feat(sprint-6): Phase 5 — Full grow calendar (sensors, photos, feeding, harvest traceability)
- V9 migration: grow_entries, grow_stage_logs, sensor_readings, grow_photos, feeding_logs
- 5 entities + GrowStage enum (7 stages) + SensorReadingType enum
- GrowCalendarService: CRUD + stage advancement + harvest-to-batch linking
- GrowCalendarController: 8 endpoints (/api/v1/grow/*)
- Frontend: /grow list + /grow/[id] detail (timeline, sensor charts, photo gallery, feeding log)
- Sensor chart (Recharts line: temp + humidity over time)
- Harvest completion links grow entry → batch (full traceability)
- React Query hooks for all grow operations
- Full i18n (de/en) with 7 grow stage labels
- Sidebar navigation updated with Anbau/Grow entry
Patrick Plate
076fd6f9b3