修复了课程表和发帖按钮

src/screens/create/CreatePostScreen.tsx

@@ -33,6 +33,11 @@ import VoteEditor from '../../components/business/VoteEditor';
 import { useResponsive, useResponsiveValue } from '../../hooks';
 import { RootStackParamList } from '../../navigation/types';
 
+// Props 接口
+interface CreatePostScreenProps {
+  onClose?: () => void;
+}
+
 const MAX_TITLE_LENGTH = 100;
 const MAX_CONTENT_LENGTH = 2000;
 
@@ -73,7 +78,8 @@ const getPublishErrorMessage = (error: unknown): string => {
   return '发布失败，请重试';
 };
 
-export const CreatePostScreen: React.FC = () => {
+export const CreatePostScreen: React.FC<CreatePostScreenProps> = (props) => {
+  const { onClose } = props;
   const navigation = useNavigation();
   const route = useRoute<RouteProp<RootStackParamList, 'CreatePost'>>();
   const isEditMode = route.params?.mode === 'edit' && !!route.params?.postId;
@@ -130,8 +136,14 @@ export const CreatePostScreen: React.FC = () => {
   React.useLayoutEffect(() => {
     navigation.setOptions({
       title: isEditMode ? '编辑帖子' : '发布帖子',
+      // 当作为 Modal 使用时，显示关闭按钮
+      headerLeft: onClose ? () => (
+        <TouchableOpacity onPress={onClose} style={{ padding: 8 }}>
+          <MaterialCommunityIcons name="close" size={24} color={colors.text.primary} />
+        </TouchableOpacity>
+      ) : undefined,
     });
-  }, [navigation, isEditMode]);
+  }, [navigation, isEditMode, onClose]);
 
   React.useEffect(() => {
     if (!isEditMode || !editPostID) {