feat: Integrar AuditService en todos los endpoints críticos

- Auth: login, logout, login_failed con registro automático
- Tickets: create, update, delete, assign con old/new values
- Users: create, update, delete con sanitización de passwords
- Stats: implementar top_users con JOIN a tabla users
- Schema: agregar índices compuestos para mejor performance
- Frontend: limpiar logs de debug en viewDetail
- Manejo de errores: audit logs no afectan flujo principal

backend/app/api/v1/endpoints/tickets.py

@@ -21,6 +21,7 @@ from app.models.comment import TicketComment
 from app.models.attachment import TicketAttachment
 from app.api.schemas.attachment import AttachmentResponse
 from app.core.file_handler import file_handler
+from app.services.audit_service import AuditService
 import uuid
 
 router = APIRouter()
@@ -143,6 +144,27 @@ async def create_ticket(
             await db.commit()
             await db.refresh(db_ticket)
             
+            # Registrar creación en auditoría
+            try:
+                await AuditService.log(
+                    db=db,
+                    tenant_id=current_user.tenant_id,
+                    user_id=current_user.id,
+                    action="ticket.create",
+                    resource_type="ticket",
+                    resource_id=db_ticket.id,
+                    new_values={
+                        "ticket_number": db_ticket.ticket_number,
+                        "subject": db_ticket.subject,
+                        "priority": db_ticket.priority.value,
+                        "status": db_ticket.status.value
+                    }
+                )
+                await db.commit()
+            except Exception as e:
+                # No fallar si falla el audit log
+                pass
+            
             # ✅ Éxito - retornar ticket creado
             return {
                 "id": str(db_ticket.id),
@@ -501,6 +523,15 @@ async def update_ticket(
             detail=f"Ticket {ticket_id} not found"
         )
     
+    # Guardar valores anteriores para audit
+    old_values = {
+        "subject": db_ticket.subject,
+        "description": db_ticket.description,
+        "status": db_ticket.status.value,
+        "priority": db_ticket.priority.value,
+        "assigned_to": str(db_ticket.assigned_to) if db_ticket.assigned_to else None
+    }
+    
     try:
         update_data = ticket_update.dict(exclude_unset=True)
         
@@ -519,6 +550,34 @@ async def update_ticket(
         await db.commit()
         await db.refresh(db_ticket)
         
+        # Registrar actualización en auditoría
+        try:
+            new_values = {
+                "subject": db_ticket.subject,
+                "description": db_ticket.description,
+                "status": db_ticket.status.value,
+                "priority": db_ticket.priority.value,
+                "assigned_to": str(db_ticket.assigned_to) if db_ticket.assigned_to else None
+            }
+            
+            # Si cambió assigned_to, registrar como acción de asignación
+            action = "ticket.assign" if old_values["assigned_to"] != new_values["assigned_to"] else "ticket.update"
+            
+            await AuditService.log(
+                db=db,
+                tenant_id=current_user.tenant_id,
+                user_id=current_user.id,
+                action=action,
+                resource_type="ticket",
+                resource_id=db_ticket.id,
+                old_values=old_values,
+                new_values=new_values
+            )
+            await db.commit()
+        except Exception as e:
+            # No fallar si falla el audit log
+            pass
+        
         # ✅ CORREGIDO: Usar affected_system_id
         return {
             "id": str(db_ticket.id),
@@ -787,9 +846,33 @@ async def delete_ticket(
             detail=f"Ticket {ticket_id} not found"
         )
     
+    # Guardar datos del ticket antes de eliminar para audit
+    old_values = {
+        "ticket_number": db_ticket.ticket_number,
+        "subject": db_ticket.subject,
+        "status": db_ticket.status.value,
+        "priority": db_ticket.priority.value
+    }
+    
     await db.delete(db_ticket)
     await db.commit()
     
+    # Registrar eliminación en auditoría
+    try:
+        await AuditService.log(
+            db=db,
+            tenant_id=current_user.tenant_id,
+            user_id=current_user.id,
+            action="ticket.delete",
+            resource_type="ticket",
+            resource_id=ticket_uuid,
+            old_values=old_values
+        )
+        await db.commit()
+    except Exception as e:
+        # No fallar si falla el audit log
+        pass
+    
     return {"message": "Ticket deleted successfully"}
 
 # ===================================