fix(gateway): unify listen startup log across bind hosts

src/gateway/server-startup-log.test.ts

@@ -42,4 +42,25 @@ describe("gateway startup log", () => {
 
     expect(warn).not.toHaveBeenCalled();
   });
+
+  it("logs all listen endpoints on a single line", () => {
+    const info = vi.fn();
+    const warn = vi.fn();
+
+    logGatewayStartup({
+      cfg: {},
+      bindHost: "127.0.0.1",
+      bindHosts: ["127.0.0.1", "::1"],
+      port: 18789,
+      log: { info, warn },
+      isNixMode: false,
+    });
+
+    const listenMessages = info.mock.calls
+      .map((call) => call[0])
+      .filter((message) => message.startsWith("listening on "));
+    expect(listenMessages).toEqual([
+      `listening on ws://127.0.0.1:18789, ws://[::1]:18789 (PID ${process.pid})`,
+    ]);
+  });
 });

src/gateway/server-startup-log.ts

@@ -27,13 +27,8 @@ export function logGatewayStartup(params: {
   const formatHost = (host: string) => (host.includes(":") ? `[${host}]` : host);
   const hosts =
     params.bindHosts && params.bindHosts.length > 0 ? params.bindHosts : [params.bindHost];
-  const primaryHost = hosts[0] ?? params.bindHost;
-  params.log.info(
-    `listening on ${scheme}://${formatHost(primaryHost)}:${params.port} (PID ${process.pid})`,
-  );
-  for (const host of hosts.slice(1)) {
-    params.log.info(`listening on ${scheme}://${formatHost(host)}:${params.port}`);
-  }
+  const listenEndpoints = hosts.map((host) => `${scheme}://${formatHost(host)}:${params.port}`);
+  params.log.info(`listening on ${listenEndpoints.join(", ")} (PID ${process.pid})`);
   params.log.info(`log file: ${getResolvedLoggerSettings().file}`);
   if (params.isNixMode) {
     params.log.info("gateway: running in Nix mode (config managed externally)");