diff --git a/qa/scenarios/ui/control-ui-service-worker-update.yaml b/qa/scenarios/ui/control-ui-service-worker-update.yaml
new file mode 100644
index 000000000000..d970e391cd24
--- /dev/null
+++ b/qa/scenarios/ui/control-ui-service-worker-update.yaml
@@ -0,0 +1,31 @@
+title: Control UI production service-worker update
+
+scenario:
+  id: control-ui-service-worker-update
+  surface: control-ui
+  coverage:
+    primary:
+      - control-ui.service-worker-updates
+  objective: >-
+    Prove a production Control UI worker updates in place on one browser origin
+    and serves the newly built application assets.
+  successCriteria:
+    - Chromium loads a production Control UI build and becomes controlled by its activated worker.
+    - A second production build is published at the same origin.
+    - The installed registration discovers and activates the updated worker.
+    - The updated worker claims the page and the production update message reloads it.
+    - A build-specific asset fetched while controlled matches the second build, not stale output.
+  docsRefs:
+    - docs/web/control-ui.md
+  codeRefs:
+    - ui/src/main.ts
+    - ui/public/sw.js
+    - ui/src/e2e/service-worker-update.e2e.test.ts
+    - ui/src/test-helpers/control-ui-e2e.ts
+  execution:
+    kind: playwright
+    path: ui/src/e2e/service-worker-update.e2e.test.ts
+    testNamePattern: activates the next production worker and serves its refreshed build asset
+    summary: >-
+      Real Chromium proof across two production Control UI builds, native worker
+      update and activation, page takeover, reload, and refreshed hashed assets.
diff --git a/ui/src/e2e/service-worker-update.e2e.test.ts b/ui/src/e2e/service-worker-update.e2e.test.ts
new file mode 100644
index 000000000000..d98999581010
--- /dev/null
+++ b/ui/src/e2e/service-worker-update.e2e.test.ts
@@ -0,0 +1,243 @@
+import { createHash } from "node:crypto";
+import { mkdir, mkdtemp, readFile, readdir, rm } from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import { chromium, type Browser, type Page } from "playwright";
+import { afterAll, beforeAll, describe, expect, it } from "vitest";
+import {
+  buildProductionControlUiE2e,
+  canRunPlaywrightChromium,
+  resolvePlaywrightChromiumExecutablePath,
+  startProductionControlUiE2eServer,
+  type ControlUiE2eServer,
+} from "../test-helpers/control-ui-e2e.ts";
+
+const chromiumExecutablePath = resolvePlaywrightChromiumExecutablePath(chromium.executablePath());
+const artifactDir = path.resolve(".artifacts/control-ui-e2e/service-worker-update");
+const captureUiProof = process.env.OPENCLAW_CAPTURE_UI_PROOF === "1";
+const workerUpdateVersionsStorageKey = "openclaw.control-ui-e2e.worker-update-versions";
+
+const buildA = "service-worker-build-a";
+const buildB = "service-worker-build-b";
+
+type BuildAsset = {
+  path: string;
+  sha256: string;
+};
+
+let browser: Browser;
+let outDir: string;
+let server: ControlUiE2eServer;
+
+async function findBuildAsset(buildId: string): Promise<BuildAsset> {
+  const assetsDir = path.join(outDir, "assets");
+  for (const fileName of await readdir(assetsDir)) {
+    if (!fileName.endsWith(".js")) {
+      continue;
+    }
+    const source = await readFile(path.join(assetsDir, fileName));
+    if (source.includes(Buffer.from(buildId))) {
+      return {
+        path: `assets/${fileName}`,
+        sha256: createHash("sha256").update(source).digest("hex"),
+      };
+    }
+  }
+  throw new Error(`Production Control UI output did not contain build id ${buildId}`);
+}
+
+async function ensureControlledPage(page: Page, pageErrors: string[], expectedBuildId: string) {
+  const registration = await page.evaluate(async (workerBuildId) => {
+    const ready = navigator.serviceWorker.ready.then((value) => ({
+      activeState: value.active?.state ?? null,
+      controlled: navigator.serviceWorker.controller !== null,
+      error: null,
+    }));
+    const timeout = new Promise<{
+      activeState: null;
+      controlled: boolean;
+      error: string;
+    }>((resolve) => {
+      window.setTimeout(() => {
+        void (async () => {
+          const registrations = await navigator.serviceWorker.getRegistrations();
