diff --git a/eslint.config.mjs b/eslint.config.mjs
index d97eff4b..280d6b12 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -43,6 +43,22 @@ const noHardcodedConsentId = {
     'Never hardcode a Consent document id — resolve it by stable key via requireConsentByKey (keys in src/lib/campaignConsentKeys.ts).',
 }
 
+// E2E fixtures must derive dates from "today": a hardcoded ISO instant
+// silently expires once it stops matching a time-windowed default view. The
+// B196 activities fixture (`startAt: '2026-09-01...'`) emptied the default
+// `proximos` tab and blocked the 2026-09-11 deploy verify. Derive with
+// `civilDatePlusDays(formatBahiaCivilDate(new Date()), days)` +
+// `parseBahiaDateTimeInput` (tests/e2e/helpers/agendaPeriodLabels.ts,
+// src/lib/campaignTime.ts). Deliberately narrow (start*/end*/date* keys):
+// state timestamps like `disabledAt`/`lastSyncedAt` are the scenario under
+// test, not a time window.
+const noHardcodedE2eFixtureDate = {
+  selector:
+    "Property[key.name=/^(start|end|date)/][value.type='Literal'][value.raw=/20[0-9]{2}-[0-9]{2}-[0-9]{2}T/]",
+  message:
+    'Never hardcode a fixture date in e2e specs — derive it from today (civilDatePlusDays + parseBahiaDateTimeInput); a literal expires and empties time-windowed lists (B196 deploy verify, 2026-09-11).',
+}
+
 const eslintConfig = [
   ...compat.extends('next/core-web-vitals', 'next/typescript'),
   {
@@ -212,6 +228,15 @@ const eslintConfig = [
       '@typescript-eslint/no-unused-vars': ['warn', { args: 'none' }],
     },
   },
+  {
+    // E2E fixture dates must derive from "today" (B196 deploy verify,
+    // 2026-09-11): a hardcoded ISO instant expires and empties the
+    // time-windowed default view. Keeps the global as-never ban too.
+    files: ['tests/e2e/**/*.{ts,tsx}'],
+    rules: {
+      'no-restricted-syntax': ['error', noAsNeverCast, noHardcodedE2eFixtureDate],
+    },
+  },
   prettier,
   // Override default ignores of eslint-config-next.
   globalIgnores([
diff --git a/tests/e2e/campaignMunicipalities.e2e.spec.ts b/tests/e2e/campaignMunicipalities.e2e.spec.ts
index 4abba4ad..f19284db 100644
--- a/tests/e2e/campaignMunicipalities.e2e.spec.ts
+++ b/tests/e2e/campaignMunicipalities.e2e.spec.ts
@@ -1,6 +1,7 @@
 import type { Page } from '@playwright/test'
 
 import { SUPPORTER_REGISTRATION_CONSENT_KEY } from '../../src/lib/campaignConsentKeys.js'
+import { formatBahiaCivilDate, parseBahiaDateTimeInput } from '../../src/lib/campaignTime.js'
 import { fallbackDemandTitle } from '../../src/lib/demandTitle.js'
 import { hookFilledCreateData } from '../../src/utilities/hookFilledData.js'
 import {
@@ -24,6 +25,7 @@ import {
   assertThreeColumnActionGrid,
   collectActionBoundingBoxes,
 } from './helpers/actionGridGeometry.js'
+import { civilDatePlusDays } from './helpers/agendaPeriodLabels.js'
 
