Method RemoveRelation

pkg/knowledge/manager.go:603–641

RemoveRelation 移除知识关系

(ctx context.Context, fromID, toID string, relationType RelationType)

// RemoveRelation 移除知识关系
func (m *manager) RemoveRelation(ctx context.Context, fromID, toID string, relationType RelationType) error {
	m.mu.Lock()
	defer m.mu.Unlock()

	// 获取知识项
	item, err := m.getItemFromMemory(ctx, fromID)
	if err != nil {
		return fmt.Errorf("knowledge: item not found: %w", err)
	}

	// 移除关系
	relations := make([]KnowledgeRelation, 0, len(item.Relations))
	removed := false
	for _, existing := range item.Relations {
		if existing.Type == relationType && existing.TargetID == toID {
			removed = true
		} else {
			relations = append(relations, existing)
		}
	}

	if !removed {
		return errors.New("knowledge: relation not found")
	}

	item.Relations = relations

	// 保存更新
	if err := m.saveItemToMemory(ctx, item); err != nil {
		return fmt.Errorf("knowledge: failed to save updated relations: %w", err)
	}

	// 记录审计
	if m.config.EnableAudit {
		m.audit("remove_relation", "", fromID, fmt.Sprintf("Removed relation to %s: %s", toID, relationType))
	}

	return nil
}

// GetRelated 获取相关知识
func (m *manager) GetRelated(ctx context.Context, id string, relationTypes []RelationType, maxDepth int) ([]*KnowledgeItem, error) {