Add NinjaOne client configuration and upload test

scripts/configure-ocsentinel-ninja.ps1

@@ -0,0 +1,58 @@
+[CmdletBinding()]
+param(
+    [string]$WebhookUrl = "",
+    [string]$SecretValue = ""
+)
+
+$ErrorActionPreference = "Stop"
+
+function Get-NinjaValue {
+    param([Parameter(Mandatory)][string]$Name)
+
+    $value = [Environment]::GetEnvironmentVariable($Name, "Process")
+    return if ($null -eq $value) { "" } else { $value.Trim() }
+}
+
+if ([string]::IsNullOrWhiteSpace($WebhookUrl)) {
+    $WebhookUrl = Get-NinjaValue -Name "webhookurl"
+}
+
+if ([string]::IsNullOrWhiteSpace($SecretValue)) {
+    $SecretValue = Get-NinjaValue -Name "secretvalue"
+}
+
+if ([string]::IsNullOrWhiteSpace($WebhookUrl) -or [string]::IsNullOrWhiteSpace($SecretValue)) {
+    throw "WebhookUrl and SecretValue must be supplied as NinjaOne script variables."
+}
+
+$installRoot = Join-Path $env:ProgramFiles "OCSentinel"
+$configPath = Join-Path $installRoot "config\ocsentinel-client.json"
+$secretScript = Join-Path $installRoot "scripts\protect-ocsentinel-secret.ps1"
+$monitorScript = Join-Path $installRoot "scripts\run-ocsentinel-monitor.ps1"
+$secretPath = "C:\ProgramData\OCSentinel\secrets\ocsentinel-upload-secret.dat"
+
+foreach ($path in @($configPath, $secretScript, $monitorScript)) {
+    if (-not (Test-Path -LiteralPath $path)) {
+        throw "OCSentinel installation is incomplete. Missing: $path"
+    }
+}
+
+$config = Get-Content -LiteralPath $configPath -Raw | ConvertFrom-Json
+$config.n8nWebhookUrl = $WebhookUrl
+$config.environment = "production"
+$config | ConvertTo-Json -Depth 10 | Set-Content -LiteralPath $configPath -Encoding UTF8
+Write-Host "OCSentinel upload endpoint configured."
+
+& powershell.exe -NoProfile -ExecutionPolicy Bypass -File $secretScript -SecretValue $SecretValue
+if ($LASTEXITCODE -ne 0) {
+    throw "Writing the protected upload secret failed with code $LASTEXITCODE"
+}
+
+Write-Host "Running signed OCSentinel test scan and upload."
+& powershell.exe -NoProfile -ExecutionPolicy Bypass -File $monitorScript `
+    -Mode status `
+    -ClientConfigPath $configPath `
+    -SecretPath $secretPath `
+    -UploadMode required
+
+exit $LASTEXITCODE