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/create-child/validation.spec.ts

@@ -0,0 +1,88 @@
+// spec: e2e/plans/create-child.plan.md
+
+import { test, expect } from '@playwright/test'
+
+test.describe('Create Child', () => {
+  test.beforeEach(async ({ page }, testInfo) => {
+    test.skip(testInfo.project.name === 'chromium-no-pin', 'Requires parent-authenticated mode')
+
+    // Navigate to app root - router redirects to /parent (children list) when parent-authenticated
+    await page.goto('/')
+    await page.getByRole('button', { name: 'Add Child' }).click()
+    await expect(page.getByRole('heading', { name: 'Create Child' })).toBeVisible()
+  })
+
+  test('Reject submission when Name is empty', async ({ page }) => {
+    // 2. Leave Name empty, enter '7' in Age - Create remains disabled
+    const createButton = page.getByRole('button', { name: 'Create' })
+    await page.getByLabel('Age').fill('7')
+
+    await expect(createButton).toBeDisabled()
+    await expect(page).toHaveURL('/parent/children/create')
+  })
+
+  test('Reject submission when Name is whitespace only', async ({ page }) => {
+    // 2. Enter only spaces in Name, enter '7' in Age - Create remains disabled
+    const createButton = page.getByRole('button', { name: 'Create' })
+    await page.getByLabel('Name').fill('   ')
+    await page.getByLabel('Age').fill('7')
+
+    await expect(createButton).toBeDisabled()
+    await expect(page).toHaveURL('/parent/children/create')
+  })
+
+  test('Reject submission when Age is empty', async ({ page }) => {
+    // 2. Enter 'Charlie', clear Age - Create button should be disabled
+    await page.getByLabel('Name').fill('Charlie')
+    await page.getByLabel('Age').clear()
+
+    await expect(page.getByRole('button', { name: 'Create' })).toBeDisabled()
+    await expect(page).toHaveURL('/parent/children/create')
+  })
+
+  test('Reject negative age', async ({ page }) => {
+    // 2. Enter 'Dave', enter '-1' - Create remains disabled
+    const createButton = page.getByRole('button', { name: 'Create' })
+    await page.getByLabel('Name').fill('Dave')
+    await page.getByLabel('Age').fill('-1')
+
+    await expect(createButton).toBeDisabled()
+    await expect(page).toHaveURL('/parent/children/create')
+  })
+
+  test('Enforce maximum Name length of 64 characters', async ({ page, request }) => {
+    const nameInput = page.getByLabel('Name')
+    const ageInput = page.getByLabel('Age')
+    const createButton = page.getByRole('button', { name: 'Create' })
+
+    // Use toPass() to handle SSE-triggered form resets from parallel tests
+    const FULL_NAME = 'A'.repeat(64)
+    await expect(async () => {
+      if (new URL(page.url()).pathname === '/parent') return
+      // Clean up any previously-created 64-A child in case prev attempt created but nav was cancelled
+      const lr = await request.get('/api/child/list')
+      for (const c of (await lr.json()).children ?? []) {
+        if (c.name === FULL_NAME) await request.delete(`/api/child/${c.id}`)
+      }
+      // Fill 65 chars — HTML maxlength=64 truncates to 64
+      await nameInput.fill('A'.repeat(65))
+      // Verify truncation via non-retrying read (throws if SSE cleared the field)
+      const truncated = await nameInput.inputValue()
+      if (truncated !== FULL_NAME)
+        throw new Error(`maxlength truncation failed: got "${truncated}"`)
+      await ageInput.fill('5')
+      await expect(createButton).toBeEnabled()
+      await createButton.click({ timeout: 2000 })
+      await expect(page).toHaveURL('/parent', { timeout: 5000 })
+    }).toPass({ timeout: 20000 })
+  })
+
+  test('Reject age greater than 120', async ({ page }) => {
+    // 2. Enter 'Eve', enter '121' in Age - Create button should be disabled
+    await page.getByLabel('Name').fill('Eve')
+    await page.getByLabel('Age').fill('121')
+
+    await expect(page.getByRole('button', { name: 'Create' })).toBeDisabled()
+    await expect(page).toHaveURL('/parent/children/create')
+  })
+})