Usar AnyPgColumn en vez de any para la referencia forward de plan_id

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

mvp/b2c/src/db/schema.ts

@@ -11,6 +11,7 @@ import {
   index,
   doublePrecision,
   uniqueIndex,
+  type AnyPgColumn,
 } from 'drizzle-orm/pg-core';
 
 // Estado comercial del lead — RF-D-03. Lo que el reformista gestiona a mano.
@@ -73,7 +74,7 @@ export const tenants = pgTable('tenants', {
   logoUrl: text('logo_url'),
   provincia: text('provincia'),
   whatsappBusiness: text('whatsapp_business'),
-  planId: uuid('plan_id').references((): any => plans.id),
+  planId: uuid('plan_id').references((): AnyPgColumn => plans.id),
   subscriptionStatus: subscriptionStatus('subscription_status').notNull().default('trial'),
   trialEndsAt: timestamp('trial_ends_at', { withTimezone: true }),
   stripeCustomerId: text('stripe_customer_id'),