chore(backend): migrate Prisma to v7 with prisma.config and direct migration URL

.gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf

.github/workflows/ci.yml

@@ -10,6 +10,10 @@ jobs:
   verify:
     runs-on: ubuntu-latest
 
+    env:
+      DIRECT_URL: postgresql://ci:ci@localhost:5432/ci
+      DATABASE_URL: postgresql://ci:ci@localhost:5432/ci
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -23,10 +27,6 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
-      - name: Prisma generate (backend)
-        run: npx prisma generate
-        working-directory: ./apps/backend
-
       - name: Lint
         run: npm run lint
 

.prettierrc

@@ -0,0 +1,3 @@
+{
+  "endOfLine": "auto"
+}

apps/backend/.env.example

@@ -7,6 +7,7 @@ CORS_ALLOWED_ORIGINS=http://localhost:5173,https://bodmat.github.io
 
 # Database
 DATABASE_URL=postgresql://postgres:postgres@localhost:5432/CoinRadar?schema=public
+DIRECT_URL=postgresql://postgres:postgres@localhost:5432/CoinRadar?schema=public
 
 # JWT
 # Use long random strings in real environments

apps/backend/package.json

@@ -26,7 +26,8 @@
     "tsx": "^4.20.6"
   },
   "dependencies": {
-    "@prisma/client": "6.19.0",
+    "@prisma/adapter-pg": "^7.8.0",
+    "@prisma/client": "^7.8.0",
     "@types/bcrypt": "^6.0.0",
     "@types/cors": "^2.8.19",
     "@types/express": "^5.0.5",
@@ -36,11 +37,9 @@
     "cors": "^2.8.5",
     "express": "^5.1.0",
     "jsonwebtoken": "^9.0.2",
-    "prisma": "6.19.0",
+    "pg": "^8.21.0",
+    "prisma": "^7.8.0",
     "typescript": "^5.9.3",
     "zod": "^4.1.13"
-  },
-  "prisma": {
-    "seed": "tsx ./prisma/seed.ts"
   }
 }

apps/backend/prisma.config.ts

@@ -0,0 +1,13 @@
+import "dotenv/config";
+import { defineConfig, env } from "prisma/config";
+
+export default defineConfig({
+  schema: "prisma/schema.prisma",
+  migrations: {
+    path: "prisma/migrations",
+    seed: "tsx prisma/seed.ts",
+  },
+  datasource: {
+    url: env("DIRECT_URL"),
+  },
+});

apps/backend/prisma/schema.prisma

@@ -10,7 +10,6 @@ generator client {
 
 datasource db {
   provider = "postgresql"
-  url      = env("DATABASE_URL")
 }
 
 enum BuyOrSell {

apps/backend/prisma/seed.ts

@@ -1,8 +1,13 @@
 import { PrismaClient, BuyOrSell } from "@prisma/client";
+import { PrismaPg } from "@prisma/adapter-pg";
 import { randomUUID } from "node:crypto";
 import bcrypt from "bcrypt";
 
-const prisma = new PrismaClient();
+const adapter = new PrismaPg({
+  connectionString: process.env.DATABASE_URL!,
+});
+
+const prisma = new PrismaClient({ adapter });
 
 const NOW = new Date("2026-05-20T12:00:00.000Z");
 const PIVOT_DATE = new Date("2026-03-01T00:00:00.000Z");

apps/backend/src/prisma.ts

@@ -1,5 +1,10 @@
 import { PrismaClient } from "@prisma/client";
+import { PrismaPg } from "@prisma/adapter-pg";
 
-const prisma = new PrismaClient();
+const adapter = new PrismaPg({
+  connectionString: process.env.DATABASE_URL!,
+});
+
+const prisma = new PrismaClient({ adapter });
 
 export default prisma;

apps/backend/tests/setup/globalSetup.cjs

@@ -30,18 +30,20 @@ module.exports = async () => {
   const backendRoot = path.resolve(__dirname, '../..');
 
   process.env.DATABASE_URL = databaseUrl;
+  process.env.DIRECT_URL = databaseUrl;
   process.env.JWT_SECRET = process.env.JWT_SECRET || 'test-access-secret';
   process.env.JWT_REFRESH_SECRET = process.env.JWT_REFRESH_SECRET || 'test-refresh-secret';
   process.env.FRONTEND_URL = process.env.FRONTEND_URL || 'http://localhost:5173';
   process.env.CORS_ALLOWED_ORIGINS = process.env.CORS_ALLOWED_ORIGINS || 'http://localhost:5173';
   process.env.COOKIE_SAME_SITE = process.env.COOKIE_SAME_SITE || 'lax';
   process.env.NODE_ENV = 'test';
 
-  execSync('npx prisma db push --skip-generate --schema=./prisma/schema.prisma', {
+  execSync('npx prisma db push --schema=./prisma/schema.prisma', {
     cwd: backendRoot,
     env: {
       ...process.env,
       DATABASE_URL: databaseUrl,
+      DIRECT_URL: databaseUrl,
     },
     stdio: 'inherit',
   });