents/new"        element={<AgentForm />} />
         <Route path="org/agents/:id"        element={<AgentDetail />} />
         <Route path="org/agents/:id/edit"   element={<AgentForm />} />
 
-        {/* 계약 */}
+        {/* 상품 / 계약 */}
+        <Route path="companies"             element={<CompanyList />} />
+        <Route path="products"              element={<ProductList />} />
         <Route path="contracts"             element={<ContractList />} />
 
+        {/* 수수료 규정 */}
+        <Route path="rules/commission"      element={<CommissionRateList />} />
+        <Route path="rules/payout"          element={<PayoutRuleList />} />
+        <Route path="rules/override"        element={<OverrideRuleList />} />
+        <Route path="rules/chargeback"      element={<ChargebackRuleList />} />
+        <Route path="rules/exceptions"      element={<ExceptionCodeList />} />
+
+        {/* 데이터 수신 */}
+        <Route path="receive/data"          element={<ReceiveData />} />
+        <Route path="receive/mapping"       element={<ReceiveMapping />} />
+
         {/* 원장 */}
         <Route path="ledger/recruit"        element={<RecruitLedger />} />
+        <Route path="ledger/maintain"       element={<MaintainLedger />} />
         <Route path="ledger/exception"      element={<ExceptionLedger />} />
 
-        {/* 정산 / 지급 / 배치 */}
+        {/* 정산 / 지급 */}
         <Route path="settle"                element={<SettleList />} />
         <Route path="settle/batch"          element={<BatchRun />} />
         <Route path="payments"              element={<PaymentList />} />
@@ -49,7 +84,10 @@ export default function App() {
         {/* 시스템관리 */}
         <Route path="system/users"          element={<UserList />} />
         <Route path="system/roles"          element={<RoleList />} />
+        <Route path="system/menus"          element={<MenuManage />} />
         <Route path="system/codes"          element={<CodeList />} />
+        <Route path="system/config"         element={<SystemConfig />} />
+        <Route path="system/logs"           element={<SystemLog />} />
       </Route>
     </Routes>
   );