Dialog with bell label, empty state vs populated list, mark-all-read visibility branch, REPLY vs MENTION text, unread-dot rendering, all three callback wirings (onMarkRead, onMarkAllRead, onClose). 10 tests covering the notification dropdown surface. Refs #496. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
notification (frontend)
Bell-icon dropdown and real-time SSE connection for in-app notifications.
What this domain owns
Components: NotificationBell.svelte, NotificationDropdown.svelte.
Utilities: notifications.svelte.ts (Svelte 5 reactive store), notifications.ts (API helpers).
What this domain does NOT own
- SSE infrastructure — the backend's
SseEmitterRegistrymanages the server-side emitter. The frontend establishes oneEventSourceconnection per session. Connection management lives innotifications.svelte.ts. - Notification content rendering — notification payloads contain a
contextUrl; the frontend navigates there on click.
Key design: SSE connection
The SSE path is backend → browser directly (not proxied through SvelteKit SSR). The EventSource connects to /api/notifications/stream. On receive, the reactive store updates the unread count and the bell dropdown in real time.
Backend SseEmitterRegistry → /api/notifications/stream → EventSource in browser
Key components
| Component | Used in | Notes |
|---|---|---|
NotificationBell.svelte |
global nav (+layout.svelte) |
Bell icon with unread badge; opens NotificationDropdown |
NotificationDropdown.svelte |
global nav | Scrollable list of recent notifications with mark-read |
Cross-domain imports
shared/primitives/— icon, button primitives only
Backend counterpart
backend/src/main/java/org/raddatz/familienarchiv/notification/README.md