basic file exploration and bugfixes

lib/sftp_explorer.dart

@@ -0,0 +1,62 @@
+import 'package:dartssh2/dartssh2.dart';
+import 'package:flutter/material.dart';
+
+class SftpExplorer extends StatefulWidget {
+  const SftpExplorer({super.key, required this.sftpClient, this.path = '/'});
+
+  final SftpClient sftpClient;
+  final String path;
+
+  @override
+  State<SftpExplorer> createState() => _SftpExplorerState();
+}
+
+class _SftpExplorerState extends State<SftpExplorer> {
+
+  bool _isLoading = true;
+  late List<SftpName> _dirContents;
+
+
+  @override
+  void initState() {
+    super.initState();
+    _listDir();
+  }
+
+  void _listDir() async {
+    _dirContents =  await widget.sftpClient.listdir(widget.path);
+    setState(() {
+      _isLoading = false;
+    });
+  }
+
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Explorer'),
+      ),
+      body: _isLoading ? Center(child: CircularProgressIndicator()) : ListView.builder(
+        itemCount: _dirContents.length,
+        itemBuilder: (context, index) {
+          final dirEntry = _dirContents[index];
+          return ListTile(
+            leading: Icon(dirEntry.attr.isDirectory ? Icons.folder : Icons.description),
+            title: Text(dirEntry.filename),
+            onTap: () {
+              if (dirEntry.attr.isDirectory) {
+                Navigator.push(context, MaterialPageRoute(
+                  builder: (context) => SftpExplorer(
+                    sftpClient: widget.sftpClient,
+                    path: '${widget.path}${dirEntry.filename}/',
+                  )
+                ));
+              }
+            },
+          );
+        }, 
+      )
+    );
+  }
+}