fix(web): restore homepage vertical scroll

apps/web/src/app/[locale]/page.tsx

@@ -1072,7 +1072,9 @@ export default function Home({ params }: { params: { locale: string } }) {
         height: 'calc(100vh - 68px)',
         background: '#f5f4ed',
         fontFamily: 'var(--font-body), monospace',
-        overflow: 'hidden',
+        overflowX: 'hidden',
+        overflowY: 'auto',
+        overscrollBehavior: 'contain',
       }}>
 
         <section style={{
@@ -1398,11 +1400,11 @@ export default function Home({ params }: { params: { locale: string } }) {
         </div>
 
         {/* ── 主體 2 欄 ─────────────────────────────────────────────────────── */}
-        <div style={{ display: 'flex', flex: 1, overflow: 'hidden', padding: '14px 20px', gap: 20, background: '#f5f4ed' }}>
+        <div style={{ display: 'flex', flex: '0 0 auto', overflow: 'visible', padding: '14px 20px', gap: 20, background: '#f5f4ed' }}>
 
           {/* ── 左欄 (60%): 活躍事件 + 處置統計 + 最近活動 ─────────────── */}
           <div style={{
-            flex: 6, minWidth: 0, overflowY: 'auto',
+            flex: 6, minWidth: 0, overflowY: 'visible',
             display: 'flex', flexDirection: 'column', gap: 14,
             paddingBottom: 40,
           }}>
@@ -1509,7 +1511,7 @@ export default function Home({ params }: { params: { locale: string } }) {
           {/* ── 右欄 (40%): OpenClaw + 基礎架構 + 監控工具 ─────────────── */}
           <div style={{
             flex: 4, minWidth: 0,
-            overflowY: 'auto',
+            overflowY: 'visible',
             display: 'flex',
             flexDirection: 'column',
             gap: 14,