majro update

app/lib/utils/markdown/image_extractor.dart

@@ -0,0 +1,32 @@
+import 'package:lensai/extensions/nullable.dart';
+import 'package:markdown/markdown.dart';
+import 'package:path/path.dart' as p;
+
+List<Uri> extractImagesFromMarkdown(String markdownText) {
+  final imageUrls = <Uri>[];
+
+  final nodes = Document().parse(markdownText);
+
+  void findImages(List<Node> nodes) {
+    for (final node in nodes) {
+      if (node is Element && node.tag == 'img') {
+        final url = node.attributes['src'];
+
+        if (url.mapNotNull((url) => Uri.tryParse(url)) case final Uri url) {
+          if (p.extension(url.path)
+              case '.png' || '.jpg' || '.jpeg' || '.webp') {
+            imageUrls.add(url);
+          }
+        }
+      }
+
+      if (node is Element && node.children != null) {
+        findImages(node.children!);
+      }
+    }
+  }
+
+  findImages(nodes);
+
+  return imageUrls;
+}