feat(ui): 新增登录入口与我的页预览

test/auth/auth_page_test.dart

@@ -59,6 +59,9 @@ void main() {
       ),
     );
     await tester.pumpAndSettle();
+    await tester.ensureVisible(find.byKey(const Key('auth-entry-email')));
+    await tester.tap(find.byKey(const Key('auth-entry-email')));
+    await tester.pumpAndSettle();
   }
 
   testWidgets('should_show_email_error_and_stay_on_page_when_form_is_empty', (