test(e2e): restore Windows agent-profile helpers on list/describe PR

Move writeProcessesDYamlContent and process-owner helpers here where the
agent-profile E2E tests use them, after dropping them from spawn-profiles.

Author: jose-manuel-almaza

Cargo.lock

@@ -6,6 +6,7 @@
 package procmgr
 
 import (
+	"encoding/base64"
 	"fmt"
 	"strings"
 	"testing"
@@ -57,6 +58,16 @@ func ensureWindowsDirPS(dir string) string {
 	return psRemote(`New-Item -ItemType Directory -Force -Path '%s' | Out-Null`, dir)
 }
 
+// writeProcessesDYamlContent writes a processes.d YAML file as UTF-8 without a BOM.
+// Set-Content -Encoding utf8 adds a BOM on Windows PowerShell 5.1, which breaks dd-procmgr parsing.
+func writeProcessesDYamlContent(yamlPath, content string) string {
+	b64 := base64.StdEncoding.EncodeToString([]byte(content))
+	return psRemote(
+		`$ErrorActionPreference='Stop'; $p='%s'; $b = [Convert]::FromBase64String('%s'); [IO.File]::WriteAllBytes($p, $b)`,
+		yamlPath, b64,
+	)
+}
+
 // replaceProcessesDYaml applies old→new in processes.d YAML without a UTF-8 BOM.
 // Set-Content -Encoding utf8 adds a BOM on Windows PowerShell 5.1, which breaks dd-procmgr parsing.
 func replaceProcessesDYaml(yamlPath, old, new string) string {
@@ -66,6 +77,24 @@ func replaceProcessesDYaml(yamlPath, old, new string) string {
 	)
 }
 
+func windowsProcessOwnerByName(host *e2ecomponents.RemoteHost, name string) (string, error) {
+	script := psRemote(
+		`$p = Get-CimInstance Win32_Process -Filter "Name='%s'" | Select-Object -First 1; if ($null -eq $p) { exit 1 }; $o = Invoke-CimMethod -InputObject $p -MethodName GetOwner; if ($o.ReturnValue -ne 0) { exit $o.ReturnValue }; "$($o.Domain)/$($o.User)"`,
+		name,
+	)
+	out, err := host.Execute(script)
+	return strings.TrimSpace(out), err
+}
+
+func windowsProcessOwnerByPID(host *e2ecomponents.RemoteHost, pid string) (string, error) {
+	script := psRemote(
+		`$p = Get-CimInstance Win32_Process -Filter "ProcessId=%s"; if ($null -eq $p) { exit 1 }; $o = Invoke-CimMethod -InputObject $p -MethodName GetOwner; if ($o.ReturnValue -ne 0) { exit $o.ReturnValue }; "$($o.Domain)/$($o.User)"`,
+		pid,
+	)
+	out, err := host.Execute(script)
+	return strings.TrimSpace(out), err
+}
+
 func waitProcmgrDescribeRunning(
 	t *testing.T,
 	host *e2ecomponents.RemoteHost,