Initial scaffold: full-stack RackMapper application

Complete project scaffold with working auth, REST API, Prisma/SQLite
schema, Docker config, and React frontend for both Rack Planner and
Service Mapper modules. Both server and client pass TypeScript strict
mode with zero errors. Initial migration applied.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/services/portService.ts

@@ -0,0 +1,47 @@
+import { prisma } from '../lib/prisma';
+import { AppError } from '../types/index';
+import type { VlanMode } from '../lib/constants';
+
+const portInclude = {
+  vlans: { include: { vlan: true } },
+};
+
+export async function updatePort(
+  id: string,
+  data: {
+    label?: string;
+    mode?: VlanMode;
+    nativeVlan?: number | null;
+    notes?: string;
+    vlans?: Array<{ vlanId: string; tagged: boolean }>;
+  }
+) {
+  const existing = await prisma.port.findUnique({ where: { id } });
+  if (!existing) throw new AppError('Port not found', 404, 'NOT_FOUND');
+
+  const { vlans: vlanAssignments, ...portData } = data;
+
+  return prisma.$transaction(async (tx) => {
+    await tx.port.update({ where: { id }, data: portData });
+
+    if (vlanAssignments !== undefined) {
+      if (vlanAssignments.length > 0) {
+        const vlanIds = vlanAssignments.map((v) => v.vlanId);
+        const found = await tx.vlan.findMany({ where: { id: { in: vlanIds } } });
+        if (found.length !== vlanIds.length) {
+          throw new AppError('One or more VLANs not found', 404, 'VLAN_NOT_FOUND');
+        }
+      }
+
+      await tx.portVlan.deleteMany({ where: { portId: id } });
+
+      if (vlanAssignments.length > 0) {
+        await tx.portVlan.createMany({
+          data: vlanAssignments.map(({ vlanId, tagged }) => ({ portId: id, vlanId, tagged })),
+        });
+      }
+    }
+
+    return tx.port.findUnique({ where: { id }, include: portInclude });
+  });
+}