[MCH] docs: Update BACKEND_INVENTORY with settings and exports modules

Add Sprint 8 modules to backend inventory:
- settings: Tenant configuration API (5 endpoints)
- exports: PDF/Excel report generation (4 endpoints)

Update totals: 21 modules, 24 controllers, 28 services, 42 entities, 92 DTOs

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

orchestration/inventarios/BACKEND_INVENTORY.yml

@@ -1,8 +1,8 @@
 # BACKEND INVENTORY - MiChangarrito
-# Version: 2.2.1
-# Ultima actualizacion: 2026-01-10
+# Version: 2.3.0
+# Ultima actualizacion: 2026-01-20
 # Sistema: SIMCO v3.8.0 + CAPVED
-# Actualizado: Sincronizacion con desarrollo - 17 modulos completos
+# Actualizado: Sprint 8 - Settings y Exports modules
 
 metadata:
   proyecto: "michangarrito"
@@ -11,7 +11,7 @@ metadata:
   lenguaje: "TypeScript"
   puerto: 3141
   estado: "100% modulos completados"
-  actualizado: "2026-01-10"
+  actualizado: "2026-01-20"
   actualizado_por: "Agente Orquestador"
 
 # ============================================================================
@@ -33,11 +33,11 @@ configuracion:
 # ============================================================================
 
 resumen:
-  total_modulos: 19
-  total_controllers: 22
-  total_services: 26
-  total_entities: 41
-  total_dtos: 78
+  total_modulos: 21
+  total_controllers: 24
+  total_services: 28
+  total_entities: 42
+  total_dtos: 92
   total_guards: 3
   total_strategies: 1
   arquitectura: "modular"
@@ -49,6 +49,8 @@ resumen:
     - reports (Reportes y analítica)
     - templates (Templates de productos - MCH-007)
     - onboarding (Onboarding inteligente - MCH-006)
+    - settings (Configuracion del tenant - Sprint 8)
+    - exports (Exportacion PDF/Excel - Sprint 8)
 
 # ============================================================================
 # ESTRUCTURA DE CARPETAS
@@ -497,6 +499,67 @@ modulos:
       - GET /templates/:id
       - GET /templates/stats/summary
 
+  - nombre: settings
+    ruta: "modules/settings"
+    descripcion: "Configuracion del tenant/negocio (Sprint 8)"
+    estado: completado
+    entities:
+      - TenantSettings (entities/tenant-settings.entity.ts)
+    controllers:
+      - SettingsController (settings.controller.ts)
+    services:
+      - SettingsService (settings.service.ts)
+    dtos:
+      - UpdateSettingsDto
+      - BusinessSettingsDto
+      - FiadoSettingsDto
+      - WhatsAppSettingsDto
+      - NotificationSettingsDto
+      - SettingsResponseDto
+      - WhatsAppStatusResponseDto
+      - SubscriptionInfoResponseDto
+      - TestWhatsAppResponseDto
+    endpoints:
+      - GET /v1/settings - Obtener configuracion del tenant
+      - PATCH /v1/settings - Actualizar configuracion del tenant
+      - GET /v1/settings/whatsapp - Obtener estado de WhatsApp
+      - POST /v1/settings/whatsapp/test - Probar conexion de WhatsApp
+      - GET /v1/settings/subscription - Obtener informacion de suscripcion
+    dependencias:
+      - auth.module (JwtAuthGuard)
+      - subscriptions.module (Plan, Subscription, TokenBalance)
+      - integrations.module (TenantWhatsAppNumber)
+
+  - nombre: exports
+    ruta: "modules/exports"
+    descripcion: "Exportacion de reportes PDF/Excel (Sprint 8)"
+    estado: completado
+    controllers:
+      - ExportsController (exports.controller.ts)
+    services:
+      - ExportsService (exports.service.ts)
+    dtos:
+      - ExportFormat (enum)
+      - ExportFilterDto
+      - SalesExportFilterDto
+      - InventoryExportFilterDto
+      - FiadosExportFilterDto
+      - MovementsExportFilterDto
+    endpoints:
+      - GET /v1/exports/sales/:format - Exportar reporte de ventas (pdf/xlsx)
+      - GET /v1/exports/inventory/:format - Exportar reporte de inventario (pdf/xlsx)
+      - GET /v1/exports/fiados/:format - Exportar reporte de fiados (pdf/xlsx)
+      - GET /v1/exports/movements/:format - Exportar movimientos de inventario (pdf/xlsx)
+    dependencias:
+      - auth.module (JwtAuthGuard)
+      - sales.module (Sale)
+      - products.module (Product)
+      - customers.module (Fiado, Customer)
+      - inventory.module (InventoryMovement)
+      - categories.module (Category)
+      - pdfkit (generacion PDF)
+      - exceljs (generacion Excel)
+
 # ============================================================================
 # SHARED
 # ============================================================================
@@ -596,3 +659,5 @@ notas:
   - "Validacion global con ValidationPipe (whitelist, transform)"
   - "Helmet para seguridad de headers HTTP"
   - "CORS configurable via CORS_ORIGIN"
+  - "Sprint 8: Modulo settings para configuracion del tenant"
+  - "Sprint 8: Modulo exports para reportes PDF/Excel"