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/prisma/migrations/20260822090024_bottling_products/migration.sql

@@ -0,0 +1,59 @@
+-- CreateEnum
+CREATE TYPE "ProductStatus" AS ENUM ('ACTIVE', 'DISCONTINUED');
+
+-- CreateTable
+CREATE TABLE "Product" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "description" TEXT,
+    "sku" TEXT,
+    "packagingSize" DOUBLE PRECISION,
+    "weight" DOUBLE PRECISION,
+    "salesUnit" TEXT,
+    "status" "ProductStatus" NOT NULL DEFAULT 'ACTIVE',
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "Product_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "BottlingBatch" (
+    "id" TEXT NOT NULL,
+    "honeyBatchId" TEXT NOT NULL,
+    "productId" TEXT,
+    "date" TIMESTAMP(3) NOT NULL,
+    "jarSize" DOUBLE PRECISION NOT NULL,
+    "jarCount" INTEGER NOT NULL,
+    "totalAmount" DOUBLE PRECISION NOT NULL,
+    "bestBeforeDate" TIMESTAMP(3) NOT NULL,
+    "lotNumber" TEXT NOT NULL,
+    "userId" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "BottlingBatch_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Product_sku_key" ON "Product"("sku");
+
+-- CreateIndex
+CREATE INDEX "Product_status_idx" ON "Product"("status");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "BottlingBatch_lotNumber_key" ON "BottlingBatch"("lotNumber");
+
+-- CreateIndex
+CREATE INDEX "BottlingBatch_honeyBatchId_idx" ON "BottlingBatch"("honeyBatchId");
+
+-- CreateIndex
+CREATE INDEX "BottlingBatch_productId_idx" ON "BottlingBatch"("productId");
+
+-- AddForeignKey
+ALTER TABLE "BottlingBatch" ADD CONSTRAINT "BottlingBatch_honeyBatchId_fkey" FOREIGN KEY ("honeyBatchId") REFERENCES "HoneyBatch"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "BottlingBatch" ADD CONSTRAINT "BottlingBatch_productId_fkey" FOREIGN KEY ("productId") REFERENCES "Product"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "BottlingBatch" ADD CONSTRAINT "BottlingBatch_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE SET NULL ON UPDATE CASCADE;