fix: restore CLI validation and test baseline (#1857)

Fixed lazy CLI helper imports for tunnel flows
Restored update command version detection
Made web test and dead-code commands run reliably

packages/web/bin/lib/cli-network.js

@@ -145,6 +145,7 @@ export {
   resolveServeHost,
   resolveApiHost,
   formatHostForUrl,
+  isUnsafeBrowserPort,
   buildLocalUrl,
   detectLanIPv4Address,
   assertSafeBrowserPort,