backend y front trabajar por version de historial de cambios

backend/app/models.py

@@ -201,3 +201,25 @@ class ChecklistPermission(Base):
     # Relationships
     checklist = relationship("Checklist", back_populates="permissions")
     mechanic = relationship("User")
+
+
+class InspectionAuditLog(Base):
+    """Registro de auditoría para cambios en inspecciones y respuestas"""
+    __tablename__ = "inspection_audit_log"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    inspection_id = Column(Integer, ForeignKey("inspections.id", ondelete="CASCADE"), nullable=False)
+    answer_id = Column(Integer, ForeignKey("answers.id", ondelete="CASCADE"), nullable=True)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    action = Column(String(50), nullable=False)  # created, updated, deleted, status_changed
+    entity_type = Column(String(50), nullable=False)  # inspection, answer
+    field_name = Column(String(100), nullable=True)  # Campo modificado
+    old_value = Column(Text, nullable=True)  # Valor anterior
+    new_value = Column(Text, nullable=True)  # Valor nuevo
+    comment = Column(Text, nullable=True)  # Comentario del cambio
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    
+    # Relationships
+    inspection = relationship("Inspection")
+    answer = relationship("Answer")
+    user = relationship("User")