[client] Manual retry in sync dialog

client/lib/ui/sync/sliver_offline.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+import 'package:phylum/libphylum/phylum_api_types.dart';
+import 'package:provider/provider.dart';
+
+class OfflineSliver extends StatelessWidget {
+  const OfflineSliver({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final unreachable = context.select<PhylumActionQueueState, bool>((state) => state.unreachable);
+
+    return SliverList(
+      delegate: SliverChildBuilderDelegate(
+        (context, i) {
+          return ListTile(
+            leading: Icon(Icons.refresh),
+            title: Text('Server Unreachable'),
+            subtitle: Text('Tap to retry'),
+            onTap: () {
+              context.read<PhylumActionQueue>().resume();
+            },
+          );
+        },
+        childCount: unreachable ? 1 : 0,
+      ),
+    );
+  }
+}

client/lib/ui/sync/sliver_updates.dart

@@ -13,7 +13,7 @@ class UpdatesSliver extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final actions = context.select<PhylumActionQueueState, List<QueuedAction<PhylumAccount>>>((state) => state.actions);
-    final updates = actions.where((action) => action.action is! ResourceUploadAction).toList(growable: false);
+    final updates = actions.where((action) => action.action is! ResourceUploadAction && action.status is! ActionStatusError).toList(growable: false);
 
     return SliverList(
       delegate: SliverChildBuilderDelegate(

client/lib/ui/sync/sync_dialog.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
-import 'package:phylum/ui/sync/sliver_changes.dart';
+import 'package:phylum/ui/sync/sliver_updates.dart';
+import 'package:phylum/ui/sync/sliver_offline.dart';
 import 'package:phylum/ui/sync/sliver_uploads.dart';
 import 'package:phylum/ui/sync/sliver_downloads.dart';
 
@@ -41,6 +42,6 @@ class SyncDialog extends StatelessWidget {
   }
 
   Widget buildContents(BuildContext context) => const CustomScrollView(
-        slivers: [DownloadsSliver(), ErrorsSliver(), UploadsSliver(), UpdatesSliver()],
+        slivers: [OfflineSliver(), DownloadsSliver(), ErrorsSliver(), UploadsSliver(), UpdatesSliver()],
       );
 }