하단 토큰 집계와 압축 표시 정확도 수정

- 유휴 전환 후 하단 상태바 전체 토큰 집계가 사라지지 않도록 대화 기준 합산 복원 경로 추가
- 컨텍스트 사용량 팝업에 마지막 실제 압축 before/after 및 누적 절감량 표시
- total_stats 이벤트가 진행 피드에 흡수되지 않고 전용 통계 카드로 다시 노출되게 수정
- 관련 README 및 개발 문서 이력 갱신

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/Services/Agent/AgentTranscriptDisplayCatalog.cs

@@ -32,7 +32,7 @@ internal static class AgentTranscriptDisplayCatalog
 
             "build_run" => "빌드/실행",
             "test_loop" => "테스트 루프",
-            "dev_env_detect" => "개발 환경 점검",
+            "dev_env_detect" => "개발 환경 감지",
             "git_tool" => "Git",
             "diff_tool" => "Diff",
             "diff_preview" => "Diff 미리보기",

src/AxCopilot/Views/ChatWindow.AgentEventRendering.cs

@@ -121,6 +121,10 @@ public partial class ChatWindow
 
     private static bool IsProcessFeedEvent(AgentEvent evt)
     {
+        if (evt.Type == AgentEventType.StepDone
+            && string.Equals(evt.ToolName, "total_stats", StringComparison.OrdinalIgnoreCase))
+            return false;
+
         return evt.Type is AgentEventType.Planning
             or AgentEventType.StepStart
             or AgentEventType.StepDone

src/AxCopilot/Views/ChatWindow.ContextUsagePresentation.cs

@@ -52,7 +52,7 @@ public partial class ChatWindow
         else if (usageRatio >= triggerRatio)
         {
             progressBrush = Brushes.DarkOrange;
-            summary = llm.EnableProactiveContextCompact ? "곧 자동 압축" : "압축 임계 도달";
+            summary = llm.EnableProactiveContextCompact ? "곧 자동 압축" : "압축 한계 도달";
             compactLabel = "압축 권장";
         }
         else if (usageRatio >= triggerRatio * 0.7)
@@ -67,6 +67,17 @@ public partial class ChatWindow
             compactLabel = "압축";
         }
 
+        string detailText;
+        if (_lastCompactionAt.HasValue && _lastCompactionBeforeTokens.HasValue && _lastCompactionAfterTokens.HasValue)
+        {
+            var compactType = _lastCompactionWasAutomatic ? "자동" : "수동";
+            detailText = $"{compactType} 압축 {Services.TokenEstimator.Format(_lastCompactionBeforeTokens.Value)} → {Services.TokenEstimator.Format(_lastCompactionAfterTokens.Value)}";
+        }
+        else
+        {
+            detailText = $"자동 압축 시작 {triggerPercent}%";
+        }
+
         TokenUsageArc.Stroke = progressBrush;
         TokenUsageThresholdMarker.Fill = progressBrush;
         var percentText = $"{Math.Round(usageRatio * 100):0}%";
@@ -80,9 +91,13 @@ public partial class ChatWindow
         if (TokenUsagePopupUsage != null)
             TokenUsagePopupUsage.Text = $"{Services.TokenEstimator.Format(currentTokens)}/{Services.TokenEstimator.Format(maxContextTokens)}";
         if (TokenUsagePopupDetail != null)
-            TokenUsagePopupDetail.Text = _pendingPostCompaction ? "compact 후 첫 응답 대기 중" : $"자동 압축 시작 {triggerPercent}%";
+            TokenUsagePopupDetail.Text = _pendingPostCompaction
+                ? $"compact 후 첫 응답 대기 중 · {detailText}"
+                : detailText;
         if (TokenUsagePopupCompact != null)
-            TokenUsagePopupCompact.Text = "AX Agent가 컨텍스트를 자동으로 관리합니다";
+            TokenUsagePopupCompact.Text = _sessionCompactionCount > 0
+                ? $"누적 압축 {_sessionCompactionCount}회 · 절감 {FormatTokenCount(_sessionCompactionSavedTokens)} tokens"
+                : "AX Agent가 컨텍스트를 자동으로 관리합니다";
 
         TokenUsageCard.ToolTip = null;
 

src/AxCopilot/Views/ChatWindow.StatusPresentation.cs

@@ -136,10 +136,50 @@ public partial class ChatWindow
         if (IsDecisionApproved(summary))
             return "계획 승인됨 · 실행 시작";
         if (IsDecisionRejected(summary))
-            return "계획 반려됨 · 계획 재작성";
+            return "계획 반려됨 · 계획 수정";
         return string.IsNullOrWhiteSpace(summary) ? "사용자 의사결정 대기 중" : TruncateForStatus(summary);
     }
 
