diff --git a/e2e/README.md b/e2e/README.md
index fa2e35d96..4cf2a7ef8 100644
--- a/e2e/README.md
+++ b/e2e/README.md
@@ -12,10 +12,12 @@ The Playwright config (`../playwright.config.ts`) builds the app (`next build`)
 
 ## Layout
 
-- **`setup/`** — `global-setup.ts` (auth + DB seeding), `test-helpers.ts` (shared login + navigation helpers).
+- **`setup/`** — `test.ts` (the suite's `test` + `expect` entry point), `global-setup.ts` (auth + DB seeding), `test-helpers.ts` (shared login + navigation helpers).
 - **`utils/`** — fixtures such as `mock-dashboard-snapshot.ts`.
 - **`*.spec.ts`** — one spec per flow: auth/login/redirect, dashboard, charts, the medication-wizard cadences (`medications-wizard-*`), insights generation + scroll restoration, doctor report, settings, mobile-viewport consistency, locale switch, accessibility (`a11y.spec.ts`), and the `v1427-*` regression set.
 
-## Convention
+## Conventions
+
+Import `test` and `expect` from `./setup/test`, never from `@playwright/test` — types (`Page`, `Route`, …) still come from the package. The entry point extends Playwright's `test` with an automatic fixture that drops route handlers and page listeners after every test, so a handler left in flight cannot fail the test it belonged to once the context closes. `src/__tests__/e2e-route-cleanup-guard.test.ts` enforces the import boundary.
 
 Assert against stable `data-*` attributes (`data-slot`, `data-display-step`, root display attrs), not viewport-dependent visible text. Responsive `sm:hidden` UI changes break `getByText` on desktop while the underlying element is still present — anchoring on data attributes keeps the specs stable across breakpoints. See [`../CLAUDE.md`](../CLAUDE.md).
diff --git a/e2e/a11y.spec.ts b/e2e/a11y.spec.ts
index 1fc1382d3..bcce6030e 100644
--- a/e2e/a11y.spec.ts
+++ b/e2e/a11y.spec.ts
@@ -1,11 +1,6 @@
 import AxeBuilder from "@axe-core/playwright";
-import {
-  expect,
-  test,
-  type Locator,
-  type Page,
-  type Route,
-} from "@playwright/test";
+import type { Locator, Page, Route } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import { POPULATED_SUMMARIES } from "./utils/mock-dashboard-snapshot";
diff --git a/e2e/achievements.spec.ts b/e2e/achievements.spec.ts
index 9786df03c..9dacf0042 100644
--- a/e2e/achievements.spec.ts
+++ b/e2e/achievements.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/admin-api-tokens-mobile.spec.ts b/e2e/admin-api-tokens-mobile.spec.ts
index 08bef6dd2..3f82cdb2d 100644
--- a/e2e/admin-api-tokens-mobile.spec.ts
+++ b/e2e/admin-api-tokens-mobile.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/ai-provider-dropdown.spec.ts b/e2e/ai-provider-dropdown.spec.ts
index f12dd9b05..ea2c00bb2 100644
--- a/e2e/ai-provider-dropdown.spec.ts
+++ b/e2e/ai-provider-dropdown.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/auth-redirect.spec.ts b/e2e/auth-redirect.spec.ts
index 931cb32d9..196373969 100644
--- a/e2e/auth-redirect.spec.ts
+++ b/e2e/auth-redirect.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 /**
  * The proxy at src/proxy.ts is the single gate enforcing auth on every
diff --git a/e2e/central-codex.spec.ts b/e2e/central-codex.spec.ts
index dec89459b..8d2e8a4ee 100644
--- a/e2e/central-codex.spec.ts
+++ b/e2e/central-codex.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/chart-overlay-controls.spec.ts b/e2e/chart-overlay-controls.spec.ts
index 2c4d5f8ef..84d7f2cc8 100644
--- a/e2e/chart-overlay-controls.spec.ts
+++ b/e2e/chart-overlay-controls.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/charts-mobile.spec.ts b/e2e/charts-mobile.spec.ts
index a5e86cf17..3e933b4d4 100644
