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/lib/constants.ts

@@ -0,0 +1,44 @@
+// SQLite doesn't support Prisma enums — use string literals throughout the server.
+// These types mirror client/src/types/index.ts
+
+export type ModuleType =
+  | 'SWITCH' | 'AGGREGATE_SWITCH' | 'MODEM' | 'ROUTER' | 'NAS'
+  | 'PDU' | 'PATCH_PANEL' | 'SERVER' | 'FIREWALL' | 'AP' | 'BLANK' | 'OTHER';
+
+export type PortType = 'ETHERNET' | 'SFP' | 'SFP_PLUS' | 'QSFP' | 'CONSOLE' | 'UPLINK';
+
+export type VlanMode = 'ACCESS' | 'TRUNK' | 'HYBRID';
+
+export type NodeType =
+  | 'SERVICE' | 'DATABASE' | 'API' | 'DEVICE' | 'EXTERNAL'
+  | 'USER' | 'VLAN' | 'FIREWALL' | 'LOAD_BALANCER' | 'NOTE';
+
+export const MODULE_PORT_DEFAULTS: Record<ModuleType, number> = {
+  SWITCH: 24,
+  AGGREGATE_SWITCH: 8,
+  ROUTER: 4,
+  FIREWALL: 8,
+  PATCH_PANEL: 24,
+  AP: 1,
+  MODEM: 2,
+  SERVER: 2,
+  NAS: 1,
+  PDU: 12,
+  BLANK: 0,
+  OTHER: 0,
+};
+
+export const MODULE_U_DEFAULTS: Record<ModuleType, number> = {
+  SWITCH: 1,
+  AGGREGATE_SWITCH: 2,
+  ROUTER: 1,
+  FIREWALL: 1,
+  PATCH_PANEL: 1,
+  AP: 1,
+  MODEM: 1,
+  SERVER: 2,
+  NAS: 4,
+  PDU: 1,
+  BLANK: 1,
+  OTHER: 1,
+};

server/lib/prisma.ts

@@ -0,0 +1,14 @@
+import { PrismaClient } from '@prisma/client';
+
+// Singleton pattern prevents multiple PrismaClient instances in dev (hot reload)
+const globalForPrisma = globalThis as unknown as { prisma: PrismaClient };
+
+export const prisma =
+  globalForPrisma.prisma ??
+  new PrismaClient({
+    log: process.env.NODE_ENV === 'development' ? ['query', 'error', 'warn'] : ['error'],
+  });
+
+if (process.env.NODE_ENV !== 'production') {
+  globalForPrisma.prisma = prisma;
+}