Initial commit: Phase 1 scaffolding complete

- Root package.json with concurrently for dev server
- Client: Vite + React 18 with design tokens and proxy config
- Server: Express with CORS, multer (20MB), Sharp resize
- Upload endpoint with preview generation
- Dockerfile (multi-stage) and docker-compose.yml
- Canvas deferred to Phase 8 (export functionality)

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

docker-compose.yml

@@ -0,0 +1,27 @@
+version: '3.8'
+
+services:
+  apparel-designer:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: apparel-designer
+    ports:
+      - "3001:3001"
+    volumes:
+      - uploads_data:/app/server/uploads
+      - exports_data:/app/server/exports
+    environment:
+      - NODE_ENV=production
+      - PORT=3001
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3001/api/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+
+volumes:
+  uploads_data:
+  exports_data: