From f380518919ee0f8305c8f0ccb8d5986913913d9c Mon Sep 17 00:00:00 2001
From: Yun Chan <yunchan@twentyoz.kr>
Date: Sun, 16 Aug 2026 08:46:54 +0900
Subject: [PATCH] =?UTF-8?q?=EB=8D=B0=EC=8A=A4=ED=81=AC=ED=86=B1=20T3=20?=
 =?UTF-8?q?=EC=9E=94=EC=97=AC=20=EC=99=84=EC=84=B1=20+=20=EC=8A=A4?=
 =?UTF-8?q?=ED=83=80=EC=9D=BC=20=ED=8F=B4=EB=A6=AC=EC=8B=9C:=20=EB=8F=84?=
 =?UTF-8?q?=EB=A9=94=EC=9D=B8=20=EB=9D=BC=EC=9A=B0=ED=8C=85(WorkspaceRouti?=
 =?UTF-8?q?ngRules=20=EC=9E=90=EB=8F=99=20=EC=9B=8C=ED=81=AC=EC=8A=A4?=
 =?UTF-8?q?=ED=8E=98=EC=9D=B4=EC=8A=A4=20=EC=A0=84=ED=99=98),=20=ED=83=AD?=
 =?UTF-8?q?=20=EC=95=84=EC=B9=B4=EC=9D=B4=EB=B8=8C(TabArchive=20=EC=98=81?=
 =?UTF-8?q?=EC=86=8D=C2=B7=ED=8C=94=EB=A0=88=ED=8A=B8=20=EB=B3=B5=EA=B5=AC?=
 =?UTF-8?q?),=20=ED=8E=98=EC=9D=B4=EC=A7=80=20=EC=95=A1=EC=85=98(=ED=9D=91?=
 =?UTF-8?q?=EB=B0=B1/=EC=84=B8=ED=94=BC=EC=95=84=20=ED=95=84=ED=84=B0),=20?=
 =?UTF-8?q?=EB=85=B8=ED=8A=B8=20=ED=8C=A8=EB=84=90(NotesStore+=ED=94=8C?=
 =?UTF-8?q?=EB=9D=BC=EC=9D=B4=EC=95=84=EC=9B=83),=20=EC=BB=B4=ED=8C=A9?=
 =?UTF-8?q?=ED=8A=B8=20=EB=AA=A8=EB=93=9C(=ED=81=AC=EB=A1=AC=20=EC=88=A8?=
 =?UTF-8?q?=EA=B9=80+=EC=97=A3=EC=A7=80=20=ED=98=B8=EB=B2=84).=20=EC=8A=A4?=
 =?UTF-8?q?=ED=83=80=EC=9D=BC:=20=ED=95=9C=EA=B5=AD=EC=96=B4=20=ED=8F=B0?=
 =?UTF-8?q?=ED=8A=B8=20=ED=8F=B4=EB=B0=B1,=20=EC=95=94=EC=8B=9C=20?=
 =?UTF-8?q?=ED=8F=B0=ED=8A=B8=20=ED=86=B5=EC=9D=BC,=20=EB=8B=A4=ED=81=AC?=
 =?UTF-8?q?=20=ED=88=B4=ED=8C=81,=20=ED=85=8D=EC=8A=A4=ED=8A=B8=20?=
 =?UTF-8?q?=EB=8C=80=EB=B9=84=20=EC=83=81=ED=96=A5.=20UpdateNavState=20dis?=
 =?UTF-8?q?pose=20=EA=B0=80=EB=93=9C.=20164/164=20GREEN=20+=20=EC=8B=A4?=
 =?UTF-8?q?=EC=B0=BD=20=EC=8A=A4=ED=81=AC=EB=A6=B0=EC=83=B7=20=EA=B2=80?=
 =?UTF-8?q?=EC=A6=9D?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 IMPLEMENTATION_AUDIT.md                       |  14 +-
 .../Browser/Features/CommandPalette.cs        |  21 ++-
 VideoDownloader.App/MainWindow.xaml           |  24 ++-
 VideoDownloader.App/MainWindow.xaml.cs        | 159 +++++++++++++++++-
 VideoDownloader.App/Themes/Dark.xaml          |   6 +-
 VideoDownloader.App/Themes/Light.xaml         |   4 +-
 VideoDownloader.App/Themes/Shared.xaml        |  17 +-
 VideoDownloader.Browser/NotesStore.cs         |  63 +++++++
 VideoDownloader.Browser/TabArchive.cs         |  63 +++++++
 .../WorkspaceRoutingRules.cs                  |  65 +++++++
 .../Browser/DesktopRemainderTests.cs          | 130 ++++++++++++++
 .../E2E/MainWindowSmokeE2ETests.cs            |  52 +++++-
 12 files changed, 594 insertions(+), 24 deletions(-)
 create mode 100644 VideoDownloader.Browser/NotesStore.cs
 create mode 100644 VideoDownloader.Browser/TabArchive.cs
 create mode 100644 VideoDownloader.Browser/WorkspaceRoutingRules.cs
 create mode 100644 VideoDownloader.Tests/Browser/DesktopRemainderTests.cs

diff --git a/IMPLEMENTATION_AUDIT.md b/IMPLEMENTATION_AUDIT.md
index c077b3f..3025a27 100644
--- a/IMPLEMENTATION_AUDIT.md
+++ b/IMPLEMENTATION_AUDIT.md
@@ -58,7 +58,7 @@
 | 항목 | 구현 | 증거 |
 |---|---|---|
 | T2-10 미디어 재생목록 | ✅ 감지 미디어 자동 적재, 플라이아웃, 플레이어 창(native+hls.js+dash.js), 자동 다음, JSON 영속 | `MediaPlaylist.cs` · `PlayerWindow.cs` + 테스트 |
-| T3-1 워크스페이스 | ✅ 저장/전환 | `TabManagerWorkspaceExtensions` + 테스트 |
+| T3-1 워크스페이스 + 도메인 라우팅 | ✅ 저장/전환 + WorkspaceRoutingRules(도메인→워크스페이스, 주소창 이동 시 자동 전환, 팔레트로 규칙 등록) | `TabManagerWorkspaceExtensions` + `DesktopRemainderTests` 라우팅 2건(www/서브도메인 매칭·영속) |
 | T3-3 컨테이너/InPrivate | ✅ IsInPrivateModeEnabled 탭 | `OpenInPrivateTab` |
 | T3-4 빠른 찾기 `/` | ✅ | `MainWindow` 단축키 |
 | T3-5 컨텍스트 메뉴 전면 커스터마이징 | ✅ WPF 메뉴 + SelectedCommandId | `TabViewService` |
@@ -75,11 +75,15 @@
 | T3-14 추적 방지 카운터 | ✅ TrackerBlocklist(20개 도메인, 서브도메인 매칭) + WebResourceRequested 차단(204) + TrackerCounter + 실드 배지·도메인 팝업 | `TrackerBlockTests` 8건 + E2E(실제 WebView2 에서 2개 스크립트 차단·집계, 정상 도메인 통과) |
 | T3-15 주소창 진행 바 + 파라미터 제거 복사 | ✅ NavProgressTracker(전 탭 집계 INPC) → 주소창 하단 인디케이터 + 주소창 우클릭 "파라미터 제거 후 복사"(UrlCleaner) | `UrlCleanerTests`/`NavProgressTrackerTests` 13건 |
 
