fix(branding): guard reg unload, set ErrorAction in libs, accent field rename, test hive unload + assertions

windows/branding/Apply-Branding.ps1

@@ -47,7 +47,11 @@ function Invoke-WithHive {
     & reg load "HKLM\$Name" $HivePath | Out-Null
     if ($LASTEXITCODE -ne 0) { throw "reg load $Name ($HivePath) failed" }
     try { & $Body "Registry::HKEY_LOCAL_MACHINE\$Name" }
-    finally { [gc]::Collect(); Start-Sleep -Milliseconds 500; & reg unload "HKLM\$Name" | Out-Null }
+    finally {
+        [gc]::Collect(); Start-Sleep -Milliseconds 500
+        & reg unload "HKLM\$Name" | Out-Null
+        if ($LASTEXITCODE -ne 0) { Write-Warning "reg unload $Name failed ($LASTEXITCODE) — hive may be leaked" }
+    }
 }
 
 if ($Mode -eq 'Offline') {

windows/branding/branding.manifest.json

@@ -19,7 +19,7 @@
   "desktop": {
     "wallpaper": "wallpaper.jpg",
     "theme": "SilverMetal.theme",
-    "accentBgr": "00d4ff",
+    "accentColor": "00d4ff",
     "darkMode": true,
     "lockWallpaper": false
   }

windows/branding/lib/BrandingLayers.ps1

@@ -1,4 +1,5 @@
 Set-StrictMode -Version Latest
+$ErrorActionPreference = 'Stop'
 . "$PSScriptRoot\RegistryHelpers.ps1"
 
 function Set-OemInformation {
@@ -34,8 +35,8 @@ function Set-DesktopBranding {
         Set-SmRegValue -Root $DefaultUserRoot -SubKey $p -Name 'AppsUseLightTheme'   -Type DWord -Value 0
         Set-SmRegValue -Root $DefaultUserRoot -SubKey $p -Name 'SystemUsesLightTheme' -Type DWord -Value 0
     }
-    # Accent (cyan). BGR DWORD from manifest hex (stored little-endian as 0x00BBGGRR).
-    $bgr = [Convert]::ToInt32($Manifest.desktop.accentBgr,16)
+    # Accent color as COLORREF (0x00RRGGBB). #00d4ff = cyan.
+    $bgr = [Convert]::ToInt32($Manifest.desktop.accentColor,16)
     Set-SmRegValue -Root $DefaultUserRoot -SubKey 'Software\Microsoft\Windows\DWM' -Name 'AccentColor'       -Type DWord -Value $bgr
     Set-SmRegValue -Root $DefaultUserRoot -SubKey 'Software\Microsoft\Windows\DWM' -Name 'ColorizationColor' -Type DWord -Value $bgr
     if (-not $Manifest.desktop.lockWallpaper) { return }

windows/branding/lib/RegistryHelpers.ps1

@@ -1,4 +1,5 @@
 Set-StrictMode -Version Latest
+$ErrorActionPreference = 'Stop'
 
 # Write a registry value under an arbitrary hive root (a live HKLM:/HKCU: path
 # OR a loaded offline hive exposed as a PSDrive). Creates intermediate keys.

windows/tests/Branding.Tests.ps1

@@ -38,6 +38,7 @@ Describe 'Branding layer writers' {
         $k.Manufacturer | Should -Be 'SilverLABS'
         $k.Model        | Should -Be 'SilverMetal Windows'
         $k.SupportURL   | Should -Be 'https://silverlabs.uk'
+        $k.SupportHours | Should -Be '24/7 community + paid SLA'
         $k.Logo         | Should -Be 'C:\Windows\System32\oemlogo.bmp'
     }
 
@@ -58,6 +59,7 @@ Describe 'Branding layer writers' {
         $k = Get-ItemProperty "$script:sw\Policies\Microsoft\FVE"
         $k.UseCustomRecoveryMessage | Should -Be 1
         $k.RecoveryMessage          | Should -Be 'SilverMetal Windows. Locked out? silverlabs.uk'
+        $k.RecoveryUrl              | Should -Be 'https://silverlabs.uk'
     }
 }
 
@@ -70,6 +72,7 @@ Describe 'Apply-Branding -Mode Offline' {
         foreach ($h in @("$script:mount\Windows\System32\config\SOFTWARE","$script:mount\Users\Default\NTUSER.DAT")) {
             reg load 'HKLM\SM_SEED' (New-Item -ItemType File -Force $h | Select-Object -Expand FullName) 2>$null | Out-Null
         }
+        & reg unload 'HKLM\SM_SEED' 2>$null | Out-Null
         # The above seed is best-effort; if reg can't init an empty file, the apply
         # script creates the hives via reg load of the path it expects.
     }