--- a/e2e/charts-mobile.spec.ts
+++ b/e2e/charts-mobile.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import { mockDashboardSnapshot } from "./utils/mock-dashboard-snapshot";
diff --git a/e2e/coach-conversation-rename.spec.ts b/e2e/coach-conversation-rename.spec.ts
index 97551287e..1a8677e9f 100644
--- a/e2e/coach-conversation-rename.spec.ts
+++ b/e2e/coach-conversation-rename.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 import { setTimeout as delay } from "node:timers/promises";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
diff --git a/e2e/coach-guided-questions.spec.ts b/e2e/coach-guided-questions.spec.ts
index 2b3599965..638d9c74e 100644
--- a/e2e/coach-guided-questions.spec.ts
+++ b/e2e/coach-guided-questions.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/codex-flow.spec.ts b/e2e/codex-flow.spec.ts
index 5e929066e..ce5883886 100644
--- a/e2e/codex-flow.spec.ts
+++ b/e2e/codex-flow.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/cycle-insights-mobile.spec.ts b/e2e/cycle-insights-mobile.spec.ts
index a247bbddd..d45dfbbf2 100644
--- a/e2e/cycle-insights-mobile.spec.ts
+++ b/e2e/cycle-insights-mobile.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
@@ -175,14 +175,6 @@ test.describe("cycle + insights mobile smoke", () => {
     );
   });
 
-  // These handlers call route.fetch(), which needs a live page. Teardown can
-  // close the context while one is still in flight, and the rejected fetch
-  // then fails a test that had already passed. Drop the handlers first so
-  // nothing is left racing the close.
-  test.afterEach(async ({ page }) => {
-    await page.unrouteAll({ behavior: "ignoreErrors" });
-  });
-
   test("/insights has no horizontal scroll on Pixel-5", async ({ page }) => {
     await page.goto("/insights", { waitUntil: "domcontentloaded" });
     await page.waitForLoadState("networkidle");
diff --git a/e2e/dashboard.spec.ts b/e2e/dashboard.spec.ts
index 017051510..ff07c9902 100644
--- a/e2e/dashboard.spec.ts
+++ b/e2e/dashboard.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import { mockDashboardSnapshot } from "./utils/mock-dashboard-snapshot";
diff --git a/e2e/documents-ai.spec.ts b/e2e/documents-ai.spec.ts
index f0f8abbbc..2e75854b0 100644
--- a/e2e/documents-ai.spec.ts
+++ b/e2e/documents-ai.spec.ts
@@ -16,7 +16,8 @@
  * seeds a real `document_content_index` row (`ensureVaultAiFixture`) and drives
  * the real list union.
  */
-import { expect, test, type Page } from "@playwright/test";
+import type { Page } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/documents-auto-read.spec.ts b/e2e/documents-auto-read.spec.ts
index 5583b7320..d341fbed6 100644
--- a/e2e/documents-auto-read.spec.ts
+++ b/e2e/documents-auto-read.spec.ts
@@ -15,7 +15,8 @@
  * AI e2e, so it is pinned here too. Assertions target stable data-slots, never
  * viewport-dependent text.
  */
-import { expect, test, type Page } from "@playwright/test";
+import type { Page } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/documents-chat.spec.ts b/e2e/documents-chat.spec.ts
index e57fc0b78..85afe9b79 100644
--- a/e2e/documents-chat.spec.ts
+++ b/e2e/documents-chat.spec.ts
@@ -22,7 +22,8 @@
  * the specs time out. The seeded demo user has no AI provider, so the
  * no-provider state is the default.
  */
-import { expect, test, type Page } from "@playwright/test";
+import type { Page } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/documents.spec.ts b/e2e/documents.spec.ts
index 470a67405..0232fd2fc 100644
--- a/e2e/documents.spec.ts
+++ b/e2e/documents.spec.ts
@@ -17,7 +17,8 @@
  * they create, never on the shared doctor-flow corpus.
