feat: implement Prisma client and standalone database initialization script

lib/db.ts

@@ -1,26 +1,17 @@
 import { PrismaClient } from '@prisma/client';
 import { PrismaBetterSqlite3 } from '@prisma/adapter-better-sqlite3';
-import { initializeDatabase } from './initDb';
 
 const globalForPrisma = global as unknown as { prisma: PrismaClient };
 
+/**
+ * Creates the Prisma client.
+ * Schema initialization is handled by scripts/init-db.mjs (run at startup).
+ */
 const createPrismaClient = () => {
-  try {
-    const dbUrl = process.env.DATABASE_URL || 'file:/app/prisma/dev.db';
-    console.log(`[DB] Connecting to: ${dbUrl}`);
-
-    // Ensure schema exists before creating the Prisma client
-    initializeDatabase();
-
-    const adapter = new PrismaBetterSqlite3({ url: dbUrl });
-    const client = new PrismaClient({ adapter });
-
-    console.log('[DB] Prisma client ready.');
-    return client;
-  } catch (error) {
-    console.error('[DB] Critical initialization failure:', error);
-    throw error;
-  }
+  const dbUrl = process.env.DATABASE_URL || 'file:/app/prisma/dev.db';
+  console.log(`[DB] Connecting to: ${dbUrl}`);
+  const adapter = new PrismaBetterSqlite3({ url: dbUrl });
+  return new PrismaClient({ adapter });
 };
 
 export const prisma = globalForPrisma.prisma || createPrismaClient();