Update socat to connect to VM SSH on port 2222

Windows SSH moved from port 22 to 2222, freeing port 22 for IBM i portproxy.

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

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

apps/rego-tunnel/vpn_scripts/start.sh

@@ -67,9 +67,9 @@ get_container_ip() {
   iptables -C FORWARD -d "$WINDOWS_IP" -j ACCEPT 2>/dev/null || \
   iptables -A FORWARD -d "$WINDOWS_IP" -j ACCEPT
 
-  # Forward port 2222 to VM's SSH (22) for VM access
+  # Forward port 2222 to VM's SSH (2222) for VM access
   pkill -f "socat.*:2222" 2>/dev/null || true
-  socat TCP-LISTEN:2222,fork,reuseaddr TCP:"$WINDOWS_IP":22 &
+  socat TCP-LISTEN:2222,fork,reuseaddr TCP:"$WINDOWS_IP":2222 &
   echo "[rego-tunnel] SSH to VM available on port 2222"
 
   # Add DNAT rules for port forwarding