  */
 import AxeBuilder from "@axe-core/playwright";
-import { expect, test, type Page } from "@playwright/test";
+import type { Page } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/insights-generate.spec.ts b/e2e/insights-generate.spec.ts
index 19deb147c..1bce560a7 100644
--- a/e2e/insights-generate.spec.ts
+++ b/e2e/insights-generate.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/insights-scroll-restoration.spec.ts b/e2e/insights-scroll-restoration.spec.ts
index b5be7995a..8dd6e160f 100644
--- a/e2e/insights-scroll-restoration.spec.ts
+++ b/e2e/insights-scroll-restoration.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/ipad-viewport.spec.ts b/e2e/ipad-viewport.spec.ts
index dde8b9369..8667d8c27 100644
--- a/e2e/ipad-viewport.spec.ts
+++ b/e2e/ipad-viewport.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/locale-switch.spec.ts b/e2e/locale-switch.spec.ts
index fc231d80d..e66191744 100644
--- a/e2e/locale-switch.spec.ts
+++ b/e2e/locale-switch.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 /**
  * Locale-key drift smoke check — switch the cookie between EN and DE
diff --git a/e2e/login.spec.ts b/e2e/login.spec.ts
index 23a29bf63..4a0b4ea49 100644
--- a/e2e/login.spec.ts
+++ b/e2e/login.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 /**
  * Smoke checks on the login surface — must render, must wire the
diff --git a/e2e/measurement-flow.spec.ts b/e2e/measurement-flow.spec.ts
index 904095a1f..8457cf0e1 100644
--- a/e2e/measurement-flow.spec.ts
+++ b/e2e/measurement-flow.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/medications-wizard-biweekly.spec.ts b/e2e/medications-wizard-biweekly.spec.ts
index 68cc6b024..d687051fa 100644
--- a/e2e/medications-wizard-biweekly.spec.ts
+++ b/e2e/medications-wizard-biweekly.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import {
   STUB_MEDICATION_ID,
diff --git a/e2e/medications-wizard-compose.spec.ts b/e2e/medications-wizard-compose.spec.ts
index ddba23f37..d31b51f14 100644
--- a/e2e/medications-wizard-compose.spec.ts
+++ b/e2e/medications-wizard-compose.spec.ts
@@ -1,4 +1,5 @@
-import { expect, test, type Route } from "@playwright/test";
+import type { Route } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import {
   STUB_MEDICATION_ID,
diff --git a/e2e/medications-wizard-daily.spec.ts b/e2e/medications-wizard-daily.spec.ts
index e6d773dd4..fb6b1dd7d 100644
--- a/e2e/medications-wizard-daily.spec.ts
+++ b/e2e/medications-wizard-daily.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import {
   STUB_MEDICATION_ID,
diff --git a/e2e/medications-wizard-monthly.spec.ts b/e2e/medications-wizard-monthly.spec.ts
index 7e7a21373..885500859 100644
--- a/e2e/medications-wizard-monthly.spec.ts
+++ b/e2e/medications-wizard-monthly.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import {
   STUB_MEDICATION_ID,
diff --git a/e2e/medications-wizard-oneshot.spec.ts b/e2e/medications-wizard-oneshot.spec.ts
index d851f9a4a..abe36b10a 100644
--- a/e2e/medications-wizard-oneshot.spec.ts
+++ b/e2e/medications-wizard-oneshot.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import {
   STUB_MEDICATION_ID,
diff --git a/e2e/medications-wizard-rolling.spec.ts b/e2e/medications-wizard-rolling.spec.ts
index 02ecafc8e..c2ecef158 100644
--- a/e2e/medications-wizard-rolling.spec.ts
+++ b/e2e/medications-wizard-rolling.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import {
   STUB_MEDICATION_ID,
diff --git a/e2e/medications-wizard-weekdays.spec.ts b/e2e/medications-wizard-weekdays.spec.ts
index 5386c6666..5ea977aaa 100644
--- a/e2e/medications-wizard-weekdays.spec.ts
+++ b/e2e/medications-wizard-weekdays.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import {
   STUB_MEDICATION_ID,
diff --git a/e2e/mobile-density.spec.ts b/e2e/mobile-density.spec.ts
index af0251581..ebe54672a 100644
--- a/e2e/mobile-density.spec.ts
+++ b/e2e/mobile-density.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/mobile-viewport.spec.ts b/e2e/mobile-viewport.spec.ts
