feat: add enable/disable toggle for chore scheduling in ScheduleModal

- Introduced a toggle button to enable or disable chores in the scheduler.
- The toggle will be available in both types of schedulers.
- Added UI design proposal and considerations for mobile dimensions.
- Included E2E tests to ensure toggle state persistence and correct behavior in child view.

frontend/vue-app/e2e/auth-cc.setup.ts

@@ -0,0 +1,42 @@
+import { test as setup } from '@playwright/test'
+import { STORAGE_STATE_CC, E2E_CC_EMAIL, E2E_CC_PASSWORD, E2E_CC_PIN } from './e2e-constants'
+
+const BACKEND = 'http://localhost:5000'
+
+setup('authenticate create-child isolated user', async ({ page }) => {
+  // Create the isolated create-child test user (separate from the main E2E user).
+  // This user starts with no children so deleteAllChildren() in the empty-state test
+  // never interferes with concurrent tests running under the main E2E user.
+  const createRes = await page.request.post(`${BACKEND}/auth/e2e-create-cc-user`)
+  if (!createRes.ok()) {
+    throw new Error(`e2e-create-cc-user failed: ${createRes.status()} ${await createRes.text()}`)
+  }
+
+  await page.goto('/auth/login')
+  await page.getByLabel('Email address').fill(E2E_CC_EMAIL)
+  await page.getByLabel('Password').fill(E2E_CC_PASSWORD)
+  await page.getByRole('button', { name: 'Sign in' }).click()
+
+  await page.waitForURL(/\/(parent|child)/)
+
+  await page.getByRole('button', { name: 'Parent login' }).click()
+
+  const pinInput = page.getByPlaceholder('4–6 digits')
+  await pinInput.waitFor({ timeout: 5000 })
+  await pinInput.fill(E2E_CC_PIN)
+  await page.getByLabel('Stay in parent mode on this device').check()
+  await page.getByRole('button', { name: 'OK' }).click()
+
+  await page.waitForURL(/\/parent(\/|$)/)
+
+  try {
+    await page.getByRole('button', { name: 'Add Child' }).waitFor({ timeout: 5000 })
+  } catch (e) {
+    await page.screenshot({ path: 'auth-setup-cc-parent-fail.png' })
+    throw new Error(
+      'CC user parent mode not reached after PIN entry. See auth-setup-cc-parent-fail.png for details.',
+    )
+  }
+
+  await page.context().storageState({ path: STORAGE_STATE_CC })
+})