feat(stock): /stock/screener 라우트 + 임시 placeholder

src/pages/stock/screener/Screener.jsx

@@ -0,0 +1,10 @@
+import React from 'react';
+
+export default function Screener() {
+    return (
+        <div style={{ padding: 24, color: '#e5e7eb' }}>
+            <h1>스크리너</h1>
+            <p>구현 중 — Task 4.3에서 본 페이지 골격 + hooks + 컴포넌트가 추가됩니다.</p>
+        </div>
+    );
+}

src/routes.jsx

@@ -19,6 +19,7 @@ const Lotto = lazy(() => import('./pages/lotto/Lotto'));
 const Travel = lazy(() => import('./pages/travel/Travel'));
 const Stock = lazy(() => import('./pages/stock/Stock'));
 const StockTrade = lazy(() => import('./pages/stock/StockTrade'));
+const Screener = lazy(() => import('./pages/stock/screener/Screener'));
 const Subscription = lazy(() => import('./pages/subscription/Subscription'));
 const EffectLab = lazy(() => import('./pages/effect-lab/EffectLab'));
 const SwordStream = lazy(() => import('./pages/effect-lab/SwordStream'));
@@ -160,6 +161,10 @@ export const appRoutes = [
         path: 'stock/trade',
         element: <StockTrade />,
     },
+    {
+        path: 'stock/screener',
+        element: <Screener />,
+    },
     {
         path: 'realestate',
         element: <Subscription />,