fix: T4 browser-check findings, interval on season state, T6 plan refresh

- Honey batch create omits an empty batch number (was 400); product form
  labels the legacy total weight, detail shows jar weight and shelf life;
  bottling hints next to their fields, values cleared on product change,
  post-save water-content wording; withdraw reason placeholder not
  selectable; honey batch actions offline-disabled with reason, 44 px.
- Offline signal: one slow request no longer flips the app offline; two
  consecutive timeouts do, any HTTP answer clears it, aborts never count.
- Phenology sheet as a side card on desktop with focus return; confirm
  dialogs as alertdialog; step-up texts in du-form ("Das Passwort stimmt
  nicht."); backup import gives its disabled reason; missing event labels
  plus a guard test; profile buttons 44 px.
- GET /phenology/state returns intervalDays via the shared
  inspectionIntervalOf (autopilot, digest, season state use one source).
- T6 plan aligned with the code after T4, plus owner decisions of
  2026-10-15 (Berlin day for restrictions, COMPLIANCE category, override
  without step-up).

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

ApiCore-Backend/src/autopilot/next-steps.service.ts

@@ -16,7 +16,10 @@ import {
 } from '../common/dates';
 import { PrismaService } from '../prisma/prisma.service';
 import { SeasonService } from '../season/season.service';
-import { inspectionDueOn } from '../season/inspection-due';
+import {
+  inspectionDueOn,
+  inspectionIntervalOf,
+} from '../season/inspection-due';
 import type { SeasonSegmentKey, SeasonState } from '../season/season-types';
 import { buildEvidenceLookup } from '../suggestions/evidence-lookup';
 import { renderSuggestion } from '../suggestions/suggestion-texts';
@@ -311,10 +314,7 @@ export class NextStepsService {
               apiaryId: season.apiaryId,
               apiaryName: nameOf(season.apiaryId),
               segment: season.segment,
-              intervalDays:
-                season.segment === 'WINTERRUHE'
-                  ? null
-                  : intervalDays[season.segment],
+              intervalDays: inspectionIntervalOf(season.segment, intervalDays),
               colonies: due,
             },
           ];