feat: platform backbone and field capture, first part (checkpoint)

Platform backbone (plan 2026-10-13-plattform-rueckgrat), reviewed tasks:
- run roles api/worker/job/all with shared startup checks (Task 1)
- schema and migration for DomainEvent, deliveries, JobRun, ThrottlerHit (Task 2)
- audit, notifications and domain events written in the same transaction (Task 3)
- dispatcher with SKIP LOCKED claims, retries and stale release (Task 4)
- worker building blocks: tick, LISTEN/NOTIFY wake-up, health (Task 5)
- worker process and entry points (Task 6)
- throttler counters in Postgres (Task 19)
- separate keys per purpose with key ring (Task 20)
- public origin page without exact location (Task 22)
- shop keys split into read and write (Task 23)
- Kustomize base, components, overlay encry, CI validation (Task 26)

Field capture T3 (plan 2026-10-13-t3-erfassung-am-stand), reviewed tasks:
- brood frames, read endpoints, apiary overview and offline pack
- network basics, offline queue v3, navigation sheets, form building blocks
- new inspection with last-time hints and weather, varroa per day,
  treatment prefill, apiary page with round
- inspection photo (Task 10) is implemented, review pending

Not rolled out. Remaining tasks follow in later commits.

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

ApiCore-Backend/src/weather/weather.service.ts

@@ -30,6 +30,9 @@ export interface DailyWeather {
   tempMinC: number | null;
   precipitationMm: number | null;
   windSpeedMaxKmh: number | null;
+  // WMO weather interpretation code (Open-Meteo `weather_code`); null when
+  // the provider omits it.
+  weatherCode: number | null;
   // null when a required value is missing (rather than a misleading guess).
   inspectionSuitable: boolean | null;
 }
@@ -54,6 +57,7 @@ interface OpenMeteoDaily {
   temperature_2m_min: (number | null)[];
   precipitation_sum: (number | null)[];
   wind_speed_10m_max: (number | null)[];
+  weather_code?: (number | null)[];
 }
 
 interface OpenMeteoResponse {
@@ -108,7 +112,7 @@ export class WeatherService {
     url.searchParams.set('longitude', String(longitude));
     url.searchParams.set(
       'daily',
-      'temperature_2m_max,temperature_2m_min,precipitation_sum,wind_speed_10m_max',
+      'temperature_2m_max,temperature_2m_min,precipitation_sum,wind_speed_10m_max,weather_code',
     );
     url.searchParams.set('wind_speed_unit', 'kmh');
     url.searchParams.set('past_days', String(PAST_DAYS));
@@ -136,6 +140,7 @@ export class WeatherService {
       temperature_2m_min,
       precipitation_sum,
       wind_speed_10m_max,
+      weather_code,
     } = body.daily;
     return time.map((date, index) => {
       const tempMaxC = temperature_2m_max[index] ?? null;
@@ -147,6 +152,7 @@ export class WeatherService {
         tempMinC: temperature_2m_min[index] ?? null,
         precipitationMm,
         windSpeedMaxKmh,
+        weatherCode: weather_code?.[index] ?? null,
         inspectionSuitable:
           tempMaxC === null ||
           precipitationMm === null ||