Initial commit: lottery project structure

Add core project files including:
- Client and server directories
- Backup script
- Package configuration
- Git ignore rules

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

package.json

@@ -0,0 +1,10 @@
+{
+  "name": "lottery-tracker",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "server": "cd server && npm start",
+    "client": "cd client && npm start",
+    "dev": "concurrently \"npm run server\" \"npm run client\""
+  }
+}