+          const response = await fetch(`/sw.js?v=${workerBuildId}`);
+          resolve({
+            activeState: null,
+            controlled: navigator.serviceWorker.controller !== null,
+            error: JSON.stringify({
+              isSecureContext,
+              location: window.location.href,
+              registrations: registrations.map((value) => ({
+                active: value.active?.state ?? null,
+                activeScriptUrl: value.active?.scriptURL ?? null,
+                installing: value.installing?.state ?? null,
+                scope: value.scope,
+                waiting: value.waiting?.state ?? null,
+              })),
+              serviceWorker: {
+                contentType: response.headers.get("content-type"),
+                status: response.status,
+              },
+            }),
+          });
+        })();
+      }, 10_000);
+    });
+    return Promise.race([ready, timeout]);
+  }, expectedBuildId);
+  if (registration.error) {
+    throw new Error(
+      `Service worker did not become ready: ${registration.error}; page errors: ${JSON.stringify(pageErrors)}`,
+    );
+  }
+  await page.waitForFunction(async () => {
+    const value = await navigator.serviceWorker.ready;
+    return value.active?.state === "activated";
+  });
+  if (!registration.controlled) {
+    await page.reload();
+  }
+  await page.waitForFunction(() => navigator.serviceWorker?.controller?.state === "activated");
+}
+
+async function readWorkerUpdateVersions(page: Page): Promise<string[]> {
+  return page.evaluate((storageKey) => {
+    const stored = JSON.parse(sessionStorage.getItem(storageKey) ?? "[]") as unknown;
+    return Array.isArray(stored)
+      ? stored.filter((value): value is string => typeof value === "string")
+      : [];
+  }, workerUpdateVersionsStorageKey);
+}
+
+async function fetchControlledAsset(
+  page: Page,
+  assetPath: string,
+): Promise<{ controllerState: string | null; sha256: string }> {
+  return page.evaluate(async (relativePath) => {
+    const controller = navigator.serviceWorker.controller;
+    if (controller && controller.state !== "activated") {
+      await new Promise<void>((resolve) => {
+        controller.addEventListener(
+          "statechange",
+          () => {
+            if (controller.state === "activated") {
+              resolve();
+            }
+          },
+          { once: true },
+        );
+      });
+    }
+    const response = await fetch(new URL(relativePath, window.location.href));
+    if (!response.ok) {
+      throw new Error(`Build asset request failed with HTTP ${response.status}`);
+    }
+    const digest = await crypto.subtle.digest("SHA-256", await response.arrayBuffer());
+    return {
+      controllerState: controller?.state ?? null,
+      sha256: [...new Uint8Array(digest)]
+        .map((byte) => byte.toString(16).padStart(2, "0"))
+        .join(""),
+    };
+  }, assetPath);
+}
+
+describe("Control UI service-worker production update E2E", () => {
+  beforeAll(async () => {
+    if (!canRunPlaywrightChromium(chromiumExecutablePath)) {
+      throw new Error(`Playwright Chromium is unavailable at ${chromiumExecutablePath}`);
+    }
+    outDir = await mkdtemp(path.join(os.tmpdir(), "openclaw-service-worker-update-"));
+    server = await startProductionControlUiE2eServer(outDir, buildA);
+    browser = await chromium.launch({ executablePath: chromiumExecutablePath });
+  }, 120_000);
+
+  afterAll(async () => {
+    await browser?.close();
+    await server?.close();
+    if (outDir) {
+      await rm(outDir, { force: true, recursive: true });
+    }
+  });
+
+  it("activates the next production worker and serves its refreshed build asset", async () => {
+    if (captureUiProof) {
+      await mkdir(artifactDir, { recursive: true });
+    }
+    const context = await browser.newContext({
+      locale: "en-US",
+      serviceWorkers: "allow",
+      viewport: { height: 720, width: 1280 },
+      ...(captureUiProof
+        ? { recordVideo: { dir: artifactDir, size: { height: 720, width: 1280 } } }
+        : {}),
+    });
+    // An update keeps the incumbent script URL while installing changed bytes.
