feat(backend): Suche und Filter (Modul 14)

SearchModule mit GET /search?q= über Bienenstände, Völker,
Königinnen, Aufgaben und Honigchargen. Kombinierbare Filter
(Status, Standort, Bienenstand) in den bestehenden List-Endpunkten.

ApiCore-Backend/src/search/search.service.spec.ts

@@ -0,0 +1,48 @@
+import { SearchService } from './search.service';
+import { PrismaService } from '../prisma/prisma.service';
+
+describe('SearchService', () => {
+  let service: SearchService;
+  let prisma: {
+    apiary: { findMany: jest.Mock };
+    colony: { findMany: jest.Mock };
+    queen: { findMany: jest.Mock };
+    task: { findMany: jest.Mock };
+    honeyBatch: { findMany: jest.Mock };
+  };
+
+  beforeEach(() => {
+    prisma = {
+      apiary: { findMany: jest.fn().mockResolvedValue([]) },
+      colony: { findMany: jest.fn().mockResolvedValue([]) },
+      queen: { findMany: jest.fn().mockResolvedValue([]) },
+      task: { findMany: jest.fn().mockResolvedValue([]) },
+      honeyBatch: { findMany: jest.fn().mockResolvedValue([]) },
+    };
+    service = new SearchService(prisma as unknown as PrismaService);
+  });
+
+  it('returns an empty array for a blank query', async () => {
+    const results = await service.search('   ');
+    expect(results).toEqual([]);
+    expect(prisma.apiary.findMany).not.toHaveBeenCalled();
+  });
+
+  it('combines matches from every entity type', async () => {
+    prisma.colony.findMany.mockResolvedValue([
+      { id: 'colony-1', code: 'V-001' },
+    ]);
+    prisma.apiary.findMany.mockResolvedValue([
+      { id: 'apiary-1', name: 'Heimstand' },
+    ]);
+
+    const results = await service.search('V-001');
+
+    expect(results).toEqual(
+      expect.arrayContaining([
+        { type: 'Colony', id: 'colony-1', label: 'V-001' },
+        { type: 'Apiary', id: 'apiary-1', label: 'Heimstand' },
+      ]),
+    );
+  });
+});