feat: T4 wave 3 - notifications per user, suggestions API, varroa bands, split/queen events

- Schema III: per-user notifications (broadcast fan-out migration,
  category, link, requiredPermissions filter), notification preferences
  and settings endpoints, calendar withdrawal switch, occupiedFrames
- Suggestions API: list/summary with permission visibility and paging,
  accept/dismiss/reopen incl. bulk, SuggestionView on all responses
- Varroa traffic light by season and method, young colonies, treatment
  effect window, sample-based percentage; shared withdrawal-window helper
  on Berlin calendar days; GET /varroa-measurements/thresholds
- ColonySplit and QueenAssigned domain events with calendar and webhook
  handlers
- Outbox claims compare against now() rounded to timestamp(3); fixes the
  flaky e2e claims of rows written with SQL now()

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Backend/src/calendar-sync/calendar-sync.handlers.spec.ts

@@ -59,6 +59,24 @@ describe('CalendarSyncEventHandlers', () => {
     },
   );
 
+  it('QueenAssigned enqueues QUEEN_ASSIGNMENT with the history id', async () => {
+    await handlers.queenAssignment(
+      envelope('QueenAssigned', 'queen-1', {
+        colonyId: 'colony-1',
+        historyId: 'history-1',
+        assignedOn: '2026-10-14',
+        previousColonyId: null,
+      }),
+      tx,
+    );
+
+    expect(calendarSync.enqueueIn).toHaveBeenCalledWith(
+      tx,
+      'QUEEN_ASSIGNMENT',
+      'history-1',
+    );
+  });
+
   it('TaskCreated without a due date enqueues nothing', async () => {
     await handlers.task(
       envelope('TaskCreated', 'task-1', { dueDate: null }),
@@ -105,6 +123,12 @@ describe('CalendarSyncEventHandlers', () => {
     );
     expect(registered('feeding')[0].handlerId).toBe('calendar-sync.feeding');
     expect(registered('harvest')[0].handlerId).toBe('calendar-sync.harvest');
+    expect(registered('queenAssignment')).toEqual([
+      {
+        types: ['QueenAssigned'],
+        handlerId: 'calendar-sync.queen-assignment',
+      },
+    ]);
     expect(registered('task')).toEqual([
       {
         types: ['TaskCreated', 'TaskUpdated', 'TaskCompleted'],