 const showAllMunicipalityColumns = (page: Page, url: string) =>
   page.context().addCookies([
@@ -1496,6 +1498,14 @@ test.describe('Municípios — barra colada e card denso (B196)', () => {
       name: fixtures.value('Coordenadora B196 Ativ'),
     })
     const municipality = await fixtures.claimMunicipality()
+    // The default tab (`proximos`) only lists `confirmado` activities with
+    // `startAt >= now`, so the fixture start must be derived from "today" —
+    // a hardcoded date empties the list once it expires (deploy verify
+    // 2026-09-11: `scrollHeight - clientHeight` stuck at 0 on all retries).
+    const startAt = parseBahiaDateTimeInput(
+      `${civilDatePlusDays(formatBahiaCivilDate(new Date()), 7)}T13:00`,
+    )
+    if (!startAt) throw new Error('Falha ao montar horário da fixture de atividades.')
     // Enough rows to make the scrollport scrollable once the top bar takes over.
     for (let i = 0; i < 5; i++) {
       await fixtures.payload.create({
@@ -1503,7 +1513,7 @@ test.describe('Municípios — barra colada e card denso (B196)', () => {
         data: hookFilledCreateData<'activity'>({
           title: `Atividade B196 ${fixtures.value('x')}`,
           status: 'confirmado',
-          startAt: '2026-09-01T13:00:00.000Z',
+          startAt,
           municipality: municipality.id,
           responsible: [{ relationTo: 'campaignUser', value: coordinator.id }],
         }),
@@ -1524,10 +1534,14 @@ test.describe('Municípios — barra colada e card denso (B196)', () => {
     const headerBottomValue = await headerBottom(topBar)
     expect((await form.boundingBox())!.y).toBeGreaterThan(headerBottomValue)
 
-    // The scrollport must actually scroll for the sticky to engage.
+    // The scrollport must actually scroll for the sticky to engage. Same B196
+    // stream-latency class as the sibling polls: the list chunk can land late
+    // under 4-worker load, so use the 30s budget instead of the 10s default.
     const scrollport = contentScroll(page)
     await expect
-      .poll(() => scrollport.evaluate((el) => el.scrollHeight - el.clientHeight))
+      .poll(() => scrollport.evaluate((el) => el.scrollHeight - el.clientHeight), {
+        timeout: 30_000,
+      })
       .toBeGreaterThan(0)
     await scrollport.evaluate((el) => el.scrollTo(0, el.scrollHeight))
     await expect.poll(async () => (await form.boundingBox())!.y).toBe(headerBottomValue)
diff --git a/tests/unit/eslintConventions.unit.spec.ts b/tests/unit/eslintConventions.unit.spec.ts
index 8a0dd22b..fb779cd9 100644
--- a/tests/unit/eslintConventions.unit.spec.ts
+++ b/tests/unit/eslintConventions.unit.spec.ts
@@ -189,11 +189,30 @@ describe('ESLint conventions', () => {
   it('allows async function and type-only exports from use server modules', async () => {
     await expectValid(
       'src/app/(campaign)/campanha/actions/futureAction.ts',
-      `'use server'\n\nexport type Result = { ok: true }\nexport const save = async () => ({ ok: true as const })\nexport async function load() { return 1 }\n`,
+      `'use server'\nexport type Result = { ok: true }\nexport const save = async () => ({ ok: true as const })\nexport async function load() { return 1 }\n`,
     )
     await expectValid(
       'src/app/(campaign)/campanha/(app)/municipios/municipalityStaffEditMessages.ts',
       `export const municipalityStaffEditSafeMessages = ['x'] as const\n`,
     )
   })
+
+  it('bans hardcoded ISO fixture dates in e2e specs but not state timestamps', async () => {
+    await expectInvalid(
+      'tests/e2e/futureFixture.e2e.spec.ts',
+      `const fixture = { startAt: '2026-09-01T13:00:00.000Z' }`,
+      'no-restricted-syntax',
+    )
+    await expectInvalid(
+      'tests/e2e/futureFixture.e2e.spec.ts',
+      `const fixture = { endDate: '2026-09-01T13:00:00.000Z' }`,
+      'no-restricted-syntax',
+    )
+    // `disabledAt`/`lastSyncedAt` are the state under test, not a time window;
+    // a computed `startAt` is exactly the sanctioned derivation.
+    await expectValid(
+      'tests/e2e/futureFixture.e2e.spec.ts',
+      `const fixture = { disabledAt: '2026-08-11T00:00:00.000Z' }\nconst startAt = 'dynamic'\nconst activity = { startAt }`,
+    )
+  })
 })