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>

docker-compose.yml

@@ -0,0 +1,26 @@
+version: '3.8'
+
+services:
+  rackmapper:
+    build: .
+    container_name: rackmapper
+    ports:
+      - "3001:3001"
+    environment:
+      - NODE_ENV=production
+      - PORT=3001
+      - DATABASE_URL=file:./data/rackmapper.db
+      - ADMIN_USERNAME=${ADMIN_USERNAME:-admin}
+      - ADMIN_PASSWORD_HASH=${ADMIN_PASSWORD_HASH}
+      - JWT_SECRET=${JWT_SECRET}
+      - JWT_EXPIRY=${JWT_EXPIRY:-8h}
+    volumes:
+      # Persists SQLite database across container restarts
+      - ./data:/app/data
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://localhost:3001/api/auth/me"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 10s