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'));
 });
 

frontend/package-lock.json

@@ -13,6 +13,7 @@
       },
       "devDependencies": {
         "@eslint/js": "^10.0.1",
+        "@playwright/test": "^1.60.0",
         "@types/node": "^24.12.3",
         "@types/react": "^19.2.14",
         "@types/react-dom": "^19.2.3",
@@ -22,6 +23,7 @@
         "eslint-plugin-react-hooks": "^7.1.1",
         "eslint-plugin-react-refresh": "^0.5.2",
         "globals": "^17.6.0",
+        "playwright": "^1.60.0",
         "postcss": "^8.5.15",
         "tailwindcss": "^4.3.0",
         "typescript": "~6.0.2",
@@ -576,6 +578,22 @@
         "url": "https://github.com/sponsors/Boshen"
       }
     },
+    "node_modules/@playwright/test": {
+      "version": "1.60.0",
+      "resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.60.0.tgz",
+      "integrity": "sha512-O71yZIbAh/PxDMNGns37GHBIfrVkEVyn+AXyIa5dOTfb4/xNvRWV+Vv/NMbNCtODB/pO7vLlF2OTmMVLhmr7Ag==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright": "1.60.0"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@rolldown/binding-android-arm64": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/@rolldown/binding-android-arm64/-/binding-android-arm64-1.0.1.tgz",
@@ -2378,6 +2396,53 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
+    "node_modules/playwright": {
+      "version": "1.60.0",
+      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.60.0.tgz",
+      "integrity": "sha512-hheHdokM8cdqCb0lcE3s+zT4t4W+vvjpGxsZlDnikarzx8tSzMebh3UiFtgqwFwnTnjYQcsyMF8ei2mCO/tpeA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright-core": "1.60.0"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.60.0",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.60.0.tgz",
+      "integrity": "sha512-9bW6zvX/m0lEbgTKJ6YppOKx8H3VOPBMOCFh2irXFOT4BbHgrx5hPjwJYLT40Lu+4qtD36qKc/Hn56StUW57IA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/playwright/node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/postcss": {
       "version": "8.5.15",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.15.tgz",

frontend/package.json

@@ -15,6 +15,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^10.0.1",
+    "@playwright/test": "^1.60.0",
     "@types/node": "^24.12.3",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
@@ -24,6 +25,7 @@
     "eslint-plugin-react-hooks": "^7.1.1",
     "eslint-plugin-react-refresh": "^0.5.2",
     "globals": "^17.6.0",
+    "playwright": "^1.60.0",
     "postcss": "^8.5.15",
     "tailwindcss": "^4.3.0",
     "typescript": "~6.0.2",

frontend/vite.config.ts

@@ -4,4 +4,9 @@ import react from '@vitejs/plugin-react'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  server: {
+    proxy: {
+      '/api': 'http://localhost:3000'
+    }
+  }
 })