fix: use selectedHost for localHttpUrl/localWsUrl when binding specific interface

When a specific non-loopback host is selected in network-accessible mode,
the server binds only to that interface. The local URLs must use the same
host instead of hardcoded 127.0.0.1, otherwise the desktop app cannot
reach the backend (connection refused on loopback).

Author: cursoragent

apps/desktop/src/serverExposure.ts

@@ -130,8 +130,8 @@ export function resolveDesktopServerExposure(input: {
   return {
     mode: input.mode,
     bindHost: selectedHost,
-    localHttpUrl,
-    localWsUrl,
+    localHttpUrl: `http://${selectedHost}:${input.port}`,
+    localWsUrl: `ws://${selectedHost}:${input.port}`,
     endpointUrl: `http://${selectedHost}:${input.port}`,
     advertisedHost: selectedHost,
     availableHosts,