fix: exclude prisma.config.ts from TS compilation, use datasource.url

prisma.config.ts is a Prisma CLI config file, not part of the Next.js
app — exclude it from tsconfig to prevent type errors. Also revert the
migrate.adapter block (not a valid PrismaConfig key in 7.5) back to
datasource.url which is the correct CLI config for db push.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

prisma.config.ts

@@ -1,16 +1,9 @@
 import "dotenv/config";
-import { defineConfig } from "prisma/config";
-import { createClient } from "@libsql/client";
-import { PrismaLibSql } from "@prisma/adapter-libsql";
+import { defineConfig, env } from "prisma/config";
 
 export default defineConfig({
   schema: "prisma/schema.prisma",
-  migrate: {
-    adapter: async () => {
-      const libsql = createClient({
-        url: process.env.DATABASE_URL ?? "file:./dev.db",
-      });
-      return new PrismaLibSql(libsql);
-    },
+  datasource: {
+    url: env("DATABASE_URL") ?? "file:./dev.db",
   },
 });

tsconfig.json

@@ -30,5 +30,5 @@
     ".next/dev/types/**/*.ts",
     "**/*.mts"
   ],
-  "exclude": ["node_modules"]
+  "exclude": ["node_modules", "prisma.config.ts"]
 }