Initial commit: Helpdesk application setup

- Backend: Node.js/TypeScript with Prisma ORM
- Frontend: Vite + TypeScript
- Project configuration and documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/.env.example

@@ -0,0 +1,19 @@
+# Database
+DATABASE_URL="postgresql://user:password@localhost:5432/helpdesk_db"
+
+# JWT
+JWT_SECRET="your-super-secret-key-change-this"
+JWT_REFRESH_SECRET="your-refresh-secret-change-this"
+JWT_EXPIRES_IN="15m"
+JWT_REFRESH_EXPIRES_IN="7d"
+
+# Server
+PORT=3001
+NODE_ENV="development"
+
+# Frontend URL (for CORS)
+FRONTEND_URL="http://localhost:5173"
+
+# File Upload
+UPLOAD_DIR="./uploads"
+MAX_FILE_SIZE=10485760