- Arregla @require_auth, permisos, race conditions, locks de caja/stock
- Elimina N+1 en layaway, flotilla, dashboard y global_invoice
- Asegura folios atomicos para CFDI, ordenes de servicio y polizas
- Protege client_secret de MercadoLibre en backend
- Conecta botones/filtros de config, customers, accounting e invoicing
- Mejora accesibilidad (labels/aria-label) y estados de carga/vacio
- Limpia accounting.js obsoleto y consolida accounting.v9.js
- Actualiza cache busting a v32 y Service Worker a v32
- Documenta todo en docs/AUDIT_Y_MEJORAS_2026-06-15.md
Tests: 35 passed
Add full fleet management (Feature 13): database migration for fleet_vehicles,
fleet_maintenance_schedules, and fleet_maintenance_logs tables; REST API blueprint
with CRUD, scheduling, logging, alerts, and stats endpoints; frontend with tabbed
UI (vehicles grid, maintenance schedules, history, overdue alerts); sidebar nav entry.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
