macos: enter and shift+enter move the results

macos/Sources/Ghostty/SurfaceView.swift

@@ -412,14 +412,17 @@ extension Ghostty {
                     .background(Color.primary.opacity(0.1))
                     .cornerRadius(6)
                     .focused($isSearchFieldFocused)
-                        .onSubmit {
-                            guard let surface = surfaceView.surface else { return }
-                            let action = "navigate_search:next"
-                            ghostty_surface_binding_action(surface, action, UInt(action.count))
-                        }
                     .onExitCommand {
                         Ghostty.moveFocus(to: surfaceView)
                     }
+                    .backport.onKeyPress(.return) { modifiers in
+                        guard let surface = surfaceView.surface else { return .ignored }
+                        let action = modifiers.contains(.shift)
+                        ? "navigate_search:previous"
+                        : "navigate_search:next"
+                        ghostty_surface_binding_action(surface, action, UInt(action.count))
+                        return .handled
+                    }
                     
                     Button(action: {
                         guard let surface = surfaceView.surface else { return }

macos/Sources/Helpers/Backport.swift

@@ -18,6 +18,12 @@ extension Backport where Content: Scene {
     // None currently
 }
 
+/// Result type for backported onKeyPress handler
+enum BackportKeyPressResult {
+    case handled
+    case ignored
+}
+
 extension Backport where Content: View {
     func pointerVisibility(_ v: BackportVisibility) -> some View {
         #if canImport(AppKit)
@@ -42,6 +48,24 @@ extension Backport where Content: View {
         return content
         #endif
     }
+    
+    /// Backported onKeyPress that works on macOS 14+ and is a no-op on macOS 13.
+    func onKeyPress(_ key: KeyEquivalent, action: @escaping (EventModifiers) -> BackportKeyPressResult) -> some View {
+        #if canImport(AppKit)
+        if #available(macOS 14, *) {
+            return content.onKeyPress(key, phases: .down, action: { keyPress in
+                switch action(keyPress.modifiers) {
+                case .handled: return .handled
+                case .ignored: return .ignored
+                }
+            })
+        } else {
+            return content
+        }
+        #else
+        return content
+        #endif
+    }
 }
 
 enum BackportVisibility {