-### T3 중 명시적 미구현 (계획 내 후순위/선택)
+### 3차 완성 (T3 잔여 + 스타일)
 
-- T3-2 Auto-Archive 캐던스 — 닫힘 스택(25개)+복원이 커버(아카이브 자동화는 미차용)
-- T3-12 노트 패널 — 계획 자체가 "후순위" 명시
-- T3-13 컴팩트 모드 — F11 전체화면이 동등 커버
+| 항목 | 구현 | 증거 |
+|---|---|---|
+| T3-2 탭 아카이브 | ✅ TabArchive(닫힘 이력 JSON 영속, 500 상한, 연속 중복 제목 갱신, 검색) + 탭 닫힘 배선 + 팔레트 "아카이브에서 열기" | `DesktopRemainderTests` 3건 + 스모크 E2E(URL 탭 닫음 → 아카이브 기록 실증) |
+| T3-6 페이지 액션 | ✅ BoostSettings.PageFilter(흑백/세피아) → CSS 필터 주입, 팔레트 명령 | `DesktopRemainderTests` 3건(RED→GREEN) + 스모크 E2E(로컬 HTTP 문서에서 적용→부스트 저장 실증) |
+| T3-12 노트 패널 | ✅ NotesStore(추가·검색·삭제·영속) + 노트 플라이아웃(Ctrl+Alt+N) + "현재 페이지 추가" | `DesktopRemainderTests` 2건 + 스모크 E2E + 실창 스크린샷 |
+| T3-13 컴팩트 모드 | ✅ Ctrl+Shift+M 크롬 자동 숨김 + 상단 엣지(4px) 호버 복원 | 스모크 E2E(행 높이 0→복원) + 실창 스크린샷 |
+| 스타일 폴리시 | ✅ 폰트 폴백(한국어 맑은 고딕 포함) + 암시 TextBlock 폰트 통일 + 다크 ToolTip + 텍스트 계층 대비 상향(Secondary/Muted/Border) + 상태바 가독성 + 다이얼 페이지 타이포 | 실창 스크린샷 검증(다이얼/노트/컴팩트) |
 
 ### 재구성 (사용자 지시 "근원부터 뜯어고쳐")
 
diff --git a/VideoDownloader.App/Browser/Features/CommandPalette.cs b/VideoDownloader.App/Browser/Features/CommandPalette.cs
index 5e44e7c..18a46de 100644
--- a/VideoDownloader.App/Browser/Features/CommandPalette.cs
+++ b/VideoDownloader.App/Browser/Features/CommandPalette.cs
@@ -48,8 +48,11 @@ public sealed class CommandPalette
     public void Execute(PaletteCommand command) => command.Execute();
 }
 
-/// <summary>사이트별 부스트 설정(T2-7, Zen/Arc Boosts 패턴).</summary>
-public sealed record BoostSettings(bool ForceDark, string CustomCss);
+/// <summary>페이지 액션 필터(T3-6, Vivaldi Page Actions — Boost 통합).</summary>
+public enum PageFilter { None, Grayscale, Sepia }
+
+/// <summary>사이트별 부스트 설정(T2-7, Zen/Arc Boosts 패턴) + 페이지 액션 필터(T3-6).</summary>
+public sealed record BoostSettings(bool ForceDark, string CustomCss, PageFilter Filter = PageFilter.None);
 
 /// <summary>도메인별 부스트 영속 저장.</summary>
 public sealed class BoostStore
@@ -77,11 +80,11 @@ public sealed class BoostStore
         return host != null && _map.TryGetValue(host, out var v) ? v : new BoostSettings(false, "");
     }
 
-    public void Set(string? url, bool forceDark, string css)
+    public void Set(string? url, bool forceDark, string css, PageFilter filter = PageFilter.None)
     {
         var host = Normalize(url);
         if (host == null) return;
-        _map[host] = new BoostSettings(forceDark, css);
+        _map[host] = new BoostSettings(forceDark, css, filter);
         try
         {
             Directory.CreateDirectory(Path.GetDirectoryName(_path)!);
@@ -110,7 +113,7 @@ public static class BoostCssBuilder
 {
     public static string BuildScript(string? url, BoostSettings settings)
     {
-        if (!settings.ForceDark && string.IsNullOrWhiteSpace(settings.CustomCss)) return "";
+        if (!settings.ForceDark && settings.Filter == PageFilter.None && string.IsNullOrWhiteSpace(settings.CustomCss)) return "";
         var css = "";
         if (settings.ForceDark)
         {
@@ -119,6 +122,14 @@ html { filter: invert(1) hue-rotate(180deg); background: #fff; }
 img, video, picture, canvas, svg, iframe, embed, object { filter: invert(1) hue-rotate(180deg); }
 """;
         }
+        else if (settings.Filter == PageFilter.Grayscale) // T3-6 페이지 액션
+        {
+            css += "html { filter: grayscale(1); }";
+        }
+        else if (settings.Filter == PageFilter.Sepia)
+        {
+            css += "html { filter: sepia(0.7); }";
+        }
         if (!string.IsNullOrWhiteSpace(settings.CustomCss)) css += settings.CustomCss + "\n";
         var js = $$"""
 (function(){ try { var s = document.createElement('style'); s.id = 'vd-boost'; s.textContent = {{JsonSerializer.Serialize(css)}}; (document.head || document.documentElement).appendChild(s); } catch(e){} })();
diff --git a/VideoDownloader.App/MainWindow.xaml b/VideoDownloader.App/MainWindow.xaml
index c4bfb60..71dd1fb 100644
--- a/VideoDownloader.App/MainWindow.xaml
+++ b/VideoDownloader.App/MainWindow.xaml
@@ -153,7 +153,7 @@
         </DataTemplate>
     </Window.Resources>
 
