device-voice-h5/openspec/changes/add-personal-notifications/tasks.md

1. API and Data Contract

• 1.1 Define the client-side personal notification item and paginated list contract
• 1.2 Define the client-side unread count and read-operation contracts
• 1.3 Add authenticated notification API wrappers

2. Notification Behavior

• 2.1 Return only current customer's visible, unexpired business notifications
• 2.2 Apply creation-time and notification-ID descending ordering
• 2.3 Support idempotent single-read and read-all operations
• 2.4 Exclude platform sync and system operations notifications from unread count

3. Client Entry

• 3.1 Add the personal notification list entry and pagination handling
• 3.2 Add unread-count display and refresh behavior
• 3.3 Mark notifications read from list actions and support mark-all-read

4. Verification

• 4.1 Test authentication, pagination limits, ordering, and visibility isolation
• 4.2 Test idempotent read behavior and unread-count updates
• 4.3 Verify the H5 build and unified success/error response handling

Note: The repository contains the H5 client only. Tasks 2.1-2.4 and 4.1-4.2 require implementation and verification in the backend service repository.