PC端的部分适配

src/screens/home/SearchScreen.tsx

@@ -31,8 +31,14 @@ const TABS = ['帖子', '用户'];
 
 type SearchType = 'posts' | 'users';
 
-export const SearchScreen: React.FC = () => {
-  const navigation = useNavigation<NavigationProp>();
+interface SearchScreenProps {
+  onBack?: () => void;
+  navigation?: NavigationProp;
+}
+
+export const SearchScreen: React.FC<SearchScreenProps> = ({ onBack, navigation: propNavigation }) => {
+  // 如果传入了 navigation 则使用传入的，否则使用 hook 获取的
+  const navigation = propNavigation || useNavigation<NavigationProp>();
   const insets = useSafeAreaInsets();
   const { searchHistory: history, addSearchHistory, clearSearchHistory } = useUserStore();
   
@@ -422,9 +428,9 @@ export const SearchScreen: React.FC = () => {
             autoFocus
           />
         </View>
-        <TouchableOpacity 
-          style={[styles.cancelButton, { marginLeft: responsiveGap }]} 
-          onPress={() => navigation.goBack()}
+        <TouchableOpacity
+          style={[styles.cancelButton, { marginLeft: responsiveGap }]}
+          onPress={() => onBack ? onBack() : navigation.goBack()}
           activeOpacity={0.85}
         >
           <Text 
@@ -476,6 +482,12 @@ const styles = StyleSheet.create({
     backgroundColor: `${colors.primary.main}08`,
     paddingHorizontal: spacing.xs,
     paddingVertical: spacing.xs,
+    // 移除阴影效果
+    shadowColor: 'transparent',
+    shadowOffset: { width: 0, height: 0 },
+    shadowOpacity: 0,
+    shadowRadius: 0,
+    elevation: 0,
   },
   cancelButton: {
     backgroundColor: `${colors.primary.main}14`,