compaction improvements

packages/tui/internal/app/app.go

@@ -653,6 +653,9 @@ func getDefaultModel(
 }
 
 func (a *App) IsBusy() bool {
+	if a.Session.Time.Compacting > 0 {
+		return true
+	}
 	if len(a.Messages) == 0 {
 		return false
 	}

packages/tui/internal/components/chat/editor.go

@@ -385,6 +385,9 @@ func (m *editorComponent) Content() string {
 	} else if m.app.IsBusy() {
 		keyText := m.getInterruptKeyText()
 		status := "working"
+		if m.app.Session.Time.Compacting > 0 {
+			status = "compacting"
+		}
 		if m.app.CurrentPermission.ID != "" {
 			status = "waiting for permission"
 		}

packages/tui/internal/components/chat/messages.go

@@ -365,6 +365,9 @@ func (m *messagesComponent) renderView() tea.Cmd {
 		lastAssistantMessage := "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
 		for _, msg := range slices.Backward(m.app.Messages) {
 			if assistant, ok := msg.Info.(opencode.AssistantMessage); ok {
+				if assistant.Time.Completed > 0 {
+					break
+				}
 				lastAssistantMessage = assistant.ID
 				break
 			}
@@ -475,6 +478,9 @@ func (m *messagesComponent) renderView() tea.Cmd {
 				}
 
 			case opencode.AssistantMessage:
+				if casted.Summary {
+					continue
+				}
 				if casted.ID == m.app.Session.Revert.MessageID {
 					reverted = true
 					revertedMessageCount = 1

packages/tui/internal/tui/tui.go

@@ -592,10 +592,40 @@ func (a Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			}
 
 			if matchIndex == -1 {
-				a.app.Messages = append(a.app.Messages, app.Message{
+				// Extract the new message ID
+				var newMessageID string
+				switch casted := msg.Properties.Info.AsUnion().(type) {
+				case opencode.UserMessage:
+					newMessageID = casted.ID
+				case opencode.AssistantMessage:
+					newMessageID = casted.ID
+				}
+
+				// Find the correct insertion index by scanning backwards
+				// Most messages are added to the end, so start from the end
+				insertIndex := len(a.app.Messages)
+				for i := len(a.app.Messages) - 1; i >= 0; i-- {
+					var existingID string
+					switch casted := a.app.Messages[i].Info.(type) {
+					case opencode.UserMessage:
+						existingID = casted.ID
+					case opencode.AssistantMessage:
+						existingID = casted.ID
+					}
+					if existingID < newMessageID {
+						insertIndex = i + 1
+						break
+					}
+				}
+
+				// Create the new message
+				newMessage := app.Message{
 					Info:  msg.Properties.Info.AsUnion(),
 					Parts: []opencode.PartUnion{},
-				})
+				}
+
+				// Insert at the correct position
+				a.app.Messages = append(a.app.Messages[:insertIndex], append([]app.Message{newMessage}, a.app.Messages[insertIndex:]...)...)
 			}
 		}
 	case opencode.EventListResponseEventPermissionUpdated:
@@ -627,6 +657,10 @@ func (a Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			slog.Error("Server error", "name", err.Name, "message", err.Data.Message)
 			return a, toast.NewErrorToast(err.Data.Message, toast.WithTitle(string(err.Name)))
 		}
+	case opencode.EventListResponseEventSessionCompacted:
+		if msg.Properties.SessionID == a.app.Session.ID {
+			return a, toast.NewSuccessToast("Session compacted successfully")
+		}
 	case tea.WindowSizeMsg:
 		msg.Height -= 2 // Make space for the status bar
 		a.width, a.height = msg.Width, msg.Height