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>

server/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "apparel-designer-server",
+  "version": "1.0.0",
+  "type": "module",
+  "main": "index.js",
+  "scripts": {
+    "dev": "DYLD_INSERT_LIBRARIES='' node --watch index.js",
+    "start": "node index.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "cors": "^2.8.5",
+    "multer": "^1.4.5-lts.1",
+    "sharp": "^0.33.2",
+    "uuid": "^9.0.1"
+  }
+}