AX Agent 실행 마감 helper 통합과 계획 노출 최소화

- send와 regenerate가 같은 실행/예외/취소/최종 커밋/후처리 helper를 타도록 ExecutePreparedTurnAsync 추가

- 계획 이벤트는 기본적으로 얇은 요약 pill만 노출하고 debug에서만 큰 카드가 보이도록 조정

- README와 DEVELOPMENT 문서에 2026-04-05 18:08 (KST) 기준 이력 반영

- 검증: dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify\\ -p:IntermediateOutputPath=obj\\verify\\ (경고 0 / 오류 0)

src/AxCopilot/Views/ChatWindow.xaml.cs

@@ -8372,30 +8372,17 @@ public partial class ChatWindow : Window
                 }
             }
 
-            var response = await _chatEngine.ExecutePreparedAsync(
+            var executionOutcome = await ExecutePreparedTurnAsync(
+                conv,
+                runTab,
+                originTab,
                 preparedExecution,
-                (messages, token) => RunAgentLoopAsync(runTab, originTab, conv, messages, token),
-                (messages, token) => _llm.SendAsync(messages.ToList(), token),
-                _streamCts.Token);
-            assistantContent = response;
-            StopAiIconPulse();
-            _cachedStreamContent = response;
-
-            draftSucceeded = true;
-        }
-        catch (OperationCanceledException)
-        {
-            var finalized = _chatEngine.FinalizeExecutionContent(assistantContent, cancelled: true);
-            assistantContent = finalized.Content;
-            draftCancelled = finalized.Cancelled;
-            draftFailure = finalized.FailureReason;
-        }
-        catch (Exception ex)
-        {
-            var finalized = _chatEngine.FinalizeExecutionContent(assistantContent, ex);
-            assistantContent = finalized.Content;
-            ShowToast("실패한 요청은 작업 요약에서 다시 시도할 수 있습니다.", "\uE783", 2600);
-            draftFailure = finalized.FailureReason;
+                "응답 생성 중...");
+            conv = executionOutcome.Conversation;
+            assistantContent = executionOutcome.AssistantContent;
+            draftSucceeded = executionOutcome.DraftSucceeded;
+            draftCancelled = executionOutcome.DraftCancelled;
+            draftFailure = executionOutcome.DraftFailure;
         }
         finally
         {
@@ -8405,18 +8392,7 @@ public partial class ChatWindow : Window
                 _llm.ClearRouteOverride();
                 UpdateModelLabel();
             }
-            ResetStreamingUiState();
         }
-
-        lock (_convLock)
-        {
-            var session = ChatSession;
-            assistantContent = _chatEngine.FinalizeAssistantTurn(session, conv, runTab, assistantContent, _storage);
-            _currentConversation = session?.CurrentConversation ?? conv;
-            conv = _currentConversation!;
-        }
-
-        FinalizeConversationTurn(originTab, conv);
         FinalizeQueuedDraft(originTab, queuedDraftId, draftSucceeded, draftCancelled, draftFailure);
     }
 
@@ -8553,6 +8529,87 @@ public partial class ChatWindow : Window
             _ = Dispatcher.BeginInvoke(new Action(() => StartNextQueuedDraftIfAny()), DispatcherPriority.Background);
     }
 
+    private sealed record PreparedTurnOutcome(
+        ChatConversation Conversation,
+        string AssistantContent,
+        bool DraftSucceeded,
+        bool DraftCancelled,
+        string? DraftFailure);
+
+    private async Task<PreparedTurnOutcome> ExecutePreparedTurnAsync(
+        ChatConversation conversation,
+        string runTab,
+        string rememberTab,
+        AxAgentExecutionEngine.PreparedExecution preparedExecution,
+        string busyStatus)
+    {
+        _isStreaming = true;
+        _streamRunTab = runTab;
+        BtnSend.IsEnabled = false;
+        BtnSend.Visibility = Visibility.Collapsed;
+        BtnStop.Visibility = Visibility.Visible;
+        if (runTab == "Cowork" || runTab == "Code")
+            BtnPause.Visibility = Visibility.Visible;
+        _streamCts = new CancellationTokenSource();
+        ForceScrollToEnd();
+
+        var assistantContent = string.Empty;
+        var draftSucceeded = false;
+        var draftCancelled = false;
+        string? draftFailure = null;
+
+        _activeStreamText = null;
+        _cachedStreamContent = "";
+        _displayedLength = 0;
+        _cursorVisible = true;
+        _aiIconPulseStopped = false;
+        _streamStartTime = DateTime.UtcNow;
+        _elapsedTimer.Start();
+        SetStatus(busyStatus, spinning: true);
+
+        try
+        {
+            var response = await _chatEngine.ExecutePreparedAsync(
+                preparedExecution,
+                (messages, token) => RunAgentLoopAsync(runTab, rememberTab, conversation, messages, token),
+                (messages, token) => _llm.SendAsync(messages.ToList(), token),
+                _streamCts.Token);
+            assistantContent = response;
+            StopAiIconPulse();
+            _cachedStreamContent = response;
+            draftSucceeded = true;
+        }
+        catch (OperationCanceledException)
+        {
+            var finalized = _chatEngine.FinalizeExecutionContent(assistantContent, cancelled: true);
+            assistantContent = finalized.Content;
+            draftCancelled = finalized.Cancelled;
+            draftFailure = finalized.FailureReason;
+        }
+        catch (Exception ex)
+        {
+            var finalized = _chatEngine.FinalizeExecutionContent(assistantContent, ex);
+            assistantContent = finalized.Content;
+            draftFailure = finalized.FailureReason;
+            ShowToast("실패한 요청은 작업 요약에서 다시 시도할 수 있습니다.", "\uE783", 2600);
+        }
+        finally
+        {
+            ResetStreamingUiState();
+        }
+
+        lock (_convLock)
+        {
+            var session = ChatSession;
+            assistantContent = _chatEngine.FinalizeAssistantTurn(session, conversation, runTab, assistantContent, _storage);
+            _currentConversation = session?.CurrentConversation ?? conversation;
+            conversation = _currentConversation!;
+        }
+
+        FinalizeConversationTurn(rememberTab, conversation);
+        return new PreparedTurnOutcome(conversation, assistantContent, draftSucceeded, draftCancelled, draftFailure);
+    }
+
     private void ScheduleExecutionHistoryRender(bool autoScroll = true)
     {
         _pendingExecutionHistoryAutoScroll |= autoScroll;
@@ -10287,10 +10344,29 @@ public partial class ChatWindow : Window
     {
         var logLevel = _settings.Settings.Llm.AgentLogLevel;
 
