diff --git a/src/TaxBaik.Web.Client/Components/Admin/App.razor b/src/TaxBaik.Web.Client/Components/Admin/App.razor
index f624957..c32732a 100644
--- a/src/TaxBaik.Web.Client/Components/Admin/App.razor
+++ b/src/TaxBaik.Web.Client/Components/Admin/App.razor
@@ -35,131 +35,19 @@
             <p>로드 중...</p>
         </div>
     </div>
-    <script>
-        // 로그인 화면은 prerender로 즉시 표시되므로 스피너가 필요 없다.
-        // 그 외 인증 화면은 WASM 부팅이 끝날 때까지(AdminShell.OnAfterRenderAsync에서 hideLoading 호출)
-        // 스피너를 "업데이트 스플래시"로 보여준다.
-        if (!document.documentElement.classList.contains('admin-login-route')) {
-            var loadingOverlay = document.getElementById('blazor-loading');
-            if (loadingOverlay) loadingOverlay.classList.add('show');
-            window.setTimeout(function () {
-                if (window.taxbaikAdminSession && typeof window.taxbaikAdminSession.hideLoading === 'function') {
-                    window.taxbaikAdminSession.hideLoading();
-                }
-            }, 8000);
-        }
-    </script>
-    <MudThemeProvider @bind-IsDarkMode="isDarkMode" Theme="mudTheme" />
-    <Routes />
+    <Routes @rendermode="InteractiveWebAssembly" />
     <script src="/taxbaik/_content/MudBlazor/MudBlazor.min.js"></script>
     <script src="/taxbaik/js/admin-session.js"></script>
     <script src="/taxbaik/admin/_framework/blazor.webassembly.js"></script>
     <script>
-        // admin-session.js 로드 완료 대기 후 초기화
-        function initSession() {
-            if (window.taxbaikAdminSession) {
-                if (typeof window.taxbaikAdminSession.initErrorLogging === 'function') {
-                    window.taxbaikAdminSession.initErrorLogging();
-                }
-                if (typeof window.taxbaikAdminSession.bindLoginForm === 'function') {
-                    window.taxbaikAdminSession.bindLoginForm();
-                }
-                if (typeof window.taxbaikAdminSession.watchReconnect === 'function') {
-                    window.taxbaikAdminSession.watchReconnect();
-                }
-            } else {
-                // admin-session.js가 아직 로드되지 않았으면 재시도
-                setTimeout(initSession, 50);
-            }
+        if (document.documentElement.classList.contains('admin-login-route') &&
+            window.taxbaikAdminSession &&
+            typeof window.taxbaikAdminSession.bindLoginForm === 'function') {
+            window.taxbaikAdminSession.bindLoginForm();
         }
-        initSession();
     </script>
 </body>
 </html>
 