index af1e46888..200bf4c28 100644
--- a/e2e/mobile-viewport.spec.ts
+++ b/e2e/mobile-viewport.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/mood-card-mobile.spec.ts b/e2e/mood-card-mobile.spec.ts
index 9b74d77d1..e3ffa57fd 100644
--- a/e2e/mood-card-mobile.spec.ts
+++ b/e2e/mood-card-mobile.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/mood-timestamp.spec.ts b/e2e/mood-timestamp.spec.ts
index 3aeca210c..28daa3df8 100644
--- a/e2e/mood-timestamp.spec.ts
+++ b/e2e/mood-timestamp.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/onboarding-flicker.spec.ts b/e2e/onboarding-flicker.spec.ts
index d69f78d61..bd0ee08ac 100644
--- a/e2e/onboarding-flicker.spec.ts
+++ b/e2e/onboarding-flicker.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/onboarding-tour-passthrough.spec.ts b/e2e/onboarding-tour-passthrough.spec.ts
index 558967f53..003bd5e01 100644
--- a/e2e/onboarding-tour-passthrough.spec.ts
+++ b/e2e/onboarding-tour-passthrough.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/refetch-nav.spec.ts b/e2e/refetch-nav.spec.ts
index ce2f52e84..fb0f16934 100644
--- a/e2e/refetch-nav.spec.ts
+++ b/e2e/refetch-nav.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/settings-export.spec.ts b/e2e/settings-export.spec.ts
index b116e6a16..e2de1e22b 100644
--- a/e2e/settings-export.spec.ts
+++ b/e2e/settings-export.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/settings-integrations-mobile.spec.ts b/e2e/settings-integrations-mobile.spec.ts
index 55ab67f28..92397f634 100644
--- a/e2e/settings-integrations-mobile.spec.ts
+++ b/e2e/settings-integrations-mobile.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/settings-mobile-consistency.spec.ts b/e2e/settings-mobile-consistency.spec.ts
index a75a456d0..4ba303cf1 100644
--- a/e2e/settings-mobile-consistency.spec.ts
+++ b/e2e/settings-mobile-consistency.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/settings-overscroll.spec.ts b/e2e/settings-overscroll.spec.ts
index 544ecfb7b..b55eb33cc 100644
--- a/e2e/settings-overscroll.spec.ts
+++ b/e2e/settings-overscroll.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/setup/test.ts b/e2e/setup/test.ts
new file mode 100644
index 000000000..8893f5aa5
--- /dev/null
+++ b/e2e/setup/test.ts
@@ -0,0 +1,90 @@
+/**
+ * The E2E suite's `test` / `expect` entry point.
+ *
+ * Every spec imports from here instead of from `@playwright/test`, and the
+ * structural guard `src/__tests__/e2e-route-cleanup-guard.test.ts` keeps it
+ * that way.
+ *
+ * ## Why
+ *
+ * A spec that registers `page.route(...)` in a `beforeEach` leaves the handler
+ * armed until the context closes. If the handler is async — `route.fetch()`,
+ * an `await` before `route.fulfill()` — teardown can close the context while
+ * one invocation is still in flight. The callback then rejects against a dead
+ * target, Playwright attributes the rejection to the test that just finished,
+ * and a test that had already passed is reported as failed. With `retries: 2`
+ * plus `failOnFlakyTests` on CI, that is a release blocker whose trigger is
+ * timing, not code.
+ *
+ * The remedy Playwright names is `unrouteAll({ behavior: "ignoreErrors" })`
+ * before the test ends. Written per spec that is 36 copies of the same three
+ * lines and one forgotten copy away from the same failure. Written as an auto
+ * fixture it happens for every test in the suite, including specs nobody has
+ * written yet, and a spec author never has to know it exists.
+ *
+ * ## What it covers
+ *
+ * - `page.route(...)` on every page in the test's context.
+ * - `context.route(...)` on the context itself.
+ * - Page event listeners for the interactive event types a spec subscribes to.
+ *   A listener that awaits something (a `dialog` handler, a `response` handler
+ *   that reads a body) can reject after teardown for exactly the same reason a
+ *   route handler can.
