feat: API Gateway (Express 5 + Prisma + Monday) y conexion de apps al API

- api-gateway: servicio Monday (retry 429/complejidad, paginacion cursor,
  column IDs por titulo), endpoints unidades/cotizaciones/clientes/planes,
  webhook con handshake challenge, Prisma SQLite dev, 55 tests
- cotizador: inventario desde /api/unidades con fallback a seed
- alta-clientes: POST /api/clientes + upload multipart de documentos
- cobranza: persistencia via API con respaldo offline en localStorage
- .env.example con board IDs del workspace Frasa-CAS

api-gateway/prisma/migrations/20260821224530_init/migration.sql

@@ -0,0 +1,121 @@
+-- CreateTable
+CREATE TABLE "Cotizacion" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "unidadCodigo" TEXT NOT NULL,
+    "clienteNombre" TEXT NOT NULL,
+    "clienteEmail" TEXT,
+    "clienteTelefono" TEXT,
+    "tipoPropuesta" TEXT NOT NULL,
+    "acabados" BOOLEAN NOT NULL,
+    "apartado" REAL NOT NULL,
+    "descuento" REAL NOT NULL,
+    "precioLista" REAL NOT NULL,
+    "precioFinal" REAL NOT NULL,
+    "enganche" REAL NOT NULL,
+    "numMensualidades" INTEGER NOT NULL,
+    "mensualidad" REAL,
+    "pagoFinal" REAL NOT NULL,
+    "mondayItemId" TEXT,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- CreateTable
+CREATE TABLE "Cliente" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "nombreCompleto" TEXT NOT NULL,
+    "curp" TEXT NOT NULL,
+    "rfc" TEXT NOT NULL,
+    "email" TEXT,
+    "celular" TEXT,
+    "proyecto" TEXT NOT NULL,
+    "unidadCodigo" TEXT,
+    "payloadJson" TEXT NOT NULL,
+    "firmaPng" TEXT,
+    "mondayContactoId" TEXT,
+    "mondayApartadoId" TEXT,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- CreateTable
+CREATE TABLE "Documento" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "clienteId" TEXT NOT NULL,
+    "tipo" TEXT NOT NULL,
+    "nombreArchivo" TEXT NOT NULL,
+    "ruta" TEXT NOT NULL,
+    "mime" TEXT NOT NULL,
+    "tamano" INTEGER NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT "Documento_clienteId_fkey" FOREIGN KEY ("clienteId") REFERENCES "Cliente" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "PlanPago" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "ventaRef" TEXT,
+    "clienteNombre" TEXT NOT NULL,
+    "clienteTelefono" TEXT,
+    "unidadCodigo" TEXT NOT NULL,
+    "proyecto" TEXT NOT NULL,
+    "fechaInicio" DATETIME NOT NULL,
+    "engancheTotal" REAL NOT NULL,
+    "numPagos" INTEGER NOT NULL,
+    "mensualidad" REAL NOT NULL,
+    "tasaMoraMensual" REAL NOT NULL DEFAULT 0,
+    "status" TEXT NOT NULL DEFAULT 'ACTIVO',
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- CreateTable
+CREATE TABLE "Pago" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "planId" TEXT NOT NULL,
+    "numPago" INTEGER NOT NULL,
+    "fechaVencimiento" DATETIME NOT NULL,
+    "monto" REAL NOT NULL,
+    "montoPagado" REAL NOT NULL DEFAULT 0,
+    CONSTRAINT "Pago_planId_fkey" FOREIGN KEY ("planId") REFERENCES "PlanPago" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "AplicacionPago" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "pagoId" TEXT NOT NULL,
+    "fechaPago" DATETIME NOT NULL,
+    "monto" REAL NOT NULL,
+    "referencia" TEXT NOT NULL,
+    CONSTRAINT "AplicacionPago_pagoId_fkey" FOREIGN KEY ("pagoId") REFERENCES "Pago" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "NotaPlan" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "planId" TEXT NOT NULL,
+    "fecha" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "texto" TEXT NOT NULL,
+    CONSTRAINT "NotaPlan_planId_fkey" FOREIGN KEY ("planId") REFERENCES "PlanPago" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateIndex
+CREATE INDEX "Cotizacion_unidadCodigo_idx" ON "Cotizacion"("unidadCodigo");
+
+-- CreateIndex
+CREATE INDEX "Cliente_curp_idx" ON "Cliente"("curp");
+
+-- CreateIndex
+CREATE INDEX "Documento_clienteId_idx" ON "Documento"("clienteId");
+
+-- CreateIndex
+CREATE INDEX "PlanPago_unidadCodigo_idx" ON "PlanPago"("unidadCodigo");
+
+-- CreateIndex
+CREATE INDEX "Pago_planId_idx" ON "Pago"("planId");
+
+-- CreateIndex
+CREATE INDEX "Pago_fechaVencimiento_idx" ON "Pago"("fechaVencimiento");
+
+-- CreateIndex
+CREATE INDEX "AplicacionPago_pagoId_idx" ON "AplicacionPago"("pagoId");
+
+-- CreateIndex
+CREATE INDEX "NotaPlan_planId_idx" ON "NotaPlan"("planId");

api-gateway/prisma/migrations/migration_lock.toml

@@ -0,0 +1,3 @@
+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "sqlite"