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/queens/queens.service.ts

@@ -1,11 +1,15 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
 import { PrismaService } from '../prisma/prisma.service';
 import { AuditLogService } from '../audit/audit-log.service';
-import { Queen } from '../../generated/prisma';
+import { Queen, QueenStatus } from '../../generated/prisma';
 import { CreateQueenDto } from './dto/create-queen.dto';
 import { UpdateQueenDto } from './dto/update-queen.dto';
 import { AssignColonyDto } from './dto/assign-colony.dto';
 
+export interface QueenFilter {
+  status?: QueenStatus;
+}
+
 @Injectable()
 export class QueensService {
   constructor(
@@ -13,8 +17,11 @@ export class QueensService {
     private readonly auditLog: AuditLogService,
   ) {}
 
-  async findAll(): Promise<Queen[]> {
-    return this.prisma.queen.findMany({ orderBy: { code: 'asc' } });
+  async findAll(filter: QueenFilter = {}): Promise<Queen[]> {
+    return this.prisma.queen.findMany({
+      where: { status: filter.status },
+      orderBy: { code: 'asc' },
+    });
   }
 
   async findById(id: string): Promise<Queen> {