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/chore-convert-default.spec.ts

@@ -0,0 +1,43 @@
+// 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 chore to a user item by editing', async ({ page }) => {
+  // 1. Locate a default chore such as 'Clean your mess' in the chores list
+  await page.goto('/parent/tasks/chores')
+  await expect(page.locator('text=Clean your mess')).toBeVisible()
+  // expect: Item is visible and has no delete button
+  await expect(
+    page.locator('text=Clean your mess >> .. >> button[aria-label="Delete item"]'),
+  ).toHaveCount(0)
+
+  // 2. Click the default chore itself to edit
+  await page.click('text=Clean your mess')
+  // expect: Edit form opens with the default values
+  await expect(page.locator('input#name').inputValue()).resolves.toBe('Clean your mess')
+
+  // 3. Change some properties (name and points) so Save becomes enabled
+  await page.evaluate(() => {
+    const setVal = (sel, val) => {
+      const el = document.querySelector(sel)
+      if (el) {
+        el.value = val
+        el.dispatchEvent(new Event('input', { bubbles: true }))
+        el.dispatchEvent(new Event('change', { bubbles: true }))
+      }
+    }
+    setVal('#name', 'Clean your mess (custom)')
+    setVal('#points', '20')
+  })
+  // expect: Save button is enabled because form is dirty
+  await expect(page.getByRole('button', { name: 'Save' })).toBeEnabled()
+
+  // 4. Save the update
+  await page.click('button:has-text("Save")')
+  // expect: The chore now shows as editable and includes a delete option
+  await expect(
+    page.locator('text=Clean your mess >> .. >> button[aria-label="Delete item"]'),
+  ).toBeVisible()
+  // expect: Item behaves like a custom chore
+})