feat: T4 wave 6 - reminders and morning digest, next steps UI, warnings and notifications UI

- In-app reminders: task due (skips rescheduled tasks, catch-up wording)
  and a per-user morning digest step in the daily job
- Frontend: "Als Nächstes" on the colony page, "Heute" on the dashboard,
  inspection-due card, season chip, apiary overview fields, cleanup
  sheet for ended colonies
- Frontend: plausibility warnings that stay until dismissed, withdrawal
  spans in the calendar, notification bell with categories and links,
  notification settings in the profile
- ARCHITECTURE.md: T4a sections 11.1-11.10, assumptions 31-41, handler
  table and daily job step order

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

ApiCore-Frontend/src/lib/apiaries/offline-pack.fixtures.ts

@@ -20,6 +20,7 @@ export function packColony(id: string, code: string, overrides: Partial<PackColo
     colonyType: "PRODUCTION_COLONY",
     hiveType: "Zander",
     strength: 8,
+    occupiedFrames: 9,
     broodStatus: "GOOD",
     feedStatus: "GOOD",
     healthStatus: "GOOD",
@@ -35,10 +36,14 @@ export function overviewRow(colony: PackColony, overrides: Partial<ColonyOvervie
     code: colony.code,
     status: colony.status,
     strength: colony.strength,
+    occupiedFrames: colony.occupiedFrames,
     broodStatus: colony.broodStatus,
     feedStatus: colony.feedStatus,
     healthStatus: colony.healthStatus,
     lastInspectionDate: new Date().toISOString(),
+    inspectionDueOn: null,
+    segment: null,
+    nextStepTitle: null,
     openWarnings: 0,
     openCritical: 0,
     ...overrides,