feat: implement routines feature for child and parent modes

- Added backend models for routines, routine items, and schedules.
- Created API endpoints for managing routines and their items.
- Implemented frontend components for routine creation, detail view, and assignment.
- Integrated routines into child view with a scrolling list and approval workflow.
- Added push notifications for routine confirmations and pending approvals.
- Refactored existing components to accommodate new routines functionality.
- Updated tests to cover new routines feature and ensure proper functionality.

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

@@ -7,6 +7,12 @@ import { fileURLToPath } from 'url'
 const __dirname = path.dirname(fileURLToPath(import.meta.url))
 const TEST_IMAGE = path.join(__dirname, '../../.resources/crown.png')
 
+/** Navigate to the parent children list and wait for the Add Child button to be ready. */
+async function gotoParentList(page: import('@playwright/test').Page): Promise<void> {
+  await page.goto('/')
+  await expect(page.getByRole('button', { name: 'Add Child' })).toBeVisible({ timeout: 10000 })
+}
+
 async function deleteNamedChildren(request: any, names: string[]) {
   const res = await request.get('/api/child/list')
   const data = await res.json()
@@ -38,7 +44,7 @@ test.describe('Create Child', () => {
     await deleteNamedChildren(request, ['Alice'])
 
     // 1. Navigate to app root - router redirects to /parent (children list) when parent-authenticated
-    await page.goto('/')
+    await gotoParentList(page)
     await expect(page).toHaveURL('/parent')
 
     // 2. Click the 'Add Child' FAB
@@ -123,7 +129,7 @@ test.describe('Create Child', () => {
     await deleteNamedChildren(request, ['Grace'])
 
     // 1. Navigate to app root - router redirects to /parent (children list)
-    await page.goto('/')
+    await gotoParentList(page)
     await page.getByRole('button', { name: 'Add Child' }).click()
     await expect(page.getByRole('heading', { name: 'Create Child' })).toBeVisible()