document prisma v7 config usage in database skill

Co-authored-by: Kent C. Dodds <me+github@kentcdodds.com>

Author: cursoragent

docs/skills/epic-database/SKILL.md

@@ -90,10 +90,25 @@ generator client {
 
 datasource db {
   provider = "sqlite"
-  url      = env("DATABASE_URL")
 }
 ```
 
+```ts
+// prisma.config.ts
+import 'dotenv/config'
+import { defineConfig, env } from 'prisma/config'
+
+export default defineConfig({
+	schema: 'prisma/schema.prisma',
+	datasource: {
+		url: env('DATABASE_URL'),
+	},
+	migrations: {
+		seed: 'tsx prisma/seed.ts',
+	},
+})
+```
+
 **Basic model:**
 
 ```prisma