Report a host's pinned paths among the fields an edit changed

tests/DodoSSH.Client.Sync.Tests/ItemKindsTests.cs

@@ -1,3 +1,4 @@
+using DodoSSH.Client.Domain;
 using DodoSSH.Contracts;
 
 namespace DodoSSH.Client.Sync.Tests;
@@ -53,4 +54,23 @@ public sealed class ItemKindsTests
 
         reconcilers.Keys.Order().ShouldBe(ItemKinds.SyncedTypes.Order());
     }
+
+    [Fact]
+    public void AHostEditThatOnlyChangedItsPins_IsReportedAsChangingPinnedPaths()
+    {
+        // Pinned paths were the one host field Changes did not look at, so an edit that only pinned or
+        // unpinned a directory reached the keychain log as an update that changed nothing.
+        var before = new HostSecret
+        {
+            Label = "db-01",
+            Hostname = "db-01.internal",
+            PinnedPaths = PinnedPathList.Create(["/var/log"]),
+        };
+        var after = before with { PinnedPaths = PinnedPathList.Create(["/var/log", "/etc/nginx"]) };
+
+        HostKind.Instance.Changes(before, after).ShouldBe(["Pinned paths"]);
+        HostKind.Instance.Changes(before, before with { PinnedPaths = PinnedPathList.Empty })
+            .ShouldBe(["Pinned paths"]);
+        HostKind.Instance.Changes(before, before with { }).ShouldBeEmpty();
+    }
 }