feat(backend): Abfuellungen und Produkte (Modul 23)

ProductsModule (GET/POST /products, GET/PATCH /products/:id) und
BottlingModule (GET/POST /bottling-batches) mit transaktionaler
Reduzierung der HoneyBatch-Restmenge beim Abfuellen; Ablehnung bei
Abfuellmenge > verfuegbarer Menge. Neue Prisma-Modelle Product und
BottlingBatch (Migration bottling_products).

ApiCore-Backend/src/bottling/bottling.controller.ts

@@ -0,0 +1,34 @@
+import { Body, Controller, Get, Param, Post, Query } from '@nestjs/common';
+import { ApiBearerAuth, ApiTags } from '@nestjs/swagger';
+import { Role } from '../../generated/prisma';
+import { Roles } from '../auth/decorators/roles.decorator';
+import { CurrentUser } from '../auth/decorators/current-user.decorator';
+import type { AuthenticatedUser } from '../auth/types/authenticated-user';
+import { CreateBottlingBatchDto } from './dto/create-bottling-batch.dto';
+import { BottlingService } from './bottling.service';
+
+@ApiTags('bottling')
+@ApiBearerAuth()
+@Controller('bottling-batches')
+export class BottlingController {
+  constructor(private readonly bottlingService: BottlingService) {}
+
+  @Get()
+  findAll(@Query('honeyBatchId') honeyBatchId?: string) {
+    return this.bottlingService.findAll({ honeyBatchId });
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string) {
+    return this.bottlingService.findById(id);
+  }
+
+  @Roles(Role.ADMIN, Role.BEEKEEPER)
+  @Post()
+  create(
+    @Body() dto: CreateBottlingBatchDto,
+    @CurrentUser() actor: AuthenticatedUser,
+  ) {
+    return this.bottlingService.create(dto, actor.id);
+  }
+}