ios: mac catalyst kb shortcuts

ios/Apps/Sybil/Sources/SybilApp.swift

@@ -9,5 +9,8 @@ struct SybilApp: App
         WindowGroup {
             SplitView()
         }
+        .commands {
+            SybilCommands()
+        }
     }
 }

ios/Packages/Sybil/Sources/Sybil/SplitView.swift

@@ -7,6 +7,29 @@ public struct SplitView: View {
     @State private var shouldRefreshOnForeground = false
     @State private var composerFocusRequest = 0
 
+    private var keyboardActions: SybilKeyboardActions? {
+        guard !viewModel.isCheckingSession, viewModel.isAuthenticated else {
+            return nil
+        }
+
+        return SybilKeyboardActions(
+            newChat: {
+                viewModel.startNewChat()
+                composerFocusRequest += 1
+            },
+            newSearch: {
+                viewModel.startNewSearch()
+                composerFocusRequest += 1
+            },
+            previousConversation: {
+                viewModel.selectPreviousSidebarItem()
+            },
+            nextConversation: {
+                viewModel.selectNextSidebarItem()
+            }
+        )
+    }
+
     @MainActor public init() {
         SybilFontRegistry.registerIfNeeded()
         SybilTheme.applySystemAppearance()
@@ -41,6 +64,7 @@ public struct SplitView: View {
         }
         .font(.sybil(.body))
         .preferredColorScheme(.dark)
+        .focusedSceneValue(\.sybilKeyboardActions, keyboardActions)
         .task {
             await viewModel.bootstrap()
         }
@@ -67,3 +91,57 @@ public struct SplitView: View {
         }
     }
 }
+
+public struct SybilCommands: Commands {
+    @FocusedValue(\.sybilKeyboardActions) private var keyboardActions
+
+    public init() {}
+
+    public var body: some Commands {
+        CommandGroup(replacing: .newItem) {
+            Button("New Chat") {
+                keyboardActions?.newChat()
+            }
+            .keyboardShortcut("n", modifiers: .command)
+            .disabled(keyboardActions == nil)
+
+            Button("New Search") {
+                keyboardActions?.newSearch()
+            }
+            .keyboardShortcut("n", modifiers: [.command, .shift])
+            .disabled(keyboardActions == nil)
+        }
+
+        CommandMenu("Conversation") {
+            Button("Previous Conversation") {
+                keyboardActions?.previousConversation()
+            }
+            .keyboardShortcut("[", modifiers: .command)
+            .disabled(keyboardActions == nil)
+
+            Button("Next Conversation") {
+                keyboardActions?.nextConversation()
+            }
+            .keyboardShortcut("]", modifiers: .command)
+            .disabled(keyboardActions == nil)
+        }
+    }
+}
+
+private struct SybilKeyboardActions {
+    var newChat: () -> Void
+    var newSearch: () -> Void
+    var previousConversation: () -> Void
+    var nextConversation: () -> Void
+}
+
+private struct SybilKeyboardActionsKey: FocusedValueKey {
+    typealias Value = SybilKeyboardActions
+}
+
+private extension FocusedValues {
+    var sybilKeyboardActions: SybilKeyboardActions? {
+        get { self[SybilKeyboardActionsKey.self] }
+        set { self[SybilKeyboardActionsKey.self] = newValue }
+    }
+}

ios/Packages/Sybil/Sources/Sybil/SybilViewModel.swift

@@ -443,6 +443,34 @@ final class SybilViewModel {
         }
     }
 
+    func selectPreviousSidebarItem() {
+        selectAdjacentSidebarItem(offset: -1)
+    }
+
+    func selectNextSidebarItem() {
+        selectAdjacentSidebarItem(offset: 1)
+    }
+
+    private func selectAdjacentSidebarItem(offset: Int) {
+        let items = sidebarItems
+        guard !items.isEmpty else {
+            return
+        }
+
+        let currentIndex = selectedItem.flatMap { selection in
+            items.firstIndex { $0.selection == selection }
+        }
+        let startingIndex = currentIndex ?? (offset < 0 ? items.count : -1)
+        let nextIndex = (startingIndex + offset + items.count) % items.count
+        let nextSelection = items[nextIndex].selection
+
+        guard draftKind != nil || selectedItem != nextSelection else {
+            return
+        }
+
+        select(nextSelection)
+    }
+
     func deleteItem(_ selection: SidebarSelection) async {
         guard isAuthenticated else {
             return