feat(backend): Inventar (Modul 24)

EquipmentModule (GET/POST /equipment, GET/PATCH /equipment/:id) fuer
Ausruestungsgegenstaende (Inventarnummer, Bezeichnung, Hersteller,
Kaufdatum, Zustand, Standort, Wartungsdatum). Neues Prisma-Modell
Equipment (Migration equipment).

ApiCore-Backend/prisma/migrations/20260822202209_equipment/migration.sql

@@ -0,0 +1,24 @@
+-- CreateEnum
+CREATE TYPE "EquipmentCondition" AS ENUM ('NEW', 'GOOD', 'WORN', 'DEFECTIVE');
+
+-- CreateTable
+CREATE TABLE "Equipment" (
+    "id" TEXT NOT NULL,
+    "inventoryNumber" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "manufacturer" TEXT,
+    "purchaseDate" TIMESTAMP(3),
+    "condition" "EquipmentCondition" NOT NULL DEFAULT 'GOOD',
+    "location" TEXT,
+    "maintenanceDate" TIMESTAMP(3),
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "Equipment_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Equipment_inventoryNumber_key" ON "Equipment"("inventoryNumber");
+
+-- CreateIndex
+CREATE INDEX "Equipment_condition_idx" ON "Equipment"("condition");