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/apiaries/apiaries.service.ts

@@ -1,10 +1,15 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
 import { PrismaService } from '../prisma/prisma.service';
 import { AuditLogService } from '../audit/audit-log.service';
-import { Apiary } from '../../generated/prisma';
+import { Apiary, ApiaryStatus } from '../../generated/prisma';
 import { CreateApiaryDto } from './dto/create-apiary.dto';
 import { UpdateApiaryDto } from './dto/update-apiary.dto';
 
+export interface ApiaryFilter {
+  status?: ApiaryStatus;
+  location?: string;
+}
+
 @Injectable()
 export class ApiariesService {
   constructor(
@@ -12,8 +17,16 @@ export class ApiariesService {
     private readonly auditLog: AuditLogService,
   ) {}
 
-  async findAll(): Promise<Apiary[]> {
-    return this.prisma.apiary.findMany({ orderBy: { name: 'asc' } });
+  async findAll(filter: ApiaryFilter = {}): Promise<Apiary[]> {
+    return this.prisma.apiary.findMany({
+      where: {
+        status: filter.status,
+        location: filter.location
+          ? { contains: filter.location, mode: 'insensitive' }
+          : undefined,
+      },
+      orderBy: { name: 'asc' },
+    });
   }
 
   async findById(id: string): Promise<Apiary> {