+    // The worker emits its embedded version only after clients.claim() resolves.
+    await context.addInitScript((storageKey) => {
+      navigator.serviceWorker.addEventListener("message", (event) => {
+        if (event.data?.type !== "sw-updated" || typeof event.data.version !== "string") {
+          return;
+        }
+        const stored = JSON.parse(sessionStorage.getItem(storageKey) ?? "[]") as unknown;
+        const versions = Array.isArray(stored)
+          ? stored.filter((value): value is string => typeof value === "string")
+          : [];
+        versions.push(event.data.version);
+        sessionStorage.setItem(storageKey, JSON.stringify(versions));
+      });
+    }, workerUpdateVersionsStorageKey);
+    const page = await context.newPage();
+    const pageErrors: string[] = [];
+    page.on("pageerror", (error) => pageErrors.push(`${error.name}:${error.message}`));
+
+    try {
+      expect((await page.goto(`${server.baseUrl}chat`))?.status()).toBe(200);
+      await ensureControlledPage(page, pageErrors, buildA);
+      await expect.poll(() => readWorkerUpdateVersions(page)).toContain(buildA);
+
+      const assetA = await findBuildAsset(buildA);
+      const initialAsset = await fetchControlledAsset(page, assetA.path);
+      expect(initialAsset).toEqual({
+        controllerState: "activated",
+        sha256: assetA.sha256,
+      });
+      await expect
+        .poll(() => page.evaluate(() => caches.keys()))
+        .toContain(`openclaw-control-${buildA}`);
+
+      await buildProductionControlUiE2e(outDir, buildB);
+      const assetB = await findBuildAsset(buildB);
+      expect(assetB.path).not.toBe(assetA.path);
+      expect(assetB.sha256).not.toBe(assetA.sha256);
+
+      const reloaded = page.waitForEvent("domcontentloaded");
+      await page.evaluate(() => {
+        void navigator.serviceWorker.ready.then((registration) => registration.update());
+      });
+      await reloaded;
+      await ensureControlledPage(page, pageErrors, buildB);
+      await expect.poll(() => readWorkerUpdateVersions(page)).toContain(buildB);
+
+      await expect
+        .poll(() => page.evaluate(() => caches.keys()))
+        .toContain(`openclaw-control-${buildB}`);
+      const refreshedAsset = await fetchControlledAsset(page, assetB.path);
+      expect(refreshedAsset).toEqual({
+        controllerState: "activated",
+        sha256: assetB.sha256,
+      });
+      expect(refreshedAsset.sha256).not.toBe(initialAsset.sha256);
+
+      if (captureUiProof) {
+        await page.screenshot({
+          animations: "disabled",
+          path: path.join(artifactDir, "updated-worker-controlled-page.png"),
+        });
+      }
+    } finally {
+      await context.close();
+    }
+  }, 120_000);
+});
diff --git a/ui/src/test-helpers/control-ui-e2e.ts b/ui/src/test-helpers/control-ui-e2e.ts
index 551edaa1c1a7..3efca30b29b8 100644
--- a/ui/src/test-helpers/control-ui-e2e.ts
+++ b/ui/src/test-helpers/control-ui-e2e.ts
@@ -447,15 +447,13 @@ function controlUiE2ePreviewConfigPlugin(): Plugin {
   };
 }
 
-export async function startBundledControlUiE2eServer(outDir: string): Promise<ControlUiE2eServer> {
-  const [{ build, preview }, { default: controlUiViteConfig }] = await Promise.all([
-    import("vite"),
-    import("../../vite.config.ts"),
-  ]);
-  const port = await resolveAvailableLoopbackPort();
+function createBundledControlUiE2eConfig(
+  controlUiViteConfig: (options: { outDir?: string }) => InlineConfig,
+  outDir: string,
+): InlineConfig {
   const config = controlUiViteConfig({ outDir });
   const uiRoot = path.join(resolveRepoRoot(), "ui");
-  const sharedConfig: InlineConfig = {
+  return {
     ...config,
     base: "/",
     configFile: false,
@@ -468,7 +466,60 @@ export async function startBundledControlUiE2eServer(outDir: string): Promise<Co
     logLevel: "error" as const,
     root: uiRoot,
   };
-  await build(sharedConfig);
+}
+
+export async function buildProductionControlUiE2e(outDir: string, buildId: string): Promise<void> {
+  // Keep the production config outside Vitest, but write directly to the
+  // caller-owned output so concurrent E2E builds cannot replace its worker.
