Fix: Stable Prisma 6 setup, database seeding, and routing improvements

backend/package.json

@@ -13,16 +13,19 @@
   "license": "ISC",
   "type": "commonjs",
   "dependencies": {
-    "@prisma/client": "^7.8.0",
+    "@prisma/adapter-better-sqlite3": "^7.8.0",
+    "@prisma/client": "^6.19.3",
+    "better-sqlite3": "^12.10.0",
     "cors": "^2.8.6",
     "dotenv": "^17.4.2",
     "express": "^5.2.1"
   },
   "devDependencies": {
+    "@types/better-sqlite3": "^7.6.13",
     "@types/cors": "^2.8.19",
     "@types/express": "^5.0.6",
     "@types/node": "^25.9.1",
-    "prisma": "^7.8.0",
+    "prisma": "^6.19.3",
     "ts-node-dev": "^2.0.0",
     "typescript": "^6.0.3"
   }

backend/prisma.config.ts

@@ -1,14 +0,0 @@
-// This file was generated by Prisma, and assumes you have installed the following:
-// npm install --save-dev prisma dotenv
-import "dotenv/config";
-import { defineConfig } from "prisma/config";
-
-export default defineConfig({
-  schema: "prisma/schema.prisma",
-  migrations: {
-    path: "prisma/migrations",
-  },
-  datasource: {
-    url: process.env["DATABASE_URL"],
-  },
-});

backend/prisma/schema.prisma

@@ -7,6 +7,7 @@ generator client {
 
 datasource db {
   provider = "sqlite"
+  url      = env("DATABASE_URL")
 }
 
 model StockItem {

backend/src/server.ts

@@ -159,8 +159,7 @@ app.post('/api/reset', async (req, res) => {
 const frontendPath = path.join(__dirname, '../../frontend/dist');
 app.use(express.static(frontendPath));
 
-app.get('*', (req, res) => {
-  if (req.path.startsWith('/api')) return;
+app.get(/^\/(?!api).*/, (req, res) => {
   res.sendFile(path.join(frontendPath, 'index.html'));
 });