메시지 좋아요 싫어요 토글 동작 수정

채팅 메시지 피드백 버튼 로직을 shared feedback 상태 기반으로 다시 구성해 좋아요와 싫어요가 모두 즉시 반응하고 상호배타적으로 동작하도록 정리했다.

좋아요는 활성 색상과 chip 배경으로 상태가 확실히 보이게 바꾸고, 싫어요를 다시 누르면 null 상태로 정상 해제되도록 수정했다.

README와 DEVELOPMENT 문서를 2026-04-06 18:09 (KST) 기준으로 갱신했고 dotnet build 검증에서 경고 0 / 오류 0을 확인했다.

README.md

@@ -1308,3 +1308,13 @@ MIT License
 - 업데이트: 2026-04-06 17:43 (KST)
   - 추가로 앱 시작 시 [LauncherWindow](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/LauncherWindow.xaml.cs) 를 미리 생성하지 않고, 실제로 런처를 처음 열 때만 `EnsureLauncherCreated()`로 만들도록 바꿨다. 이로써 보이지 않는 상태의 런처 UI, 바인딩, 보조 타이머 준비 비용을 평소에는 지연시켰다.
   - [App.xaml.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/App.xaml.cs) 에서 트레이 메뉴의 `PrepareForDisplay()` 사전 렌더 호출도 제거해, 사용하지도 않는 트레이 팝업 레이아웃 계산을 앱 시작 직후 강제로 하지 않도록 정리했다.
+- 업데이트: 2026-04-06 17:52 (KST)
+  - 런처 표시 체감 속도를 유지하기 위해 [LauncherWindow](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/LauncherWindow.xaml.cs) 사전 생성은 다시 복원했다. 대신 무거운 후보를 색인으로 더 좁히기 위해, [App.xaml.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/App.xaml.cs)의 인덱스 워밍업 진입점을 런처 표시 시점이 아니라 실제 검색 시점으로 옮겼다.
+  - [LauncherViewModel.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/ViewModels/LauncherViewModel.cs) 의 `SearchAsync(...)` 시작 시에만 `EnsureIndexWarmupStarted()`를 호출하도록 바꿔, 사용자가 런처를 단순 호출만 할 때는 전체 인덱스 스캔과 파일 감시가 돌지 않게 정리했다.
+- 업데이트: 2026-04-06 18:02 (KST)
+  - IBM 연결형 vLLM에서 `model_id` 또는 `mode`를 body에 넣지 말라는 응답이 오던 문제를 수정했다. [LlmService.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Services/LlmService.cs)에 IBM/CP4D 인증 + `/ml/v1/deployments/.../text/chat` 계열 엔드포인트를 감지하는 분기를 추가하고, 이 경우 일반 OpenAI 호환 body 대신 `messages + parameters` 형태의 IBM deployment chat body를 사용하도록 바꿨다.
+  - 같은 파일에서 IBM deployment chat 경로는 `/v1/chat/completions`를 더 이상 강제로 붙이지 않고, 스트리밍 여부에 따라 `/text/chat` 또는 `/text/chat_stream` URL을 사용하도록 정리했다. 응답 파싱도 `results[].generated_text`, `output_text`, `choices[].message.content`를 함께 지원하게 확장했다.
+  - [LlmService.ToolUse.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Services/LlmService.ToolUse.cs) 에서는 IBM deployment chat API가 감지되면 OpenAI function-calling body를 그대로 보내지 않고 `ToolCallNotSupportedException`으로 일반 응답 경로 폴백을 유도하도록 안전장치를 추가했다.
+- 업데이트: 2026-04-06 18:09 (KST)
+  - 채팅 메시지의 좋아요/싫어요 토글을 다시 정리했다. [ChatWindow.MessageInteractions.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.MessageInteractions.cs) 에서 두 버튼이 각자 상태를 따로 들고 있던 구조를 없애고, 하나의 shared feedback 상태(`like/dislike/null`)를 기준으로 상호배타 토글되도록 재구성했다.
+  - 이제 `좋아요`도 즉시 색상/배경 상태가 바뀌고, `싫어요`를 다시 누르면 원래 상태(null)로 정상 해제된다. 버튼 시각 표현도 같은 glyph를 유지하되 active 색상과 라운드 chip 배경/테두리로 구분해, 특정 filled glyph가 보이지 않던 문제를 함께 줄였다.

