Wave 0.5: 4K 布局与空态修复（老板验收 15 条，视觉规范 v1.3）

apps/desktop/src/App.tsx

@@ -33,13 +33,13 @@ export default function App() {
   const content = useMemo(() => {
     switch (page) {
       case "overview":
-        return <OverviewPage />;
+        return <OverviewPage onNavigate={setPage} />;
       case "catalog":
         return <CatalogPage />;
       case "my-cli":
-        return <MyCliPage />;
+        return <MyCliPage onNavigate={setPage} />;
       case "config":
-        return <ConfigCenterPage />;
+        return <ConfigCenterPage onNavigate={setPage} />;
       case "backup":
         return <BackupPage />;
       case "settings":
@@ -49,7 +49,6 @@ export default function App() {
 
   return (
     <div className="app-shell">
-      <div className="bg-grid grid-drift" aria-hidden="true" />
       <Sidebar current={page} onNavigate={setPage} />
       <div className="app-main">
         <Header title={PAGE_META[page].title} warningCount={warningCount} />