fix: T4a browser check findings

- Withdrawal wording from one backend helper everywhere ("bis
  einschließlich TT.MM. – ab TT.MM. wieder erntefähig", year when it
  crosses New Year); withdrawal-status returns lastBlockedDay and the
  ready text, the frontend no longer computes dates
- Calendar events name colony or apiary, withdrawal events carry
  product and detail; compact withdrawal rows on mobile
- One bottling warning per colony and treatment; pre-save hint
- Offline: online-only actions disabled with a reason, cached data
  shows its timestamp, open sheets block submit offline
- Mobile: no horizontal scroll at 360 px, touch targets >= 44 px,
  toasts and the add button no longer cover content
- Cleanup sheet without destructive preselection; natural sort of
  colony codes; collapsible automation rule cards; varroa list newest
  first with chart axes; text fixes

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

ApiCore-Backend/test/treatments.e2e-spec.ts

@@ -16,6 +16,8 @@ interface TreatmentBody {
 interface WithdrawalStatusBody {
   colonyId: string;
   activeUntil: string;
+  lastBlockedDay: string;
+  withdrawalText: string;
   product: string;
 }
 
@@ -254,6 +256,9 @@ describe('Treatments (e2e)', () => {
         {
           colonyId,
           activeUntil: '2026-07-15T00:00:00.000Z',
+          lastBlockedDay: '2026-07-14',
+          withdrawalText:
+            'bis einschließlich 14.07. – ab 15.07. wieder erntefähig',
           product: 'Oxalsäure',
         },
       ]);