Updated sorting for feature items

apple/OmnivoreKit/Sources/App/Views/Home/HomeFeedViewModel.swift

@@ -51,15 +51,11 @@ import Views
     self.items = items
 
     // now try to update the continue reading items:
-    featureItems = items.filter { item in
+    featureItems = (items.filter { item in
       featureFilter.predicate.evaluate(with: item)
-    }
-    .sorted(by: { left, right in
-      if let lreadAt = left.readAt, let rreadAt = right.readAt {
-        return lreadAt > rreadAt
-      }
-      return false
-    })
+    } as NSArray)
+      .sortedArray(using: [featureFilter.sortDescriptor])
+      .compactMap { $0 as? LinkedItem }
   }
 
   func handleReaderItemNotification(objectID: NSManagedObjectID, dataService: DataService) {

apple/OmnivoreKit/Sources/Models/LinkedItemFilter.swift

@@ -125,13 +125,23 @@ public extension FeaturedItemFilter {
       let newsletterLabelPredicate = NSPredicate(
         format: "SUBQUERY(labels, $label, $label.name == \"Newsletter\").@count > 0"
       )
-      return NSCompoundPredicate(andPredicateWithSubpredicates: [notInArchivePredicate, newsletterLabelPredicate])
+      return NSCompoundPredicate(andPredicateWithSubpredicates: [notInArchivePredicate, undeletedPredicate, newsletterLabelPredicate])
     case .recommended:
       // non-archived or deleted items with the Newsletter label
       let recommendedPredicate = NSPredicate(
         format: "recommendations.@count > 0"
       )
-      return NSCompoundPredicate(andPredicateWithSubpredicates: [notInArchivePredicate, recommendedPredicate])
+      return NSCompoundPredicate(andPredicateWithSubpredicates: [notInArchivePredicate, undeletedPredicate, recommendedPredicate])
+    }
+  }
+
+  var sortDescriptor: NSSortDescriptor {
+    let savedAtSort = NSSortDescriptor(key: #keyPath(LinkedItem.savedAt), ascending: false)
+    switch self {
+    case .continueReading:
+      return NSSortDescriptor(key: #keyPath(LinkedItem.readAt), ascending: false)
+    default:
+      return savedAtSort
     }
   }
 }