Add Harbor Gateway auto-detection for client routing

src/server/sharedProxy.js

@@ -1,17 +1,3 @@
-function normalizeControlUrl(value) {
-  const raw = String(value || "").trim();
-  if (!raw) return "";
-  const withProtocol = /^https?:\/\//i.test(raw) ? raw : `http://${raw}`;
-  const url = new URL(withProtocol);
-  if (!["http:", "https:"].includes(url.protocol)) {
-    throw new Error("Gateway URL must use http or https");
-  }
-  url.hash = "";
-  url.search = "";
-  url.pathname = url.pathname.replace(/\/api\/shared-proxy\/?$/, "") || "/";
-  return url.toString().replace(/\/$/, "");
-}
-
 function proxyHostFromHeader(hostHeader) {
   const raw = String(hostHeader || "").trim();
   if (!raw) return "";
@@ -22,17 +8,6 @@ function proxyHostFromHeader(hostHeader) {
   return raw.split(":")[0];
 }
 
-function normalizeProxyInfo(proxy) {
-  if (!proxy || typeof proxy !== "object") return null;
-  const host = String(proxy.host || "").trim();
-  const port = Number.parseInt(proxy.port, 10);
-  const protocol = proxy.protocol === "http" ? "http" : "socks5";
-  if (!host || !Number.isInteger(port) || port <= 0 || port > 65535) {
-    return null;
-  }
-  return { host, port, protocol };
-}
-
 export function buildSharedProxyInfo({
   appMode,
   proxyPort,
@@ -67,28 +42,3 @@ export function buildSharedProxyInfo({
     proxy,
   };
 }
-
-export async function checkSharedProxyGateway(controlUrl, fetchImpl = fetch) {
-  const baseUrl = normalizeControlUrl(controlUrl);
-  const response = await fetchImpl(`${baseUrl}/api/shared-proxy`, {
-    headers: { accept: "application/json" },
-  });
-  const data = await response.json().catch(() => ({}));
-  if (!response.ok || data.success === false) {
-    throw new Error(data.error || `Gateway returned ${response.status}`);
-  }
-  if (!data.available) {
-    throw new Error("Gateway shared proxy is not available");
-  }
-
-  const sharedProxy = normalizeProxyInfo(data.proxy);
-  if (!sharedProxy) {
-    throw new Error("Gateway returned invalid shared proxy settings");
-  }
-
-  return {
-    sharedProxyEnabled: true,
-    sharedProxyControlUrl: baseUrl,
-    sharedProxy,
-  };
-}