Add datasource property to Prisma config for migrate/db push support

prisma.config.ts

@@ -1,13 +1,20 @@
 import 'dotenv/config'
+import path from 'path'
 import { defineConfig } from 'prisma/config'
 
+// Resolve database path
+const dbPath = process.env.DATABASE_URL ?? `file:${path.join(process.cwd(), 'data', 'pve-scripts.db')}`
+
 export default defineConfig({
   schema: 'prisma/schema.prisma',
+  datasource: {
+    url: dbPath,
+  },
   // @ts-expect-error - Prisma 7 config types are incomplete
   studio: {
     adapter: async () => {
       const { PrismaBetterSqlite3 } = await import('@prisma/adapter-better-sqlite3')
-      return new PrismaBetterSqlite3({ url: process.env.DATABASE_URL! })
+      return new PrismaBetterSqlite3({ url: dbPath })
     },
   },
 })