refactor(webchat): SwiftUI-only WebChat UI

# Conflicts:
#	apps/macos/Package.swift

src/cli/gateway-cli.ts

@@ -42,10 +42,6 @@ export function registerGatewayCli(program: Command) {
     .command("gateway")
     .description("Run the WebSocket Gateway")
     .option("--port <port>", "Port for the gateway WebSocket", "18789")
-    .option(
-      "--webchat-port <port>",
-      "Port for the loopback WebChat HTTP server (default 18788)",
-    )
     .option(
       "--token <token>",
       "Shared token required in connect.params.auth.token (default: CLAWDIS_GATEWAY_TOKEN env if set)",
@@ -63,16 +59,6 @@ export function registerGatewayCli(program: Command) {
         defaultRuntime.error("Invalid port");
         defaultRuntime.exit(1);
       }
-      const webchatPort = opts.webchatPort
-        ? Number.parseInt(String(opts.webchatPort), 10)
-        : undefined;
-      if (
-        webchatPort !== undefined &&
-        (Number.isNaN(webchatPort) || webchatPort <= 0)
-      ) {
-        defaultRuntime.error("Invalid webchat port");
-        defaultRuntime.exit(1);
-      }
       if (opts.force) {
         try {
           const killed = forceFreePort(port);
@@ -143,7 +129,7 @@ export function registerGatewayCli(program: Command) {
       process.once("SIGINT", onSigint);
 
       try {
-        server = await startGatewayServer(port, { webchatPort });
+        server = await startGatewayServer(port);
       } catch (err) {
         if (err instanceof GatewayLockError) {
           defaultRuntime.error(`Gateway failed to start: ${err.message}`);