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/Run-UpdateDNCMXHosts.bat

@@ -0,0 +1,32 @@
+@echo off
+REM Run-UpdateDNCMXHosts.bat
+REM Updates FtpHostPrimary/Secondary in DNC\MX registry on remote shopfloor PCs
+REM Usage:
+REM   Run-UpdateDNCMXHosts.bat              -> runs on all PCs in shopfloor-pcs.txt
+REM   Run-UpdateDNCMXHosts.bat G5N9PWM3ESF  -> runs on a single PC (for testing)
+
+echo ============================================================
+echo   UpdateDNCMXHosts - FTP Host Migration
+echo   tsgwp00525.us.ae.ge.com -^> tsgwp00525.wjs.geaerospace.net
+echo ============================================================
+echo.
+
+if not "%~1"=="" (
+    echo Target: %~1
+    echo.
+    powershell.exe -ExecutionPolicy Bypass -File "%~dp0Invoke-RemoteMaintenance.ps1" -ComputerName "%~1" -Task UpdateDNCMXHosts -LogFile
+) else (
+    if not exist "%~dp0shopfloor-pcs.txt" (
+        echo ERROR: shopfloor-pcs.txt not found in %~dp0
+        echo Either place shopfloor-pcs.txt in the same folder or pass a PC name:
+        echo   Run-UpdateDNCMXHosts.bat G5N9PWM3ESF
+        pause
+        exit /b 1
+    )
+    echo Target: shopfloor-pcs.txt
+    echo.
+    powershell.exe -ExecutionPolicy Bypass -File "%~dp0Invoke-RemoteMaintenance.ps1" -ComputerListFile "%~dp0shopfloor-pcs.txt" -Task UpdateDNCMXHosts -LogFile
+)
+
+echo.
+pause