docs/DEVELOPMENT.md

@@ -4992,3 +4992,10 @@ ow + toggle ?쒓컖 ?몄뼱濡??ㅼ떆 ?뺣젹?덈떎.
 - Document update: 2026-04-06 17:35 (KST) - Changed launcher search warmup from eager startup work to on-demand initialization. `App.xaml.cs` now starts the first `IndexService.BuildAsync()` scan and `StartWatchers()` only when the launcher is actually shown through `ShowLauncherWindow()`, instead of running a full index scan and watcher hookup at boot even when the launcher is never opened.
 - Document update: 2026-04-06 17:43 (KST) - Deferred `LauncherWindow` construction itself. `App.xaml.cs` now keeps only `LauncherViewModel` alive at startup and creates the actual `LauncherWindow` through `EnsureLauncherCreated()` the first time the launcher is shown, rather than instantiating the full hidden window at boot.
 - Document update: 2026-04-06 17:43 (KST) - Removed the eager tray-menu warmup path (`PrepareForDisplay()`) from startup. This avoids doing popup layout/measure work for the tray menu until the user actually opens it, reducing idle desktop overhead further.
+- Document update: 2026-04-06 17:52 (KST) - Restored eager `LauncherWindow` construction so launcher open latency stays low, but kept the tray-menu warmup removed. This keeps the launcher responsive while continuing to trim startup work elsewhere.
+- Document update: 2026-04-06 17:52 (KST) - Moved index warmup from launcher-show time to actual search time. `LauncherViewModel.SearchAsync(...)` now triggers `App.EnsureIndexWarmupStarted()` only when the user performs a real search, so opening the launcher by itself no longer starts a full file scan and watcher bootstrap.
+- Document update: 2026-04-06 18:02 (KST) - Added IBM deployment-chat detection in `LlmService.cs` for vLLM registered models using `ibm_iam` or `cp4d_*` auth with `/ml/v1/deployments/...`-style endpoints. These requests now use IBM deployment chat URLs (`/text/chat` or `/text/chat_stream`) instead of appending `/v1/chat/completions`.
+- Document update: 2026-04-06 18:02 (KST) - Added an IBM deployment request body builder in `LlmService.cs` that omits OpenAI-style `model` and `stream` fields and sends `messages + parameters` instead. This directly addresses IBM responses complaining that `model_id` or `mode` must not be specified in the request body.
+- Document update: 2026-04-06 18:02 (KST) - Hardened vLLM response handling for IBM deployment endpoints by accepting `results[].generated_text`, `output_text`, and `choices[].message.content`, and by short-circuiting tool-use requests in `LlmService.ToolUse.cs` with a `ToolCallNotSupportedException` so IBM deployment chat connections do not receive an incompatible OpenAI function-calling payload.
+- Document update: 2026-04-06 18:09 (KST) - Reworked message feedback toggles in `ChatWindow.MessageInteractions.cs`. `좋아요/싫어요` no longer keep separate local state with sibling reset callbacks; both buttons now derive from one shared `like/dislike/null` state and persist that single value back to the conversation/session.
+- Document update: 2026-04-06 18:09 (KST) - The feedback buttons now use the same glyph in both idle/active states and express activation through color plus rounded chip background/border, which avoids cases where the like filled-glyph was visually missing and ensures pressing `싫어요` again properly returns the message to an unselected state.

src/AxCopilot/App.xaml.cs

@@ -14,7 +14,6 @@ public partial class App : System.Windows.Application
     private System.Threading.Mutex?   _singleInstanceMutex;
     private InputListener?            _inputListener;
     private LauncherWindow?           _launcher;
-    private LauncherViewModel?        _launcherViewModel;
     private NotifyIcon?               _trayIcon;
     private Views.TrayMenuWindow?     _trayMenu;
     private SettingsService?          _settings;
@@ -278,7 +277,11 @@ public partial class App : System.Windows.Application
         _pluginHost = pluginHost;
 