 @code {
-    private bool isDarkMode = false;
-    private MudTheme mudTheme = new()
-    {
-        Palette = new PaletteLight()
-        {
-            Primary = "#1976D2",
-            PrimaryContrastText = "#FFFFFF",
-            Secondary = "#2D9F7E",
-            SecondaryContrastText = "#FFFFFF",
-            Tertiary = "#FF8A50",
-            TertiaryContrastText = "#FFFFFF",
-            Surface = "#F5F7FA",
-            Background = "#FFFFFF",
-            BackgroundGrey = "#F8F9FB",
-            DrawerBackground = "#FFFFFF",
-            DrawerText = "#424242",
-            AppbarBackground = "#FFFFFF",
-            AppbarText = "#424242",
-            TextPrimary = "#1A1A1A",
-            TextSecondary = "#64748B",
-            TextDisabled = "#94A3B8",
-            ActionDefault = "#1976D2",
-            ActionDisabled = "#BDBDBD",
-            Divider = "#E2E8F0",
-            DividerLight = "#F1F5F9",
-            Error = "#DC2626",
-            ErrorContrastText = "#FFFFFF",
-            Warning = "#F59E0B",
-            WarningContrastText = "#FFFFFF",
-            Info = "#06B6D4",
-            InfoContrastText = "#FFFFFF",
-            Success = "#16A34A",
-            SuccessContrastText = "#FFFFFF",
-        },
-        LayoutProperties = new LayoutProperties()
-        {
-            DefaultBorderRadius = "6px"
-        },
-        Typography = new Typography()
-        {
-            Default = new Default()
-            {
-                FontSize = ".8125rem",
-                FontWeight = 400,
-                LineHeight = 1.5
-            },
-            H1 = new H1()
-            {
-                FontSize = "1.75rem",
-                FontWeight = 600,
-                LineHeight = 1.2
-            },
-            H2 = new H2()
-            {
-                FontSize = "1.5rem",
-                FontWeight = 600,
-                LineHeight = 1.3
-            },
-            H3 = new H3()
-            {
-                FontSize = "1.25rem",
-                FontWeight = 600,
-                LineHeight = 1.3
-            },
-            H4 = new H4()
-            {
-                FontSize = "1.1rem",
-                FontWeight = 600,
-                LineHeight = 1.4
-            },
-            H5 = new H5()
-            {
-                FontSize = "0.95rem",
-                FontWeight = 500,
-                LineHeight = 1.4
-            },
-            H6 = new H6()
-            {
-                FontSize = "0.85rem",
-                FontWeight = 500,
-                LineHeight = 1.5
-            }
-        }
-    };
 }
diff --git a/src/TaxBaik.Web.Client/Components/Admin/Pages/ConsultingActivities.razor b/src/TaxBaik.Web.Client/Components/Admin/Pages/ConsultingActivities.razor
index f4ddcaf..b915d8a 100644
--- a/src/TaxBaik.Web.Client/Components/Admin/Pages/ConsultingActivities.razor
+++ b/src/TaxBaik.Web.Client/Components/Admin/Pages/ConsultingActivities.razor
@@ -39,7 +39,7 @@
             Dense="true"
             Hover="true"
             Striped="true"
-            Virtualize="true"
+            
             RowsPerPage="30"
             Class="admin-grid">
             <Columns>
diff --git a/src/TaxBaik.Web.Client/Components/Admin/Pages/Contracts.razor b/src/TaxBaik.Web.Client/Components/Admin/Pages/Contracts.razor
index 349c1d7..c627b9b 100644
--- a/src/TaxBaik.Web.Client/Components/Admin/Pages/Contracts.razor
+++ b/src/TaxBaik.Web.Client/Components/Admin/Pages/Contracts.razor
@@ -51,7 +51,7 @@ else
                     Dense="true"
                     Hover="true"
                     Striped="true"
-                    Virtualize="true"
+                    
                     RowsPerPage="30"
                     SelectedItem="@selectedContract"
                     SelectedItemChanged="OnRowSelected"
diff --git a/src/TaxBaik.Web.Client/Components/Admin/Pages/RevenueTrackings.razor b/src/TaxBaik.Web.Client/Components/Admin/Pages/RevenueTrackings.razor
index 6bec08e..4fafcc3 100644
--- a/src/TaxBaik.Web.Client/Components/Admin/Pages/RevenueTrackings.razor
+++ b/src/TaxBaik.Web.Client/Components/Admin/Pages/RevenueTrackings.razor
@@ -39,7 +39,7 @@
             Dense="true"
             Hover="true"
             Striped="true"
-            Virtualize="true"
+            
             RowsPerPage="30"
             Class="admin-grid">
             <Columns>
diff --git a/src/TaxBaik.Web.Client/Components/Admin/Pages/TaxFilingSchedules.razor b/src/TaxBaik.Web.Client/Components/Admin/Pages/TaxFilingSchedules.razor
index f66625b..95122fa 100644
--- a/src/TaxBaik.Web.Client/Components/Admin/Pages/TaxFilingSchedules.razor
+++ b/src/TaxBaik.Web.Client/Components/Admin/Pages/TaxFilingSchedules.razor
@@ -45,7 +45,7 @@ else
                              Dense="true"
                              Hover="true"
                              Striped="true"
-                             Virtualize="true"
+                             
                              RowsPerPage="30"
                              SelectedItem="@selectedSchedule"
                              SelectedItemChanged="OnRowSelected"
diff --git a/src/TaxBaik.Web.Client/Components/Admin/Pages/TaxProfiles.razor b/src/TaxBaik.Web.Client/Components/Admin/Pages/TaxProfiles.razor
index 3dffc9d..01a6891 100644
--- a/src/TaxBaik.Web.Client/Components/Admin/Pages/TaxProfiles.razor
+++ b/src/TaxBaik.Web.Client/Components/Admin/Pages/TaxProfiles.razor
@@ -41,7 +41,7 @@ else
                     Dense="true"
                     Hover="true"
                     Striped="true"
-                    Virtualize="true"
+                    
                     RowsPerPage="30"
                     SelectedItem="@selectedProfile"
                     SelectedItemChanged="OnRowSelected"
diff --git a/src/TaxBaik.Web.Client/Components/Admin/Shared/AdminShell.razor b/src/TaxBaik.Web.Client/Components/Admin/Shared/AdminShell.razor
index 3848a05..ddabcc9 100644
--- a/src/TaxBaik.Web.Client/Components/Admin/Shared/AdminShell.razor
+++ b/src/TaxBaik.Web.Client/Components/Admin/Shared/AdminShell.razor
@@ -1,11 +1,6 @@
 @inject NavigationManager Navigation
-@inject IJSRuntime JS
 @implements IDisposable
 
-<MudPopoverProvider />
-<MudDialogProvider />
-<MudSnackbarProvider />
-
 <MudLayout Class="admin-shell">
     <MudAppBar Elevation="0" Class="admin-topbar">
         <MudIconButton Icon="@Icons.Material.Filled.Menu"
@@ -43,7 +38,7 @@
         </div>
     </MudAppBar>
 
-    <MudDrawer @bind-open="@drawerOpen"
+    <MudDrawer Open="@drawerOpen"
                Elevation="0"
                Variant="DrawerVariant.Responsive"
                Breakpoint="Breakpoint.Md"
@@ -106,27 +101,13 @@
         Navigation.LocationChanged += OnLocationChanged;
     }
 
-    protected override async Task OnAfterRenderAsync(bool firstRender)
-    {
-        if (firstRender)
-        {
-            await JS.InvokeVoidAsync("taxbaikAdminSession.setContext", "admin/shell", "navigation", "layout", "shell", "shell", "", "main");
-            await JS.InvokeVoidAsync("taxbaikAdminSession.hideLoading");
-        }
-    }
-
     private void OnLocationChanged(object? sender, LocationChangedEventArgs args)
     {
-        var route = new Uri(args.Location).AbsolutePath;
-        _ = JS.InvokeVoidAsync("taxbaikAdminSession.setContext", route, "navigation", "route-change", "layout", "shell", "", route);
-        _ = InvokeAsync(() => JS.InvokeVoidAsync("taxbaikAdminSession.hideLoading"));
     }
 
     private void ToggleDrawer()
     {
         drawerOpen = !drawerOpen;
-        _ = JS.InvokeVoidAsync("taxbaikAdminSession.setContext", "admin/shell", "navigation", "drawer", drawerOpen ? "opened" : "closed", "shell", "", "drawer");
-        _ = JS.InvokeVoidAsync("taxbaikAdminSession.traceUiState", "admin-shell", drawerOpen ? "drawer opened" : "drawer closed");
     }
 
     private void NavigateTo(string url)