feat: add Warehouses + Integrations modules, /admin/configuracion page

- Schema v0.3: Warehouse + Integration models (db push applied)
- WarehousesModule: CRUD, set-default, multi-warehouse support
- IntegrationsModule: 26 keys across 7 groups (payment, notifications,
  customs, courier, marketplace, compliance, warehouse)
- AuthService: suite address pulled from default Warehouse in DB (env fallback)
- AuthModule: imports WarehousesModule
- Seed: creates default warehouse from WAREHOUSE_ADDRESS_* env vars
- Web: /admin/configuracion page (3 tabs: Bodegas, Integraciones, Estado APIs)
- Web: admin layout adds Configuracion nav link
- api.ts: warehouses + integrations client methods

apps/api/src/auth/auth.module.ts

@@ -5,6 +5,7 @@ import { ConfigModule, ConfigService } from "@nestjs/config";
 import { AuthController } from "./auth.controller";
 import { AuthService } from "./auth.service";
 import { JwtStrategy } from "./jwt.strategy";
+import { WarehousesModule } from "../warehouses/warehouses.module";
 
 @Module({
   imports: [
@@ -17,6 +18,7 @@ import { JwtStrategy } from "./jwt.strategy";
         signOptions: { expiresIn: config.get("JWT_EXPIRES_IN", "15m") },
       }),
     }),
+    WarehousesModule,
   ],
   controllers: [AuthController],
   providers: [AuthService, JwtStrategy],