-        // Planning 이벤트는 단계 목록 카드로 별도 렌더링
+        // Planning 이벤트는 기본적으로 얇은 요약만 보이고, debug에서만 큰 카드로 펼칩니다.
         if (evt.Type == AgentEventType.Planning && evt.Steps is { Count: > 0 })
         {
-            AddPlanningCard(evt);
+            if (string.Equals(logLevel, "debug", StringComparison.OrdinalIgnoreCase))
+            {
+                AddPlanningCard(evt);
+            }
+            else
+            {
+                var compactPrimaryText = TryFindResource("PrimaryText") as Brush ?? Brushes.White;
+                var compactSecondaryText = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray;
+                var compactHintBg = TryFindResource("HintBackground") as Brush
+                             ?? new SolidColorBrush(Color.FromArgb(0x18, 0xFF, 0xFF, 0xFF));
+                var compactBorderBrush = TryFindResource("BorderColor") as Brush ?? Brushes.Gray;
+                var compactAccentBrush = TryFindResource("AccentColor") as Brush ?? Brushes.CornflowerBlue;
+                var summary = !string.IsNullOrWhiteSpace(evt.Summary)
+                    ? evt.Summary!
+                    : $"계획 {evt.Steps.Count}단계";
+                var pill = CreateCompactEventPill(summary, compactPrimaryText, compactSecondaryText, compactHintBg, compactBorderBrush, compactAccentBrush);
+                pill.Opacity = 0;
+                pill.BeginAnimation(UIElement.OpacityProperty, new DoubleAnimation(0, 1, TimeSpan.FromMilliseconds(160)));
+                MessagePanel.Children.Add(pill);
+            }
             return;
         }
 
@@ -10876,64 +10952,15 @@ public partial class ChatWindow : Window
     private async Task SendRegenerateAsync(ChatConversation conv)
     {
         var runTab = NormalizeTabName(conv.Tab);
-        _isStreaming = true;
-        _streamRunTab = runTab;
-        BtnSend.IsEnabled = false;
-        BtnSend.Visibility = Visibility.Collapsed;
-        BtnStop.Visibility = Visibility.Visible;
-        _streamCts = new CancellationTokenSource();
-        ForceScrollToEnd(); // 응답 시작 시 강제 하단 이동
-
-        var assistantContent = string.Empty;
-        _activeStreamText    = null;
-        _cachedStreamContent = "";
-        _displayedLength     = 0;
-        _cursorVisible       = true;
-        _aiIconPulseStopped  = false;
-        _streamStartTime = DateTime.UtcNow;
-        _elapsedTimer.Start();
-        SetStatus("에이전트 작업 중...", spinning: true);
-
-        try
-        {
-            List<ChatMessage> sendMessages;
-            AxAgentExecutionEngine.PreparedExecution preparedExecution;
-            lock (_convLock)
-                preparedExecution = PrepareExecutionForConversation(conv, runTab, null);
-            var executionMode = preparedExecution.Mode;
-            sendMessages = preparedExecution.Messages;
-
-            var response = await _chatEngine.ExecutePreparedAsync(
-                preparedExecution,
-                (messages, token) => RunAgentLoopAsync(runTab, runTab, conv, messages, token),
-                (messages, token) => _llm.SendAsync(messages.ToList(), token),
-                _streamCts.Token);
-            assistantContent = response;
-            StopAiIconPulse();
-            _cachedStreamContent = response;
-        }
-        catch (OperationCanceledException)
-        {
-            assistantContent = _chatEngine.FinalizeExecutionContent(assistantContent, cancelled: true).Content;
-        }
-        catch (Exception ex)
-        {
-            assistantContent = _chatEngine.FinalizeExecutionContent(assistantContent, ex).Content;
-            ShowToast("실패한 요청은 작업 요약에서 다시 시도할 수 있습니다.", "\uE783", 2600);
-        }
-        finally
-        {
-            ResetStreamingUiState();
-        }
-
+        AxAgentExecutionEngine.PreparedExecution preparedExecution;
         lock (_convLock)
-        {
-            var session = ChatSession;
-            assistantContent = _chatEngine.FinalizeAssistantTurn(session, conv, runTab, assistantContent, _storage);
-            _currentConversation = session?.CurrentConversation ?? conv;
-            conv = _currentConversation!;
-        }
-        FinalizeConversationTurn(conv.Tab ?? _activeTab, conv);
+            preparedExecution = PrepareExecutionForConversation(conv, runTab, null);
+        await ExecutePreparedTurnAsync(
+            conv,
+            runTab,
+            conv.Tab ?? _activeTab,
+            preparedExecution,
+            "에이전트 작업 중...");
     }
 
     /// <summary>채팅 본문 폭을 세 탭에서 동일한 기준으로 맞춥니다.</summary>