Add fixnetworkshare, winrm-setup-package, udc remote-execution suites

- NetworkDriveManager.ps1: S: drive repair utility
- winrm-setup-package: Invoke-RemoteTask helper + Setup-WinRM.bat + HTML guide
- remote-execution/udc: UDC_Update.ps1 and batch wrappers for updating
  DNC controllers on shop-floor PCs
- Invoke-RemoteMaintenance.ps1: substantial rework (~1650 lines)
- Schedule-Maintenance and complete-asset minor updates
- Bump edncfix gitlink to v1.6.0 (2748bfa)
- .gitignore: block inventory.csv/xlsx (CUI) and logs_*.txt (per-host logs)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

remote-execution/Resume-Download.ps1

@@ -0,0 +1,117 @@
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$Url,
+
+    [Parameter(Mandatory=$true)]
+    [string]$Destination
+)
+
+$ErrorActionPreference = 'Stop'
+
+Write-Host "============================================"
+Write-Host "  Resumable File Download"
+Write-Host "============================================"
+Write-Host ""
+Write-Host "Destination: $Destination"
+Write-Host ""
+
+try {
+    # Check for partial file to resume
+    $startBytes = 0
+    if (Test-Path $Destination) {
+        $startBytes = (Get-Item $Destination).Length
+        if ($startBytes -gt 0) {
+            Write-Host "Partial file found: $([math]::Round($startBytes / 1MB, 1)) MB already downloaded"
+            Write-Host "Resuming..."
+            Write-Host ""
+        }
+    }
+
+    # Ensure destination directory exists
+    $destDir = Split-Path $Destination -Parent
+    if ($destDir -and !(Test-Path $destDir)) {
+        New-Item -ItemType Directory -Path $destDir -Force | Out-Null
+    }
+
+    # Build headers
+    $headers = @{}
+    if ($startBytes -gt 0) {
+        $headers["Range"] = "bytes=$startBytes-"
+    }
+
+    # Use Invoke-WebRequest with domain credentials for SharePoint auth
+    $params = @{
+        Uri                = $Url
+        OutFile            = $Destination
+        UseDefaultCredentials = $true
+        UserAgent          = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"
+        Headers            = $headers
+        UseBasicParsing    = $true
+    }
+
+    # If resuming, we need to handle appending manually
+    if ($startBytes -gt 0) {
+        # Download to a temp file, then append
+        $tempFile = "$Destination.partial"
+        $params.OutFile = $tempFile
+
+        Write-Host "Downloading..."
+        Invoke-WebRequest @params
+
+        # Check if we got actual content
+        $tempSize = (Get-Item $tempFile).Length
+        if ($tempSize -eq 0) {
+            Remove-Item $tempFile -Force
+            Write-Host ""
+            Write-Host "WARNING: Server returned 0 bytes. The URL may have expired."
+            Write-Host "Get a fresh SharePoint link and try again."
+            exit 1
+        }
+
+        # Append to existing file
+        $existingBytes = [System.IO.File]::ReadAllBytes($Destination)
+        $newBytes = [System.IO.File]::ReadAllBytes($tempFile)
+        $combined = New-Object byte[] ($existingBytes.Length + $newBytes.Length)
+        [System.Buffer]::BlockCopy($existingBytes, 0, $combined, 0, $existingBytes.Length)
+        [System.Buffer]::BlockCopy($newBytes, 0, $combined, $existingBytes.Length, $newBytes.Length)
+        [System.IO.File]::WriteAllBytes($Destination, $combined)
+        Remove-Item $tempFile -Force
+
+        $totalMB = [math]::Round(($existingBytes.Length + $newBytes.Length) / 1MB, 1)
+        Write-Host ""
+        Write-Host "Download complete: $totalMB MB saved to $Destination"
+    }
+    else {
+        Write-Host "Downloading..."
+        Invoke-WebRequest @params
+
+        # Verify we got actual content
+        $fileSize = (Get-Item $Destination).Length
+        if ($fileSize -eq 0) {
+            Remove-Item $Destination -Force
+            Write-Host ""
+            Write-Host "WARNING: Downloaded 0 bytes. Possible causes:"
+            Write-Host "  - SharePoint URL expired or requires browser login"
+            Write-Host "  - URL is a redirect/login page, not the actual file"
+            Write-Host ""
+            Write-Host "Try this: In Edge, start the download, then go to"
+            Write-Host "edge://downloads and copy the source URL from there."
+            exit 1
+        }
+
+        $totalMB = [math]::Round($fileSize / 1MB, 1)
+        Write-Host ""
+        Write-Host "Download complete: $totalMB MB saved to $Destination"
+    }
+
+} catch {
+    Write-Host ""
+    Write-Host "Error: $_"
+    Write-Host ""
+    if (Test-Path $Destination) {
+        $partialMB = [math]::Round((Get-Item $Destination).Length / 1MB, 1)
+        Write-Host "Partial file kept: $partialMB MB"
+    }
+    Write-Host "Re-run with the same arguments to resume."
+    exit 1
+}