Add configurable UDP scanning and numeric IP sorting

- Add UDP_SCAN_ENABLED and UDP_PORTS environment variables to control UDP scanning
- UDP scanning disabled by default for faster scans
- Support port ranges (100-200), lists (53,67,68), or mixed formats
- Sort IPs numerically by octets in site management modal

.env.example

@@ -57,6 +57,17 @@ SCHEDULER_EXECUTORS=2
 # Recommended: 3 for typical usage
 SCHEDULER_JOB_DEFAULTS_MAX_INSTANCES=3
 
+# ================================
+# UDP Scanning Configuration
+# ================================
+# Enable UDP port scanning (disabled by default as it's slower)
+UDP_SCAN_ENABLED=false
+
+# UDP ports to scan when enabled
+# Supports ranges (e.g., 100-200), lists (e.g., 53,67,68), or mixed (e.g., 53,67-69,123)
+# Default: common UDP services
+UDP_PORTS=53,67,68,69,123,161,500,514,1900
+
 # ================================
 # Initial Password (First Run)
 # ================================