Backend v1.0.71:

- Implementado soft delete para preguntas
- Nuevas columnas: is_deleted (boolean), updated_at (timestamp)
- Migración SQL: add_soft_delete_to_questions.sql
- Endpoint DELETE marca preguntas como eliminadas en lugar de borrarlas
- GET /api/checklists/{id} filtra preguntas eliminadas (is_deleted=false)
- Validación de subpreguntas activas antes de eliminar
- Índices agregados para optimizar queries
- Mantiene integridad de respuestas históricas y PDFs generados
- Permite limpiar checklists sin afectar inspecciones completadas

backend/app/main.py

@@ -204,7 +204,7 @@ def send_completed_inspection_to_n8n(inspection, db):
         # No lanzamos excepción para no interrumpir el flujo normal
 
 
-BACKEND_VERSION = "1.0.69"
+BACKEND_VERSION = "1.0.71"
 app = FastAPI(title="Checklist Inteligente API", version=BACKEND_VERSION)
 
 # S3/MinIO configuration
@@ -780,13 +780,17 @@ def get_checklists(
 
 @app.get("/api/checklists/{checklist_id}", response_model=schemas.ChecklistWithQuestions)
 def get_checklist(checklist_id: int, db: Session = Depends(get_db)):
-    checklist = db.query(models.Checklist).options(
-        joinedload(models.Checklist.questions)
-    ).filter(models.Checklist.id == checklist_id).first()
+    checklist = db.query(models.Checklist).filter(models.Checklist.id == checklist_id).first()
     
     if not checklist:
         raise HTTPException(status_code=404, detail="Checklist no encontrado")
     
+    # Cargar solo preguntas NO eliminadas
+    checklist.questions = db.query(models.Question).filter(
+        models.Question.checklist_id == checklist_id,
+        models.Question.is_deleted == False
+    ).order_by(models.Question.order).all()
+    
     # Agregar allowed_mechanics
     permissions = db.query(models.ChecklistPermission.mechanic_id).filter(
         models.ChecklistPermission.checklist_id == checklist.id
@@ -1050,6 +1054,21 @@ def delete_question(
     if not db_question:
         raise HTTPException(status_code=404, detail="Pregunta no encontrada")
     
+    if db_question.is_deleted:
+        raise HTTPException(status_code=400, detail="La pregunta ya está eliminada")
+    
+    # Verificar si tiene subpreguntas activas
+    active_subquestions = db.query(models.Question).filter(
+        models.Question.parent_question_id == question_id,
+        models.Question.is_deleted == False
+    ).count()
+    
+    if active_subquestions > 0:
+        raise HTTPException(
+            status_code=400,
+            detail=f"No se puede eliminar la pregunta porque tiene {active_subquestions} subpregunta(s) activa(s). Elimina primero las subpreguntas."
+        )
+    
     # Registrar auditoría antes de eliminar
     audit_log = models.QuestionAuditLog(
         question_id=question_id,
@@ -1061,9 +1080,16 @@ def delete_question(
     )
     db.add(audit_log)
     
-    db.delete(db_question)
+    # SOFT DELETE: marcar como eliminada en lugar de borrar físicamente
+    db_question.is_deleted = True
+    db_question.updated_at = datetime.utcnow()
+    
     db.commit()
-    return {"message": "Pregunta eliminada"}
+    
+    return {
+        "message": "Pregunta eliminada exitosamente",
+        "note": "Las respuestas históricas se mantienen intactas. La pregunta no aparecerá en nuevas inspecciones."
+    }
 
 
 @app.get("/api/questions/{question_id}/audit", response_model=List[schemas.QuestionAuditLog])

backend/app/models.py

@@ -83,7 +83,11 @@ class Question(Base):
     # AI Analysis
     ai_prompt = Column(Text, nullable=True)  # Prompt personalizado para análisis de IA de esta pregunta
     
+    # Soft Delete
+    is_deleted = Column(Boolean, default=False)  # Soft delete: mantiene integridad de respuestas históricas
+    
     created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
     
     # Relationships
     checklist = relationship("Checklist", back_populates="questions")

backend/app/schemas.py

@@ -126,6 +126,7 @@ class QuestionBase(BaseModel):
     parent_question_id: Optional[int] = None
     show_if_answer: Optional[str] = None
     ai_prompt: Optional[str] = None
+    is_deleted: bool = False
 
 class QuestionCreate(QuestionBase):
     checklist_id: int
@@ -137,6 +138,7 @@ class Question(QuestionBase):
     id: int
     checklist_id: int
     created_at: datetime
+    updated_at: Optional[datetime] = None
     
     class Config:
         from_attributes = True