+  const repoRoot = resolveRepoRoot();
+  const uiRoot = path.join(repoRoot, "ui");
+  const env: NodeJS.ProcessEnv = {
+    ...process.env,
+    NODE_ENV: "production",
+    OPENCLAW_CONTROL_UI_BUILD_ID: buildId,
+  };
+  for (const key of Object.keys(env)) {
+    if (key.startsWith("VITEST")) {
+      delete env[key];
+    }
+  }
+  const result = spawnSync(
+    process.execPath,
+    ["--import", "tsx", fileURLToPath(import.meta.url), "--production-build", outDir],
+    {
+      cwd: uiRoot,
+      encoding: "utf8",
+      env,
+      maxBuffer: 10 * 1024 * 1024,
+    },
+  );
+  if (result.status !== 0) {
+    throw new Error(
+      `Production Control UI build failed (exit ${result.status ?? "unknown"}):\n${result.stderr || result.stdout}`,
+    );
+  }
+}
+
+async function runProductionControlUiBuild(outDir: string): Promise<void> {
+  const [{ build }, { default: controlUiViteConfig }] = await Promise.all([
+    import("vite"),
+    import("../../vite.config.ts"),
+  ]);
+  await build({
+    ...controlUiViteConfig({ outDir }),
+    configFile: false,
+    logLevel: "error",
+    root: path.join(resolveRepoRoot(), "ui"),
+  });
+}
+
+async function startBuiltControlUiE2eServer(outDir: string): Promise<ControlUiE2eServer> {
+  const [{ preview }, { default: controlUiViteConfig }] = await Promise.all([
+    import("vite"),
+    import("../../vite.config.ts"),
+  ]);
+  const port = await resolveAvailableLoopbackPort();
+  const sharedConfig = createBundledControlUiE2eConfig(controlUiViteConfig, outDir);
   const server = await preview({
     ...sharedConfig,
     plugins: [...(sharedConfig.plugins ?? []), controlUiE2ePreviewConfigPlugin()],
@@ -489,6 +540,23 @@ export async function startBundledControlUiE2eServer(outDir: string): Promise<Co
   }
 }
 
+export async function startBundledControlUiE2eServer(outDir: string): Promise<ControlUiE2eServer> {
+  const [{ build }, { default: controlUiViteConfig }] = await Promise.all([
+    import("vite"),
+    import("../../vite.config.ts"),
+  ]);
+  await build(createBundledControlUiE2eConfig(controlUiViteConfig, outDir));
+  return startBuiltControlUiE2eServer(outDir);
+}
+
+export async function startProductionControlUiE2eServer(
+  outDir: string,
+  buildId: string,
+): Promise<ControlUiE2eServer> {
+  await buildProductionControlUiE2e(outDir, buildId);
+  return startBuiltControlUiE2eServer(outDir);
+}
+
 async function resolveAvailableLoopbackPort(): Promise<number> {
   return new Promise((resolve, reject) => {
     const probe = createNetServer();
@@ -2053,4 +2121,12 @@ function createMockGatewayControls(page: Page, defaultSessionKey: string): MockG
     },
   };
 }
+
+if (process.argv[1] && path.resolve(process.argv[1]) === fileURLToPath(import.meta.url)) {
+  const [command, outDir] = process.argv.slice(2);
+  if (command !== "--production-build" || !outDir) {
+    throw new Error("Usage: control-ui-e2e.ts --production-build <out-dir>");
+  }
+  await runProductionControlUiBuild(outDir);
+}
 /* oxlint-disable max-lines -- TODO: split this grandfathered oversized file. */