+ *
+ * ## What it does not cover
+ *
+ * A page that lives in a context the spec created itself — `browser.newContext()`
+ * inside a helper — is invisible here, because this fixture can only see the
+ * context Playwright built for the test. `share-documents.spec.ts` is the one
+ * spec that does this; it owns those contexts and has to clean them up itself.
+ */
+import { test as base, expect } from "@playwright/test";
+
+/**
+ * Page event types cleared at teardown. Deliberately not the lifecycle events
+ * (`close`, `crash`, `frameattached`, …): those describe the teardown we are
+ * standing in, and nothing in the suite hangs work off them. These are the
+ * types a spec attaches a handler to, and the ones whose handler can still be
+ * running when the context goes away.
+ */
+const OBSERVED_PAGE_EVENTS = [
+  "console",
+  "dialog",
+  "download",
+  "filechooser",
+  "pageerror",
+  "popup",
+  "request",
+  "requestfailed",
+  "requestfinished",
+  "response",
+  "websocket",
+  "worker",
+] as const;
+
+export const test = base.extend<{ routeCleanup: void }>({
+  routeCleanup: [
+    async ({ context }, use) => {
+      await use();
+
+      // Best-effort: a spec is free to close its own context (or the browser
+      // can die under it), and a teardown helper must never be the thing that
+      // turns a green run red. Everything below is a cleanup, so a failure to
+      // clean up has nothing left to protect.
+      try {
+        for (const page of context.pages()) {
+          await page.unrouteAll({ behavior: "ignoreErrors" });
+          for (const event of OBSERVED_PAGE_EVENTS) {
+            await page.removeAllListeners(event, { behavior: "ignoreErrors" });
+          }
+        }
+        await context.unrouteAll({ behavior: "ignoreErrors" });
+      } catch {
+        // Target already gone — nothing left to unroute.
+      }
+    },
+    { auto: true },
+  ],
+});
+
+export { expect };
diff --git a/e2e/share-documents.spec.ts b/e2e/share-documents.spec.ts
index d33cfe1de..28d00a7d6 100644
--- a/e2e/share-documents.spec.ts
+++ b/e2e/share-documents.spec.ts
@@ -24,7 +24,8 @@
  * broader corpus (`ensureVaultFixture`) supplies the ≥50 documents the picker
  * cap test and the not-attached foreign-id probe need.
  */
-import { expect, test, type Browser, type Page } from "@playwright/test";
+import type { Browser, Page } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/sidebar-admin-no-expand.spec.ts b/e2e/sidebar-admin-no-expand.spec.ts
index 97051932c..2c914934e 100644
--- a/e2e/sidebar-admin-no-expand.spec.ts
+++ b/e2e/sidebar-admin-no-expand.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/timezone-profile.spec.ts b/e2e/timezone-profile.spec.ts
index 50dd311d4..f4865aa1d 100644
--- a/e2e/timezone-profile.spec.ts
+++ b/e2e/timezone-profile.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/today-just-in.spec.ts b/e2e/today-just-in.spec.ts
index 843783ce5..c4f0c61ca 100644
--- a/e2e/today-just-in.spec.ts
+++ b/e2e/today-just-in.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 import pg from "pg";
 
 import { E2E_USER, STORAGE_STATE_PATH } from "./setup/global-setup";
diff --git a/e2e/v1427-admin-login-overview.spec.ts b/e2e/v1427-admin-login-overview.spec.ts
index 8dcaad9bf..0446eacd0 100644
--- a/e2e/v1427-admin-login-overview.spec.ts
+++ b/e2e/v1427-admin-login-overview.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/v1427-coach-launch.spec.ts b/e2e/v1427-coach-launch.spec.ts
index 90e0a3765..9c976824c 100644
--- a/e2e/v1427-coach-launch.spec.ts
+++ b/e2e/v1427-coach-launch.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/v1427-insights-empty-state.spec.ts b/e2e/v1427-insights-empty-state.spec.ts
index 64c306a3e..62bbcff16 100644
--- a/e2e/v1427-insights-empty-state.spec.ts
+++ b/e2e/v1427-insights-empty-state.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/v1427-measurements-add-param.spec.ts b/e2e/v1427-measurements-add-param.spec.ts
index daf5096b3..e922945a6 100644
--- a/e2e/v1427-measurements-add-param.spec.ts
+++ b/e2e/v1427-measurements-add-param.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/v1427-public-pages.spec.ts b/e2e/v1427-public-pages.spec.ts
index 356f635f5..74eeac6db 100644
--- a/e2e/v1427-public-pages.spec.ts
+++ b/e2e/v1427-public-pages.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 /**
  * v1.4.27 MB6 — public surfaces.
