Simplify proxy routing and configuration

src/web/utils/clientControls.js

@@ -0,0 +1,31 @@
+export function connectionAction({ connected, selectedTag, configExists }) {
+  if (connected) return { type: 'stop' };
+  if (selectedTag) return { type: 'apply', selectedTag };
+  if (configExists) return { type: 'restart' };
+  return null;
+}
+
+export function formatConnectionDuration(startedAt, now = Date.now()) {
+  const started = Date.parse(startedAt);
+  const totalSeconds = Number.isFinite(started)
+    ? Math.max(0, Math.floor((now - started) / 1000))
+    : 0;
+  const hours = Math.floor(totalSeconds / 3600);
+  const minutes = Math.floor((totalSeconds % 3600) / 60);
+  const seconds = totalSeconds % 60;
+
+  return [hours, minutes, seconds]
+    .map((part) => String(part).padStart(2, '0'))
+    .join(':');
+}
+
+export function subscriptionDomain(subscriptionHost) {
+  return String(subscriptionHost || '').split('/')[0];
+}
+
+export function localProxyUrls(port = 8082) {
+  return {
+    socks5: `socks5://127.0.0.1:${port}`,
+    http: `http://127.0.0.1:${port}`,
+  };
+}