feat: add website social link, fix herkunft origin display, GUI backup schedule, and format-based batch numbering

- SiteSettings gains websiteUrl (e.g. online shop link) alongside the
  existing social links, editable in Verwaltung > Automatisierung.
- /herkunft/[lot] now shows the apiary's Standort instead of its internal
  Name (so multiple apiaries at one location read as one origin), adds
  small icons per social link, and surfaces previously-fetched-but-unused
  data (Honigsorte, Abfülldatum, stat cards) to make the page a richer
  customer-facing info page.
- Backup schedule (path/cron/retention) is now also configurable via the
  GUI (Verwaltung > Backup), stored in a new BackupSettings singleton;
  an env var always wins over the GUI value per field, and the scheduler
  reloads its cron job live when GUI settings change.
- New Automatisierung rules let an admin define a format (e.g.
  "WH-{YYYY}-{SEQ:4}") that auto-generates HoneyBatch.batchNumber and
  BottlingBatch.lotNumber on creation, with an atomic per-rule sequence
  counter and a manual reset. Manual entry still works when the rule is
  inactive.

ApiCore-Backend/src/honey-batches/dto/create-honey-batch.dto.ts

@@ -2,9 +2,13 @@ import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
 import { IsNumber, IsOptional, IsString } from 'class-validator';
 
 export class CreateHoneyBatchDto {
-  @ApiProperty()
+  @ApiPropertyOptional({
+    description:
+      'Wird automatisch generiert, falls die Automatisierung "Chargennummer-Format" aktiv ist',
+  })
+  @IsOptional()
   @IsString()
-  batchNumber!: string;
+  batchNumber?: string;
 
   @ApiProperty()
   @IsString()

ApiCore-Backend/src/honey-batches/honey-batches.module.ts

@@ -1,8 +1,10 @@
 import { Module } from '@nestjs/common';
+import { AutomationModule } from '../automation/automation.module';
 import { HoneyBatchesController } from './honey-batches.controller';
 import { HoneyBatchesService } from './honey-batches.service';
 
 @Module({
+  imports: [AutomationModule],
   controllers: [HoneyBatchesController],
   providers: [HoneyBatchesService],
   exports: [HoneyBatchesService],

ApiCore-Backend/src/honey-batches/honey-batches.service.spec.ts

@@ -3,6 +3,7 @@ import { HoneyBatchesService } from './honey-batches.service';
 import { PrismaService } from '../prisma/prisma.service';
 import { AuditLogService } from '../audit/audit-log.service';
 import { WebhooksService } from '../webhooks/webhooks.service';
+import { AutomationService } from '../automation/automation.service';
 
 describe('HoneyBatchesService', () => {
   let service: HoneyBatchesService;
@@ -60,10 +61,12 @@ describe('HoneyBatchesService', () => {
     };
     auditLog = { record: jest.fn() };
     const webhooks = { dispatch: jest.fn().mockResolvedValue(undefined) };
+    const automation = { generateNumber: jest.fn().mockResolvedValue(null) };
     service = new HoneyBatchesService(
       prisma as unknown as PrismaService,
       auditLog as unknown as AuditLogService,
       webhooks as unknown as WebhooksService,
+      automation as unknown as AutomationService,
     );
   });
 

ApiCore-Backend/src/honey-batches/honey-batches.service.ts

@@ -1,7 +1,12 @@
-import { Injectable, NotFoundException } from '@nestjs/common';
+import {
+  BadRequestException,
+  Injectable,
+  NotFoundException,
+} from '@nestjs/common';
 import { PrismaService } from '../prisma/prisma.service';
 import { AuditLogService } from '../audit/audit-log.service';
 import { WebhooksService } from '../webhooks/webhooks.service';
+import { AutomationService } from '../automation/automation.service';
 import { HoneyBatchStatus } from '../../generated/prisma';
 import { CreateHoneyBatchDto } from './dto/create-honey-batch.dto';
 import { UpdateHoneyBatchDto } from './dto/update-honey-batch.dto';
@@ -32,6 +37,7 @@ export class HoneyBatchesService {
     private readonly prisma: PrismaService,
     private readonly auditLog: AuditLogService,
     private readonly webhooks: WebhooksService,
+    private readonly automation: AutomationService,
   ) {}
 
   async findAll(filter: HoneyBatchFilter = {}) {
@@ -54,8 +60,16 @@ export class HoneyBatchesService {
   }
 
   async create(dto: CreateHoneyBatchDto, actingUserId: string) {
+    const batchNumber =
+      dto.batchNumber ??
+      (await this.automation.generateNumber('HONEY_BATCH_NUMBER_FORMAT'));
+    if (!batchNumber) {
+      throw new BadRequestException(
+        'Chargennummer erforderlich (oder Automatisierung "Chargennummer-Format" aktivieren)',
+      );
+    }
     const honeyBatch = await this.prisma.honeyBatch.create({
-      data: { ...dto },
+      data: { ...dto, batchNumber },
     });
     await this.auditLog.record({
       entityType: 'HoneyBatch',