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/automation/automation.service.spec.ts

@@ -79,7 +79,7 @@ describe('AutomationService', () => {
 
     const result = await service.findAll();
 
-    expect(prisma.automationRule.upsert).toHaveBeenCalledTimes(6);
+    expect(prisma.automationRule.upsert).toHaveBeenCalledTimes(8);
     expect(result).toHaveLength(3);
   });
 
@@ -307,4 +307,86 @@ describe('AutomationService', () => {
       );
     });
   });
+
+  describe('generateNumber', () => {
+    it('returns null when the rule is inactive', async () => {
+      prisma.automationRule.findUnique.mockResolvedValue({
+        id: 'rule-4',
+        triggerType: 'HONEY_BATCH_NUMBER_FORMAT',
+        active: false,
+        config: { format: 'WH-{YYYY}-{SEQ:4}' },
+        sequenceValue: 0,
+      });
+
+      const result = await service.generateNumber('HONEY_BATCH_NUMBER_FORMAT');
+
+      expect(result).toBeNull();
+      expect(prisma.automationRule.update).not.toHaveBeenCalled();
+    });
+
+    it('returns null when no format is configured', async () => {
+      prisma.automationRule.findUnique.mockResolvedValue({
+        id: 'rule-4',
+        triggerType: 'HONEY_BATCH_NUMBER_FORMAT',
+        active: true,
+        config: {},
+        sequenceValue: 0,
+      });
+
+      const result = await service.generateNumber('HONEY_BATCH_NUMBER_FORMAT');
+
+      expect(result).toBeNull();
+    });
+
+    it('atomically increments sequenceValue and formats the number', async () => {
+      prisma.automationRule.findUnique.mockResolvedValue({
+        id: 'rule-4',
+        triggerType: 'HONEY_BATCH_NUMBER_FORMAT',
+        active: true,
+        config: { format: 'WH-{YYYY}-{SEQ:4}' },
+        sequenceValue: 0,
+      });
+      prisma.automationRule.update.mockResolvedValue({ sequenceValue: 7 });
+
+      const result = await service.generateNumber('HONEY_BATCH_NUMBER_FORMAT');
+
+      expect(prisma.automationRule.update).toHaveBeenCalledWith({
+        where: { triggerType: 'HONEY_BATCH_NUMBER_FORMAT' },
+        data: { sequenceValue: { increment: 1 } },
+        select: { sequenceValue: true },
+      });
+      expect(result).toBe(`WH-${new Date().getFullYear()}-0007`);
+    });
+  });
+
+  describe('resetSequence', () => {
+    it('sets sequenceValue back to 0 and records an audit log entry', async () => {
+      prisma.automationRule.findUnique.mockResolvedValue({
+        id: 'rule-4',
+        triggerType: 'HONEY_BATCH_NUMBER_FORMAT',
+        active: true,
+        config: { format: 'WH-{YYYY}-{SEQ:4}' },
+        sequenceValue: 12,
+      });
+      prisma.automationRule.update.mockResolvedValue({
+        id: 'rule-4',
+        sequenceValue: 0,
+      });
+
+      await service.resetSequence('rule-4', 'user-1');
+
+      expect(prisma.automationRule.update).toHaveBeenCalledWith({
+        where: { id: 'rule-4' },
+        data: { sequenceValue: 0 },
+      });
+      expect(auditLog.record).toHaveBeenCalledWith(
+        expect.objectContaining({
+          entityType: 'AutomationRule',
+          entityId: 'rule-4',
+          action: 'UPDATE',
+          userId: 'user-1',
+        }),
+      );
+    });
+  });
 });