diff --git a/apps/web/src/lib/server/db.ts b/apps/web/src/lib/server/db.ts
index 8077e66..dc8cfa4 100644
--- a/apps/web/src/lib/server/db.ts
+++ b/apps/web/src/lib/server/db.ts
@@ -1,9 +1,8 @@
-import { Database } from 'bun:sqlite';
 import { mkdirSync } from 'fs';
 import { dirname } from 'path';
 import { resolveDbAbsolutePath } from './env';
 
-function applyDefaultPragmas(instance: Database): void {
+function applyDefaultPragmas(instance: any): void {
   try {
     instance.exec(`PRAGMA busy_timeout = 5000;`);
     // Intentar activar WAL (si no es soportado, SQLite devolverá 'memory' u otro modo)
@@ -19,8 +18,9 @@ function applyDefaultPragmas(instance: Database): void {
 
 /**
  * Abre la BD compartida sin ejecutar migraciones (las realiza el proceso del bot).
+ * Nota: uso de import dinámico de 'bun:sqlite' para que el build con Node no falle.
  */
-export function openDb(filename: string = 'tasks.db'): Database {
+async function openDb(filename: string = 'tasks.db'): Promise<any> {
   const absolutePath = resolveDbAbsolutePath(filename);
 
   // Crear directorio padre si no existe
@@ -30,10 +30,19 @@ export function openDb(filename: string = 'tasks.db'): Database {
     if (err?.code !== 'EEXIST') throw err;
   }
 
+  const { Database } = await import('bun:sqlite');
   const instance = new Database(absolutePath);
   applyDefaultPragmas(instance);
   return instance;
 }
 
-// Instancia por defecto
-export const db = openDb();
+let _db: any | null = null;
+
+/**
+ * Devuelve una única instancia compartida (lazy) de la BD.
+ */
+export async function getDb(filename: string = 'tasks.db'): Promise<any> {
+  if (_db) return _db;
+  _db = await openDb(filename);
+  return _db;
+}
diff --git a/apps/web/src/routes/login/+server.ts b/apps/web/src/routes/login/+server.ts
index 2395b7a..6f6fba2 100644
--- a/apps/web/src/routes/login/+server.ts
+++ b/apps/web/src/routes/login/+server.ts
@@ -1,6 +1,6 @@
 import type { RequestHandler } from './$types';
 import { redirect } from '@sveltejs/kit';
-import { db } from '$lib/server/db';
+import { getDb } from '$lib/server/db';
 import { sha256Hex, randomTokenBase64Url } from '$lib/server/crypto';
 import { sessionIdleTtlMs, isProd } from '$lib/server/env';
 
@@ -18,6 +18,8 @@ export const GET: RequestHandler = async (event) => {
   const tokenHash = await sha256Hex(token);
   const nowIso = toIsoSql(new Date());
 
+  const db = await getDb();
+
   // Intentar canjear el token: marcarlo como usado si está vigente y no usado
   const res = db
     .prepare(
diff --git a/apps/web/vite.config.ts b/apps/web/vite.config.ts
index bbf8c7d..245ce0c 100644
--- a/apps/web/vite.config.ts
+++ b/apps/web/vite.config.ts
@@ -2,5 +2,13 @@ import { sveltekit } from '@sveltejs/kit/vite';
 import { defineConfig } from 'vite';
 
 export default defineConfig({
-	plugins: [sveltekit()]
+	plugins: [sveltekit()],
+	ssr: {
+		// Evita que Node intente resolver el esquema 'bun:' durante el build SSR
+		external: ['bun:sqlite']
+	},
+	optimizeDeps: {
+		// No prebundlear 'bun:sqlite' en dev
+		exclude: ['bun:sqlite']
+	}
 });