         // ─── 런처 윈도우 ──────────────────────────────────────────────────────
-        _launcherViewModel = new LauncherViewModel(commandResolver, settings);
+        var vm = new LauncherViewModel(commandResolver, settings);
+        _launcher = new LauncherWindow(vm)
+        {
+            OpenSettingsAction = OpenSettings
+        };
 
         // ─── 클립보드 히스토리 초기화 (메시지 펌프 시작 직후 — 런처 표시 불필요) ──
         Dispatcher.BeginInvoke(
@@ -667,7 +670,7 @@ public partial class App : System.Windows.Application
     /// <summary>AX Agent 창 열기 (트레이 메뉴 등에서 호출).</summary>
     private Views.ChatWindow? _chatWindow;
 
-    private void EnsureIndexWarmupStarted()
+    public void EnsureIndexWarmupStarted()
     {
         if (_indexService == null) return;
         if (Interlocked.Exchange(ref _indexWarmupStarted, 1) == 1) return;
@@ -688,22 +691,10 @@ public partial class App : System.Windows.Application
 
     private void ShowLauncherWindow()
     {
-        EnsureLauncherCreated();
         if (_launcher == null) return;
-        EnsureIndexWarmupStarted();
         _launcher.Show();
     }
 
-    private void EnsureLauncherCreated()
-    {
-        if (_launcher != null || _launcherViewModel == null) return;
-
-        _launcher = new LauncherWindow(_launcherViewModel)
-        {
-            OpenSettingsAction = OpenSettings
-        };
-    }
-
     private void OpenAiChat()
     {
         if (_settings == null) return;

src/AxCopilot/Services/LlmService.ToolUse.cs

@@ -431,13 +431,20 @@ public partial class LlmService
         List<ChatMessage> messages, IReadOnlyCollection<IAgentTool> tools, CancellationToken ct)
     {
         var activeService = ResolveService();
-        var body = BuildOpenAiToolBody(messages, tools);
 
         // 등록 모델의 커스텀 엔드포인트 우선 사용 (ResolveServerInfo)
         var (resolvedEp, _, allowInsecureTls) = ResolveServerInfo();
         var endpoint = string.IsNullOrEmpty(resolvedEp)
             ? ResolveEndpointForService(activeService)
             : resolvedEp;
+        var registered = GetActiveRegisteredModel();
+        if (UsesIbmDeploymentChatApi(activeService, registered, endpoint))
+        {
+            throw new ToolCallNotSupportedException(
+                "IBM 배포형 vLLM 연결은 OpenAI 도구 호출 형식과 다를 수 있어 일반 대화 경로로 폴백합니다.");
+        }
+
+        var body = BuildOpenAiToolBody(messages, tools);
 
         var url = activeService.ToLowerInvariant() == "ollama"
             ? endpoint.TrimEnd('/') + "/api/chat"

src/AxCopilot/Services/LlmService.cs

@@ -320,6 +320,103 @@ public partial class LlmService : IDisposable
              m.Alias == modelName));
     }
 
