fix: use shared network hosts configuration for better proxy setup

- Normalize all localhost variants to 'localhost' for consistent proxy
configuration in Vite and server setup.
- use one source of truth for network hosts functions by moving them to
a shared
- log production and development urls

shared/networkHosts.js

@@ -0,0 +1,22 @@
+export function isWildcardHost(host) {
+  return host === '0.0.0.0' || host === '::';
+}
+
+export function isLoopbackHost(host) {
+  return host === 'localhost' || host === '127.0.0.1' || host === '::1' || host === '[::1]';
+}
+
+export function normalizeLoopbackHost(host) {
+  if (!host) {
+    return host;
+  }
+  return isLoopbackHost(host) ? 'localhost' : host;
+}
+
+// Use localhost for connectable loopback and wildcard addresses in browser-facing URLs.
+export function getConnectableHost(host) {
+  if (!host) {
+    return 'localhost';
+  }
+  return isWildcardHost(host) || isLoopbackHost(host) ? 'localhost' : host;
+}