🐛 Fix file management do not support windows format

ios/Podfile.lock

@@ -231,7 +231,7 @@ PODS:
   - libwebp/sharpyuv (1.5.0)
   - libwebp/webp (1.5.0):
     - libwebp/sharpyuv
-  - livekit_client (2.5.3):
+  - livekit_client (2.5.4):
     - Flutter
     - flutter_webrtc
     - WebRTC-SDK (= 137.7151.04)
@@ -249,13 +249,14 @@ PODS:
   - nanopb/encode (3.30910.0)
   - native_exif (0.0.1):
     - Flutter
-  - objective_c (0.0.1):
-    - Flutter
   - OrderedSet (6.0.3)
   - package_info_plus (0.4.5):
     - Flutter
   - pasteboard (0.0.1):
     - Flutter
+  - path_provider_foundation (0.0.1):
+    - Flutter
+    - FlutterMacOS
   - pointer_interceptor_ios (0.0.1):
     - Flutter
   - PromisesObjC (2.4.0)
@@ -347,9 +348,9 @@ DEPENDENCIES:
   - media_kit_libs_ios_video (from `.symlinks/plugins/media_kit_libs_ios_video/ios`)
   - media_kit_video (from `.symlinks/plugins/media_kit_video/ios`)
   - native_exif (from `.symlinks/plugins/native_exif/ios`)
-  - objective_c (from `.symlinks/plugins/objective_c/ios`)
   - package_info_plus (from `.symlinks/plugins/package_info_plus/ios`)
   - pasteboard (from `.symlinks/plugins/pasteboard/ios`)
+  - path_provider_foundation (from `.symlinks/plugins/path_provider_foundation/darwin`)
   - pointer_interceptor_ios (from `.symlinks/plugins/pointer_interceptor_ios/ios`)
   - protocol_handler_ios (from `.symlinks/plugins/protocol_handler_ios/ios`)
   - receive_sharing_intent (from `.symlinks/plugins/receive_sharing_intent/ios`)
@@ -451,12 +452,12 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/media_kit_video/ios"
   native_exif:
     :path: ".symlinks/plugins/native_exif/ios"
-  objective_c:
-    :path: ".symlinks/plugins/objective_c/ios"
   package_info_plus:
     :path: ".symlinks/plugins/package_info_plus/ios"
   pasteboard:
     :path: ".symlinks/plugins/pasteboard/ios"
+  path_provider_foundation:
+    :path: ".symlinks/plugins/path_provider_foundation/darwin"
   pointer_interceptor_ios:
     :path: ".symlinks/plugins/pointer_interceptor_ios/ios"
   protocol_handler_ios:
@@ -528,16 +529,16 @@ SPEC CHECKSUMS:
   Kingfisher: 23d18f54677d973b713e54ce6a8f5eef6e7056ba
   KingfisherWebP: 38b9721821947f547afb78f933f75f4f9e0ae402
   libwebp: 02b23773aedb6ff1fd38cec7a77b81414c6842a8
-  livekit_client: 86c8af579274e4b7a215185a8080db2d4e176f40
+  livekit_client: 53ca658779b78710fb458cccee28b53a13356c15
   local_auth_darwin: c3ee6cce0a8d56be34c8ccb66ba31f7f180aaebb
   media_kit_libs_ios_video: 5a18affdb97d1f5d466dc79988b13eff6c5e2854
   media_kit_video: 1746e198cb697d1ffb734b1d05ec429d1fcd1474
   nanopb: fad817b59e0457d11a5dfbde799381cd727c1275
   native_exif: 0eb73d3d5b3ca892719228df8d2d1b13d1ae396c
-  objective_c: 89e720c30d716b036faf9c9684022048eee1eee2
   OrderedSet: e539b66b644ff081c73a262d24ad552a69be3a94
   package_info_plus: af8e2ca6888548050f16fa2f1938db7b5a5df499
   pasteboard: 49088aeb6119d51f976a421db60d8e1ab079b63c
+  path_provider_foundation: bb55f6dbba17d0dccd6737fe6f7f34fbd0376880
   pointer_interceptor_ios: da06a662d5bfd329602b45b2ab41bc0fb5fdb0f0
   PromisesObjC: f5707f49cb48b9636751c5b2e7d227e43fba9f47
   PromisesSwift: 9d77319bbe72ebf6d872900551f7eeba9bce2851

lib/widgets/sites/file_management_section.dart

@@ -11,6 +11,7 @@ import 'package:island/widgets/alert.dart';
 import 'package:island/widgets/sites/file_upload_dialog.dart';
 import 'package:island/widgets/sites/file_item.dart';
 import 'package:material_symbols_icons/symbols.dart';
+import 'package:path/path.dart' as p;
 
 class FileManagementSection extends HookConsumerWidget {
   final SnPublicationSite site;
@@ -293,10 +294,10 @@ class FileManagementSection extends HookConsumerWidget {
     try {
       await for (final entity in Directory(dirPath).list(recursive: true)) {
         if (entity is File) {
-          String relativePath = entity.path.substring(dirPath.length);
+          String relativePath = p.relative(entity.path, from: dirPath);
-          if (relativePath.startsWith('/')) {
+          // Normalize to forward slashes for consistency (e.g. for API uploads)
-            relativePath = relativePath.substring(1);
+          relativePath = relativePath.replaceAll(r'\', '/');
-          }
+
           if (relativePath.isEmpty) continue;
           results.add({
             'file': File(entity.path),