Method AddRelation

pkg/knowledge/manager.go:556–600

AddRelation 添加知识关系

(ctx context.Context, fromID, toID string, relationType RelationType, weight float64, label string)

// AddRelation 添加知识关系
func (m *manager) AddRelation(ctx context.Context, fromID, toID string, relationType RelationType, weight float64, label string) error {
	m.mu.Lock()
	defer m.mu.Unlock()

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

	// 验证目标项目存在
	_, err = m.getItemFromMemory(ctx, toID)
	if err != nil {
		return fmt.Errorf("knowledge: to item not found: %w", err)
	}

	// 添加关系
	relation := KnowledgeRelation{
		Type:     relationType,
		TargetID: toID,
		Weight:   weight,
		Label:    label,
	}

	// 检查关系是否已存在
	for _, existing := range fromItem.Relations {
		if existing.Type == relationType && existing.TargetID == toID {
			return errors.New("knowledge: relation already exists")
		}
	}

	fromItem.Relations = append(fromItem.Relations, relation)

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

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

	return nil
}

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