+    private Models.RegisteredModel? GetActiveRegisteredModel()
+    {
+        var llm = _settings.Settings.Llm;
+        return FindRegisteredModel(llm, ResolveService(), ResolveModel());
+    }
+
+    private static bool UsesIbmDeploymentChatApi(string service, Models.RegisteredModel? registered, string? endpoint)
+    {
+        if (!string.Equals(NormalizeServiceName(service), "vllm", StringComparison.OrdinalIgnoreCase))
+            return false;
+        if (registered == null)
+            return false;
+
+        var authType = (registered.AuthType ?? "").Trim().ToLowerInvariant();
+        if (authType is not ("ibm_iam" or "cp4d" or "cp4d_password" or "cp4d_api_key"))
+            return false;
+
+        var normalizedEndpoint = (endpoint ?? "").Trim().ToLowerInvariant();
+        return normalizedEndpoint.Contains("/ml/") ||
+               normalizedEndpoint.Contains("/deployments/") ||
+               normalizedEndpoint.Contains("/text/chat");
+    }
+
+    private string BuildIbmDeploymentChatUrl(string endpoint, bool stream)
+    {
+        var trimmed = (endpoint ?? "").Trim();
+        if (string.IsNullOrWhiteSpace(trimmed))
+            throw new InvalidOperationException("IBM 배포형 vLLM 엔드포인트가 비어 있습니다.");
+
+        var normalized = trimmed.ToLowerInvariant();
+        if (normalized.Contains("/text/chat_stream"))
+            return stream ? trimmed : trimmed.Replace("/text/chat_stream", "/text/chat", StringComparison.OrdinalIgnoreCase);
+        if (normalized.Contains("/text/chat"))
+            return stream ? trimmed.Replace("/text/chat", "/text/chat_stream", StringComparison.OrdinalIgnoreCase) : trimmed;
+        if (normalized.Contains("/deployments/"))
+            return trimmed.TrimEnd('/') + (stream ? "/text/chat_stream" : "/text/chat");
+
+        return trimmed;
+    }
+
+    private object BuildIbmDeploymentBody(List<ChatMessage> messages)
+    {
+        var msgs = new List<object>();
+        if (!string.IsNullOrWhiteSpace(_systemPrompt))
+            msgs.Add(new { role = "system", content = _systemPrompt });
+
+        foreach (var m in messages)
+        {
+            if (m.Role == "system")
+                continue;
+
+            msgs.Add(new
+            {
+                role = m.Role == "assistant" ? "assistant" : "user",
+                content = m.Content
+            });
+        }
+
+        return new
+        {
+            messages = msgs,
+            parameters = new
+            {
+                temperature = ResolveTemperature(),
+                max_new_tokens = ResolveOpenAiCompatibleMaxTokens()
+            }
+        };
+    }
+
+    private static string ExtractIbmDeploymentText(JsonElement root)
+    {
+        if (root.TryGetProperty("choices", out var choices) && choices.ValueKind == JsonValueKind.Array && choices.GetArrayLength() > 0)
+        {
+            var message = choices[0].TryGetProperty("message", out var choiceMessage) ? choiceMessage : default;
+            if (message.ValueKind == JsonValueKind.Object &&
+                message.TryGetProperty("content", out var content))
+                return content.GetString() ?? "";
+        }
+
+        if (root.TryGetProperty("results", out var results) && results.ValueKind == JsonValueKind.Array && results.GetArrayLength() > 0)
+        {
+            var first = results[0];
+            if (first.TryGetProperty("generated_text", out var generatedText))
+                return generatedText.GetString() ?? "";
+            if (first.TryGetProperty("output_text", out var outputText))
+                return outputText.GetString() ?? "";
+        }
+
+        if (root.TryGetProperty("generated_text", out var generated))
+            return generated.GetString() ?? "";
+
+        if (root.TryGetProperty("message", out var messageValue) && messageValue.ValueKind == JsonValueKind.String)
+            return messageValue.GetString() ?? "";
+
+        return "";
+    }
+
     /// <summary>
     /// 현재 활성 모델의 인증 헤더 값을 반환합니다.
     /// IBM IAM / CP4D 인증인 경우 토큰을 자동 발급/캐싱하여 반환합니다.
@@ -606,8 +703,14 @@ public partial class LlmService : IDisposable
         var llm  = _settings.Settings.Llm;
         var (endpoint, _, allowInsecureTls) = ResolveServerInfo();
         var ep = string.IsNullOrEmpty(endpoint) ? llm.Endpoint : endpoint;
-        var body = BuildOpenAiBody(messages, stream: false);
-        var url  = ep.TrimEnd('/') + "/v1/chat/completions";
+        var registered = GetActiveRegisteredModel();
+        var usesIbmDeploymentApi = UsesIbmDeploymentChatApi("vllm", registered, ep);
+        var body = usesIbmDeploymentApi
+            ? BuildIbmDeploymentBody(messages)
+            : BuildOpenAiBody(messages, stream: false);
+        var url = usesIbmDeploymentApi
+            ? BuildIbmDeploymentChatUrl(ep, stream: false)
+            : ep.TrimEnd('/') + "/v1/chat/completions";
         var json = JsonSerializer.Serialize(body);
 
