feat(automation): number formats for raw material and production batches, raw material minimum

- RAW_MATERIAL_LOT_NUMBER_FORMAT / PRODUCTION_BATCH_NUMBER_FORMAT fill in the
  lot number when it is left empty, like honey batches and bottlings.
- RAW_MATERIAL_LOW: task when the total of a raw material kind drops below
  config.minGrams after consumption, withdrawal or inventory count.

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

ApiCore-Frontend/src/lib/raw-materials/types.ts

@@ -28,7 +28,8 @@ export interface RawMaterialLot {
 
 export interface CreateRawMaterialLotInput {
   kind: RawMaterialKind;
-  lotNumber: string;
+  /** Leer = automatisch, falls die Automatisierung aktiv ist. */
+  lotNumber?: string;
   date: string;
   quantity: number;
   apiaryId?: string;