✅ FASE 4 COMPLETADA: Pagos y Monetización con MercadoPago

Implementados 4 módulos con agent swarm:

1. MERCADOPAGO INTEGRADO
   - SDK oficial de MercadoPago
   - Crear preferencias de pago
   - Webhooks para notificaciones
   - Reembolsos y cancelaciones
   - Estados: PENDING, PROCESSING, COMPLETED, REFUNDED

2. SISTEMA DE BONOS Y PACKS
   - Pack 5, Pack 10, Pack Mensual
   - Compra online con MP
   - Uso FIFO automático
   - Control de expiración
   - Aplicación en reservas

3. SUSCRIPCIONES/MEMBRESÍAS
   - Planes: Básico, Premium, Anual VIP
   - Beneficios: descuentos, reservas gratis, prioridad
   - Cobro recurrente vía MP
   - Estados: ACTIVE, PAUSED, CANCELLED
   - Aplicación automática en reservas

4. CLASES CON PROFESORES
   - Registro de coaches con verificación
   - Tipos: Individual, Grupal, Clínica
   - Horarios y disponibilidad
   - Reservas con pago integrado
   - Sistema de reseñas

Endpoints nuevos:
- /payments/* - Pagos MercadoPago
- /bonus-packs/*, /bonuses/* - Bonos
- /subscription-plans/*, /subscriptions/* - Suscripciones
- /coaches/* - Profesores
- /classes/*, /class-enrollments/* - Clases

Variables de entorno:
- MERCADOPAGO_ACCESS_TOKEN
- MERCADOPAGO_PUBLIC_KEY
- MERCADOPAGO_WEBHOOK_SECRET

Datos de prueba:
- 3 Bonus Packs
- 3 Planes de suscripción
- 1 Coach verificado (admin)
- 3 Clases disponibles

backend/prisma/migrations/20260131084900_add_coach_class_models/migration.sql

@@ -0,0 +1,57 @@
+-- CreateTable
+CREATE TABLE "subscription_plans" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "name" TEXT NOT NULL,
+    "description" TEXT,
+    "type" TEXT NOT NULL,
+    "price" INTEGER NOT NULL,
+    "features" TEXT,
+    "benefits" TEXT NOT NULL,
+    "mercadoPagoPlanId" TEXT,
+    "isActive" BOOLEAN NOT NULL DEFAULT true,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL
+);
+
+-- CreateTable
+CREATE TABLE "user_subscriptions" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "userId" TEXT NOT NULL,
+    "planId" TEXT NOT NULL,
+    "status" TEXT NOT NULL DEFAULT 'PENDING',
+    "startDate" DATETIME,
+    "endDate" DATETIME,
+    "currentPeriodStart" DATETIME,
+    "currentPeriodEnd" DATETIME,
+    "cancelAtPeriodEnd" BOOLEAN NOT NULL DEFAULT false,
+    "mercadoPagoSubscriptionId" TEXT,
+    "paymentMethodId" TEXT,
+    "lastPaymentDate" DATETIME,
+    "nextPaymentDate" DATETIME,
+    "freeBookingsUsed" INTEGER NOT NULL DEFAULT 0,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "user_subscriptions_userId_fkey" FOREIGN KEY ("userId") REFERENCES "users" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT "user_subscriptions_planId_fkey" FOREIGN KEY ("planId") REFERENCES "subscription_plans" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- CreateIndex
+CREATE INDEX "subscription_plans_type_idx" ON "subscription_plans"("type");
+
+-- CreateIndex
+CREATE INDEX "subscription_plans_isActive_idx" ON "subscription_plans"("isActive");
+
+-- CreateIndex
+CREATE INDEX "user_subscriptions_userId_idx" ON "user_subscriptions"("userId");
+
+-- CreateIndex
+CREATE INDEX "user_subscriptions_planId_idx" ON "user_subscriptions"("planId");
+
+-- CreateIndex
+CREATE INDEX "user_subscriptions_status_idx" ON "user_subscriptions"("status");
+
+-- CreateIndex
+CREATE INDEX "user_subscriptions_mercadoPagoSubscriptionId_idx" ON "user_subscriptions"("mercadoPagoSubscriptionId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "user_subscriptions_userId_status_key" ON "user_subscriptions"("userId", "status");