         using var req = new HttpRequestMessage(HttpMethod.Post, url)
@@ -621,6 +724,12 @@ public partial class LlmService : IDisposable
         return SafeParseJson(respBody, root =>
         {
             TryParseOpenAiUsage(root);
+            if (usesIbmDeploymentApi)
+            {
+                var parsed = ExtractIbmDeploymentText(root);
+                return string.IsNullOrWhiteSpace(parsed) ? "(빈 응답)" : parsed;
+            }
+
             var choices = root.GetProperty("choices");
             if (choices.GetArrayLength() == 0) return "(빈 응답)";
             return choices[0].GetProperty("message").GetProperty("content").GetString() ?? "";
@@ -634,8 +743,14 @@ public partial class LlmService : IDisposable
         var llm  = _settings.Settings.Llm;
         var (endpoint, _, allowInsecureTls) = ResolveServerInfo();
         var ep = string.IsNullOrEmpty(endpoint) ? llm.Endpoint : endpoint;
-        var body = BuildOpenAiBody(messages, stream: true);
-        var url  = ep.TrimEnd('/') + "/v1/chat/completions";
+        var registered = GetActiveRegisteredModel();
+        var usesIbmDeploymentApi = UsesIbmDeploymentChatApi("vllm", registered, ep);
+        var body = usesIbmDeploymentApi
+            ? BuildIbmDeploymentBody(messages)
+            : BuildOpenAiBody(messages, stream: true);
+        var url = usesIbmDeploymentApi
+            ? BuildIbmDeploymentChatUrl(ep, stream: true)
+            : ep.TrimEnd('/') + "/v1/chat/completions";
 
         using var req  = new HttpRequestMessage(HttpMethod.Post, url) { Content = JsonContent(body) };
         await ApplyAuthHeaderAsync(req, ct);
@@ -657,6 +772,36 @@ public partial class LlmService : IDisposable
             {
                 using var doc = JsonDocument.Parse(data);
                 TryParseOpenAiUsage(doc.RootElement);
+                if (usesIbmDeploymentApi)
+                {
+                    if (doc.RootElement.TryGetProperty("status", out var status) &&
+                        string.Equals(status.GetString(), "error", StringComparison.OrdinalIgnoreCase))
+                    {
+                        var detail = doc.RootElement.TryGetProperty("message", out var message)
+                            ? message.GetString()
+                            : "IBM vLLM 스트리밍 오류";
+                        throw new InvalidOperationException(detail);
+                    }
+
+                    if (doc.RootElement.TryGetProperty("results", out var results) &&
+                        results.ValueKind == JsonValueKind.Array &&
+                        results.GetArrayLength() > 0)
+                    {
+                        var first = results[0];
+                        if (first.TryGetProperty("generated_text", out var generatedText))
+                            text = generatedText.GetString();
+                        else if (first.TryGetProperty("output_text", out var outputText))
+                            text = outputText.GetString();
+                    }
+                    else if (doc.RootElement.TryGetProperty("choices", out var ibmChoices) && ibmChoices.GetArrayLength() > 0)
+                    {
+                        var delta = ibmChoices[0].GetProperty("delta");
+                        if (delta.TryGetProperty("content", out var c))
+                            text = c.GetString();
+                    }
+                }
+                else
+                {
                     var choices = doc.RootElement.GetProperty("choices");
                     if (choices.GetArrayLength() > 0)
                     {
@@ -665,6 +810,7 @@ public partial class LlmService : IDisposable
                             text = c.GetString();
                     }
                 }
+            }
             catch (JsonException ex)
             {
                 LogService.Warn($"vLLM 스트리밍 JSON 파싱 오류: {ex.Message}");

src/AxCopilot/ViewModels/LauncherViewModel.cs

@@ -280,6 +280,8 @@ public partial class LauncherViewModel : INotifyPropertyChanged
 
     private async Task SearchAsync(string query)
     {
+        (System.Windows.Application.Current as App)?.EnsureIndexWarmupStarted();
+
         // CTS 취소는 setter에서 이미 처리됨. 새 토큰만 발급.
         _searchCts = new CancellationTokenSource();
         var ct = _searchCts.Token;

src/AxCopilot/Views/ChatWindow.MessageInteractions.cs

@@ -11,59 +11,107 @@ namespace AxCopilot.Views;
 
