feat: 登陆注册UI调整，用户协议和隐私政策跳转调整

src/App.js

@@ -42,10 +42,12 @@ const TradingSimulation = React.lazy(() => import("views/TradingSimulation"));
 
 // Contexts
 import { AuthProvider } from "contexts/AuthContext";
+import { AuthModalProvider } from "contexts/AuthModalContext";
 
 // Components
 import ProtectedRoute from "components/ProtectedRoute";
 import ErrorBoundary from "components/ErrorBoundary";
+import AuthModalManager from "components/Auth/AuthModalManager";
 
 function AppContent() {
     const { colorMode } = useColorMode();
@@ -180,7 +182,10 @@ export default function App() {
         <ChakraProvider theme={theme}>
             <ErrorBoundary>
                 <AuthProvider>
-                    <AppContent />
+                    <AuthModalProvider>
+                        <AppContent />
+                        <AuthModalManager />
+                    </AuthModalProvider>
                 </AuthProvider>
             </ErrorBoundary>
         </ChakraProvider>