add label editing to reader view

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

@@ -103,7 +103,7 @@ import Views
         }
       }
       .onChange(of: viewModel.selectedLinkItem) { _ in
-        viewModel.commitProgressUpdates()
+        viewModel.commitItemUpdates()
       }
     }
   }

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

@@ -11,6 +11,9 @@ final class HomeFeedViewModel: ObservableObject {
   /// Track progress updates to be committed when user navigates back to grid view
   var uncommittedReadingProgressUpdates = [String: Double]()
 
+  /// Track label updates to be committed when user navigates back to grid view
+  var uncommittedLabelUpdates = [String: [FeedItemLabel]]()
+
   @Published var items = [FeedItem]()
   @Published var isLoading = false
   @Published var showPushNotificationPrimer = false
@@ -173,14 +176,18 @@ final class HomeFeedViewModel: ObservableObject {
     .store(in: &subscriptions)
   }
 
-  /// Update `FeedItem`s with the cached reading progress values so it can animate when the
+  /// Update `FeedItem`s with the cached reading progress and label values so it can animate when the
   /// user navigates back to the grid view (and also avoid mutations of the grid items
   /// that can cause the `NavigationView` to pop.
-  func commitProgressUpdates() {
+  func commitItemUpdates() {
     for (key, value) in uncommittedReadingProgressUpdates {
       updateProgress(itemID: key, progress: value)
     }
+    for (key, value) in uncommittedLabelUpdates {
+      updateLabels(itemID: key, labels: value)
+    }
     uncommittedReadingProgressUpdates = [:]
+    uncommittedLabelUpdates = [:]
   }
 
   private func updateProgress(itemID: String, progress: Double) {
@@ -191,6 +198,13 @@ final class HomeFeedViewModel: ObservableObject {
   }
 
   func updateLabels(itemID: String, labels: [FeedItemLabel]) {
+    // If item is being being displayed then delay the state update of labels until
+    // user is no longer reading the item.
+    if selectedLinkItem != nil {
+      uncommittedLabelUpdates[itemID] = labels
+      return
+    }
+
     guard let item = items.first(where: { $0.id == itemID }) else { return }
     if let index = items.firstIndex(of: item) {
       items[index].labels = labels

apple/OmnivoreKit/Sources/App/Views/WebReader/WebReaderContainer.swift

@@ -132,6 +132,10 @@ import WebKit
         Menu(
           content: {
             Group {
+              Button(
+                action: { homeFeedViewModel.itemUnderLabelEdit = item },
+                label: { Label("Edit Labels", systemImage: "tag") }
+              )
               Button(
                 action: {
                   homeFeedViewModel.setLinkArchived(