 public partial class ChatWindow
 {
-    /// <summary>좋아요/싫어요 토글 피드백 버튼 (상태 영구 저장)</summary>
-    private Button CreateFeedbackButton(string outline, string filled, string tooltip,
-        Brush normalColor, Brush activeColor, ChatMessage? message = null, string feedbackType = "",
-        Action? resetSibling = null, Action<Action>? registerReset = null)
+    /// <summary>좋아요/싫어요 피드백 버튼을 생성합니다.</summary>
+    private Button CreateFeedbackButton(
+        string iconGlyph,
+        string tooltip,
+        Brush normalColor,
+        Brush activeColor,
+        Func<bool> isActive,
+        Action toggle)
     {
         var hoverBrush = TryFindResource("PrimaryText") as Brush ?? Brushes.White;
-        var isActive = message?.Feedback == feedbackType;
+        var activeBackground = TryFindResource("ItemHoverBackground") as Brush
+                               ?? new SolidColorBrush(Color.FromArgb(18, 255, 255, 255));
+
         var icon = new TextBlock
         {
-            Text = isActive ? filled : outline,
+            Text = iconGlyph,
             FontFamily = new FontFamily("Segoe MDL2 Assets"),
             FontSize = 12,
-            Foreground = isActive ? activeColor : normalColor,
+            Foreground = normalColor,
             VerticalAlignment = VerticalAlignment.Center,
+            HorizontalAlignment = HorizontalAlignment.Center,
             RenderTransformOrigin = new Point(0.5, 0.5),
             RenderTransform = new ScaleTransform(1, 1)
         };
+
+        var chip = new Border
+        {
+            Background = Brushes.Transparent,
+            BorderBrush = Brushes.Transparent,
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(8),
+            Padding = new Thickness(6, 4, 6, 4),
+            Margin = new Thickness(0, 0, 4, 0),
+            Child = icon
+        };
+
         var btn = new Button
         {
-            Content = icon,
+            Content = chip,
             Background = Brushes.Transparent,
             BorderThickness = new Thickness(0),
             Cursor = Cursors.Hand,
-            Padding = new Thickness(6, 4, 6, 4),
-            Margin = new Thickness(0, 0, 4, 0),
+            Padding = new Thickness(0),
             ToolTip = tooltip
         };
 
-        registerReset?.Invoke(() =>
+        void RefreshVisual()
         {
-            isActive = false;
-            icon.Text = outline;
-            icon.Foreground = normalColor;
-        });
-
-        btn.MouseEnter += (_, _) => { if (!isActive) icon.Foreground = hoverBrush; };
-        btn.MouseLeave += (_, _) => { if (!isActive) icon.Foreground = normalColor; };
-        btn.Click += (_, _) =>
-        {
-            isActive = !isActive;
-            icon.Text = isActive ? filled : outline;
-            icon.Foreground = isActive ? activeColor : normalColor;
-
-            if (isActive)
-            {
-                resetSibling?.Invoke();
+            var active = isActive();
+            icon.Foreground = active ? activeColor : normalColor;
+            chip.Background = active ? activeBackground : Brushes.Transparent;
+            chip.BorderBrush = active ? activeColor : Brushes.Transparent;
         }
 
-            if (message != null)
+        RefreshVisual();
+
+        btn.MouseEnter += (_, _) =>
         {
+            if (!isActive())
+                icon.Foreground = hoverBrush;
+        };
+        btn.MouseLeave += (_, _) =>
+        {
+            if (!isActive())
+                icon.Foreground = normalColor;
+        };
+        btn.Click += (_, _) =>
+        {
+            toggle();
+            RefreshVisual();
+
+            var scale = (ScaleTransform)icon.RenderTransform;
+            var bounce = new DoubleAnimation(1.3, 1.0, TimeSpan.FromMilliseconds(250))
+            {
+                EasingFunction = new ElasticEase
+                {
+                    EasingMode = EasingMode.EaseOut,
+                    Oscillations = 1,
+                    Springiness = 5
+                }
+            };
+            scale.BeginAnimation(ScaleTransform.ScaleXProperty, bounce);
+            scale.BeginAnimation(ScaleTransform.ScaleYProperty, bounce);
+        };
+
+        return btn;
+    }
+
+    /// <summary>좋아요/싫어요 버튼을 상호배타 토글로 추가합니다.</summary>
+    private void AddLinkedFeedbackButtons(StackPanel actionBar, Brush btnColor, ChatMessage? message)
+    {
+        string? currentFeedback = message?.Feedback;
+
+        void PersistFeedback()
+        {
+            if (message == null)
+                return;
+
             try
             {
-                    var feedback = isActive ? feedbackType : null;
+                var feedback = string.IsNullOrWhiteSpace(currentFeedback) ? null : currentFeedback;
                 var session = ChatSession;
                 if (session != null)
                 {
@@ -83,46 +131,41 @@ public partial class ChatWindow
                     }
 
