Add end-to-end tests for parent notifications and actions

- Implement tests for approving and denying rewards and chores, including token generation and validation.
- Create tests for error handling scenarios with expired, tampered, and fake tokens.
- Add tests for push subscription registration and user profile notification settings.
- Ensure that notifications reflect the correct state of rewards and chores in the UI.
- Validate that toggles for email digest and push notifications function correctly based on user permissions and server state.

frontend/vue-app/playwright.config.ts

@@ -116,6 +116,16 @@ export default defineConfig({
       testMatch: [/mode_parent\/chore-scheduler\/.+\.spec\.ts/],
     },
 
+    {
+      // Bucket: parent notifications tests — push subscription, chore/reward
+      // notification approval/denial, deep-link navigation, digest tokens, and
+      // user profile notification settings. Each spec creates its own isolated child.
+      name: 'chromium-parent-notifications',
+      use: { ...devices['Desktop Chrome'], storageState: STORAGE_STATE },
+      dependencies: ['setup'],
+      testMatch: [/mode_parent\/notifications\/.+\.spec\.ts/],
+    },
+
     {
       // Bucket: parent profile button tests (permanent parent mode).
       name: 'chromium-profile-button',
@@ -163,6 +173,7 @@ export default defineConfig({
         /mode_parent\/profile-button\//,
         /mode_parent\/user-profile\//,
         /mode_parent\/chore-scheduler\//,
+        /mode_parent\/notifications\//,
       ],
     },
 
@@ -232,6 +243,10 @@ export default defineConfig({
         DATA_ENV: 'e2e',
         SECRET_KEY: 'dev-secret-key-change-in-production',
         REFRESH_TOKEN_EXPIRY_DAYS: '90',
+        DIGEST_TOKEN_SECRET: 'dev-digest-token',
+        VAPID_PUBLIC_KEY:
+          'BNKkHdq45uLigohSG7c1TwlAo7ETncoRVLQK02LxHgu2P1DgSJD9njRMfbbzUsaTQGllvLBz7An1WiWsNYQhvKE',
+        VAPID_PRIVATE_KEY: 'jNiZJT0UO4H861KmnCt874Fg6p5jDAyYKS4V2MZf8bQ',
         PROCESS_PLATFORM: process.platform,
       },
     },