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/bottling/bottling.service.ts

@@ -6,6 +6,7 @@ import {
 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 { BottlingBatch } from '../../generated/prisma';
 import { CreateBottlingBatchDto } from './dto/create-bottling-batch.dto';
 import { UpdateBottlingBatchDto } from './dto/update-bottling-batch.dto';
@@ -25,6 +26,7 @@ export class BottlingService {
     private readonly prisma: PrismaService,
     private readonly auditLog: AuditLogService,
     private readonly webhooks: WebhooksService,
+    private readonly automation: AutomationService,
   ) {}
 
   async findAll(filter: BottlingBatchFilter = {}) {
@@ -69,6 +71,15 @@ export class BottlingService {
       );
     }
 
+    const lotNumber =
+      dto.lotNumber ??
+      (await this.automation.generateNumber('BOTTLING_LOT_NUMBER_FORMAT'));
+    if (!lotNumber) {
+      throw new BadRequestException(
+        'Los-/Chargennummer erforderlich (oder Automatisierung "Los-/Chargennummer-Format" aktivieren)',
+      );
+    }
+
     const bottlingBatch: BottlingBatch = await this.prisma.$transaction(
       async (tx) => {
         const created = await tx.bottlingBatch.create({
@@ -80,7 +91,7 @@ export class BottlingService {
             jarCount: dto.jarCount,
             totalAmount,
             bestBeforeDate: new Date(dto.bestBeforeDate),
-            lotNumber: dto.lotNumber,
+            lotNumber,
             userId: actingUserId,
           },
         });