fix(onboarding): auto-build Control UI assets

src/wizard/onboarding.ts

@@ -45,6 +45,7 @@ import {
 import { GATEWAY_LAUNCH_AGENT_LABEL } from "../daemon/constants.js";
 import { resolveGatewayProgramArguments } from "../daemon/program-args.js";
 import { resolveGatewayService } from "../daemon/service.js";
+import { ensureControlUiAssetsBuilt } from "../infra/control-ui-assets.js";
 import type { RuntimeEnv } from "../runtime.js";
 import { defaultRuntime } from "../runtime.js";
 import { resolveUserPath, sleep } from "../utils.js";
@@ -491,6 +492,11 @@ export async function runOnboardingWizard(
     runtime.error(`Health check failed: ${String(err)}`);
   }
 
+  const controlUiAssets = await ensureControlUiAssetsBuilt(runtime);
+  if (!controlUiAssets.ok && controlUiAssets.message) {
+    runtime.error(controlUiAssets.message);
+  }
+
   await prompter.note(
     [
       "Add nodes for extra features:",