fix(prisma): use PostgreSQL adapter for Prisma v7 client connection

package.json

@@ -22,6 +22,7 @@
   },
   "dependencies": {
     "@hookform/resolvers": "^5.2.2",
+    "@prisma/adapter-pg": "^7.6.0",
     "@prisma/client": "^7.6.0",
     "@types/bcryptjs": "^2.4.6",
     "bcrypt": "^6.0.0",
@@ -30,6 +31,7 @@
     "jose": "^6.2.2",
     "next": "^16.2.1",
     "papaparse": "^5.5.3",
+    "pg": "^8.20.0",
     "prisma": "^7.6.0",
     "react": "^19.2.4",
     "react-dom": "^19.2.4",
@@ -45,6 +47,7 @@
     "@types/bcrypt": "^6.0.0",
     "@types/node": "^20",
     "@types/papaparse": "^5.5.2",
+    "@types/pg": "^8.20.0",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^6.0.1",