diff --git a/e2e/v1427-responsive-sheet.spec.ts b/e2e/v1427-responsive-sheet.spec.ts
index 1e7a35b86..762df1d6f 100644
--- a/e2e/v1427-responsive-sheet.spec.ts
+++ b/e2e/v1427-responsive-sheet.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/e2e/version.spec.ts b/e2e/version.spec.ts
index 9dc11eddc..98e5d5963 100644
--- a/e2e/version.spec.ts
+++ b/e2e/version.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 /**
  * /api/version is the public, unauthenticated endpoint that drives
diff --git a/e2e/water-capture.spec.ts b/e2e/water-capture.spec.ts
index d45761495..7c9e99bf4 100644
--- a/e2e/water-capture.spec.ts
+++ b/e2e/water-capture.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 import {
diff --git a/e2e/workouts-infinite-history.spec.ts b/e2e/workouts-infinite-history.spec.ts
index c4417320c..2fa882484 100644
--- a/e2e/workouts-infinite-history.spec.ts
+++ b/e2e/workouts-infinite-history.spec.ts
@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test";
+import { expect, test } from "./setup/test";
 
 import { STORAGE_STATE_PATH } from "./setup/global-setup";
 
diff --git a/src/__tests__/e2e-route-cleanup-guard.test.ts b/src/__tests__/e2e-route-cleanup-guard.test.ts
new file mode 100644
index 000000000..0e7613914
--- /dev/null
+++ b/src/__tests__/e2e-route-cleanup-guard.test.ts
@@ -0,0 +1,156 @@
+/**
+ * Structural guard on the E2E suite's route-cleanup boundary.
+ *
+ * A spec that arms `page.route(...)` in a `beforeEach` and never drops the
+ * handler races its own teardown: the context closes, an in-flight handler
+ * rejects, and Playwright reports a test that had already passed as failed.
+ * `e2e/setup/test.ts` removes the possibility with an auto fixture, but only
+ * for specs that take their `test` from there — a spec that imports straight
+ * from `@playwright/test` silently opts out and looks identical in review.
+ *
+ * So the entry point is the invariant, and this file is what keeps it true.
+ * It is a tripwire, not a proof: it shows nobody has changed the import
+ * boundary without editing this file. That the fixture actually cleans up is
+ * a runtime property, proven by the suite itself.
+ */
+import { describe, it, expect } from "vitest";
+import { readFileSync, globSync } from "node:fs";
+import { join, sep } from "node:path";
+
+const E2E = join(process.cwd(), "e2e");
+
+/** The shared entry point, relative to `e2e/`. */
+const ENTRY = "setup/test.ts";
+
+/**
+ * Files allowed to import `test` from `@playwright/test` directly, each with
+ * the reason it has to.
+ */
+const DIRECT_IMPORT_ALLOWLIST: Record<string, string> = {
+  // The entry point itself — it extends Playwright's base `test`, which it
+  // cannot do without importing it.
+  [ENTRY]: "defines the extended `test` every other file imports",
+};
+
+function e2eFiles(): string[] {
+  return globSync("**/*.ts", { cwd: E2E })
+    .map((p) => p.split(sep).join("/"))
+    .sort();
+}
+
+function read(rel: string): string {
+  return readFileSync(join(E2E, rel), "utf8");
+}
+
+/**
+ * The file with its comments removed. The entry point documents the very API
+ * calls it makes, so a naive substring match would be satisfied by the prose
+ * alone — a fixture gutted to a no-op would still read as compliant.
+ */
+function stripComments(src: string): string {
+  return src.replace(/\/\*[\s\S]*?\*\//g, "").replace(/^\s*\/\/.*$/gm, "");
+}
+
+/**
+ * Every `from "<module>"` import statement in a file, as
+ * `{ module, specifiers }` — `specifiers` is the raw brace body, or `"*"` for
+ * a namespace import.