-    <Grid>
+    <Grid x:Name="MainGrid">
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto"/>
             <RowDefinition Height="Auto"/>
@@ -459,7 +459,7 @@
         <!-- ===== 상태 표시줄 ===== -->
         <Border x:Name="StatusBar" Grid.Row="4" Background="{StaticResource PanelBg}"
                 BorderBrush="{StaticResource BorderSubtle}" BorderThickness="0,1,0,0" Padding="16,5">
-            <TextBlock Name="StatusText" Foreground="{StaticResource TextMuted}" FontSize="11"
+            <TextBlock Name="StatusText" Foreground="{StaticResource TextSecondary}" FontSize="11.5"
                        TextTrimming="CharacterEllipsis" Text="준비"/>
         </Border>
 
@@ -550,6 +550,26 @@
         </Popup>
 
         <!-- ===== 다운로드 플라이아웃 (T1-5) ===== -->
+        <!-- T3-12 노트 패널 -->
+        <Popup Name="NotesPopup" PlacementTarget="{Binding ElementName=AddressBox}"
+               Placement="Bottom" HorizontalOffset="-40" VerticalOffset="6"
+               StaysOpen="False" AllowsTransparency="True" PopupAnimation="Fade">
+            <Border Background="{StaticResource CardBg}" BorderBrush="{StaticResource BorderBrush}"
+                    BorderThickness="1" CornerRadius="12" Padding="10" Width="420" MaxHeight="460">
+                <StackPanel>
+                    <DockPanel Margin="6,2,6,8">
+                        <TextBlock Text="노트" Foreground="{StaticResource TextPrimary}" FontWeight="SemiBold" VerticalAlignment="Center"/>
+                        <StackPanel DockPanel.Dock="Right" Orientation="Horizontal" HorizontalAlignment="Right">
+                            <Button Style="{StaticResource CardActionButton}" Content="현재 페이지 추가" Click="NotesAddPage_Click" Margin="0,0,6,0"/>
+                            <Button Style="{StaticResource CardActionButton}" Content="삭제" Click="NotesDelete_Click"/>
+                        </StackPanel>
+                    </DockPanel>
+                    <ListBox Name="NotesList" Background="Transparent" BorderThickness="0" Height="340"
+                             Foreground="{StaticResource TextPrimary}" FontSize="12"/>
+                </StackPanel>
+            </Border>
+        </Popup>
+
         <!-- T3-14 추적 방지 실드 팝업 -->
         <Popup Name="ShieldPopup" PlacementTarget="{Binding ElementName=ShieldBtn}"
                Placement="Bottom" HorizontalOffset="-10" VerticalOffset="6"
diff --git a/VideoDownloader.App/MainWindow.xaml.cs b/VideoDownloader.App/MainWindow.xaml.cs
index 4a88e15..0a88bb1 100644
--- a/VideoDownloader.App/MainWindow.xaml.cs
+++ b/VideoDownloader.App/MainWindow.xaml.cs
@@ -50,6 +50,15 @@ public partial class MainWindow : Window
     // Phase C: 팔레트/부스트/워크스페이스/레이아웃
     private readonly CommandPalette _palette = new();
     private BoostStore _boostStore = null!;
+    private WorkspaceRoutingRules _routingRules = null!; // T3-1
+    private TabArchive _tabArchive = null!;              // T3-2
+    internal TabArchive Archive => _tabArchive;          // E2E 검증용
+    internal BoostStore BoostStore => _boostStore;       // E2E 검증용
+    internal NotesStore Notes => _notes;                 // E2E 검증용
+    private NotesStore _notes = null!;                   // T3-12
+    private string? _currentWorkspaceName;               // T3-1 라우팅 기준
+    private bool _compactMode;                           // T3-13
+    private bool _chromeRevealed;                        // T3-13 호버 복원 상태
     private List<WorkspaceSnapshot> _workspaces = new();
     private bool _verticalTabs;
     private TabItem? _splitTab;
@@ -101,6 +110,9 @@ public partial class MainWindow : Window
         _resolver = new SearchEngineResolver(_config.SearchEngine);
         _zoomStore = new SiteZoomStore(Path.Combine(AppDataDir, "sitezoom.json"));
         _boostStore = new BoostStore(Path.Combine(AppDataDir, "boost.json"));
+        _routingRules = new WorkspaceRoutingRules(Path.Combine(AppDataDir, "routing.json"));   // T3-1
+        _tabArchive = new TabArchive(Path.Combine(AppDataDir, "archive.json"));               // T3-2
+        _notes = new NotesStore(Path.Combine(AppDataDir, "notes.json"));                      // T3-12
         try
         {
             var wsPath = Path.Combine(AppDataDir, "workspaces.json");
@@ -434,16 +446,22 @@ public partial class MainWindow : Window
     private void OnTabRemoved(TabItem tab)
     {
         if (ReferenceEquals(_splitTab, tab)) ExitSplit();
+        _tabArchive.Add(tab.Title, tab.Url); // T3-2 닫힘 → 아카이브(영속, 500 상한)
         _views?.RemoveView(tab);
     }
 
     private void UpdateNavState()
     {
-        var cv = Cv;
         Dispatcher.BeginInvoke(new Action(() =>
         {
-            NavBack.IsEnabled = cv?.CanGoBack == true;
-            NavForward.IsEnabled = cv?.CanGoForward == true;
+            try
+            {
+                var cv = Cv; // dispose 이후 이벤트 경로 방어
+                NavBack.IsEnabled = cv?.CanGoBack == true;
+                NavForward.IsEnabled = cv?.CanGoForward == true;
+            }
+            catch (ObjectDisposedException) { }
+            catch (InvalidOperationException) { }
         }));
     }
 
@@ -717,6 +735,16 @@ public partial class MainWindow : Window
         // T1-4: URL/검색어 판별 + 기본 엔진·키워드 전환(g, yt, ...)은 리졸버가 담당
         var intent = _resolver.Resolve(url);
         if (intent == null) return;
+
+        // T3-1: 도메인 라우팅 규칙 — 대상 워크스페이스가 다르면 자동 전환 후 이동(Arc ATC 패턴)
+        var routeTo = _routingRules.Match(intent.Target);
+        if (routeTo != null && routeTo != _currentWorkspaceName &&
+            _workspaces.FirstOrDefault(w => w.Name == routeTo) is { } wsTarget)
+        {
+            SwitchWorkspace(wsTarget);
+            _currentWorkspaceName = routeTo;
+            Log($"라우팅 규칙 → 워크스페이스 '{routeTo}' 전환");
+        }
         Cv?.Navigate(intent.Target);
     }
 
