fix: resolve multiple runtime and build issues

- Fix network binding to allow external access (0.0.0.0)
- Upgrade to Node.js 20.x for Next.js 16 compatibility
- Fix next-auth v4 configuration and session handling
- Add Steam client secret for Steam OAuth provider
- Fix Prisma schema unique constraint syntax
- Fix database creation script for automated deployment
- Fix game search API to use new IStoreService endpoint
- Fix session auth in API routes for Steam linking
- Add TypeScript types for next-auth session

package.json

@@ -9,17 +9,24 @@
     "lint": "eslint"
   },
   "dependencies": {
+    "@prisma/client": "^6.19.2",
+    "bcryptjs": "^3.0.3",
     "next": "16.1.6",
+    "next-auth": "^4.24.13",
+    "next-auth-steam": "^0.4.0",
     "react": "19.2.3",
     "react-dom": "19.2.3"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
+    "@types/bcryptjs": "^2.4.6",
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "eslint": "^9",
     "eslint-config-next": "16.1.6",
+    "pg": "^8.18.0",
+    "prisma": "^6.19.2",
     "tailwindcss": "^4",
     "typescript": "^5"
   }