Upgrade Prisma to v7

prisma/schema.prisma

@@ -1,13 +1,12 @@
 generator client {
-  provider      = "prisma-client-js"
-  // Include both OpenSSL variants to support host build (OpenSSL 3.x)
-  // and container runtime (Debian bullseye, OpenSSL 1.1.x)
-  binaryTargets = ["native", "debian-openssl-1.1.x", "debian-openssl-3.0.x"]
+  provider     = "prisma-client"
+  output       = "../src/generated/prisma"
+  runtime      = "nodejs"
+  moduleFormat = "esm"
 }
 
 datasource db {
   provider = "sqlite"
-  url      = env("DATABASE_URL")
 }
 
 enum UserRole {