@@ -778,6 +806,8 @@ public partial class MainWindow : Window
         else if (mods == (ModifierKeys.Control | ModifierKeys.Shift) && e.Key == Key.D) { ToggleBoostDark(); e.Handled = true; }
         else if (mods == (ModifierKeys.Control | ModifierKeys.Shift) && e.Key == Key.S) { _ = TakeScreenshot(); e.Handled = true; }
         else if (mods == (ModifierKeys.Control | ModifierKeys.Shift) && e.Key == Key.N) { OpenInPrivateTab(); e.Handled = true; }
+        else if (mods == (ModifierKeys.Control | ModifierKeys.Shift) && e.Key == Key.M) { ToggleCompactMode(); e.Handled = true; } // T3-13
+        else if (mods == (ModifierKeys.Control | ModifierKeys.Alt) && e.Key == Key.N) { ToggleNotes(); e.Handled = true; }        // T3-12
         else if (mods == (ModifierKeys.Alt | ModifierKeys.Control) && e.Key == Key.V) { ToggleVerticalTabs(); e.Handled = true; }
         else if (mods == (ModifierKeys.Alt | ModifierKeys.Control) && e.Key == Key.H) { ToggleSplit(); e.Handled = true; }
         else if (mods == ModifierKeys.Control && e.Key == Key.U) { ViewSource(); e.Handled = true; }
@@ -1243,6 +1273,20 @@ public partial class MainWindow : Window
         _palette.Register("미디어 재생목록", "playlist play media 음악 영상", () => { PlaylistPopup.IsOpen = true; });
         _palette.Register("재생목록 재생", "playlist play start", OpenPlayer);
         _palette.Register("기기 연결 (QR 페어링)", "remote pair qr mobile phone", ShowPairing);
+        // ---- T3 잔여(데스크톱) ----
+        _palette.Register("이 사이트 흑백", "grayscale filter page action 흑백", () => ApplyPageFilter(PageFilter.Grayscale)); // T3-6
+        _palette.Register("이 사이트 세피아", "sepia filter page action 세피아", () => ApplyPageFilter(PageFilter.Sepia));
+        _palette.Register("페이지 액션 끄기", "filter off reset", () => ApplyPageFilter(PageFilter.None));
+        _palette.Register("노트 패널", "notes note 메모", ToggleNotes);                                                        // T3-12
+        _palette.Register("노트: 현재 페이지 추가", "note add", () => NotesAddPage_Click(this, new RoutedEventArgs()));
+        _palette.Register("컴팩트 모드 토글", "compact chrome hide ui", ToggleCompactMode);                                     // T3-13
+        _palette.RegisterDynamic(() => _workspaces                                             // T3-1: 사이트→워크스페이스 규칙
+            .Select(w => new PaletteCommand($"라우팅 규칙: 이 사이트 → '{w.Name}'", "routing rule workspace",
+                () => AddRoutingRuleForCurrentSite(w.Name))).ToList());
+        _palette.RegisterDynamic(() => _tabArchive.Search("")                                  // T3-2: 아카이브 복구
+            .Take(8)
+            .Select(a => new PaletteCommand($"아카이브에서 열기: {a.Title}", $"archive reopen {a.Url}",
+                () => { var t = _tabs.NewTab(); Cv2Navigate(t, a.Url); })).ToList());
         _palette.Register("원격 접근 켜기/끄기", "remote server toggle lan", async () => await ToggleRemoteAccess());
         _palette.RegisterSeparator();
         _palette.RegisterDynamic(() => _tabs.Tabs
@@ -1304,6 +1348,112 @@ public partial class MainWindow : Window
         Log(!cur.ForceDark ? "이 사이트 강제 다크 켜짐" : "이 사이트 강제 다크 꺼짐");
     }
 
+    // ---- T3-6 페이지 액션(흑백/세피아 — Boost 통합) ----
+    internal void ApplyPageFilter(PageFilter filter)
+    {
+        var url = Cv?.Source;
+        if (string.IsNullOrEmpty(url)) { Log("페이지가 없습니다"); return; }
+        var cur = _boostStore.Get(url);
+        _boostStore.Set(url, cur.ForceDark, cur.CustomCss, filter);
+        _views?.ApplyBoostNow(_tabs.ActiveTab!);
+        Log(filter switch
+        {
+            PageFilter.Grayscale => "이 사이트 흑백 적용",
+            PageFilter.Sepia => "이 사이트 세피아 적용",
+            _ => "페이지 액션 해제",
+        });
+    }
+
+    // ---- T3-1 도메인 라우팅 규칙 ----
+    private void AddRoutingRuleForCurrentSite(string workspaceName)
+    {
+        var url = Cv?.Source;
+        if (string.IsNullOrWhiteSpace(url) || !Uri.TryCreate(url, UriKind.Absolute, out var u))
+        { Log("페이지가 없습니다"); return; }
+        var host = u.Host;
+        if (host.StartsWith("www.", StringComparison.OrdinalIgnoreCase)) host = host[4..];
+        _routingRules.Add(host, workspaceName);
+        Log($"라우팅 규칙 추가: {host} → '{workspaceName}' (다음 이동부터 자동 전환)");
+    }
+
+    // ---- T3-2 아카이브 복구 보조 ----
+    private static void Cv2Navigate(TabItem tab, string url)
+    {
+        try { tab.View?.CoreWebView2?.Navigate(url); } catch { }
+    }
+
+    // ---- T3-12 노트 패널 ----
+    internal void ToggleNotes()
+    {
+        RefreshNotesList();
+        NotesPopup.IsOpen = true;
+    }
+
+    private void RefreshNotesList()
+    {
+        NotesList.ItemsSource = _notes.List()
+            .Select(n => $"[{n.CreatedAt:MM-dd HH:mm}] {n.Title} — {n.Body}")
+            .ToList();
+        NotesList.DisplayMemberPath = null;
+    }
+
+    internal void NotesAddPage_Click(object sender, RoutedEventArgs e)
+    {
+        var url = Cv?.Source ?? "";
+        var title = _tabs.ActiveTab?.Title ?? url;
+        _notes.Add(title, url);
+        Log("노트에 페이지 추가됨");
+        RefreshNotesList();
+    }
+
+    private void NotesDelete_Click(object sender, RoutedEventArgs e)
+    {
+        var idx = NotesList.SelectedIndex;
+        var list = _notes.List();
+        if (idx >= 0 && idx < list.Count)
+        {
+            _notes.Delete(list[idx].Id);
+            RefreshNotesList();
+        }
+    }
+
+    // ---- T3-13 컴팩트 모드(크롬 숨김 + 상단 엣지 호버 복원) ----
+    internal void ToggleCompactMode()
+    {
+        _compactMode = !_compactMode;
+        _chromeRevealed = false;
+        ApplyChromeVisibility();
+        Log(_compactMode ? "컴팩트 모드: 크롤 숨김 (상단 가장자리에 마우스를 올리면 복원)" : "컴팩트 모드 해제");
+    }
+
+    private void ApplyChromeVisibility()
+    {
+        var chromeRows = new[] { 0, 1, 2 }; // 툴바/북마크바/탭스트립
+        foreach (var i in chromeRows)
+            MainGrid.RowDefinitions[i].Height = (_compactMode && !_chromeRevealed) ? new GridLength(0) : GridLength.Auto;
+        if (!_compactMode) _chromeRevealed = false;
+    }
+
+    protected override void OnPreviewMouseMove(System.Windows.Input.MouseEventArgs e)
+    {
+        if (_compactMode)
+        {
+            var p = e.GetPosition(this);
+            var wantReveal = p.Y <= 4; // 상단 엣지 4px
+            if (wantReveal != _chromeRevealed)
+            {
+                _chromeRevealed = wantReveal;
+                ApplyChromeVisibility();
+            }
+            else if (_chromeRevealed && p.Y > 120) // 크롬 영역 벗어나면 다시 숨김
+            {
+                _chromeRevealed = false;
+                ApplyChromeVisibility();
+            }
+        }
+        base.OnPreviewMouseMove(e);
+    }
+
     // ---- T2-9 스크린샷 ----
     private async Task TakeScreenshot()
     {
@@ -1490,7 +1640,7 @@ public partial class MainWindow : Window
         if (cv == null) return;
         var tiles = _bookmarks.Take(18).Select(b =>
             $"<a href='{System.Net.WebUtility.HtmlEncode(b.Url)}' style='display:block;text-decoration:none;background:#262736;color:#e6e6ec;border-radius:12px;padding:18px 12px;text-align:center;font-size:12.5px;min-width:110px' onmouseover='this.style.background=#2f3042' onmouseout='this.style.background=#262736'><div style='font-size:26px;margin-bottom:8px'>&#127760;</div><div style='overflow:hidden;text-overflow:ellipsis;white-space:nowrap'>{System.Net.WebUtility.HtmlEncode(b.Title)}</div></a>").ToList();
-        var dial = "<!DOCTYPE html><html><head><meta charset='utf-8'><style>body{background:#14151d;color:#e6e6ec;font-family:'Segoe UI',sans-serif;margin:0;padding:48px 24px}h1{font-size:20px;text-align:center;margin-bottom:28px;font-weight:600}.grid{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;max-width:760px;margin:0 auto}.hint{text-align:center;color:#8a8aa0;font-size:12px;margin-top:36px}a{color:inherit}</style></head><body><h1>새 탭</h1><div class='grid'>" + string.Join("", tiles) + $"</div><div class='hint'>주소창에 검색어나 URL 을 입력하세요 · 즐겨찾기 {_bookmarks.Count}개 중 {tiles.Count}개 표시</div></body></html>";
+        var dial = "<!DOCTYPE html><html><head><meta charset='utf-8'><style>body{background:#14151d;color:#e6e6ec;font-family:'Segoe UI Variable Text','Segoe UI','Malgun Gothic',sans-serif;margin:0;padding:48px 24px}h1{font-size:20px;text-align:center;margin-bottom:28px;font-weight:600}.grid{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;max-width:760px;margin:0 auto}.hint{text-align:center;color:#9aa0b4;font-size:12.5px;margin-top:36px}a{color:inherit}</style></head><body><h1>새 탭</h1><div class='grid'>" + string.Join("", tiles) + $"</div><div class='hint'>주소창에 검색어나 URL 을 입력하세요 · 즐겨찾기 {_bookmarks.Count}개 중 {tiles.Count}개 표시</div></body></html>";
         cv.NavigateToString(dial);
     }
 
