Refactor Playwright tests and update configurations

- Consolidated kindness and penalty tests into single files to ensure serial execution and prevent conflicts.
- Updated Playwright configuration to define separate test buckets for child options and create child tests, ensuring proper execution order.
- Added new tests for child kebab menu options including editing, deleting points, and confirming child deletion.
- Removed obsolete tests for kindness and penalty default management.
- Updated authentication tokens in user.json for improved security.
- Enhanced test reliability by implementing retry logic for UI interactions in the create-child happy path test.

frontend/vue-app/e2e/mode_parent/create-child/happy-path.spec.ts

@@ -26,6 +26,10 @@ async function deleteAllChildren(request: any) {
 }
 
 test.describe('Create Child', () => {
+  // Serial mode: the 'empty state' test calls deleteAllChildren() which would
+  // race against sibling tests creating children if they ran in parallel.
+  test.describe.configure({ mode: 'serial' })
+
   test.beforeEach(async ({ page }, testInfo) => {
     test.skip(testInfo.project.name === 'chromium-no-pin', 'Requires parent-authenticated mode')
   })
@@ -74,18 +78,20 @@ test.describe('Create Child', () => {
   })
 
   test('Create a child via the inline Create button in empty state', async ({ page, request }) => {
-    await deleteAllChildren(request)
+    // 1. Navigate to empty state and click inline Create.
+    //    Retry-loop handles SSE-triggered re-renders: a parallel test may add a child
+    //    between deleteAllChildren() and the click, detaching the empty-state button.
+    await expect(async () => {
+      await deleteAllChildren(request)
+      await page.goto('/')
+      await expect(page.getByText('No children')).toBeVisible({ timeout: 5000 })
+      await page.getByRole('button', { name: 'Create' }).click({ timeout: 5000 })
+      await expect(page.getByRole('heading', { name: 'Create Child' })).toBeVisible({
+        timeout: 5000,
+      })
+    }).toPass({ timeout: 30000 })
 
-    // 1. Navigate to app root - router redirects to /parent (children list)
-    await page.goto('/')
-    await expect(page.getByText('No children')).toBeVisible()
-    await expect(page.getByRole('button', { name: 'Create' })).toBeVisible()
-
-    // 2. Click the inline 'Create' button
-    await page.getByRole('button', { name: 'Create' }).click()
-    await expect(page.getByRole('heading', { name: 'Create Child' })).toBeVisible()
-
-    // 3. Enter 'Bob' and '10', then submit
+    // 2. Enter 'Bob' and '10', then submit
     const nameInput = page.getByLabel('Name')
     const ageInput = page.getByLabel('Age')
     const createButton = page.getByRole('button', { name: 'Create' })