+ */
+function imports(src: string): Array<{ module: string; specifiers: string }> {
+  const found: Array<{ module: string; specifiers: string }> = [];
+  for (const m of src.matchAll(
+    /import\s+(type\s+)?\{([\s\S]*?)\}\s*from\s*"([^"]+)"/g,
+  )) {
+    // `import type { … }` imports no runtime binding at all.
+    found.push({ module: m[3], specifiers: m[1] ? "" : m[2] });
+  }
+  for (const m of src.matchAll(/import\s+\*\s+as\s+\w+\s+from\s*"([^"]+)"/g)) {
+    found.push({ module: m[1], specifiers: "*" });
+  }
+  return found;
+}
+
+/** Does this file import the runtime `test` binding from `module`? */
+function importsTestFrom(src: string, module: string): boolean {
+  return imports(src)
+    .filter((i) => i.module === module)
+    .some(
+      (i) =>
+        i.specifiers === "*" ||
+        i.specifiers
+          .split(",")
+          .map((s) => s.trim())
+          .filter((s) => s && !s.startsWith("type "))
+          .some((s) => /^test(\s+as\s+\w+)?$/.test(s)),
+    );
+}
+
+describe("the E2E suite takes `test` from the shared entry point", () => {
+  it("no file outside the allowlist imports `test` from @playwright/test", () => {
+    const offenders = e2eFiles().filter(
+      (rel) =>
+        !(rel in DIRECT_IMPORT_ALLOWLIST) &&
+        importsTestFrom(read(rel), "@playwright/test"),
+    );
+
+    expect(offenders).toEqual([]);
+  });
+
+  it("the allowlist names only files that exist and still need the exemption", () => {
+    for (const rel of Object.keys(DIRECT_IMPORT_ALLOWLIST)) {
+      expect(
+        importsTestFrom(read(rel), "@playwright/test"),
+        `${rel} is allowlisted but no longer imports \`test\` directly — drop the entry`,
+      ).toBe(true);
+    }
+  });
+
+  it("every spec imports `test` from the entry point", () => {
+    const specs = e2eFiles().filter((rel) => rel.endsWith(".spec.ts"));
+    // Sanity: the sweep found the suite, not an empty directory.
+    expect(specs.length).toBeGreaterThan(40);
+
+    const missing = specs.filter((rel) => {
+      const src = read(rel);
+      // Specs sit at `e2e/<name>.spec.ts`, so the entry resolves as
+      // `./setup/test`. A nested spec would need a different prefix; none
+      // exists, and this assertion is what would surface one.
+      return !importsTestFrom(src, "./setup/test");
+    });
+
+    expect(missing).toEqual([]);
+  });
+});
+
+describe("the entry point still cleans up", () => {
+  const src = stripComments(read(ENTRY));
+
+  it("registers the cleanup as an automatic fixture", () => {
+    // `auto: true` is the whole point: a spec author cannot forget it and does
+    // not have to declare it. Without the flag the fixture is dead code.
+    expect(src).toMatch(/\{\s*auto:\s*true\s*\}/);
+  });
+
+  it("drops route handlers on both the page and the context", () => {
+    expect(src).toMatch(/page\.unrouteAll\(\{\s*behavior:\s*"ignoreErrors"/);
+    expect(src).toMatch(/context\.unrouteAll\(\{\s*behavior:\s*"ignoreErrors"/);
+  });
+
+  it("drops page event listeners", () => {
+    expect(src).toMatch(/removeAllListeners\(/);
+  });
+
+  it("cleans up after the test body, not before it", () => {
+    // `await use()` first, cleanup after — a fixture that cleaned up before
+    // the test would unroute the handlers a `beforeEach` had just armed.
+    const useAt = src.indexOf("await use()");
+    const unrouteAt = src.indexOf("unrouteAll(");
+    expect(useAt).toBeGreaterThan(-1);
+    expect(unrouteAt).toBeGreaterThan(useAt);
+  });
+
+  it("exports both `test` and `expect`, so a spec needs one import", () => {
+    expect(src).toMatch(/export const test\b/);
+    expect(src).toMatch(/export \{ expect \}/);
+  });
+});