feat: refine branded operator experience

Add the MBN-branded startup intro, semantic sidebar icons, and refined card-based operator visuals. Strengthen packaged UI and input smoke coverage for the updated experience.

scripts/Invoke-LegacyPackageInputSmoke.ps1

@@ -1798,11 +1798,14 @@ function Assert-DebugAppXMatchesLatestPackage([string]$InstallLocation) {
     $archive = [IO.Compression.ZipFile]::OpenRead($msix)
     try {
         $expectedFiles = @(
+            'AppxManifest.xml',
+            'Assets/StartupHero.png',
             'MBN_STOCK_WEBVIEW.Core.dll',
             'MBN_STOCK_WEBVIEW.Infrastructure.dll',
             'MBN_STOCK_WEBVIEW.LegacyApplication.dll',
             'MBN_STOCK_WEBVIEW.LegacyBridge.dll',
             'MBN_STOCK_WEBVIEW.LegacyParityApp.dll',
+            'Web/Brand/logo.png',
             'Web/app.js',
             'Web/index.html',
             'Web/playout-ui.js',
@@ -1833,12 +1836,19 @@ function Assert-DebugAppXMatchesLatestPackage([string]$InstallLocation) {
         $archive.Dispose()
     }
 
-    $sourceAppJs = Join-Path $projectRoot 'Web\app.js'
-    $installedAppJs = Join-Path $InstallLocation 'Web\app.js'
-    if (-not [IO.File]::Exists($sourceAppJs) -or
-        (Get-FileHash -LiteralPath $sourceAppJs -Algorithm SHA256).Hash -cne
-            (Get-FileHash -LiteralPath $installedAppJs -Algorithm SHA256).Hash) {
-        Throw-SafeFailure 'The registered Debug AppX does not contain the current Web application source.'
+    foreach ($relativeSource in @(
+            'Web\app.js',
+            'Web\index.html',
+            'Web\styles.css',
+            'Web\workspace-navigation.js')) {
+        $sourcePath = Join-Path $projectRoot $relativeSource
+        $installedPath = Join-Path $InstallLocation $relativeSource
+        if (-not [IO.File]::Exists($sourcePath) -or
+            -not [IO.File]::Exists($installedPath) -or
+            (Get-FileHash -LiteralPath $sourcePath -Algorithm SHA256).Hash -cne
+                (Get-FileHash -LiteralPath $installedPath -Algorithm SHA256).Hash) {
+            Throw-SafeFailure 'The registered Debug AppX does not contain the current Web application source.'
+        }
     }
 }
 
@@ -3061,6 +3071,60 @@ function Assert-ExactApplicationStillRunning(
     }
 }
 
+function Wait-StartupIntroDismissed(
+    [Diagnostics.Process]$Application,
+    [string]$ExpectedPath) {
+    Add-Type -AssemblyName UIAutomationClient
+    Add-Type -AssemblyName UIAutomationTypes
+
+    $deadline = [datetime]::UtcNow.AddSeconds(4)
+    $nameCondition = [Windows.Automation.PropertyCondition]::new(
+        [Windows.Automation.AutomationElement]::NameProperty,
+        '매일경제TV V-STOCK 시작 화면')
+
+    while ($true) {
+        Assert-ExactApplicationStillRunning $Application $ExpectedPath
+        Assert-NoTornadoConnection $Application.Id
+        $Application.Refresh()
+        $root = [Windows.Automation.AutomationElement]::FromHandle(
+            $Application.MainWindowHandle)
+        if ($null -eq $root) {
+            Throw-SafeFailure 'The main window is unavailable while waiting for the startup intro.'
+        }
+
+        $intro = $root.FindFirst(
+            [Windows.Automation.TreeScope]::Descendants,
+            $nameCondition)
+        $introIsVisible = $false
+        if ($null -ne $intro) {
+            try {
+                $introIsVisible = -not $intro.Current.IsOffscreen
+            }
+            catch [System.Windows.Automation.ElementNotAvailableException] {
+                $introIsVisible = $false
+            }
+        }
+
+        if (-not $introIsVisible) {
+            Assert-ExactApplicationStillRunning $Application $ExpectedPath
+            Assert-NoTornadoConnection $Application.Id
+            return
+        }
+        if ([datetime]::UtcNow -ge $deadline) {
+            break
+        }
+
+        $remainingMilliseconds = [int][Math]::Max(
+            1,
+            [Math]::Min(50, ($deadline - [datetime]::UtcNow).TotalMilliseconds))
+        Start-Sleep -Milliseconds $remainingMilliseconds
+    }
+
+    Assert-ExactApplicationStillRunning $Application $ExpectedPath
+    Assert-NoTornadoConnection $Application.Id
+    Throw-SafeFailure 'The startup intro remained visible beyond its four-second bound.'
+}
+
 function Assert-NoExistingContentDialog([IntPtr]$MainWindowHandle) {
     Add-Type -AssemblyName UIAutomationClient
     Add-Type -AssemblyName UIAutomationTypes
@@ -4091,6 +4155,9 @@ try {
         $script:ApplicationProcess `
         ([datetime]::UtcNow.AddSeconds($LaunchTimeoutSeconds)))
     Assert-NoTornadoConnection $script:ApplicationProcess.Id
+    Wait-StartupIntroDismissed `
+        $script:ApplicationProcess `
+        $registration.Executable
 
     $script:Phase = 'real input harness'
     $harnessRun = Invoke-NodeHarnessUnderTcpWatch `