🐛 Fix post last read at

lib/screens/posts/post_detail.dart

@@ -3,6 +3,7 @@ import 'package:get/get.dart';
 import 'package:solian/exts.dart';
 import 'package:solian/models/post.dart';
 import 'package:solian/providers/content/posts.dart';
+import 'package:solian/providers/last_read.dart';
 import 'package:solian/widgets/posts/post_item.dart';
 import 'package:solian/widgets/posts/post_replies.dart';
 
@@ -26,6 +27,7 @@ class _PostDetailScreenState extends State<PostDetailScreen> {
   Future<Post?> getDetail() async {
     if (widget.post != null) {
       item = widget.post;
+      Get.find<LastReadProvider>().feedLastReadAt = item?.id;
       return widget.post;
     }
 
@@ -38,6 +40,8 @@ class _PostDetailScreenState extends State<PostDetailScreen> {
       context.showErrorDialog(e).then((_) => Navigator.pop(context));
     }
 
+    Get.find<LastReadProvider>().feedLastReadAt = item?.id;
+
     return item;
   }