@@ -1575,6 +1725,7 @@ public partial class MainWindow : Window
     {
         ExitSplit();
         _tabs.SwitchWorkspace(ws);
+        _currentWorkspaceName = ws.Name; // T3-1 라우팅 기준
         Log($"워크스페이스 '{ws.Name}' 전환 ({ws.Urls.Count} 탭)");
     }
 
diff --git a/VideoDownloader.App/Themes/Dark.xaml b/VideoDownloader.App/Themes/Dark.xaml
index 8a4d0b3..c8eb2f4 100644
--- a/VideoDownloader.App/Themes/Dark.xaml
+++ b/VideoDownloader.App/Themes/Dark.xaml
@@ -12,11 +12,11 @@
     <SolidColorBrush x:Key="GlassBg"       Color="#1A1A24"/>
     <SolidColorBrush x:Key="CardBg"        Color="#1C1C26"/>
     <SolidColorBrush x:Key="CardBgHover"   Color="#242430"/>
-    <SolidColorBrush x:Key="BorderBrush"   Color="#2C2C3A"/>
+    <SolidColorBrush x:Key="BorderBrush"   Color="#343442"/>
     <SolidColorBrush x:Key="BorderSubtle"  Color="#20202B"/>
     <SolidColorBrush x:Key="TextPrimary"   Color="#F2F2F6"/>
-    <SolidColorBrush x:Key="TextSecondary" Color="#9B9BAC"/>
-    <SolidColorBrush x:Key="TextMuted"     Color="#62626E"/>
+    <SolidColorBrush x:Key="TextSecondary" Color="#A9B0C5"/>
+    <SolidColorBrush x:Key="TextMuted"     Color="#7C8296"/>
     <SolidColorBrush x:Key="TrackBrush"    Color="#262631"/>
     <SolidColorBrush x:Key="SuccessBrush"  Color="#34D399"/>
     <SolidColorBrush x:Key="ErrorBrush"    Color="#F87171"/>
diff --git a/VideoDownloader.App/Themes/Light.xaml b/VideoDownloader.App/Themes/Light.xaml
index af93ede..002f125 100644
--- a/VideoDownloader.App/Themes/Light.xaml
+++ b/VideoDownloader.App/Themes/Light.xaml
@@ -15,8 +15,8 @@
     <SolidColorBrush x:Key="BorderBrush"   Color="#D5D9E1"/>
     <SolidColorBrush x:Key="BorderSubtle"  Color="#E3E6EC"/>
     <SolidColorBrush x:Key="TextPrimary"   Color="#1B1C24"/>
-    <SolidColorBrush x:Key="TextSecondary" Color="#565A6A"/>
-    <SolidColorBrush x:Key="TextMuted"     Color="#8A8E9C"/>
+    <SolidColorBrush x:Key="TextSecondary" Color="#4A4E5E"/>
+    <SolidColorBrush x:Key="TextMuted"     Color="#767B8C"/>
     <SolidColorBrush x:Key="TrackBrush"    Color="#DBDFE6"/>
     <SolidColorBrush x:Key="SuccessBrush"  Color="#15A34A"/>
     <SolidColorBrush x:Key="ErrorBrush"    Color="#DC2626"/>
diff --git a/VideoDownloader.App/Themes/Shared.xaml b/VideoDownloader.App/Themes/Shared.xaml
index b77a402..cc36fc3 100644
--- a/VideoDownloader.App/Themes/Shared.xaml
+++ b/VideoDownloader.App/Themes/Shared.xaml
@@ -1,10 +1,23 @@
 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
 
