feat: switch panel database to sqlite

src/lib/prisma.ts

@@ -1,10 +1,12 @@
 import { PrismaClient, type Prisma } from "@prisma/client";
-import { PrismaPg } from "@prisma/adapter-pg";
+import { PrismaBetterSqlite3 } from "@prisma/adapter-better-sqlite3";
 
 const globalForPrisma = globalThis as unknown as { prisma: PrismaClient };
 
 function createClient() {
-  const adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL });
+  const adapter = new PrismaBetterSqlite3({
+    url: process.env.DATABASE_URL || "file:./storage/jboard.db",
+  });
   return new PrismaClient({ adapter });
 }