feat(ups): unelte pentru testul de autonomie cu scoaterea din priza

set-praguri.ps1 schimba pragurile de oprire fara sa atinga parola SMTP si
reporneste taskul, pentru ca ups-monitor.ps1 citeste configuratia o singura
data, la pornirea buclei.

trace-baterie.ps1 scrie o citire la fiecare 20 s intr-un CSV local, iar
start-trace.ps1 il inregistreaza ca task programat sub SYSTEM. Local si
detasat, pentru ca intr-o pana reala reteaua cade odata cu curentul daca
switch-ul nu e pe UPS: sesiunea SSH devine oarba si emailurile esueaza, deci
CSV-ul de pe server ramane singura sursa de date. Taskul are aceleasi
AllowStartIfOnBatteries / DontStopIfGoingOnBatteries ca monitorul - fara ele
Windows l-ar opri exact cand incepe ce vrem sa masuram.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RRyaDj39hPQ89SZS6URRpS

scripts/ups-monitor/start-trace.ps1

@@ -0,0 +1,69 @@
+<#
+.SYNOPSIS
+    Porneste (sau opreste) inregistrarea curbei de descarcare, ca task programat
+    sub SYSTEM - ca sa nu moara odata cu sesiunea SSH.
+
+.EXAMPLE
+    powershell -ExecutionPolicy Bypass -File .\start-trace.ps1
+    powershell -ExecutionPolicy Bypass -File .\start-trace.ps1 -Stop
+#>
+[CmdletBinding()]
+param(
+    [string]$InstallDir = 'C:\ROMFAST\ups-monitor',
+    [ValidateRange(5, 300)][int]$IntervalSecunde = 20,
+    [switch]$Stop
+)
+
+Set-StrictMode -Version 2.0
+$ErrorActionPreference = 'Stop'
+
+$TaskName = 'ROMFAST UPS Trace'
+$csv = Join-Path $InstallDir 'log\trace-baterie.csv'
+$stopFile = Join-Path $InstallDir 'log\STOP-TRACE'
+
+if ($Stop) {
+    New-Item -ItemType File -Path $stopFile -Force | Out-Null
+    Start-Sleep -Seconds ($IntervalSecunde + 5)
+    if (Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue) {
+        Stop-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+        Unregister-ScheduledTask -TaskName $TaskName -Confirm:$false
+    }
+    Remove-Item -LiteralPath $stopFile -Force -ErrorAction SilentlyContinue
+    Write-Host "Inregistrare oprita. Datele raman in $csv"
+    if (Test-Path -LiteralPath $csv) {
+        Write-Host ''
+        Get-Content -LiteralPath $csv -Tail 10 | ForEach-Object { "  $_" }
+    }
+    return
+}
+
+$script = Join-Path $InstallDir 'trace-baterie.ps1'
+if (-not (Test-Path -LiteralPath $script)) {
+    throw "Lipseste $script - copiaza-l intai in $InstallDir"
+}
+
+$action = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument (
+    '-NoProfile -NonInteractive -ExecutionPolicy Bypass -File "{0}" -IntervalSecunde {1}' -f $script, $IntervalSecunde)
+
+# Aceleasi doua setari ca la monitor: fara ele, Windows opreste taskul exact cand
+# serverul trece pe baterie - adica exact cand incepe ce vrem sa masuram.
+$settings = New-ScheduledTaskSettingsSet `
+    -AllowStartIfOnBatteries `
+    -DontStopIfGoingOnBatteries `
+    -MultipleInstances IgnoreNew `
+    -ExecutionTimeLimit ([TimeSpan]::Zero)
+
+$principal = New-ScheduledTaskPrincipal -UserId 'NT AUTHORITY\SYSTEM' -LogonType ServiceAccount -RunLevel Highest
+
+if (Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue) {
+    Unregister-ScheduledTask -TaskName $TaskName -Confirm:$false
+}
+Register-ScheduledTask -TaskName $TaskName -Description 'Inregistreaza curba de descarcare a UPS-ului in timpul unui test de autonomie.' `
+    -Action $action -Settings $settings -Principal $principal | Out-Null
+
+Start-ScheduledTask -TaskName $TaskName
+Start-Sleep -Seconds ($IntervalSecunde + 8)
+
+Get-ScheduledTask -TaskName $TaskName | Format-Table -AutoSize TaskName, State
+Write-Host "CSV: $csv"
+if (Test-Path -LiteralPath $csv) { Get-Content -LiteralPath $csv -Tail 5 | ForEach-Object { "  $_" } }