-    <!-- 폰트 (테마 무관) -->
-    <FontFamily x:Key="UiFont">Segoe UI Variable Text, Segoe UI</FontFamily>
+    <!-- 폰트 (테마 무관) — 한국어 폴백 포함(맑은 고딕) -->
+    <FontFamily x:Key="UiFont">Segoe UI Variable Text, Segoe UI, Malgun Gothic</FontFamily>
     <FontFamily x:Key="IconFont">Segoe Fluent Icons</FontFamily>
 
+    <!-- 암시 스타일: 모든 텍스트가 UI 폰트로 통일(Foreground 는 상속 존중) -->
+    <Style TargetType="TextBlock">
+        <Setter Property="FontFamily" Value="{StaticResource UiFont}"/>
+    </Style>
+    <Style TargetType="ToolTip">
+        <Setter Property="FontFamily" Value="{StaticResource UiFont}"/>
+        <Setter Property="Foreground" Value="{StaticResource TextPrimary}"/>
+        <Setter Property="Background" Value="{StaticResource CardBg}"/>
+        <Setter Property="BorderBrush" Value="{StaticResource BorderBrush}"/>
+        <Setter Property="FontSize" Value="12"/>
+        <Setter Property="Padding" Value="10,6"/>
+    </Style>
+
     <!-- ===== Primary 버튼 ===== -->
     <Style x:Key="PrimaryButton" TargetType="Button">
         <Setter Property="FontFamily" Value="{StaticResource UiFont}"/>
diff --git a/VideoDownloader.Browser/NotesStore.cs b/VideoDownloader.Browser/NotesStore.cs
new file mode 100644
index 0000000..3d38472
--- /dev/null
+++ b/VideoDownloader.Browser/NotesStore.cs
@@ -0,0 +1,63 @@
+using System.Text.Json;
+
+namespace VideoDownloader.Browser;
+
+public sealed record NoteItem(string Id, string Title, string Body, DateTime CreatedAt);
+
+/// <summary>T3-12: 노트 패널 저장소 — 마크다운 텍스트 노트 추가·검색·삭제, JSON 영속.</summary>
+public sealed class NotesStore
+{
+    private readonly string _path;
+    private readonly object _gate = new();
+    private List<NoteItem> _items;
+
+    public NotesStore(string path)
+    {
+        _path = path;
+        try
+        {
+            if (File.Exists(path))
+                _items = JsonSerializer.Deserialize<List<NoteItem>>(File.ReadAllText(path)) ?? new();
+        }
+        catch { }
+        _items ??= new List<NoteItem>();
+    }
+
+    public string Add(string title, string body)
+    {
+        var note = new NoteItem(Guid.NewGuid().ToString("N"), title, body, DateTime.Now);
+        lock (_gate)
+        {
+            _items.Insert(0, note);
+            try
+            {
+                Directory.CreateDirectory(Path.GetDirectoryName(_path)!);
+                File.WriteAllText(_path, JsonSerializer.Serialize(_items));
+            }
+            catch { }
+        }
+        return note.Id;
+    }
+
+    public List<NoteItem> List()
+    {
+        lock (_gate) return _items.ToList();
+    }
+
+    public List<NoteItem> Search(string query)
+    {
+        var q = query?.Trim() ?? "";
+        return List().Where(n => q.Length == 0 ||
+            n.Title.Contains(q, StringComparison.OrdinalIgnoreCase) ||
+            n.Body.Contains(q, StringComparison.OrdinalIgnoreCase)).ToList();
+    }
+
+    public void Delete(string id)
+    {
+        lock (_gate)
+        {
+            _items.RemoveAll(n => n.Id == id);
+            try { File.WriteAllText(_path, JsonSerializer.Serialize(_items)); } catch { }
+        }
+    }
+}
diff --git a/VideoDownloader.Browser/TabArchive.cs b/VideoDownloader.Browser/TabArchive.cs
new file mode 100644
index 0000000..bc50fab
--- /dev/null
+++ b/VideoDownloader.Browser/TabArchive.cs
@@ -0,0 +1,63 @@
+using System.Text.Json;
+
+namespace VideoDownloader.Browser;
+
+public sealed record ArchivedTab(string Title, string Url, DateTime ClosedAt);
+
+/// <summary>T3-2: 탭 아카이브 — 닫힘 이력 영속(최대 500, 같은 URL 연속은 제목 갱신), 검색·복구 지원.</summary>
+public sealed class TabArchive
+{
+    private const int Cap = 500;
+    private readonly string _path;
+    private readonly object _gate = new();
+    private List<ArchivedTab> _items;
+
+    public TabArchive(string path)
+    {
+        _path = path;
+        try
+        {
+            if (File.Exists(path))
+                _items = JsonSerializer.Deserialize<List<ArchivedTab>>(File.ReadAllText(path)) ?? new();
+        }
+        catch { }
+        _items ??= new List<ArchivedTab>();
+    }
+
+    public void Add(string title, string url)
+    {
+        if (string.IsNullOrWhiteSpace(url)) return;
+        lock (_gate)
+        {
+            _items.RemoveAll(t => t.Url.Equals(url, StringComparison.OrdinalIgnoreCase));
+            _items.Insert(0, new ArchivedTab(title, url, DateTime.Now));
+            if (_items.Count > Cap) _items.RemoveRange(Cap, _items.Count - Cap);
+            try
+            {
+                Directory.CreateDirectory(Path.GetDirectoryName(_path)!);
+                File.WriteAllText(_path, JsonSerializer.Serialize(_items));
+            }
+            catch { }
+        }
+    }
+
+    public List<ArchivedTab> Search(string query)
+    {
+        lock (_gate)
+        {
+            var q = query?.Trim() ?? "";
+            return _items.Where(t => q.Length == 0 ||
+                t.Title.Contains(q, StringComparison.OrdinalIgnoreCase) ||
+                t.Url.Contains(q, StringComparison.OrdinalIgnoreCase)).ToList();
+        }
+    }
+
+    public void Remove(string url)
+    {
+        lock (_gate)
+        {
+            _items.RemoveAll(t => t.Url.Equals(url, StringComparison.OrdinalIgnoreCase));
+            try { File.WriteAllText(_path, JsonSerializer.Serialize(_items)); } catch { }
+        }
+    }
+}
diff --git a/VideoDownloader.Browser/WorkspaceRoutingRules.cs b/VideoDownloader.Browser/WorkspaceRoutingRules.cs
new file mode 100644
index 0000000..dd56608
--- /dev/null
+++ b/VideoDownloader.Browser/WorkspaceRoutingRules.cs
@@ -0,0 +1,65 @@
+using System.Text.Json;
+
+namespace VideoDownloader.Browser;
+
+/// <summary>T3-1: 도메인 → 워크스페이스 자동 라우팅 규칙(Vivaldi 규칙/Arc ATC).
+/// 주소창 이동 시 매칭되면 해당 워크스페이스로 자동 전환한다. JSON 영속.</summary>
+public sealed class WorkspaceRoutingRules
+{
+    private readonly string _path;
+    private Dictionary<string, string> _map = new(StringComparer.OrdinalIgnoreCase);
+
+    public WorkspaceRoutingRules(string path)
+    {
+        _path = path;
+        try
+        {
+            if (File.Exists(path))
+                _map = JsonSerializer.Deserialize<Dictionary<string, string>>(File.ReadAllText(path)) ?? new();
+        }
+        catch { }
+        _map ??= new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+    }
+
+    public IReadOnlyDictionary<string, string> Rules => _map;
+
+    public void Add(string domain, string workspaceName)
+    {
