feat: Wabenhain Honig-Shop Anwendung

Vollstaendige Next.js/Prisma-E-Commerce-Anwendung fuer eine Imkerei:
Shop, Warenkorb, Stripe-Checkout, Kundenkonto mit 2FA, Admin-Bereich
(Produkte, Ernten, Chargen, Bestellungen, Gutscheine, admin-editierbare
Website-Inhalte), i18n (DE/EN), Rate-Limiting/CSP/Audit-Log-Haertung,
PostgreSQL- und MySQL-Unterstuetzung ueber austauschbare Prisma-
Treiber-Adapter, Unit-/Komponenten-/E2E-Tests.

prisma/migrations/20260812212850_stock_notifications/migration.sql

@@ -0,0 +1,17 @@
+-- CreateTable
+CREATE TABLE "stock_notifications" (
+    "id" TEXT NOT NULL,
+    "productId" TEXT NOT NULL,
+    "email" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "notifiedAt" TIMESTAMP(3),
+
+    CONSTRAINT "stock_notifications_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "stock_notifications_productId_email_key" ON "stock_notifications"("productId", "email");
+
+-- AddForeignKey
+ALTER TABLE "stock_notifications" ADD CONSTRAINT "stock_notifications_productId_fkey" FOREIGN KEY ("productId") REFERENCES "products"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+