Use SourceCache, set SelectedItem and scroll to it

src/Core/FileTime.Core.Abstraction/Extensions/DynamicDataExtensions.cs

@@ -41,7 +41,7 @@ public static class DynamicDataExtensions
     }
 
     public static async Task<IEnumerable<AbsolutePath>?> GetItemsAsync(
-        this IObservable<IObservable<IChangeSet<AbsolutePath>>?> stream)
+        this IObservable<IObservable<IChangeSet<AbsolutePath, string>>?> stream)
         => await GetItemsAsync(stream
             .Select(s =>
                 s is null
@@ -50,7 +50,7 @@ public static class DynamicDataExtensions
             .Switch());
 
     public static async Task<IEnumerable<AbsolutePath>?> GetItemsAsync(
-        this IObservable<IChangeSet<AbsolutePath>> stream)
+        this IObservable<IChangeSet<AbsolutePath, string>> stream)
         => await GetItemsAsync(stream.ToCollection());
 
     private static Task<IEnumerable<AbsolutePath>?> GetItemsAsync(

src/Core/FileTime.Core.Abstraction/Models/IContainer.cs

@@ -4,6 +4,6 @@ namespace FileTime.Core.Models;
 
 public interface IContainer : IItem
 {
-    IObservable<IObservable<IChangeSet<AbsolutePath>>?> Items { get; }
+    IObservable<IObservable<IChangeSet<AbsolutePath, string>>?> Items { get; }
     IObservable<bool> IsLoading { get; }
 }

src/Core/FileTime.Core.Abstraction/Services/ITab.cs

@@ -8,7 +8,7 @@ public interface ITab : IInitable<IContainer>, IDisposable
 {
     IObservable<IContainer?> CurrentLocation { get; }
     IObservable<AbsolutePath?> CurrentSelectedItem { get; }
-    IObservable<IObservable<IChangeSet<IItem>>?> CurrentItems { get; }
+    IObservable<IObservable<IChangeSet<IItem, string>>?> CurrentItems { get; }
     FullName? LastDeepestSelectedPath { get; }
 
     void SetCurrentLocation(IContainer newLocation);