Add end-to-end tests for parent item management

- Implement tests for creating, editing, and deleting chores, kindness acts, and penalties.
- Add tests to verify conversion of default items to user items and restoration of system defaults upon deletion.
- Ensure proper cancellation of creation and editing actions.
- Create a comprehensive plan document outlining the test scenarios and expected behaviors.

frontend/vue-app/e2e/mode_parent/tasks/penalty-convert-default.spec.ts

@@ -0,0 +1,24 @@
+// spec: frontend/vue-app/e2e/plans/parent-item-management.plan.md
+// seed: e2e/seed.spec.ts
+
+import { test, expect } from '@playwright/test'
+
+test('Convert a default penalty to a user item by editing', async ({ page }) => {
+  await page.goto('/parent/tasks/chores')
+  await page.click('text=Penalties')
+  // locate default penalty
+  await expect(page.locator('text=Fighting')).toBeVisible()
+  await expect(page.locator('text=Fighting >> .. >> button[aria-label="Delete item"]')).toHaveCount(
+    0,
+  )
+  // edit it (click the item itself)
+  await page.getByText('Fighting', { exact: true }).click()
+  await page.locator('#name').fill('Fighting (custom)')
+  await page.locator('#points').fill('15')
+  await expect(page.getByRole('button', { name: 'Save' })).toBeEnabled()
+  await page.getByRole('button', { name: 'Save' }).click()
+  // now should have delete option
+  await expect(
+    page.locator('text=Fighting >> .. >> button[aria-label="Delete item"]'),
+  ).toBeVisible()
+})