+    private (int PromptTokens, int CompletionTokens) GetConversationTokenAggregate()
+    {
+        lock (_convLock)
+        {
+            if (_currentConversation?.Messages == null || _currentConversation.Messages.Count == 0)
+                return (0, 0);
+
+            var prompt = 0;
+            var completion = 0;
+            foreach (var message in _currentConversation.Messages)
+            {
+                prompt += Math.Max(0, message.PromptTokens);
+                completion += Math.Max(0, message.CompletionTokens);
+            }
+
+            return (prompt, completion);
+        }
+    }
+
+    private void RefreshStatusTokenAggregate()
+    {
+        var promptTokens = Math.Max(0, _agentCumulativeInputTokens);
+        var completionTokens = Math.Max(0, _agentCumulativeOutputTokens);
+
+        if (promptTokens == 0 && completionTokens == 0)
+        {
+            var aggregate = GetConversationTokenAggregate();
+            promptTokens = aggregate.PromptTokens;
+            completionTokens = aggregate.CompletionTokens;
+        }
+
+        if (promptTokens > 0 || completionTokens > 0)
+            UpdateStatusTokens(promptTokens, completionTokens);
+        else if (StatusTokens != null)
+        {
+            StatusTokens.Text = "";
+            StatusTokens.Visibility = Visibility.Collapsed;
+        }
+    }
+
     private void SetStatusIdle()
     {
         StopStatusAnimation();
@@ -150,11 +190,8 @@ public partial class ChatWindow
             StatusElapsed.Text = "";
             StatusElapsed.Visibility = Visibility.Collapsed;
         }
-        if (StatusTokens != null)
-        {
-            StatusTokens.Text = "";
-            StatusTokens.Visibility = Visibility.Collapsed;
-        }
+
+        RefreshStatusTokenAggregate();
         RefreshContextUsageVisual();
         ScheduleGitBranchRefresh(250);
     }
@@ -173,6 +210,7 @@ public partial class ChatWindow
         StatusTokens.Visibility = Visibility.Visible;
         RefreshContextUsageVisual();
     }
+
     private void UpdateStatusBar(AgentEvent evt)
     {
         var toolLabel = evt.ToolName switch
@@ -200,16 +238,16 @@ public partial class ChatWindow
                 SetStatus("생각 중...", spinning: true);
                 break;
             case AgentEventType.Planning:
-                SetStatus($"계획 수립 중 — {evt.StepTotal}단계", spinning: true);
+                SetStatus($"계획 정리 중... {evt.StepTotal}단계", spinning: true);
                 break;
             case AgentEventType.PermissionRequest:
-                SetStatus($"권한 확인 중: {toolLabel}", spinning: false);
+                SetStatus($"권한 확인 중 · {toolLabel}", spinning: false);
                 break;
             case AgentEventType.PermissionGranted:
-                SetStatus($"권한 승인됨: {toolLabel}", spinning: false);
+                SetStatus($"권한 승인됨 · {toolLabel}", spinning: false);
                 break;
             case AgentEventType.PermissionDenied:
-                SetStatus($"권한 거부됨: {toolLabel}", spinning: false);
+                SetStatus($"권한 거부됨 · {toolLabel}", spinning: false);
                 StopStatusAnimation();
                 break;
             case AgentEventType.Decision:
@@ -232,7 +270,7 @@ public partial class ChatWindow
             case AgentEventType.SkillCall:
                 if (!isDebugLogLevel)
                     break;
-                SetStatus($"스킬 실행 중: {TruncateForStatus(evt.Summary)}", spinning: true);
+                SetStatus($"스킬 실행 중 · {TruncateForStatus(evt.Summary)}", spinning: true);
                 break;
             case AgentEventType.Complete:
                 SetStatus("작업 완료", spinning: false);
@@ -245,12 +283,12 @@ public partial class ChatWindow
             case AgentEventType.Paused:
                 if (!isDebugLogLevel)
                     break;
-                SetStatus("⏸ 일시정지", spinning: false);
+                SetStatus("일시정지", spinning: false);
                 break;
             case AgentEventType.Resumed:
                 if (!isDebugLogLevel)
                     break;
-                SetStatus("▶ 재개됨", spinning: true);
+                SetStatus("재개", spinning: true);
                 break;
         }
     }