Dismiss the iPhone keyboard on pages with no text field

mac/Sources/Byre/Phone.swift

@@ -28,6 +28,18 @@ private enum PhoneRoute: Hashable {
     case task
 }
 
+private struct PhonePage: Equatable {
+    var tab: PhoneTab
+    var depth: Int
+    var task: String?
+    var taskTab: TaskTab?
+}
+
+@MainActor
+private func taskTab(_ store: Store) -> TaskTab {
+    store.sheet.flatMap { $0.owner == .lead ? nil : $0.tab } ?? store.primaryTab
+}
+
 private enum MoreRoute: Hashable {
     case notes, workflows, status, settings
 }
@@ -122,6 +134,9 @@ struct PhoneView: View {
         .onChange(of: tab == .tasks && !path.isEmpty, initial: true) { _, shown in
             store.paneFocus.setShown(shown)
         }
+        .onChange(of: page) {
+            dismissKeyboard()
+        }
         .fullScreenCover(isPresented: Binding(get: { zoomed != nil }, set: { shown in
             if !shown {
                 store.sheet = nil
@@ -160,6 +175,13 @@ struct PhoneView: View {
         }
     }
 
+    private var page: PhonePage {
+        if tab != .tasks || path.isEmpty {
+            return PhonePage(tab: tab, depth: path.count)
+        }
+        return PhonePage(tab: tab, depth: path.count, task: store.selectedTaskId, taskTab: taskTab(store))
+    }
+
     private var zoomed: SheetView? {
         switch store.sheet?.view {
         case .image, .diagram: store.sheet?.view
@@ -291,7 +313,7 @@ private struct PhoneTask: View {
     var body: some View {
         let selected = store.selectedTaskId.flatMap { store.findTask($0) }
         let accent = selected.map { taskPalette[$0.color] } ?? Palette.accent
-        let tab = store.sheet.flatMap { $0.owner == .lead ? nil : $0.tab } ?? store.primaryTab
+        let tab = taskTab(store)
         VStack(spacing: 0) {
             TaskBar()
                 .overlay(alignment: .leading) {
@@ -322,6 +344,11 @@ private struct PhoneTask: View {
     }
 }
 
+@MainActor
+private func dismissKeyboard() {
+    UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
+}
+
 private struct MoreScreen: View {
     @ViewState private var route = MoreRoute.notes
 
@@ -331,6 +358,7 @@ private struct MoreScreen: View {
                 ForEach([MoreRoute.notes, .workflows, .status, .settings], id: \.self) { r in
                     PaneTabButton(label: moreTitles[r]!, active: route == r) {
                         route = r
+                        dismissKeyboard()
                     }
                 }
                 Spacer(minLength: 0)