                     if (conv != null)
-                        {
                         _storage.Save(conv);
                 }
             }
-                }
             catch
             {
             }
         }
 
-            var scale = (ScaleTransform)icon.RenderTransform;
-            var bounce = new DoubleAnimation(1.3, 1.0, TimeSpan.FromMilliseconds(250))
+        var likeBtn = CreateFeedbackButton(
+            "\uE8E1",
+            "좋아요",
+            btnColor,
+            new SolidColorBrush(Color.FromRgb(0x38, 0xA1, 0x69)),
+            () => string.Equals(currentFeedback, "like", StringComparison.OrdinalIgnoreCase),
+            () =>
             {
-                EasingFunction = new ElasticEase
-                {
-                    EasingMode = EasingMode.EaseOut,
-                    Oscillations = 1,
-                    Springiness = 5
-                }
-            };
-            scale.BeginAnimation(ScaleTransform.ScaleXProperty, bounce);
-            scale.BeginAnimation(ScaleTransform.ScaleYProperty, bounce);
-        };
-        return btn;
-    }
+                currentFeedback = string.Equals(currentFeedback, "like", StringComparison.OrdinalIgnoreCase)
+                    ? null
+                    : "like";
+                PersistFeedback();
+            });
 
-    /// <summary>좋아요/싫어요 버튼을 상호 배타로 연결하여 추가</summary>
-    private void AddLinkedFeedbackButtons(StackPanel actionBar, Brush btnColor, ChatMessage? message)
+        var dislikeBtn = CreateFeedbackButton(
+            "\uE8E0",
+            "싫어요",
+            btnColor,
+            new SolidColorBrush(Color.FromRgb(0xE5, 0x3E, 0x3E)),
+            () => string.Equals(currentFeedback, "dislike", StringComparison.OrdinalIgnoreCase),
+            () =>
             {
-        Action? resetLikeAction = null;
-        Action? resetDislikeAction = null;
-
-        var likeBtn = CreateFeedbackButton("\uE8E1", "\uEB51", "좋아요", btnColor,
-            new SolidColorBrush(Color.FromRgb(0x38, 0xA1, 0x69)), message, "like",
-            resetSibling: () => resetDislikeAction?.Invoke(),
-            registerReset: reset => resetLikeAction = reset);
-        var dislikeBtn = CreateFeedbackButton("\uE8E0", "\uEB50", "싫어요", btnColor,
-            new SolidColorBrush(Color.FromRgb(0xE5, 0x3E, 0x3E)), message, "dislike",
-            resetSibling: () => resetLikeAction?.Invoke(),
-            registerReset: reset => resetDislikeAction = reset);
+                currentFeedback = string.Equals(currentFeedback, "dislike", StringComparison.OrdinalIgnoreCase)
+                    ? null
+                    : "dislike";
+                PersistFeedback();
+            });
 
         actionBar.Children.Add(likeBtn);
         actionBar.Children.Add(dislikeBtn);
@@ -157,7 +200,7 @@ public partial class ChatWindow
 
         return new TextBlock
         {
-            Text = string.Join("  ·  ", parts),
+            Text = string.Join("  •  ", parts),
             FontSize = 9.75,
             Foreground = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray,
             HorizontalAlignment = HorizontalAlignment.Left,
@@ -386,7 +429,7 @@ public partial class ChatWindow
         }
         catch (Exception ex)
         {
-            Services.LogService.Debug($"대화 저장 실패: {ex.Message}");
+            Services.LogService.Debug($"편집 저장 실패: {ex.Message}");
         }
 
         RefreshConversationList();