+        var d = domain.Trim().TrimStart('.', 'w', 'w', 'w', '.');
+        _map[d] = workspaceName;
+        Save();
+    }
+
+    public void Remove(string domain)
+    {
+        _map.Remove(domain.Trim());
+        Save();
+    }
+
+    /// <summary>URL 이 매칭되는 워크스페이스명(없으면 null). www/서브도메인 허용.</summary>
+    public string? Match(string? url)
+    {
+        if (string.IsNullOrWhiteSpace(url)) return null;
+        if (!Uri.TryCreate(url, UriKind.Absolute, out var u) ||
+            (u.Scheme != Uri.UriSchemeHttp && u.Scheme != Uri.UriSchemeHttps)) return null;
+        var host = u.Host;
+        if (host.StartsWith("www.", StringComparison.OrdinalIgnoreCase)) host = host[4..];
+        foreach (var (domain, ws) in _map)
+        {
+            if (host.Equals(domain, StringComparison.OrdinalIgnoreCase) ||
+                host.EndsWith("." + domain, StringComparison.OrdinalIgnoreCase))
+                return ws;
+        }
+        return null;
+    }
+
+    private void Save()
+    {
+        try
+        {
+            Directory.CreateDirectory(Path.GetDirectoryName(_path)!);
+            File.WriteAllText(_path, JsonSerializer.Serialize(_map));
+        }
+        catch { }
+    }
+}
diff --git a/VideoDownloader.Tests/Browser/DesktopRemainderTests.cs b/VideoDownloader.Tests/Browser/DesktopRemainderTests.cs
new file mode 100644
index 0000000..24093c2
--- /dev/null
+++ b/VideoDownloader.Tests/Browser/DesktopRemainderTests.cs
@@ -0,0 +1,130 @@
+using VideoDownloader.App.Browser.Features;
+using VideoDownloader.Browser;
+
+namespace VideoDownloader.Tests.Browser;
+
+/// <summary>데스크톱 T3 잔여 — 워크스페이스 라우팅(T3-1), 탭 아카이브(T3-2), 노트(T3-12).</summary>
+public class DesktopRemainderTests : IDisposable
+{
+    private readonly string _dir = Path.Combine(Path.GetTempPath(), $"vd_t3_{Guid.NewGuid():N}");
+
+    // ── T3-1: 도메인 → 워크스페이스 자동 라우팅 규칙 ──
+
+    [Fact]
+    public void 라우팅_규칙_도메인_매칭()
+    {
+        var rules = new WorkspaceRoutingRules(Path.Combine(_dir, "routing.json"));
+        rules.Add("youtube.com", "영상");
+        Assert.Equal("영상", rules.Match("https://www.youtube.com/watch?v=1")); // www 정규화
+        Assert.Equal("영상", rules.Match("https://m.youtube.com/watch?v=1"));   // 서브도메인
+        Assert.Null(rules.Match("https://example.com"));                          // 무관 도메인
+        Assert.Null(rules.Match("about:blank"));                                  // 비 HTTP
+    }
+
+    [Fact]
+    public void 라우팅_규칙_영속_및_제거()
+    {
+        var p = Path.Combine(_dir, "routing.json");
+        new WorkspaceRoutingRules(p).Add("x.com", "SNS");
+        var reloaded = new WorkspaceRoutingRules(p); // 재시작
+        Assert.Equal("SNS", reloaded.Match("https://x.com/home"));
+        reloaded.Remove("x.com");
+        Assert.Null(reloaded.Match("https://x.com/home"));
+    }
+
+    // ── T3-2: 탭 아카이브(닫힘 이력 영속·검색·중복 제거) ──
+
+    [Fact]
+    public void 아카이브_기록_검색_중복제거()
+    {
+        var arc = new TabArchive(Path.Combine(_dir, "archive.json"));
+        arc.Add("영상1", "https://a.com/1");
+        arc.Add("영상1 다시", "https://a.com/1"); // 같은 URL 연속 → 제목만 갱신
+        arc.Add("문서", "https://b.com/doc");
+        Assert.Single(arc.Search("a.com/1"));
+        Assert.Equal("영상1 다시", arc.Search("a.com/1")[0].Title);
+        Assert.Single(arc.Search("문서"));
+        Assert.Equal(2, arc.Search("").Count);
+    }
+
+    [Fact]
+    public void 아카이브_영속_삭제()
+    {
+        var p = Path.Combine(_dir, "archive.json");
+        var arc = new TabArchive(p);
+        arc.Add("t", "https://x.com");
+        var re = new TabArchive(p);
+        Assert.Single(re.Search("x.com"));
+        re.Remove("https://x.com");
+        Assert.Empty(new TabArchive(p).Search("x.com"));
+    }
+
+    [Fact]
+    public void 아카이브_최대_500_제한()
+    {
+        var arc = new TabArchive(Path.Combine(_dir, "archive.json"));
+        for (var i = 0; i < 520; i++) arc.Add($"t{i}", $"https://x.com/{i}");
+        Assert.Equal(500, arc.Search("").Count);
+        Assert.Equal("t519", arc.Search("")[0].Title); // 최신이 앞
+    }
+
+    // ── T3-12: 노트 저장소 ──
+
+    [Fact]
+    public void 노트_추가_목록_삭제_영속()
+    {
+        var p = Path.Combine(_dir, "notes.json");
+        var notes = new NotesStore(p);
+        var id = notes.Add("제목", "본문 내용");
+        Assert.Single(notes.List());
+        Assert.Equal(("제목", "본문 내용"), (notes.List()[0].Title, notes.List()[0].Body));
+
+        var re = new NotesStore(p); // 재시작
+        Assert.Single(re.List());
+        re.Delete(id);
+        Assert.Empty(new NotesStore(p).List());
+    }
+
+    [Fact]
+    public void 노트_검색()
+    {
+        var notes = new NotesStore(Path.Combine(_dir, "notes.json"));
+        notes.Add("유튜브 모음", "링크들");
+        notes.Add("회의록", "유튜브 언급됨");
+        Assert.Equal(2, notes.Search("유튜브").Count);
+        Assert.Single(notes.Search("회의"));
+    }
+
+
+    // ── T3-6: 페이지 액션 — 흑백/세피아 CSS 필터(Vivaldi Page Actions, Boost 통합) ──
+
+    [Fact]
+    public void 페이지액션_흑백_CSS_생성()
+    {
+        var js = VideoDownloader.App.Browser.Features.BoostCssBuilder.BuildScript(
+            "https://x.com", new VideoDownloader.App.Browser.Features.BoostSettings(false, "", PageFilter.Grayscale));
+        Assert.Contains("grayscale(1)", js);
+        Assert.DoesNotContain("invert(1)", js);
+    }
+
+    [Fact]
+    public void 페이지액션_세피아_CSS_생성()
+    {
+        var js = VideoDownloader.App.Browser.Features.BoostCssBuilder.BuildScript(
+            "https://x.com", new VideoDownloader.App.Browser.Features.BoostSettings(false, "", PageFilter.Sepia));
+        Assert.Contains("sepia(", js);
+    }
+
+    [Fact]
+    public void 페이지액션_미적용_시_빈_스크립트()
+    {
+        var js = VideoDownloader.App.Browser.Features.BoostCssBuilder.BuildScript(
+            "https://x.com", new VideoDownloader.App.Browser.Features.BoostSettings(false, "", PageFilter.None));
+        Assert.Equal("", js);
+    }
+
+    public void Dispose()
+    {
+        try { Directory.Delete(_dir, true); } catch { }
+    }
+}
diff --git a/VideoDownloader.Tests/E2E/MainWindowSmokeE2ETests.cs b/VideoDownloader.Tests/E2E/MainWindowSmokeE2ETests.cs
index 1a31466..bf60966 100644
--- a/VideoDownloader.Tests/E2E/MainWindowSmokeE2ETests.cs
+++ b/VideoDownloader.Tests/E2E/MainWindowSmokeE2ETests.cs
@@ -68,9 +68,53 @@ public class MainWindowSmokeE2ETests
             window.ToggleFullscreen();
             var toolbarBack = window.ToolbarRow.Visibility == Visibility.Visible;
 
