v1.3.1: Add Install-ScheduledTask.ps1 for service deployment

- Creates scheduled task that runs as SYSTEM at boot
- Runs with highest privileges, no user login required
- Auto-restarts on failure (3 attempts, 1 min interval)
- Runs hidden (no console window)
- Supports -Uninstall to remove task

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -25,9 +25,30 @@ This utility monitors a folder for DNC files and automatically strips specified
 
 **Note:** The batch file automatically requests Administrator privileges via UAC prompt.
 
-### Run at Startup (Optional)
+### Run as Scheduled Task (Recommended)
 
-To run automatically at Windows startup:
+For production use, install as a scheduled task that runs as SYSTEM with admin rights:
+
+```powershell
+# Run as Administrator
+.\Install-ScheduledTask.ps1
+
+# With custom settings
+.\Install-ScheduledTask.ps1 -WatchFolder "D:\DNC\Programs" -FileFilter "*.nc"
+
+# To remove
+.\Install-ScheduledTask.ps1 -Uninstall
+```
+
+This creates a task that:
+- Starts at system boot (before any user logs in)
+- Runs as SYSTEM with highest privileges
+- Auto-restarts if it crashes
+- Runs hidden (no console window)
+
+### Run at User Login (Alternative)
+
+To run when a specific user logs in:
 
 1. Press `Win + R`, type `shell:startup`, press Enter
 2. Create a shortcut to `Run-eDNCFix.bat` in the Startup folder
@@ -131,6 +152,7 @@ The script uses exponential backoff (500ms → 1s → 2s → 4s → up to 16s) f
 
 | Version | Date | Changes |
 |---------|------|---------|
+| 1.3.1 | 2025-12-12 | Added Install-ScheduledTask.ps1 for running as SYSTEM service |
 | 1.3.0 | 2025-12-12 | Fixed header UI, live status/stats, auto-elevate to Administrator |
 | 1.2.1 | 2025-12-12 | Added GE Aerospace ASCII banner |
 | 1.2.0 | 2025-12-12 | Immediate processing: 50ms delay, aggressive retry (100ms+), 15 attempts |