Initial marketplace implementation

Full-stack marketplace for buying/selling second-hand items.
React 19 + TypeScript + Tailwind CSS v4 frontend with 17 screens,
Express + Prisma + Socket.io backend, Stripe payments, JWT auth.

Deployed at https://marketplace.173.212.212.157.sslip.io/

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

server/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "marketplace-server",
+  "private": true,
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "tsx watch src/index.ts",
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "db:generate": "prisma generate",
+    "db:push": "prisma db push",
+    "db:migrate": "prisma migrate dev",
+    "db:seed": "tsx prisma/seed.ts",
+    "db:studio": "prisma studio"
+  },
+  "dependencies": {
+    "express": "^4.21.0",
+    "@prisma/client": "^6.2.0",
+    "socket.io": "^4.8.0",
+    "bcryptjs": "^2.4.3",
+    "jsonwebtoken": "^9.0.2",
+    "zod": "^3.24.0",
+    "cors": "^2.8.5",
+    "multer": "^1.4.5-lts.1",
+    "stripe": "^17.5.0",
+    "helmet": "^8.0.0",
+    "express-rate-limit": "^7.5.0",
+    "cookie-parser": "^1.4.7"
+  },
+  "devDependencies": {
+    "@types/express": "^4.17.21",
+    "@types/bcryptjs": "^2.4.6",
+    "@types/jsonwebtoken": "^9.0.7",
+    "@types/cors": "^2.8.17",
+    "@types/multer": "^1.4.12",
+    "@types/cookie-parser": "^1.4.7",
+    "@types/node": "^22.10.0",
+    "prisma": "^6.2.0",
+    "tsx": "^4.19.0",
+    "typescript": "~5.7.0"
+  }
+}