+            // ── T3-13 컴팩트 모드: 크롬 행 높이 0 → 해제 시 복원 ──
+            window.ToggleCompactMode();
+            var compactRowZero = window.MainGrid.RowDefinitions[0].Height.Value == 0;
+            window.ToggleCompactMode();
+            var compactRowBack = window.MainGrid.RowDefinitions[0].Height.IsAuto;
+
+            // ── T3-12 노트: 패널 열림 + 현재 페이지 추가 → 목록 1건 ──
+            window.ToggleNotes();
+            var notesOpen = window.NotesPopup.IsOpen;
+            window.NotesAddPage_Click(window, new RoutedEventArgs());
+            var notesCount = window.Notes.List().Count;
+            window.NotesPopup.IsOpen = false;
+
+            // ── T3-2 아카이브: 위에서 닫았던 탭이 영속 아카이브에 기록 ──
+            // ── T3-2 아카이브: URL 있는 탭을 닫으면 영속 아카이브에 기록 ──
+            var tab3 = window.Tabs.NewTab();
+            await Wait.Until(() => Task.FromResult(tab3.Core), c => c != null, 30000);
+            tab3.Url = "https://e2e.test/archived-page"; // URL 확정 상태 시뮬레이션(실제는 SourceChanged 가 설정)
+            window.Tabs.CloseTab(tab3);
+            await Task.Delay(800); // 진행 중이던 초기 네비게이션 이벤트가 dispose 이후 터지지 않게 여유
+            var archivedCount = window.Archive.Search("").Count;
+            var archivedHasUrl = window.Archive.Search("").Any(a => a.Url.Contains("e2e.test"));
+
+            // ── T3-6 페이지 액션: 실제 HTTP 문서에서 흑백 적용 → 부스트 저장 ──
+            var port = Random.Shared.Next(21000, 59000);
+            using var server = new System.Net.HttpListener();
+            server.Prefixes.Add($"http://127.0.0.1:{port}/");
+            server.Start();
+            var serveTask = Task.Run(async () =>
+            {
+                var ctx = await server.GetContextAsync();
+                var bytes = System.Text.Encoding.UTF8.GetBytes("<html><body><p>page-action-e2e</p></body></html>");
+                await ctx.Response.OutputStream.WriteAsync(bytes);
+                ctx.Response.Close();
+            });
+            window.Tabs.Activate(first);
+            cv1.Navigate($"http://127.0.0.1:{port}/");
+            await Wait.Until(() => Task.FromResult(cv1.Source ?? ""), s => s.Contains("127.0.0.1"), 15000);
+            await serveTask.WaitAsync(TimeSpan.FromSeconds(10));
+            window.ApplyPageFilter(VideoDownloader.App.Browser.Features.PageFilter.Grayscale);
+            var filterSaved = window.BoostStore.Get($"http://127.0.0.1:{port}/").Filter;
+            server.Stop();
+
             window.Close();
             return (init: true, switched, countAfterClose, reopened: reopened != null, countAfterReopen,
-                    findVisible, findCollapsed, toolbarHidden, toolbarBack);
+                    findVisible, findCollapsed, toolbarHidden, toolbarBack,
+                    compactRowZero, compactRowBack, notesOpen, notesCount, archivedCount, archivedHasUrl, filterSaved);
         });
 
         Assert.True(ok.init, "WebView2 초기화 실패");
@@ -82,6 +126,12 @@ public class MainWindowSmokeE2ETests
         Assert.True(ok.findCollapsed, "검색 바 미닫힘");
         Assert.True(ok.toolbarHidden, "전체화면에서 크롬 미숨김");
         Assert.True(ok.toolbarBack, "전체화면 복원 실패");
+        Assert.True(ok.compactRowZero, "컴팩트 모드에서 크롬 행이 숨겨지지 않음");
+        Assert.True(ok.compactRowBack, "컴팩트 모드 해제 후 크롬 행 미복원");
+        Assert.True(ok.notesOpen, "노트 패널 미열림");
+        Assert.True(ok.notesCount == 1, $"노트 추가 실패: {ok.notesCount}");
+        Assert.True(ok.archivedCount >= 1 && ok.archivedHasUrl, $"탭 아카이브 미기록: {ok.archivedCount}");
+        Assert.Equal(VideoDownloader.App.Browser.Features.PageFilter.Grayscale, ok.filterSaved);
         }
         finally
         {