feat(bd): V016 create Rubro table con SYSTEM_VERSIONING (CAT-001)

- dbo.Rubro: adjacency list, self-FK, soft-delete, temporal retention 10y
- Filtered unique index UQ_Rubro_ParentId_Nombre_Activo + covering IX_Rubro_ParentId_Activo
- Permission catalogo:rubros:gestionar seeded + assigned to admin role
- V016_ROLLBACK.sql: full reversal script
- RubrosOptions class (MaxDepth=10) + appsettings.json Rubros section
- services.Configure<RubrosOptions> registered in Infrastructure DI
- database/README.md updated with V013-V016 entries

src/api/SIGCM2.Infrastructure/DependencyInjection.cs

@@ -10,6 +10,7 @@ using SIGCM2.Application.Abstractions.Persistence;
 using SIGCM2.Application.Abstractions.Security;
 using SIGCM2.Application.Audit;
 using SIGCM2.Application.Auth;
+using SIGCM2.Application.Rubros;
 using SIGCM2.Infrastructure.Http;
 using SIGCM2.Infrastructure.Messaging;
 using SIGCM2.Infrastructure.Persistence;
@@ -77,6 +78,9 @@ public static class DependencyInjection
         services.AddHttpContextAccessor();
         services.AddScoped<IClientContext, ClientContext>();
 
+        // CAT-001: Rubros options (MaxDepth) — overridable via appsettings "Rubros".
+        services.Configure<RubrosOptions>(configuration.GetSection(RubrosOptions.SectionName));
+
         // UDT-010: Audit options (SanitizedKeys blacklist) — overridable via appsettings "Audit".
         services.Configure<AuditOptions>(configuration.GetSection(AuditOptions.SectionName));
         services.AddScoped<IAuditContext, SIGCM2.Infrastructure.Audit.AuditContext>();