refactor: repartition server-side and client-side code

app/.server/service/prisma.ts

@@ -0,0 +1,28 @@
+import { PrismaBetterSQLite3 } from '@prisma/adapter-better-sqlite3';
+import { PrismaClient } from '@prisma/client';
+
+// 创建PrismaClient实例
+let prisma: PrismaClient;
+
+declare global {
+  var __db: PrismaClient | undefined;
+}
+
+const adapter = new PrismaBetterSQLite3({
+  url: 'file:data/upage.db',
+});
+
+// 在开发环境中使用全局变量，避免热重载时创建多个实例
+if (process.env.NODE_ENV === 'production') {
+  prisma = new PrismaClient({ adapter });
+} else {
+  if (!global.__db) {
+    global.__db = new PrismaClient({
+      log: ['query', 'error', 'warn'],
+      adapter,
+    });
+  }
+  prisma = global.__db;
+}
+
+export { prisma };