resolve circle dep

includes/core/domain_cleanup.js

@@ -1,6 +1,7 @@
 const state = require('../infrastructure/state');
 const { removeDomain } = require('./core');
-const { removeVirtualInterface } = require('../networking/virtual_interfaces');
+// Lazy load removeVirtualInterface to avoid circular dependency
+let removeVirtualInterface = null;
 const { freePort } = require('../maintenance/cleanup');
 const { logDebug, logError, logInfo, logWarn } = require('../infrastructure/logger');
 const dgram = require('dgram');
@@ -163,6 +164,10 @@ async function atomicDomainCleanup(domain) {
     if (state.domainToIPMap.has(domain)) {
       try {
         const ip = state.domainToIPMap.get(domain);
+        // Lazy load removeVirtualInterface to avoid circular dependency
+        if (!removeVirtualInterface) {
+          removeVirtualInterface = require('../networking/virtual_interfaces').removeVirtualInterface;
+        }
         await removeVirtualInterface(ip);
         state.domainToIPMap.delete(domain);
         logDebug('DomainCleanup', `Removed IP ${ip} for ${domain}`);